Ni-HWAK/WP V2/V2+

 CHILLERS AND INVERTER AIR/WATER HEAT PUMPS WITH AXIAL FANS User’s and Installer’s Manual Models N‐i‐HWAK/WP V2/V2+ 06 N‐i‐HWAK/WP V2/V2+ 09 N‐i‐HWAK/WP V2/V2+ 12 N‐i‐HWAK/WP V2/V2+ 15 This manual has been created for informative purpose. The company declines any responsibility for the results of any projecting or any installation based on the explanations and/or on the technical specifications provided in this manual. It is besides forbidden the reproduction under any form of the texts and of the figures contained in this manual. N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 04 12‐2013 A.M. G.M. 03 09‐2013 A.M. G.M. 02 07‐2013 D.P. G.M. 01 05‐2013 D.P. G.M. 00 05‐2013 D.P. G.M. Rev Date Author Supervisor Catalogo / Catalogue / Katalog / Catalogue MUI14124D5820‐04 Serie / Series / Serie / Serie / Série USER’S AND INSTALLER’S MANUAL FOR CHILLERS AND INVERTER AIR/WATER HEAT PUMPS WITH AXIAL FANS Possible wasted electrical or electronic devices/products should not be located together with normal domestic waste, but disposed according to the current WEEE law in compliance with the European Directive 2002/96/EC and following modifications 2003/108/EC. Please inform yourself at your local Administration or at your reseller in case the product will be replaced with a similar one. 1
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans INDEX 1 AIM AND CONTENTS OF THIS MANUAL .............................................................................................................................. 5 1.1 1.2 HOW TO KEEP THIS MANUAL ................................................................................................................................................. 5 GRAPHIC SYMBOLS................................................................................................................................................................. 5 2 SAFETY LAWS ..................................................................................................................................................................... 5 3 PERMITTED USES................................................................................................................................................................ 5 4 GENERAL SAFETY GUIDELINES ............................................................................................................................................ 6 4.1 4.2 4.3 4.4 5 TECHNICAL CHARACTERISTICS ............................................................................................................................................ 8 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 6 FRAME.................................................................................................................................................................................... 8 REFRIGERANT CIRCUIT ........................................................................................................................................................... 8 COMPRESSORS ....................................................................................................................................................................... 8 AIR SIDE EXCHANGERS............................................................................................................................................................ 8 FANS ....................................................................................................................................................................................... 8 USER SIDE HEAT EXCHANGERS ............................................................................................................................................... 8 ELECTRIC BOX ......................................................................................................................................................................... 8 CONTROL SYSTEM .................................................................................................................................................................. 8 MONITORING AND PROTECTION DEVICES ............................................................................................................................. 9 HYDRAULIC CIRCUIT ............................................................................................................................................................... 9 FAN SPEED CONTROL ............................................................................................................................................................. 9 AVAILABLE VERSIONS......................................................................................................................................................... 9 6.1 7 WORKERS’ HEALTH AND SAFETY ............................................................................................................................................ 6 PERSONAL SAFETY EQUIPMENTS ........................................................................................................................................... 6 SAFETY SYMBOLS.................................................................................................................................................................... 6 REFRIGERANT SAFETY DATA SHEET ........................................................................................................................................ 7 OPTIONAL ACCESSORIES ........................................................................................................................................................ 9 INSTALLATION.................................................................................................................................................................... 9 7.1 GENERALITY............................................................................................................................................................................ 9 7.2 LIFTING AND HANDLING....................................................................................................................................................... 10 7.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES .......................................................................................................... 10 7.4 HYDRAULIC CONNECTIONS .................................................................................................................................................. 10 7.4.1 Drainage connection .................................................................................................................................................... 10 7.4.2 Service valve ................................................................................................................................................................. 11 7.4.3 Plant drainage system.................................................................................................................................................. 11 7.4.4 Hydraulic circuit............................................................................................................................................................ 11 7.5 REFRIGERANT DIAGRAM OF 06‐09 KW ......................................................................................................................................... 12 7.6 REFRIGERANT DIAGRAM OF 12‐15 KW ......................................................................................................................................... 12 7.7 ELECTRICAL CONNECTIONS .................................................................................................................................................. 12 7.7.1 WIRING TERMINAL BLOCK............................................................................................................................................ 13 8 START UP ..........................................................................................................................................................................15 9 USER ‐ CONTROLLER INTERFACE ........................................................................................................................................16 9.1 MENU STRUCTURE DIAGRAM .............................................................................................................................................. 16 9.1.1 ANALOG INPUT MENU ................................................................................................................................................. 16 9.2 PARAMETERS CATEGORIES .................................................................................................................................................. 17 9.3 SETPOINT ADJUSTABLE BY THE USER ................................................................................................................................... 17 9.4 DISPLAY ................................................................................................................................................................................ 17 9.5 LED ....................................................................................................................................................................................... 17 9.6 DYNAMIC SET‐POINT ADJUSTMENT ..................................................................................................................................... 17 9.7 0‐10V ANALOG INPUT FOR SET‐POINT REGULATION ........................................................................................................... 18 9.8 HYDRAULIC PUMP OPERATION ............................................................................................................................................ 19 9.8.1 OPERATION BY THERMOREGULATOR (Default) ........................................................................................................... 19 9.8.2 OPERATION BY THERMOREGULATOR WITH PERIODIC ACTIVATION............................................................................ 20 9.8.3 CONTINUOUS OPERATION ........................................................................................................................................... 20 9.8.4 PROPORTIONAL ADJUSTMENT OF THE PUMP ............................................................................................................. 21 9.9 ANTIFREEZE PROTECTION ELECTRIC HEATERS (IF THE KA ACCESSORY IS PRESENT) ............................................................. 21 2
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9.10 ON/OFF REMOTE CONTROL AND SUMMER/WINTER MODES.............................................................................................. 21 9.11 REMOTABLE WATER TEMPERATURE SENSOR ...................................................................................................................... 21 9.12 ACTIVATION OF SANITARY HOT WATER PRODUCTION......................................................................................................... 21 9.12.1 SENSOR IN HEATING MODE MEMORY ......................................................................................................................... 22 9.12.2 CALL OF SANITARY HOT WATER PRODUCTION FROM DIGITAL INPUT........................................................................ 22 9.13 HEATING MODE ON SANITARY ACCUMULATION ................................................................................................................. 24 9.14 AUXILIARY ELECTRIC HEATER OF THE PLANT ........................................................................................................................ 24 9.14.1 AUXILIARY ELECTRIC HEATER OF THE PLANT IN DEFROST CYCLE................................................................................. 24 9.15 ELECTRIC HEATER OF SANITARY WATER PRODUCTION ........................................................................................................ 24 9.16 SELECTION MODE OF AUXILIRY ELECTRIC HEATERS ............................................................................................................. 24 9.17 ACTIVATION OF AUXILIARY ELECTRIC HEATER AND BOILER DURING THE JOINT/IN SUBSTITUTION OPERATION TO THE COMPRESSOR....................................................................................................................................................................... 24 9.18 INDICATION ON SUMMER/WINTER OPERATION.................................................................................................................. 30 9.19 HEAT DISSIPATION FAN MOTOR CONTROL .......................................................................................................................... 30 9.19.1 FAN SPEED CONTROL IN COOLING MODE.................................................................................................................... 30 9.19.2 FAN SPEED CONTROL IN HEATING MODE .................................................................................................................... 30 9.20 DEFROSTING CYCLE .............................................................................................................................................................. 31 9.21 COMPRESSOR CRANCKASE HEATER ..................................................................................................................................... 31 9.22 WATER SIDE DIVERTING VALVE (PRESENT ONLY ON V2+ SERIES)......................................................................................... 31 9.23 AVAILABLE FUNCTIONS WITH HI‐T ACCESSORY.................................................................................................................... 31 9.23.1 SCREED COAT FUNCTION.............................................................................................................................................. 31 9.23.2 DISINFECTION FUNCTION(ANTI‐LEGIONELLA).............................................................................................................. 31 9.24 HANDBOOK FOR CONFIGURATIONS OF INSTALLATION ....................................................................................................... 31 9.25 TABLES OF CONFIGURATIONS ALLOWED TO USER AND INSTALLER ..................................................................................... 32 9.25.1 Table of configurations of V2/V2 with KA series .......................................................................................................... 32 9.25.2 Table of configuration of the series V2+/V2+ with KA accessory ................................................................................. 35 9.26 ALARMS................................................................................................................................................................................ 37 9.26.1 Water flow switch E06.................................................................................................................................................. 37 9.26.2 High temperature E18 .................................................................................................................................................. 38 9.26.3 Anti‐freezing E05 .......................................................................................................................................................... 38 9.26.4 Sensors alarm ............................................................................................................................................................... 38 9.26.5 Timeout inverter E80 .................................................................................................................................................... 38 9.26.6 ON/OFF remote E00 ..................................................................................................................................................... 38 9.26.7 High pressure E01......................................................................................................................................................... 38 9.26.8 High pressure flow switch (in series with the compressor outlet probe) E64 ............................................................... 38 9.26.9 Low pressure E02.......................................................................................................................................................... 38 9.27 POWER FAILURE ................................................................................................................................................................... 38 9.28 USER BLOCK ALLARMS TABLE ............................................................................................................................................... 38 10 SHUTDOWNS FOR LONG PERIODS .................................................................................................................................39 11 MAINTENANCE AND PERIODICAL CONTROLS .................................................................................................................39 11.1 ENVIRONMENTAL PROTECTION ........................................................................................................................................... 39 12 WHEN THE UNIT GOES OUT OF SERVICE.........................................................................................................................39 13 TECHNICAL DATA...........................................................................................................................................................40 14 ELECTRIC DATA OF THE UNIT AND AUXILIARIES..............................................................................................................41 15 HEAT PUMPS AVAILABLE HEAD PRESSURE .....................................................................................................................41 15.1 15.2 15.3 15.4 16 WATER PUMP CURVES ..................................................................................................................................................42 16.1 16.2 16.3 16.4 17 MODELS N‐I‐HWAK/WP V2/V2+ 06...................................................................................................................................... 41 MODELS N‐I‐HWAK/WP V2/V2+ 09...................................................................................................................................... 41 MODELS N‐I‐HWAK/WP V2/V2+ 12...................................................................................................................................... 42 MODELS N‐I‐HWAK/WP V2/V2+ 15...................................................................................................................................... 42 MODELS N‐I‐HWAK/WP V2 06‐09 ........................................................................................................................................ 42 MODELS N‐I‐HWAK/WP V2+ 06‐09 ...................................................................................................................................... 43 MODELS N‐I‐HWAK/WP V2 12‐15 ........................................................................................................................................ 43 MODELS N‐I‐HWAK/WP V2+ 12‐15 ...................................................................................................................................... 43 OPERATING LIMITS........................................................................................................................................................44 17.1 EVAPORATOR WATER FLOW RATE ....................................................................................................................................... 44 3
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 17.2 COLD WATER TEMPERATURE (SUMMER OPERATION)......................................................................................................... 44 17.3 HOT WATER TEMPERATURE (WINTER OPERATION)............................................................................................................. 44 17.4 AMBIENT AIR TEMPERATURE ............................................................................................................................................... 44 18 CORRECTION FACTORS FOR USE OF GLYCOL ..................................................................................................................45 19 DIMENSIONS .................................................................................................................................................................45 19.1 MODELS N‐I‐HWAK/WP V2/V2+ 06...................................................................................................................................... 45 19.2 MODELS N‐I‐HWAK/WP V2/V2+ 09...................................................................................................................................... 46 19.3 MODELS N‐I‐HWAK/WP V2/V2+ 12‐15................................................................................................................................. 46 20 WIRING DIAGRAMS .......................................................................................................................................................47 20.1 20.2 20.3 20.4 20.5 20.6 21 MODELS N‐I‐HWAK/WP V2 06 ‐09........................................................................................................................................ 47 MODELS N‐I‐HWAK/WP V2 12.............................................................................................................................................. 48 MODEL N‐I‐HWAK/WP V2 15................................................................................................................................................ 49 MODELS N‐I‐HWAK/WP V2+ 06‐09 ...................................................................................................................................... 50 MODEL N‐I‐HWAK/WP V2+ 12.............................................................................................................................................. 51 MODEL N‐I‐HWAK/WP V2+ 15.............................................................................................................................................. 52 CR REMOTE KEYBOARD (OPTIONAL ACCESSORY) ...........................................................................................................53 21.1 CONNECTION OF THE CRH KEYBOARD TO THE MINICHILLER ............................................................................................... 53 22 DUAL SET‐POINT KIT (OPTIONAL ACCESSORY) ................................................................................................................53 22.1 PURPOSE AND SCOPE ........................................................................................................................................................... 53 22.2 PARTS AND TECHNICAL CHARACTERISTICS OF THE KIT......................................................................................................... 53 22.3 FUNCTIONS OF HUMIDISTAT................................................................................................................................................ 54 22.4 SETTING OF MINICHILLER ..................................................................................................................................................... 54 22.5 NOTES FOR INSTALLATION ................................................................................................................................................... 54 22.6 ADJUASTABLE SET‐POINT ..................................................................................................................................................... 55 22.7 COMMUTATION ................................................................................................................................................................... 55 22.8 WIRING DIAGRAMS .............................................................................................................................................................. 56 22.8.1 Wiring diagram of V2 models, without external relay connection............................................................................... 56 22.8.2 Wiring diagram of V2 models, with external relay connection .................................................................................... 56 22.8.3 Wiring diagram of V2+ models, with external relay connection .................................................................................. 57 22.9 HUMIDISTAT CONNECTION.................................................................................................................................................. 57 22.10 HYDRAULIC DIAGRAM TYPE ................................................................................................................................................. 58 4
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans The N‐i‐HWAK/WP V2/V2+ manual contains all the necessary information for the better use of the equipment under safety conditions for the operator thus meeting the requirements listed in the 2006/42/CE Equipment Directive and following amendments. 1 AIM AND CONTENTS OF THIS MANUAL This manual provides basic information as for the installation, the operation and the maintenance of the N‐i‐HWAK/WP V2/V2+ units. It is addressed to machine operators and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge of it. This manual describes the characteristics of the equipment at the time it is being put on the market; therefore, it may not capture later technological improvements introduced by ADVANTIX SPA as part of its constant endeavour to enhance the performance, ergonomics, safety and functionality of its products. ADVANTIX, therefore, is not constrained to update the manuals for previous versions of machines. It’s recommended that, the user must follow the instructions contained in this booklet, especially those concerning the safety and routine maintenance. 1.1 HOW TO KEEP THIS MANUAL The manual has to be always kept with the unit it refers to. It has to be stored in a safe place, away from the dust and moisture. It has to be accessible to all users who shall consult it any time they are in doubt on how to operate the equipment. ADVANTIX SPA reserves the right to modify its products and related manuals without necessarily updating previous versions of the reference material. It declines also any responsibility for possible inaccuracies in the manual if due to printing or transcription errors.
The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this manual. ADVANTIX SPA is available to give any detailed information about this manual and to give information regarding the use and the maintenance of its own units. 1.2 GRAPHIC SYMBOLS Indicates operations that can be dangerous for people and/or disrupts the correct operation of the equipment. Indicates prohibited operations. Indicates important information that the operator has to follow in order to guarantee the correct operation of the equipment in complete safety. 2 SAFETY LAWS ADVANTIX SPA’s equipments and their component parts have been designed in compliance with the harmonised EC norms in force and with other European and national norms as required by the Council Directive (2006/42/CE and later amendments). The equipments meet also the following requirements: • UNI EN ISO 121100 • UNI EN ISO 13857 • UNI EN 378‐1, 378‐2, 378‐3 and 378‐4 Rules • UNI EN 12735‐1 Rule • CEI EN 60204‐1 Rule • EN 55014‐1, EN 55014‐2, EN 61000‐3‐2, EN 61000‐3‐3, EN 62233 Rules • 97/23/CE, 2006/95/CE, 2006/95/CE, 2006/95/CE, 2006/96/CE Community Directives 3 PERMITTED USES •
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The company excludes any contractual and extracontractual liabilities for damages caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual. These units have been designed only for heating and/or cooling water. Any other use not expressly authorized by the manufacturer is considered improper and therefore not allowed. The location of the plant, the hydraulic and electrical circuits must be established by the planting designer and must take into account both technical requirements as well as any applicable local laws and authorized specifications. The execution of all works must be performed by skilled and qualified personnel, competent in the existing rules in different countries. N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 4 GENERAL SAFETY GUIDELINES Before beginning to operate on N‐i‐HWAK/WP V2/V2+ units every user has to be perfectly knowledgeable about the functions of the equipment and its controls and has to have read and understood the information listed in this manual. It’s strictly forbidden to remove and/or tamper with any safety device. Children or unassisted disabled persons are not allowed to use the appliance. Do not touch the appliance when barefoot or parts of the body are wet or damp. Do not pull, remove or twist the electrical cables coming out from the unit, even if it is disconnected from the main power supply. Do not step with your feet on the appliance, sit down and/or place any type of object. Do not spray or pour water directly on the unit. Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags, etc) as they may represent a hazard. Any routine or not‐routine maintenance operation shall be carried out when the equipment has been shut down, disconnected from electric power sources. Do not put neither your hands nor insert screwdrivers, spanners or other tools into moving parts of the equipment. The equipment supervisor and the maintenance man has to receive suitable training for the performance of their tasks in safety. Operators have to know how to use personal protective devices and have to know the accident‐prevention guidelines contained in national and international laws and norms. 4.1 WORKERS’ HEALTH AND SAFETY The European Community has adopted a number of directives on workplace’s health and safety, which include 89/391/CEE, 89/686/CEE, 89/655/CEE, 86/188/CEE and 77/576/CEE directives. Every employer shall implement such provisions and ensure that workers respect them: Do not tamper with or replace parts of the equipment without the specific consent of the manufacturer. The manufacturer shall have no responsibility whatsoever in case of unauthorised operations. Using components, expendable materials or spare parts that do not correspond to those recommended by the manufacturer and/or listed in this manual may be dangerous for the operators and/or damage the equipment The operator’s workplace has to be kept clean, tidy and free from objects that may prevent free movements. Appropriate lighting of the work place shall be provided so as to allow the operator to carry out the required operations safely. Poor or too strong lighting can cause risks. Ensure that work places are always adequately ventilated and that aspirators are working, in good condition and in compliance with the requirements of the laws in force. 4.2 PERSONAL SAFETY EQUIPMENTS When operating and maintaining the N‐i‐HWAK/WP V2/V2+ units, use the following personal protective equipments. Protective clothing: Maintenance men and operators has to wear protective clothing that complies with the basic safety requirements currently in force. In case of slippery floors, users have to wear safety shoes with non‐slip soles. Gloves: During maintenance or cleaning operation protection gloves have to be used Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during cleaning and maintenance operations. 4.3 SAFETY SYMBOLS The unit features the following safety signs, which has to be complied with: General hazards Electric shock hazard Presence of moving organs Presence of surfaces that may cause injures 6
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 4.4 REFRIGERANT SAFETY DATA SHEET Name: Major risks: Specific risks: General informations: Inhalation: Eyes contact: Contact with skin: Extinguishing Media: Specific risks: Specific methods: Personal precautions: Environmental precautions: Cleaning method: Manipulation Action/technical precautions: Recommendations for safe use: Storage: Control parameters: Respiratory protection: Eyes protection: Protection of hands: Hygiene measures: Colour: Odor: Boiling point: Lighting point: Density: Solubility in water: Stability: Materials to avoid: Decomposition products Risks: Acute toxicity: Local effects: Long term toxicity: ECOLOGICAL INFORMATION Global warming potential GWP (R11=1): Potential depletion Ozone ODP (R11=1): Disposal considerations: 7
R410A (50% Difluoromethane (R32); 50% Pentafluoroethane (R125). RISKS INDICATIONS Asphyxia The rapid evaporation may cause freezing. FIRST AID Never give anything by mouth to an unconscious person. Move to fresh air. Oxygen or artificial respiration if necessary. Do not administer adrenaline or similar drugs. Rinse carefully with water for at least 15 minutes and consult a doctor. Wash immediately with plenty of water. Take off immediately the contaminated clothing. FIRE PREVENTION Whatever. Increase in pressure. Use water spray to cool containers ACCIDENTAL RELEASE ACTIONS Evacuate personnel to safe areas. Provide adequate ventilation. Use personal protective equipment. Evaporate. Evaporate. HANDLING AND STORAGE Provide sufficient air exchange and/or suction in work places. Do not breathe vapors or aerosol. Close tightly and store in a cool, dry and well ventilated place. Store in original container. Incompatible products: explosive, flammable materials, Organic peroxide EXPOSURE CONTROL / PERSONAL PROTECTION AEL (8‐h e 12‐h TWA) = 1000 ml/m³ for each of the two components. For rescue and maintenance operation in storage tanks use self‐contained respirator apparatus. The vapors are heavier than air and can cause suffocation by reducing oxygen available for breathing. Safety glasses. Rubber gloves. Do not smoke. PHYSICAL AND CHEMICAL PROPERTIES Colourless. Light. ‐52.8°C at atmospheric pressure. It does not ignite. 1.08 kg/l at 25°C. Negligible. STABILITY AND REACTIVITY No reactivity when used with the appropriate instructions. Highly oxidizing materials. Incompatible with magnesium, zinc, sodium, potassium and aluminum. The incompatibility is more serious if the metal is present in powdered form or if the surfaces were, recently, unprotected. These products are halogenated compounds, hydrogen fluoride, carbon oxides (CO, CO2), carbonyl halides. TOXICOLOGICAL INFORMATION (R32) LC50/ inhalation /4 hours/on rat >760 ml/l (R125) LC50/ inhalation /4 hours/on rat >3480 mg/l Concentrations substantially above the TLV may cause narcotic effects. Inhalation of decomposed products of high concentrations may cause respiratory failure (pulmonary edema). Did not show carcinogenic, teratogenic or mutagenic effects in animal experiments. 1730 0 usable with reconditioning. N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 5 TECHNICAL CHARACTERISTICS The N‐i‐HWAK/WP V2/V2+ water chillers and heat pumps series are designed for applications in residential and commercial areas, These units are extremely versatile and can operate in heat pump mode with the ability of producing hot water at a temperature of 55°C for environmental heating and sanitary applications. The INVERTER compressor with brushless DC motor technology, matched with electronic expansion valve, pump and variable speed blower are generally used for optimizing the power consumption and efficient operation of the refrigerating components. 5.1 FRAME All N‐i‐HWAK/WP V2/V2+ units are made up of hot‐galvanised thick sheet metal, painted with polyurethane powder enamels at 180°C to ensure the best resistance against atmospheric agents. The frame is self‐supporting with removable panels. All screws and rivets for outdoor installations are in galvanized steel. 5.2 REFRIGERANT CIRCUIT The refrigerant gas used in these units is R410A. The refrigerant circuit has been manufactured by means of international primary brands components and according to the UNI EN 13134 Rule concerning welding procedures. The refrigerant circuit includes: 4 way reverse cycle valve, electronic expansion valve, liquid separator (models 09, 12 and 15), liquid receiver, valves for maintenance and control, pressure safety device according to PED regulation, pressure transducers to accurately adjust the evaporating and condensing pressures, filters for throttling valve to avoid its clogging. 5.3 COMPRESSORS The used DC inverter compressors are a rotary hermetic type (for 06 and 09 models) and twin rotary (for the 12 model), scroll (for the 15 model) designed to be used with R410 refrigerant. The compressors are all supplied with crankcase heater and thermal overload protection. They are mounted on a rubber material acting as a shock absorbers. The compressors are mounted in a separate chamber in order to be separated from the air stream to reduce the noise. The crankcase heater operates when the compressor remains off for at least 30 minutes and if the discharge temperature is below 20°C (with hysteresis of 2.0°C). When the compressor restarts, the crankcase heater will stop operation. We recommend to turn on the unit and to put it in standby mode at least 6 hours before the first startup. The checking of the compressors is possible through the frontal panel of the unit that allow the maintenance of the compressors even if the unit is working. 5.4 AIR SIDE EXCHANGERS The air side exchangers are made up of copper pipes and aluminium fins. The diameter of the copper pipes is 7mm for the model 09 and 5/16” for the other models 12 and 15, the thickness of the aluminium fins is 0,1mm. The tubes are mechanically expanded into the aluminium fins to improve the heat exchange factor. The geometry of these condensers guarantee a low air side pressure drop and, then, the use of low rotation (and low noise emission) fans. 5.5 FANS The fans are axial type with aluminium aerofoil blades. They are statically and dynamically balanced and supplied complete of the safety fan guard according to the EN 60335 Rule (safety for electrical apparatus of domestic and similar use). They are mounted on the unit frame by interposition of rubber vibration dampers. The electric motors are all brushless DC type with 8 poles (about 200/1000 rpm). The motors are directly driven with an integrated thermal overload protection. The protection class of the motors is IP X4. 5.6 USER SIDE HEAT EXCHANGERS The user side heat exchangers are made up of AISI 316 stainless steel braze‐welded plates type. The user heat exchangers are factory insulated with flexible close cell material and can be equipped with antifreeze heater (KA optional). Each heat exchanger is provided with a temperature sensor working as antifreeze protection that activates the circulator, even in the case when the unit is turned off when the conditions set in the controller have been occurred. 5.7 ELECTRIC BOX The electric box is manufactured according to according current European Union laws. The accessibility to the board is possible after removing the front, side and top panels of the unit. The protection degree is IP24. The terminal board is supplied with voltage free contacts for remote ON‐OFF, winter/summer change over, auxiliary heater, sanitary water temperature sensor control of external 3‐way valve and free contacts for remote control panel and for the management of the dual setpoint of operation. 5.8 CONTROL SYSTEM All N‐i‐HWAK/WP V2/V2+ units are standard supplied with a microprocessor adopting an overheating control logic program through the electronic expansion valve which is driven by the pressure transducers signals. The microprocessor is also capable of controlling the following functions: water temperature regulation, antifreeze protection, compressors’ time setting, compressor automatic starting sequence, alarm reset, alarm management and operating LED. Upon request, the microprocessor can be connected to a BMS remote control system and to the simpler HNS system with our terminal units. The control system together with the INVERTER technology and the on board sensors continuously monitor and adapt the performance of the inverter 8
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans compressor, of the pump and of the fan (2 fans as for the N‐i‐HWAK/WP V2/V2+ 12 and 15 models) according to the value of cooling power at any working conditions requested by the user. The INVERTER system allow to reduce the plant’s water content to the minimum, that is from the usual value 12‐15 l/kW to 18 liters for the 06 model or to 25 liters (for the 09 model) or to 35 liters for the 12 model and to 45 liters for the model 15, in ABSOLUTE, of the N‐i‐HWAK/WP V2/V2+ units. Because of the reduced water content, the N‐i‐HWAK/WP V2/V2+ units can be installed in plants without water tank with advantages in terms of the appliance’s reduced size, the installation space, heat loss and installation and maintenance costs. 5.9 MONITORING AND PROTECTION DEVICES All units are standard supplied with the following monitoring and protection devices: return water temperature sensor installed at the return water pipe line from the plant, operating and antifreeze sensor installed at the outlet pipe of the water to the plant, high pressure transducer, low pressure transducer, compressor’s inlet and outlet temperature sensors, compressors thermal protection device, fans thermal protection device, water side installed water flow switch to protect the evaporator, high pressure HP flow switch. CAUTION: The INVERTER control system is able to manage in the plant the minimum water contents up to a value of 18 liters for the 06 model, of 25 liters for the 09 model, of 35 liters for the 12 model, and of 45 liters for the 15 model. This value makes reference to the liters absolute value and not to any kW of installed power. 5.10 HYDRAULIC CIRCUIT The N‐i‐HWAK/WP V2/V2+ chillers units are supplied with an integrated hydraulic circuit including the circulating pump, suitable for chilled water utilization and directly run by a controller on board. The circulator is always modulating type, it adopts asynchronous motor for V2 models and DC brushless V2+ models. The hydraulic circuit also includes: expansion vessel, safety valve (6 bar) and the automatic air release valve. In the case of V2+ series, there is also a 4‐way valve for reversing the flow of the the heat exchanger, allowing the optimization of the yield even in evaporation. 5.11 FAN SPEED CONTROL This type of control is managed by the microprocessor and is necessary for optimizing the pressure of evaporation/condensation
during summer/winter operation in order to allow proper running of the unit. 6 AVAILABLE VERSIONS N‐i‐HWAK/WP V2/V2+ reversible heat pump with integrated hydronic system (expansion vessel, safety valve, pressure gauge, modulating pump, flow switch, automatic air release valve load/unload valve). Available versions: 06, 09, 12 e 15. 6.1 OPTIONAL ACCESSORIES Hi‐T ‐ Multifunction touch screen remote control with centralized management of minichillers and HNS system, USB port, temperature and humidity sensors. It has also an extremely intuitive interface simplifying the use of the controller. CRH ‐ Remote control panel to be installed in the room for the unit remote controlling, with additional functions in comparison to the one installed on board; it can also run our hydronic terminal units. AG ‐ Anti‐vibration rubber pad to be installed in the chassis of the unit for possible shock absorption. KA ‐ antifreezing kit (this accessory have to be required when the order is placed and have to be factory installed). It is made up of an auto‐heating cable that wrapped around the base of the unit near the condensing coil and two PET heaters installed on the sides of the plate heat exchanger. KDS – Kit for dual set point (already included in Hi‐T) that allows the control of a second setpoint of operation for the plant side. 7 INSTALLATION WARNING: All the operation described in next chapters MUST BE DONE BY TRAINED PEOPLE ONLY. Before any operation on the unit, be sure that the electric supply is disconnected. 7.1 GENERALITY When installing or servicing the unit, it is necessary to strictly follow the rules listed in this manual, to conform to all the specifications of the labels on the unit, and to take any possible precautions. Not observing the rules reported on this manual can create dangerous situations. After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any eventual damage has to be questioned to the carrier and recorded on the Delivery Note before signing it. ADVANTIX SPA has to be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of any severe damage. 9
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 7.2 LIFTING AND HANDLING When unloading and installing the unit, it is highly recommended to avoid any sudden move in order to protect the inner components. Units can be lifted by means of a forklift or, in alternative, of belts, being sure not to damage the lateral panels and the cover. It is important to keep the unit horizontal during these operations. 7.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES The all N‐i‐HWAK/WP V2/V2+ units are designed for outdoor installation: any cover over the unit and location near trees (even if they partially cover the unit) has to be avoided in order to prevent air recirculation. It is advisable to create a proper basement, with a size similar to unit foot‐print. Unit vibration level is very low: it is advisable however, to fit a rigid rubber band between basement and unit base‐frame. It is also possible to install anti‐vibration supports (springs or rubbers) to keep vibrations at a very low level. Absolute care has to be taken to ensure adequate air volume to the condenser. Re‐circulation of discharge air has to be avoided; failure to observe this point will result in poor performance or activation of safety controls. For these reasons it is necessary to observe the following clearances: Models N‐i‐HWAK/WP V2/V2+ 06 N‐i‐HWAK/WP V2/V2+ 09 N‐i‐HWAK/WP V2/V2+ 12 N‐i‐HWAK/WP V2/V2+ 15 A 1500 1500 1500 1500 B* 500 500 500 500 C 400 400 400 400 D 400 400 400 400 E** 500 500 500 500 * The recommended minimum distance for installation and maintenance. ** The recommended minimum distance for assistance and maintenance 7.4 HYDRAULIC CONNECTIONS The hydraulic connections have to be installed in accordance with national and local regulations; pipes can be made up of steel, galvanized steel or PVC. Pipes have to be designed depending on the nominal water flow and on the hydraulic pressure drops of the system. All pipes have to be insulated with closed‐cell material of adequate thickness. Chillers have to be connected to piping by means of flexible joints. Piping should include: • Hole thermometers to monitor the system’s temperature. • Manual gate valves to separate the chiller from the hydraulic circuit. • Y‐shaped metallic filter (to be mounted on the inlet pipe) with a mesh not larger than 1mm. • Charging group and discharge valve, where necessary. WARNING: Make sure that, when designing the pipe length and diameter, do not exceed the maximum head loss
on the plant side, please see the technical data given in the table of Paragraph 12 (available pressure head). WARNING: Connect the pipes to the attacks by using always key against key system. WARNING: Unit water inlet pipe have to be in correspondence with the connection labelled: ”WATER INLET”, otherwise the evaporator may freeze. WARNING: It is compulsory to install on the WATER INLET connection a metallic filter with a mesh not larger than 1mm. Should the water flow switch be altered or should the filter not be installed, the warranty will no longer be valid. The filter have to be kept clean, so make sure it is clean after the unit has been installed, and then check it periodically. All units are standard supplied with the water flow switch (factory installed). Should the water flow switch be altered, removed, or should the water filter not be installed on the unit, the warranty will be invalidated. Please refer to the wiring diagram for the water flow switch electric connections. 7.4.1 Drainage connection All N‐i‐HWAK/WP V2/V2+ units have been designed to use their own base as a drain pan; a plastic pipe fitting is standard provided to be installed onto the lower part of the unit in the special housing enabling the connection of a drainage pipe. Drainage pipe fitting Drainage pipe fitting housing Drainage pipe fitting connected to the unit 10
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans Each unit is also provided, on the basement of the hydronic kit (accessible from the right sides panels), with a hole that can allow to drain any condensation that may escape from plumbing pipes. As well as the pipes are well‐insulated, the production of condensate is however very low and therefore the connection of a drainage pipe to that hole is not required. 7.4.2 Service valve You can use the service valve, when it is necessary to refill the plant or adapt the concentration of glycol. Unscrew the cap of the service valve and connect to the hose a pipe of 14 mm (inner diameter) connected to the water network, and then load the system by unscrewing the knurled nut. When the operation is concluded, retighten the knurled nut and screw on the cap. In any case, we recommend you to use for the water loading of the plant an external tap whose arrangement is by the installer. Knurled nut
Cap with gasket
7.4.3 Plant drainage system When it is necessary to drain the plant, close at first the inlet and outlet manual gate valves (not supplied) and then remove the pipes that are disposed externally on the water inlet and on the water outlet in order to spill away the liquid contained in the unit (for easier operation, it is recommended to install externally two draining valves, on the water inlet and on the water outlet, between the unit and the manual gate valves). In the case of V2+ series, you also need to connect a hose to the service valve and make sure to fully discharge the heat exchanger by the mean of the knurled nut as described in paragraph 7.4.2. 7.4.4 Hydraulic circuit Models: N‐i‐HWAK/WP V2 G
E
C
F
Models: N‐i‐HWAK/WP V2+ G
E
H
F
D
D
A
A
I
B
B
C
KEY A B C D E 11
H
Plate heat exchanger Water flow switch Service valve Pump Expansion vessel F G H I Air vent valve Safety valve Pressure gauge
Reverse‐flow 4‐way valve N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 7.5 Refrigerant diagram of 06‐09 kW LP
HP
Pr
OS
C
ST
DT
CLS
LS
4WV
FL
IN
M
FL
EEV
OUT
SE
LR
P
C CLS OS ST DT HP Pr LP LS 4WV LR EEV FL M SE P IN OUT COMPRESSOR COMPRESSOR LIQUID SEPARATOR OIL SEPARATOR (only for the models 12 and 15) COMPRESSOR INLET TEMPERATURE COMPRESSOR OUTLET TEMPERATURE HIGH PRESSURE TRANSDUCER HIGH PRESSURE FLOW SWITCH LOW PRESSURE TRANSDUCER LIQUID SEPARATOR (only for models 09, 12, 15) VALVE FO INVERTING CYCLE LIQUID RECEIVER ELECTRONIC EXPANSION VALVE FILTER AXIAL FAN OUTDOOR AIR TEMPERATURE CIRCULATOR ON BOARD UNIT WATER INLET TEMPERATURE WATER OUTLET TEMPERATURE C CLS OS ST DT HP Pr LP LS 4WV LR EEV NRV FL M SE P IN OUT COMPRESSOR COMPRESSOR LIQUID SEPARATOR OIL SEPARATOR (only for the models 12 and 15) COMPRESSOR INLET TEMPERATURE COMPRESSOR OUTLET TEMPERATURE HIGH PRESSURE TRANSDUCER HIGH PRESSURE FLOW SWITCH LOW PRESSURE TRANSDUCER LIQUID SEPARATOR (only for models 09, 12 and 15) VALVE FO INVERTING CYCLE LIQUID RECEIVER ELECTRONIC EXPANSION VALVE NO RETURN VALVE (available only for some models) FILTER AXIAL FAN OUTDOOR AIR TEMPERATURE CIRCULATOR ON BOARD UNIT WATER INLET TEMPERATURE WATER OUTLET TEMPERATURE CP CAPILLARY 7.6 Refrigerant diagram of 12‐15 kW LP
HP
Pr
OS
C
ST
DT
C LS
LS
4W V
NRV
FL
IN
OUT
FL
CP
EEV
LR
P
M
SE
WARNING: The unit should be installed so that adequate clearance is available for maintenance and repairation. The warranty does not cover costs related to platforms or handling equipment necessary for any maintenance. All maintenance and testing operations should be carried out only by QUALIFIED PERSONNEL. Before any operation on the unit, make sure the power supply is disconnected. WARNING: Inside the unit, there are some moving parts. Be especially careful when working near them, even if the unit is off. The temperatures of heads and exhaust piping of the compressor are usually high. Therefore be careful when working near condensing coils. The aluminum fins are very sharp and can cause serious injuries. After the maintenance operations, close the panels tightly with the fastening screws. 7.7 ELECTRICAL CONNECTIONS Check out that the power supply meets the unit’s electric nominal data (tension, phases, frequency) reported on the label in the unit’s right‐side panel. Power connections have to be made in accordance to the wiring diagram enclosed with the unit and in conformity with the national and international norms in force (providing equipments as general magnetothermic circuit breaker, differential circuit breakers for each electric line, proper grounding for the plant, etc.). Power cables, electric protections and line fuses have to be sized according to the specifications listed in the wiring diagram enclosed with the unit and in the electrical data contained in the table of technical characteristics (see Paragraph 13). WARNING: The supply voltage’s fluctuations can not exceed ±10% of the nominal value. Should this tolerance not be respected, please contact our technical department. 12
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans WARNING: The power supply have to respect the listed limits: failing this, warranty will terminate immediately. Before any operation on the unit, be sure that the power supply is disconnected. WARNING: The water flow switch (B component in the previous hydraulic circuit and factory installed) have ALWAYS to be connected following the indications listed in the wiring diagram. Never bridge the water flow switch connections in the terminal board. Should the water flow switch connections altered or not properly made, the guarantee will be invalidated. WARNING: The remote control panel is connected to the water chiller by means of no.4 wires having a 1,5 mm2
section. The power supply cables have to be separated from the remote control wires. The maximum distance is 50m. WARNING: The remote control panel can not be installed in areas with strong vibrations, corrosive gases, and excess of dirtiness or high humidity levels. Leave free the area near the cooling openings. 7.7.1 WIRING TERMINAL BLOCK Electrical wiring have to be done only by qualified personnel. The electrical connections have to be realized by qualified personnel. The terminal block is located under the plastic cover on the side of the hydraulic connections (for the models 12 and 15, it is necessary to remove the protective carter). The wiring to the terminal block has to be realized in accordance to the below notes (the drawing is for illustration). The connections indicated below are standard. Other connections are shown in the table see paragraph 9.25. Terminal Type Connection GND Power supply 1‐Ph/N/PE 230V, 50Hz Connect the grounding wire (3‐Ph/N/PE 400 Vac, 50Hz for the model of 15kW) N1 Power supply 1‐Ph/N/PE 230V, 50Hz Connect the power supply neutral wire; (3‐Ph/N/PE 400 Vac, 50Hz for the model of 15kW) L1 Power supply 1‐Ph/N/PE Connect the power supply phase wire; (note that, in the three‐phases 230V, 50Hz versions there are two other terminals, L2 and L3) (3‐Ph/N/PE 400 Vac, 50Hz for the model of 15kW) Power supply NC terminal (230V AC) for 3‐way valve for sanitary hot Digital output water boiler (used only for 3‐way valve with 3 contacts for power supply NC1 230 Vac with changeover contact
connection to switching‐over to the plant side) (for further configuration settings, please check the Paragraph 9.25) Power supply neutral terminal (230V AC) for 3‐way valve for sanitary hot Digital output water boiler (for further configuration settings, please refer to Paragraph N 230 Vac with changeover contact
9.25) Power supply NO terminal (230V AC) for 3‐way valve for sanitary hot Digital output water boiler (to switch‐over the valve to the boiller side) (for further NO1 230 Vac with changeover contact
configuration settings, please refer to Paragraph 9.25) Power supply NC terminal (230V, 50Hz, 5A resistive, 1 A inductive) for 3‐
Digital output way dual set point valve for radiant panels. (optional, to use only on V2 NC2 230 Vac with changeover contact
series, see paragraph 21) (for further configuration settings, please refer to Paragraph 9.25) 13
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans N2 Digital output 230 Vac with changeover contact
NO2 Digital output 230 Vac with changeover contact
R+ R‐ GNDR 12V+ 12V‐ Serial communication Serial communication Serial communication Power supply output 12Vac, 50Hz Power supply output 12Vac, 50Hz SE Analog (ST8)/digital (DI7) input SE Analog (ST8)/digital (DI7) input AEHN Digital output (DO3) 230 Vac AEH Digital output (DO3) 230 Vac SAN Analog (ST9)/digital (DI8) input SAN Analog (ST9)/digital (DI8) input DO5N Digital output (DO5) 230 Vac DO5 Digital output (DO5) 230 Vac DO4N Digital output (DO4) 230 Vac DO4 Digital output (DO4) 230 Vac SW Digital input SW Digital input onoff onoff 0‐10V+ 0‐10V‐ Digital input Digital input Analog input (ST10) Analog input (ST10) Power supply neutral terminal (230V AC) for 3‐way dual set point valve for radiant panels (optional, to use only on V2 series, see paragraph 21.) (for further configuration settings, please refer to Paragraph 9.25) Power supply NO terminal (230V, 50Hz, 5A resistives, 1 A inductives) 3‐
way valve dual set point for radiant panels (optional, to use only on V2 series, see paragraph 22.) (for further configuration settings, please refer to Paragraph 9.25) Modbus + signal connection to remote keyboard Modbus ‐ signal connection to remote keyboard connection to modbus ground for remote keyboard Power output for remote keyboard (12V, 50Hz, 500mA) Power output for remote keyboard (12V, 50Hz, 500mA) Humidistat terminal for the dual set‐point regulation (optional) (for further configuration settings, please refer to Paragraph 9.25) Humidistat terminal for the dual set‐point regulation (optional) (for further configuration settings, please refer to Paragraph 9.25) Neutral output of auxiliary electric heater for sanitary water (230V, 50Hz, 5A) (for further configuration settings, please refer to Paragraph 9.25) Phase output of auxiliary electric heater for sanitary water (230V, 50Hz, 5A) (for further configuration settings, please refer to Paragraph 9.25) Sanitary water boiler sensor terminal (for further configuration settings, please refer to Paragraph 9.25) Sanitary water boiler sensor terminal (for further configuration settings, please refer to Paragraph 9.25) Neutral output, on V2+ series for controlling the dual set point valve (230V, 50Hz, 5A resistive, 1A inductive) (optional to be used only if the unit has not included the antifreeze kit “KA”) (for other possible configurations of V2 and V2+ series see 9.25) Phase output, on V2+ series for controlling the dual set point valve (230V, 50Hz, 5A resistive, 1A inductive) (optional to be used only if the unit has not included the antifreeze kit “KA”) (for other possible configurations of V2 and V2+ series see 9.25) Neutral output (230V, 50Hz, 5A resistive, 1 A inductive) (optional to be used only if the unit has not included the antifreeze kit “KA”) (for other possible configurations of V2 and V2+ series see 9.25) Phase output (230V, 50Hz, 5A resistive, 1 A inductive) (optional to be used only if the unit has not included the antifreeze kit “KA”) (for other possible configurations of V2 and V2+ series see 9.25) Summer/winter switching mode terminal via remote control (closed = summer/open = winter); Summer/winter switching mode terminal via remote control (closed = summer/open = winter) Remote on‐off terminal (closed = unit ON/open = unit OFF) Remote on‐off terminal (closed = unit ON/open = unit OFF) Input signal 0‐10V (+) for set point adjustment Input signal 0‐10V (‐) for set point adjustment 14
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 8 START UP Before start‐up: • Check out the availability of the supplied wiring diagrams and manuals of installed apparatus. • Check out the availability of the electrical and hydraulic diagrams of the plant in which the unit is installed. • Check that the shut‐off valves of the hydraulic circuits are open. • Verify that the hydraulic circuit has been charged under pressure and air vented. • Check out that all water connections are properly installed and all indications on unit labels are observed. • Ensure that arrangements have been provided to drain the condensate. • Check out that all power cables are properly connected and all terminals are hardly fixed. • Check that electrical connections are carried out according to the norms in force including grounding. • Check out that the voltage is the one shown in the unit labels. • Make sure the voltage is within the limits (± 10%) of tolerance range. • Check out that crankcase heaters are powered correctly. • Check out that there is no refrigerant leakage. • Check out that all the cover panels are installed in the proper position and locked with fastening screws before start up. 15
WARNING: The unit must be connected to the electrical network and should be in STAND‐BY mode (powered) closing the general switch in order to operate the crankcase heaters of the compressor for a minimum of 12 hours before start up. (the heaters are automatically powered when the main switch is switched off). The crankcase heaters are working properly if, after some minutes, the temperature of crankcase’s compressor is about 10°C ÷ 15°C higher than ambient temperature. WARNING: Never switch off the unit (for a temporary stop) by switching off the main switch: this component should be used to disconnect the unit from the power supply only for lengthy stoppages (e.g. seasonal stoppages). Besides, failing the power supply, the crankcase’s heaters are not supplied thus resulting in a possible breakdown of the compressors once the unit is switched on. WARNING: Do not modify the internal wiring of the unit otherwise the warranty will terminate immediately. WARNING: The summer/winter operating mode have to be selected at the beginning of the related season. Frequent and sudden changes of this seasonal operating mode have to be avoided in order to prevent severe damages to compressors. WARNING: When you first install and start‐up the unit make sure that the unit is working properly in both cooling and heating modes. N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9 USER ‐ CONTROLLER INTERFACE It is used to select the operating mode, and to reset the manual resetting alarms. The operating mode changes as per the sequence below each time you press the Mode button: off Æ cool Æ heat Æ off
If the sanitary mode is enabled, the sequence is as follows: off Æ cool Æcool+sanÆ heat Æheat+sanÆoff During the parameters’ setting, this button can be used to revert BACK to the previous level. It allows you to enter into the setting menu parameters and to select the cool/summer, heat/winter and sanitary water set point value. UP button: In the setting mode, this button allows you to move up to a higher menu or to increase the value of a parameter when you are in the “edit” mode. DOWN button: In the setting mode, this button allows you to shift to a lower menu or to decrease the value of a parameter when you are in the “edit” mode. 9.1 MENU STRUCTURE DIAGRAM Level 0 (U) = always appearing Level 1 (M) = it appears if you enter the maintainer (H80) or manufacturer password Level 2 (C) = it appears if you enter the manufacturer password Level 3 (A) = it appears only via Modbus 9.1.1 ANALOG INPUT MENU By entering the maintainer password in the menu of analog inputs "tP", at the level 1 of the menu structure diagram of the unit control board, you can read the values of the current probes: t01: water inlet temperature (°C); t02: water outlet temperature (°C); t03: compressor inlet temperature (°C); t04: compressor discharge temperature (°C); t05: high pressure (bar); 16
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans t06: low pressure (bar); t07: outdoor air temperature (°C); t09: sanitary hot water temperature (°C) (if the hot water production is enabled). 9.2 PARAMETERS CATEGORIES DESCRIPTION Configuration Compressor Fan motor alarm Regulation (setting) Pompe Electric heater Defrost Electronic valve Offset GROUP CODE IDENTIFICATION CnF CP Fan ALL Re PUP Fro dFr EEu OFF PARAMETER INDEX H01‐ C01‐ F01‐ A01‐ B01‐ P01‐ R01‐ D01‐ U01‐ O01‐ 9.3 SETPOINT ADJUSTABLE BY THE USER Setpoint type Setpoint (summer/winter) Summer default (range) Winter default (range) First setpoint (°C) Coo/Hea 7 (5÷18) 45 (35÷55) Second setpoint (°C) Co2/He2 18 (7÷23) 35 (25÷45) Sanitary Setpoint (°C) San 48 (25÷55) The functionality of the second setpoint can be used only when you purchase the proper optional kit. 9.4 DISPLAY In Normal view displays the outlet water temperature reported to tenths of degrees, or the alarm code if at least an alarm is active. In case of multiple alarms activation, it will display the first alarm, while the second appears when the first is reset. Into the menu mode, the display depends on the current position where you are. 9.5 LED Compressor LED Sanitary water LED Defrosting LED •
•
•
•
•
•
•
•
•
ON if the compressor is running OFF if the compressor is off FLASHING if timings are in progress waiting for compressor’s start up ON if sanitary mode is active OFF if the sanitary mode is not active FLASHING if sanitary production in progress (sanitary valve is active) ON in defrost operating mode OFF if defrosting mode is disabled or completed FLASHING if defrosting cycle interval’s time is in progress. Antfreeze electric heater LED • The LED is ON if the antifreeze electric heater is active. Water pump LED • The LED is ON if the water pump is running. Alarm LED • The LED is ON if an alarm is activated. Heat LED • The LED is ON if the unit is in the heating mode operation. Cool LED • LED is ON if the unit is in the cooling mode operation. 9.6 DYNAMIC SET‐POINT ADJUSTMENT The controller can change the set‐point by adding a value depending on the outdoor air temperature sensor. In this case, you need to change the values of the parameters from b08 to b14 following the indications below (settings to be done by the installer): Prameters of the controller PAr‐>rE‐> • b08 = dynamic set‐point, enabled = 1/ unabled = 0 (must be disabled in the case of the use of climatic compensation from the optional remote keyboard CRH). • b09 = offset max in cooling mode operation. • b10 = offset max in heating mode operation. • b11 = Outdoor temperature setting in cooling mode. • b12 = Outdoor temperature setting in heating mode. • b13 = Temperature difference in cooling mode operation. 17
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans • b14 = Temperature difference in heating mode operation. Curve of the set‐point variation as a function of the outside temperature: Cooling Heating 9.7 0‐10V ANALOG INPUT FOR SET‐POINT REGULATION Another type of setting that allows to change the set‐point by adding (or subtracting) a value in function of the 0‐10V analog input (if enabled). To enable the function, you must set H21 = 40, and change the values of the parameter b15 (range 0‐10), taking into account that: ‐ if this input is at 0 volts you will have the actual set point: set point (Coo/Hea) ‐ b15/2. ‐ if the input is at 5 volts the set point will be the set one (Coo/Hea). ‐ if the input is 10 volts you will have the actual set point: set point (Coo/Hea) + b15/2. 18
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans The 0‐10V signal must be applied to the terminals 0‐10V + and 0‐10V‐ (see the wiring diagrams). Note: In "cooling" mode, considering that the set‐point by default is set to be 7°C, the parameter b15 should not assume any value greater than or equal to 6 in order to prevent that the new set‐point set from 0‐10V input can take values below the threshold of the antifreeze operation which is 4°C. 9.8 HYDRAULIC PUMP OPERATION The hydraulic pump can be set according to one of the three following types of operation: ‐ Operation by thermoregulator (default) ‐ Operation by thermoregulator with periodic activation ‐ Continuous operation The pump is switched off immediately with the alarm activation of the flow switch with manual reset. The pump is always turned on if the antifreeze heaters are running or when the hydraulic pump operates in antifreeze mode. The operation in antigel phase is enabled if the water setting temperature decreases below P04 °C (the default 5°C), and it will be disabled if the water setting temperature increases above P04+P05 °C (default value of P05=2,0°C). The pump speed adjustment is proportional to the variation of the difference of water temperatures [°C] (see Paragraphe 9.8.4). 9.8.1 OPERATION BY THERMOREGULATOR (Default) During this operating mode (P03=1, default), the thermoregulator actuates the pump; after a time delay of 20 seconds from actuation of the pump, the compressor also will be activated. However, in power off case, the pump turns off with a delay time of 120 seconds after the thermoregulator is in off state (the off mode corresponds to the turning off state of the compressor). In the case of the activation of the flowswitch alarms with automatic reset the pump is still operating even if the compressor is off. If you enable the operation of the minichiller from "on‐off" remote digital input (see Paragraph 9.10) the pump will be activated immediately for a duration of 2 minutes regardless of the indoor unit’s thermoregulation (the activation of water recirculation in the plant leads to a correct thermoregulation activation). 19
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans For V2+ series only, during the turning‐on there is a further delay between the thermoregulation activation and the pump switching‐on (see Pragraph 9.22). 9.8.2 OPERATION BY THERMOREGULATOR WITH PERIODIC ACTIVATION The function is disabled if P17= 0 (default). If the pump is set in operation by thermoregulator (P03 = 1, default), it will be activated periodically for a time periode defined by the parameter P17 (in seconds) after a counting time set by the parameter P16 (in minutes), activated when the pump is turned off for satisfied thermoregulation. In the case of the activation of the flowswitch alarms with automatic reset the pump is still operating even if the compressor is off. The periodic function is also interrupted in the case of the intervention of the antifreeze thermoregulator that constrains the opeartion of the pump. 9.8.3 CONTINUOUS OPERATION In this operating mode, enabled if P03=0, the pump is always turned on. It turns off only when there is in OFF state and, for the V2+ series only, during the operatiom mode change over, such as cooling/heating and heating/cooling. 20
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9.8.4 PROPORTIONAL ADJUSTMENT OF THE PUMP The pump speed can vary as a function of the temperature difference between the water inlet and the water outlet of the heat exchanger, according to the diagram shown below, where: P07: maximum speed of the modulating pump (%) P08: minimum speed of the modulating pump (%) P09: set Delta T inlet/outlet water of the modulating pump (°C) P10: Delta modulating pump (°C) In sanitary hot water production mode the pump will operate at its maximum speed. 9.9 ANTIFREEZE PROTECTION ELECTRIC HEATERS (IF THE KA ACCESSORY IS PRESENT) The electric heaters of water antifreeze, installed on the outer surfaces of the evaporator plates, activates even when the unit is switched off (but energized) if the outlet water temperature goes below r02 °C (default is 4°C) in heating mode or below r03 °C (default is 4°C) in cooling mode and in shut off condition. The same electric heaters are switched off when the temperature measured by the outlet water sensor exceeds r02+r06 in heating mode or r03+r06 in cooling mode and in shut off condition. The heating cable placed on the basement of the appliance turns on when the outdoor air temperature decreases below 3°C or when the unit starts the defrosting cycle. It will be disactivated if the outdoor temperature exceeds 5°C. 9.10 ON/OFF REMOTE CONTROL AND SUMMER/WINTER MODES The terminal block has two digital inputs to control the unit via an external consent. SW‐SW: Summer/winter switching mode input via remote control. To enable this feature, set the parameter H76=1. The parameter is protected by maintainer password (could be changed by the installer). At Open Contact, the unit will be set in heating mode and at Closed Contact, it will be set in cooling mode. onoff‐onoff: Remote on‐off input. The feature is already enabled by default. Remove the bridge connection in the terminal block to put the unit in stand‐by mode (in such a state the code ''E00'' will appear on the display of the unit). When the contact is closed, the unit quits the standby mode and the circulator will turn on for 2 minutes. If the sanitary operating mode is activated, the on‐off remote function will switch off the machine provided the sanitary set had not yet been reached (in such a state the word ''SAN'' will appear on the display of the appliance). 9.11 REMOTABLE WATER TEMPERATURE SENSOR In some plant solutions (eg: heat pump in parallel to the boiler in the same hydronic circuit and diverter valve of exclusion) may be necessary to remote the temperature sensor of the plant in order that the on board controller can process correctly the management of the plant. To adjust the remote‐sensor, please set the parameters as H19=41 and H44=0 and then connect the remote‐sensor to SE‐SE terminals, otherwise you should set H20=41 and H45=0 if you want to connect the remote‐sensor to SAN‐SAN terminals). 9.12 ACTIVATION OF SANITARY HOT WATER PRODUCTION To activate the hot sanitary water function, be sure to install a temperature sensor inside the tank and to connect it to the SAN‐
SAN terminals (enabled as analog input). Once the temperature sensor is installed and connected, it is necessary to set the parameter H10 = 1, and to set the parameter H20 = 6 to enable the analog input for the sensor. To set these parameters, please enter the maintainer password and then enter the PRG‐>Pss‐>PAr‐>Cnf‐>H10/H20 parameters (the configuration could be done by the installer). 21
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans If the hot sanitary water temperature is below the set point value (set at 48°C by default and adjustable by entering the PRG‐> Set‐
>SAN menu), the unit activates the sanitary valve and the frequency of the compressor will be reduced to the minimum value for 2 minutes, in such a way that the valve can divert the water flow towards the sanitary tank. After the water flow is diverted, the compressor changes the frequency to the maximum value till the temperature reaches the set point of sanitary water. Once reached the set point value, the valve switches to the stand‐by mode and the compressor works normally. When using a 3‐way valve to switch‐over with 3 contacts for power supply, it must be connected to the terminals NO1, N, NC1. Otherwise, in the case of using a 3‐way valve for switching‐over with 2 contacts for power supply (with spring return), it must be connected to the terminals NO1 and N. Closed contact NO1 means that the valve is energized and diverts the water flow to the sanitary water tank. Open contact NO1 means that the valve is de‐energized and diverts the water flow to users. While shifting from domestic water to sanitary water, the operating sensor changes from “outlet water sensor” to “sanitary tank sensor”. While shifting from the winter operating mode to the sanitary operating mode, the compressor does not switch off, and reaches the maximum established frequency that to be controlled; on the other hand, while shifting from the summer operating mode to the sanitary operating mode, the compressor is switched off to wait for the safety timing. 9.12.1 SENSOR IN HEATING MODE MEMORY In the case of commutation from water users to the sanitary water, the temperature sensor changes from a "water outlet temperature sensor" to a "water tank temperature sensor". For such reason, in heating mode, the last value read by the sensor will be memorised before changing to sanitary mode. When the sanitary thermoregulation is reached, the reference temperature on the plant side will take the value which is previously memorised. The memory function will be deactivated: ‐ When the temperature detected by the sensor becomes lower than the memorised value; ‐ Or expired a time equal to b06 seconds (default 45 seconds). 9.12.2 CALL OF SANITARY HOT WATER PRODUCTION FROM DIGITAL INPUT Differently to the use of the temperature probe, the activation of the sanitary hot water function may be by closing the digital input (SAN‐SAN terminals enabled as digital input) of the minichiller. This function is recommended in the case of use of two or more minichillers in cascade linked trougth a hydronic connection to the same accumulation tank of sanitary hot water; in this way the activation of sanitary hot water function will be selected through the probe of the accumulation tank connected to the first minichiller, while the other minichillers will be automatically enabled by digital consent. Only for the units with the calling of sanitary hot water production by digital input, as well as enabling the sanitary function with H10=1, it must therefore enable the digital input by setting the parameters H45=28, H54=128. For each minichiller (except the last one of the cascade), you must use a relay (not included), controlled by the output 230VAC NO1 and N of the terminal block, that can enable through its free contacts COM and NO the SAN‐SAN digital input of the following minichiller in the cascade. Please refer to the wiring diagram below for such configuration. 22
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans NOTE: turning off the unit remotely (onoff‐onoff terminals), or by the on board keyboard, or by a remote keyboard does not affect the sanitary operating mode. Once the H10 parameter is set to be 1, the unit switches to sanitary priority as soon as powered. The on board display shows the temperature measured by the sensor placed inside the sanitary water tank. Once the sanitary cycle is completed, the display returns to show the outlet water sensor temperature. If the remote ON‐OFF digital input (onoff onoff terminals) is opened, with the enabling of sanitary hot water production (H10=1 and H20=6), the display on the unit shows the the word "SAN". Once the sanitary cycle is concluded, the display returns to show the code "E00" indicanting that the remote ON‐OFF contact is opened. The defrost during winter operation mode is always performed on the user side, never on the sanitary water tank. 23
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9.13 HEATING MODE ON SANITARY ACCUMULATION If the parameter H83=1, the appliance exploits the accumulation tank for sanitary hot water also to heat the plant side. In these conditions, the relay which controls the sanitary valve will be also energized during heating operation and not only in sanitary mode. During the defrost periode and in cooling mode the valve will be de‐energized. When H83=1, the sanitary auxiliary electric heater can be enabled also to act as a plant auxiliary electric heater: to this purpose you should set r10=1 and r15=2 (for further settings of the parameter r15 please see Paragraph 9.15); also no digital output has to be set for the auxiliary electric heater for the plant. 9.14 AUXILIARY ELECTRIC HEATER OF THE PLANT The output of the auxiliary electric heater of the plant is active only when the parameter H58 is set to 22 (AEH‐AEHN 230V output, already set as default) or H61=22 (NO1‐N 230V output, not set as default) (for other outputs that can be used in the terminal block and for their configurations please see the Paragraph 9.25). The heaters operates when the parameter r10 is set to be 1. The parameter r24 must also set to 1 or 3 (please refer to the explanation of the r24 parameter settings in the Paragraph 9.17). When the heat pump is operating normally, if the regulation temperature remains below the water setpoint minus r11 (°C) and the unit gets blocked due to an alarm intervention, the heater will thus be turned on. It will turn off after the unit gets out from the alarm condition. The auxiliary electric heater can also be turned on when the heat pump is not in alarm condition: according to the type of the unit’s operation, if the unit is in joint or in substitution areas (as seeing in the Paragraph 9.17), if the hot water production persists beyond the time of intervention set by the parameter r12 (minutes) and if the detected water temperature remains always below the setpoint minus r11 (°C). In these conditions the auxiliary electric heater turns on. It turns off when the unit reaches the set point (taking into account also of any offset set by the parameters r29 or r30, see the paragraph 9.17.) 9.14.1 AUXILIARY ELECTRIC HEATER OF THE PLANT IN DEFROST CYCLE During the defrost cycle (see Paragraph 9.20), by setting r21=1 (in addition to r10=1 and r24=1 or 3) the electric heater of the plant side will be activated if required (detected (regulating) temperature lower than the water setpoint minus r11 (°C)), without waiting for the time defined by r12. 9.15 ELECTRIC HEATER OF SANITARY WATER PRODUCTION It is an additional energy resource for the sanitary water tank heating when the compressor is not able to meet the set temperature within a reasonable time. The output of the auxiliary electric heater of sanitary water is active only if the parameter H58 is set to 26 (230V AEH AEHN output, it is not set as default) or H61=26 (230V NO1‐N output, it is not set as default) (Please refer to Paragraph 9.25 for other available outups in the terminal block as well as for their corresponding configurations). The heater is activated when the parameter r15 is set to 1 (with r15=0 the electric heater is deactivated). The parameter r24 must be set to 2 or 3 (please refer to the explanation on r24 parameter settings at the Paragraph 9.17). If the production of sanitary hot water lasts for a period of time greater than r16 (minutes) and the unit gets blocked due to an alarm intervention, the electric heater will be enabled. It turns off when the unit concludes the sanitary water production (taking into account also of any offset set by the parameters r31 as described in the paragraph 9.17.) 9.16 SELECTION MODE OF AUXILIRY ELECTRIC HEATERS It is possible to set the order priority of the activation of auxiliary electric heaters of the plant side and of sanitary side as in the following configurations: 1. r14=0 (default), the heaters are activated simultaneously if they are present; 2. r14=1, the heaters are activated exluding each other: 2.1. r20=0, the priority is for the plant (the sanitary heater will operate only if the thermoregulation for the heater of plant side is accomplished); 2.2. r20=1, the priority is for the sanitary (the heater of the plant side will operate only if the thermoregulation of the sanitary heater is accomplished). 9.17 ACTIVATION OF AUXILIARY ELECTRIC HEATER AND BOILER DURING THE JOINT/IN SUBSTITUTION OPERATION TO THE COMPRESSOR The compressor is inhibited at low outdoor air temperature. Considering this mode, there are 4 operation areas of the minichiller: 1) heat pump operation (normal operation, with compressor enabled) in which the auxiliaries electric heaters and the boiler operate only when the heat pump gets blocked due to an alarm intervention; 2) joint operation (area I), in which the use of the compressor in synergy with axiliaries heaters is enabled (during winter or sanitary mode, if the outdoor air temperature decreases under r22(°C) (default 7°C) but it remains above r28 (default is ‐
7°C). The operation becomes normal if the temperature increases above the value of r22 + 1,0°C. Particularly, in this operation area, the auxiliary heaters and the boiler will operate after a periode of time defined by the parameters r12 (in minutes) for the plant side and r16 (in minutes) for the sanitary mode, counting from the heat pump startup, according to the priorities set by the parameters r14, r20 (see Paragraph 9.16) and r23, r24 (see the explanation below). For using the auxiliary electric heaters, you should enable them by setting the parameter r10 (case of the plant auxiliary heater, see Paragraph 9.14) and the paramter r15 (case of auxiliary electric heater of sanitary, see Paragraph 9.15). 3) joint operation (area II), in which the compressor and the auxiliary electric heaters are both enabled (during winter or sanitary mode, if the outdoor temperature decreases under r28 (°C) (default ‐7°C) but remains above r08 °C, default ‐
24
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 16°C). The unit turns to operate normally when the temperature increases above the value r28+1,0(°C). In particular, in this operating area, the boiler turns on first, then the heat pump and the auxiliary electric heaters will turn on after a time defined by r12 ( minutes) for plant side and r16 (minutes) for sanitary side, according to the priorities fixed by the parameters r14, r20 (see Paragraph 9.16) and r23, r24. When using the auxiliary electric heaters, you should enable them by setting the parameter r10 (in the case of the auxiliary electric heater of the plant, see Paragraph 9.14) and the parameter r15 (in the case of the auxiliary electric heater of the sanitary operation, see Paragraph 9.15). If you want to set that the auxiliary electric heater (of the sanitary or plant side) operates after the heat pump startup, it is necessary to enable the boiler by setting the parameter r23 to be 4, 5 or 6, whereas if you want that the auxiliary electric heater turns on before the heat pump startup, you must set the parameter r23 to 0, 1, 2 or 3 (therefore also including the case when the boiler is not in utilization). 4) Substitution operation, in this kind of operation the use of the compressor will be inhibited and the auxiliary equipments operate in substitution of it, depending on the period of time defined by the parameter r12 (minutes) for plant side and r16 (minutes) for sanitary side, (in winter or sanitary mode, if the outdoor temperature drops below r08 (°C), default ‐
16°C. The compressor will be again activated when the temperature rises above r08 +r09(°C) (r09=1,0°C by default). Tout.[°C]
r22=7
0
Heat pump
Heat pump + [Boiler and/or electric heater]
IN JOINT OPERATION I
r28=‐7
Boiler + [Heat pump and/or electric heater]
IN JOINT OPERATION II
r08=‐16
[Boiler and/or electric heater]
IN SUBSTITUTION OPERATION
When modifying the values of the parameters r22, r28, r08, you have to respect the following condition: r22 ≥ r28 ≥ r08. You can remove the zone corresponding to the joint operation area I just by putting r22=r28; you can also remove the zone corresponding to the joint operation area II by putting r28=r08; and hence you can remove both joint operation areas I and II just by setting the three parameters as the following configuration r22=r28=r08. The auxiliary equipments available for the joint operation or for the in substitution operation are: ‐ boiler (or external heaters with independent thermoregulation), present if H58=29 (AEH AEHN 230V output not set by default) or H61=29 (NO1‐N 230V output not set by default); (Please refer to Paragraph 9.25 for other available outputs that can be used in the terminal block as well as for their corresponding configurations). ‐ Plant auxiliary electric heater (see Paragraph 9.14); ‐ Sanitary auxiliary electric heater (see Paragraph 9.15). For the allowed configurations and the available digital outputs of the terminal block, please refer to the paragraph 9.25 and wiring diagrams. To define how to use the auxiliary equipments, you must set the two parameters r23 and r24 in order to control respectively the use of the boiler and the use of the auxiliary electric heater OF the plant: ‐ r23=0 boiler not used (priority of intervention is for electric heaters); ‐ r23=1 boiler used just on plant side (priority of intervention is for electric heaters); ‐ r23=2 boiler used just for sanitary hot water (priority of intervention is for electric heaters); ‐ r23=3 (default) boiler used for both sanitary hot water and plant (priority of intervention is for electric heaters); ‐ r23=4 boiler used only for plant side with priority (no intervention priority for electric heaters); ‐ r23=5 boiler used only for sanitary hot water with priority (no intervention priority for electric heaters); ‐ r23=6 (default) boiler used on both sanitary and plant sides with priority (no intervention priority for auxiliary electric heaters); ‐ r24=0 the auxiliary electric heaters are not used; ‐ r24=1 Utilization only of the auxiliary electric heater of the plant side; ‐ r24=2 Utilization only of the auxiliary electric heater of sanitary hot water production; ‐ r24=3 Utilization of both auxiliary electric heaters of plant side and of sanitary hot water production. Note: On the first three operating areas (heat pump operation, joint operation area I and joint operartion area II), the parameter r10 must be set to 1 in order to enable the auxiliary electric heater of the plant, while the parameter r15 must be set to 1 in order to enable the auxiliary electric heater of the sanitary hot water production. During the substitution operation, instead it is not necessary to enable the auxiliary electric heaters with the parameter r10 or r15, because the auxiliary electric heaters operate in 25
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans substitution (and not as auxiliary heating systems) to the heat pump (therefore it is enough to select the type of utilization of the auxiliary electric heaters by setting only the parameter r24). Then, It is possible to set an analog input in the minichiller for a remote temperature sensor, in order to detect the temperature of the water plant (setting H19=41 and H44=0 and connect the remote temperature sensor to SE‐SE terminals, otherwise setting H20=41 and H45=0 for connecting the remote temperature sensor to SAN‐SAN terminals) (See paragraph 9.11). The possible configurations of the parameters related to auxiliary heaters are listed below in the tables 1, 2, 3 and 4, that are divided by areas of operation (the columns of "MODE" and "rxx" parameters indicate the operation mode and the possible values of the parameters for allowing the auxiliary heaters to intervene according to a predefined order of intervention, when the unit is running in a certain type of operation; several modes and values of the parameters can be alternatively selected and they are reported in the same cell separated by the symbol "/"). N° 1 2 3 4 5 6 7 8 9 10 11 12 TABLE 1. NORMAL OPERATION IN HEAT PUMP MODE ORDER OF INTERVENTION OF HEATING SYSTEMS (when the set‐
MODE OPERATION r10 r15 r12 point is not achieved and the unit is in alarm condition) HEAT / 1) Auxiliary electric heater of plant HEAT 1 0/1/2 / HEAT+SAN HEAT / 1) Boiler HEAT 0/1 0/1/2 / HEAT+SAN 1) Auxiliary electric heater of plant HEAT / Set up of HEAT 1 0/1/2 2) After r12 minutes, Boiler HEAT+SAN minutes 1) Boiler HEAT / Set up of 2) After r12 minutes, auxiliary HEAT 1 0/1/2 HEAT+SAN minutes electric heater of plant 1) 1) Auxiliary electric heater of HEAT+SAN SANITARY 0/1 1 / sanitary HEAT+SAN/ 1) Boiler SANITARY 0/1 0/1/2 / COOL+SAN 1) Auxiliary electric heater of sanitary HEAT+SAN SANITARY 0/1 1 / 2) After r15 minutes, boiler 1) Boiler 2) After r15 minutes, auxiliary HEAT+SAN SANITARY 0/1 1 / electric heater of sanitary 1) Auxiliary electric heater of HEAT / IN HEAT OR IN 1 1 / Plant/sanitary HEAT+SAN SANITARY 1) Boiler HEAT / IN HEAT OR IN 0/1 0/1/2 / HEAT+SAN SANITARY 1) Auxiliary electric heater of HEAT / IN HEAT OR IN Set up of plant/sanitary 1 1 HEAT+SAN SANITARY minutes 2) After r12 minutes, Boiler 1) Boiler HEAT / IN HEAT OR IN Set up of 2) After r12 minutes, auxiliary 1 1 HEAT+SAN SANITARY minutes electric heater of plant/sanitary r16 r23 r24 / 0/2/5 1/3 / 1/3/4/6 0/2 / 1/3 1/3 / 4/6 1/3 / 0/1/4 2/3 / 2/3/5/6 0/1 Set up of minutes 2/3 2/3 Set up of minutes 5/6 2/3 / 0 3 / 3/6 0 Set up of minutes 3 3 Set up of minutes 6 3 TABLE 2. JOINT OPERATION, AREA 1 ORDER OF INTERVENTION OF N° HEATING SYSTEMS (when the set‐
point is not achieved) 1) Heat pump 1 2) After r12 minutes, auxiliary electric heater of plant 1) Heat pump 2 2) After r12 minutes, boiler 1) Heat pump 2) After r12 minutes, auxiliary 3 electric heater of plant 3) After r12 minutes later, boiler 1) Heat pump 4 2) After r12 minutes, boiler MODE OPERATION HEAT / HEAT HEAT+SAN HEAT / HEAT HEAT+SAN r10 r15 r12 r16 r23 r24 1 0/1/2 Set up of minutes / 0/2/5 1/3 0/1 0/1/2 Set up of minutes / 1/3/4/6 0/2 HEAT / HEAT HEAT+SAN 1 0/1/2 Set up of minutes / 1/3 1/3 HEAT / HEAT HEAT+SAN 1 0/1/2 Set up of minutes / 4/6 1/3 26
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 5 6 3)After r12 minutes later, auxiliary electric heater of plant 1) Heat pump 2) After r15 minutes, axiliary electric heater of sanitary 1) Heat pump 2) After r15 minutes, boiler 1) Heat pump 2) After r15 minutes, auxiliary 7 electric heater of sanitary 3) After r15 minutes later, boiler 1) Heat pump 2) After r15 minutes, boiler 8 3) After r15 minutes later, auxiliary electric heater of sanitary 1) Heat pump 9 2) After r12 minutes, auxiliary electric heater of palnt/sanitary 1) Heat pump 10 2) After r12 minutes, boiler 1) Heat pump 2) After r12 minutes, auxiliary 11 electric heater of plant/sanitary 3) After r12 minutes later, boiler 1) Heat pump 2) After r12 minutes, boiler 12 3) After r12 minutes later, auxiliary electric heater of plant/sanitary / Set up of minutes 0/1 0/1/2 / Set up of minutes HEAT+SAN SANITARY 0/1 1 / Set up of minutes 2/3 2/3 HEAT+SAN SANITARY 0/1 1 / Set up of minutes 5/6 2/3 1 1 Set up of minutes Set up of minutes 0 3 Set up of minutes Set up of minutes 3/6 0 HEAT+SAN SANITARY 0/1 HEAT+SAN SANITARY HEAT / HEAT OR IN HEAT+SAN SANITARY HEAT / IN HEAT OR IN HEAT+SAN SANITARY 1 0/1 0/1/2 0/1/4 2/3 2/3/5/6 0/1 HEAT / IN HEAT OR IN HEAT+SAN SANITARY 1 1 Set up of minutes Set up of minutes 3 3 HEAT / IN HEAT OR IN HEAT+SAN SANITARY 1 1 Set up of minutes Set up of minutes 6 3 r12 r16 r23 r24 Set up of minutes / TABLE 3. JOINT OPERATION, AREA 2 ORDER OF INTERVENTION OF N° HEATING EQUIPMENTS (when the MODE set‐point is not achieved) 1) Boiler HEAT / 1 2) After r12 minutes, heat pump HEAT+SAN 1) Boiler 2) After r12 minutes, auxiliary HEAT / 2 electric heater of plant HEAT+SAN 3) After r12 minutes later, heat pump 1) Boiler 2) After r12 minutes, heat pump HEAT / 3 3) After r12 minutes later, auxiliary HEAT+SAN electric heater of plant 1) Auxiliary electric heater of plant HEAT / 4 2) After r12 minutes, heat pump HEAT+SAN 1) Boiler 5 HEAT+SAN 2) After r15 minutes, heat pump 1) Boiler 2) After r15 minutes, auxiliary 6 electric heater of sanitary HEAT+SAN 3) After r15 minutes later, heat pump 1) Boiler 2) After r15 minutes, heat pump 7 HEAT+SAN 3) After r15 minutes later, auxiliary electric heater of sanitary 1) Auxiliary electric heater of 8 sanitary HEAT+SAN/ 2) After r15 minutes, heat pump 27
OPERATION HEAT r10 r15 0/1 0/1/2 1/3/4/6 0/2 HEAT 1 0/1/2 Set up of minutes / 1/3 1/3 HEAT 1 0/1/2 Set up of minutes / 4/6 1/3 HEAT 1 0/1/2 Set up of minutes / 0/2/5 1/3 SANITARY 0/1 0/1/2 / Set up of minutes SANITARY 0/1 1 / Set up of minutes 2/3 2/3 SANITARY 0/1 1 / Set up of minutes 5/6 2/3 SANITARY 0/1 1 / Set up of minutes 0/1/4 2/3 2/3/5/6 0/1 N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 1) Boiler 2) After r12 minutes, heat pump 1) Boiler 2) After r12 minutes, auxiliary 10 electric heater of plant/sanitary 3) After r12 minutes later, heat pump 1) Boiler 2) After r12 minutes, heat pump 11 3) After r12 minutes later, auxiliary electric heater of plant/sanitary 1) Auxiliary electric heater of 12 plant/sanitary 2) After r12 minutes, heat pump 9 HEAT / HEAT+SAN IN HEAT OR IN SANITARY 1 1 Set up of minutes Set up of minutes 3/6 0 HEAT / HEAT+SAN IN HEAT OR IN SANITARY 1 1 Set up of minutes Set up of minutes 3 3 HEAT / HEAT+SAN IN HEAT OR IN SANITARy 1 1 Set up of minutes Set up of minutes 6 3 HEAT / HEAT+SAN IN HEAT OR IN SANITARY 1 1 Set up of minutes Set up of minutes 0 3 r15 r12 r16 r23 r24 TABLE 4. SUBSTITUTION OPERATION ORDER OF INTERVENTION OF N° HEATING SYSTEMS (when the set‐
point is not achieved) 1) Boiler 1 2) After r12 minutes, auxiliary electric heater of plant 1) Auxiliary electric heater of plant 2 2) After r12 minutes, boiler 1) Boiler 3 2) After r12 minutes, Auxiliary electric heater of sanitary 1) Auxiliary electric heater of 4 sanitary 2) After r12 minutes, boiler 1) Boiler 5 2) After r12 minutes, auxiliary electric heater of plant/sanitary 1) Auxiliary electric heater of 6 plant/sanitary 2) After r12 minutes, boiler MODE OPERATION HEAT / HEAT+SAN HEAT 0/1 0/1/2 Set up of minutes / 4/6 1/3 HEAT / HEAT+SAN HEAT 0/1 0/1/2 Set up of minutes / 1/3 1/3 HEAT+SAN SANITARY 0/1 0/1/2 / Set up of minutes 5/6 2/3 HEAT+SAN SANITARY 0/1 0/1/2 / Set up of minutes 2/3 2/3 HEAT / HEAT+SAN IN HEAT OR IN SANITARY 0/1 0/1/2 Set up of minutes Set up of minutes 6 3 HEAT / HEAT+SAN IN HEAT OR IN SANITARY 0/1 0/1/2 Set up of minutes Set up of minutes 3 3 HEAT 0/1 0/1/2 HEAT 0/1 0/1/2 HEAT / HEAT+SAN HEAT / HEAT+SAN r10 Set up of minutes Set up of minutes 7 1) Boiler 8 1) Auxiliary electric heater of plant 9 1) Boiler HEAT+SAN SANITARY 0/1 0/1/2 / 10 1) Auxiliary electric heater of sanitary HEAT+SAN SANITARY 0/1 0/1/2 / HEAT / HEAT+SAN HEAT / HEAT+SAN IN HEAT OR IN SANITARY IN HEAT OR IN SANITARY 11 1) Boiler 12 1) Auxiliary electric heater of plant/sanitary 0/1 0/1/2 0/1 0/1/2 Set up of minutes Set up of minutes / / Set up of minutes Set up of minutes Set up of minutes Set up of minutes 1/3/4/6 0/2 0/2/5 1/3 2/3/5/6 0/1 0/1/4 2/3 3/6 0 0 3 28
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans The below Table (5) shows the parameter to be set in order to enable the auxiliary electric heaters in "Summer and sanitary" mode (in this case, the only available auxiliary electric heater is the one of sanitary side and the subdivision between normal/joint/substitution operation is not valid ). TABLE 5. OPERATION IN COOL+SAN MODE (SANITARY MODE IS OPERATING) ORDER OF INTERVENTION OF AUXILIARY ELECTRIC HEATERS ‐ when the set point is not achieved N° after r16 minutes from the compressor MODE OPERATION r10 r15 r12 r16 r23 r24 startup or ‐ when the set‐point is not achieved and the unit is in alarm condition. Set up of 1 1) Auxiliary electric heater of sanitary COOL+SAN SANITARY 0/1 1 / 0/1/2/3/4/5/6 2/3 minutes The below Table (6) shows the behavior of the auxiliary electric heaters of both sanitary and plant in all cases where the unit is operating. N° MODE OPERATION 1 HEAT+SAN HEAT 2 HEAT+SAN SANITARY 3 4 COOL+SAN COOL+SAN SANITARY COOL TABLE 6. OPERATION OF AUXILIARY ELECTRIC HEATERS AUXILIARY ELECTRIC HEATER OF PLANT AUXILIARY ELECTRIC HEATER OF SANITARY During "HEAT+SAN" operation, the sanitary thermoregulation by default will have priority over that of the plant side, so if the It works as indicated in the TABLES 1,2,3 and 4. thermoregulation is required, the unit will start the "SANITARY" mode operation and the the auxiliary electric heater of sanitary side behaves as described in the TABLES 1 , 2, 3 and 4. Only if the following 3 conditions are fulfilled: ‐ Output for auxiliary electric heater of plant side is configurated; ‐ r24=1/3; ‐ the remote sensor of water plant temperature is installed and configured (see paragraph 9.11); the auxiliary electric heater of the plant is available: - after r12 minutes from the beginning of its counting when activated previously in It works as indicated in the TABLE 1,2,3 and 4. “HEAT” operation mode (see line N°1); - if not already activated its counting in the previous "HEAT" operation mode, after r12 minutes from the thermoregulation requirement. In SANITARY mode, if the remote sensor is not set, the auxiliary electric heater of the plant will be disabled or its eventual counting will be stopped. If the "on‐off remote contact" turns to the open state, the auxiliary electric heater of the plant will turned off. Not available. It works as indicated in the TABLE 5. Not available. Not available. During the joint operation or in substitution operation, for boiler and/or auxiliary electric heaters (depending on your resources and on the selected priorities) it is possible to determine a set‐point in heating or sanitary greater than the one of the heat pump. This is achieved by setting a temperature offset for the set point: ‐ r29: Temperature offset for boiler and electric heaters of the plant for the first set point (G02); 29
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans ‐ r30: Temperature offset for boiler and electric heaters of the plant for second set point (G05); ‐ r31: Temperature offset for boiler and sanitary electric heaters (G03). In this way, the heat pump will stop when achieving the set‐point (G02, G03, G05) and the temperature difference can be supplemented by the boiler and/or electric heaters according to the selected temperature offset. 9.18 INDICATION ON SUMMER/WINTER OPERATION You can set a digital output to indicate the operating mode of the unit, plant side (the digital outputs are at 230V AC, therefore they must control a relay, not included, with free contacts). The digital outputs are set when the value 31 is attributed to the parameters H58 (AEH‐AEHN 230V output) or H61 (NO1‐N 230V output) (Please refer to Paragraph 9.25 for other outputs that can be used in the terminal block as well as for their corresponding configurations). The output is active during summer operation while is disabled in OFF mode or winter mode. During sanitary hot water production and defrosting mode, the output keeps the setting of the last operating mode (winter or summer mode). 9.19 HEAT DISSIPATION FAN MOTOR CONTROL The control of the dissipation is as a function of the condensing pressure in chiller mode, whereas is as a function of the evaporation pressure in heat pump mode. The adjustment of the fan speed occurs depending on the operation of the compressor. 9.19.1 FAN SPEED CONTROL IN COOLING MODE For the fan speed control in cooling mode please refer to the diagram shown below, where: F08 = Set pressure to the minimum fan speed in cooling mode F09 = Fan proportional band in cooling mode F10 = Delta cut‐off of the fan in heating/cooling mode F11 = Cut‐off hysteresis in cooling/heating mode F14 = Set pressure to the maximum fan speed in cooling mode Pre‐ventilation period in chiller mode: before the compressor startup, the fan starts operation for 5 seconds; the fan speed is proportional to the condensation temperature, however, if the controller requires the cut‐off during this period, the motor fan will run at preset minimum fan speed. This function has the purpose to prevent the compressor startup at a very high condensation temperatures. 9.19.2 FAN SPEED CONTROL IN HEATING MODE For the fan speed control in heating mode refer to the diagram shown below, where: F17 = Pressure set for the minimum fan speed in heating mode F18 = Fan proportional band in heating mode F10 = Delta cut‐off of the fan in cooling/heating mode F11 = Cut‐off hysteresis in cooling/heating mode 30
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans F20 = Pressure set for the maximum fan speed in heating mode 9.20 DEFROSTING CYCLE The defrost cycle function is available only in heat pump mode and is used to prevent the frost formation on the surface of the air/air coil. The frost formation on the evaporator, which occurs more frequently at very low ambient temperatures, in addition to greatly decreasing the thermal efficiency of the unit, it can lead to the risk of damaging the unit itself. 9.21 COMPRESSOR CRANCKASE HEATER The crankcase heater operates when the compressor remains off for at least 30 minutes and if the discharge temperature is below 20°C (with hysteresis of 2.0°C). When the compressor restarts, the crankcase heater will stop. 9.22 WATER SIDE DIVERTING VALVE (PRESENT ONLY ON V2+ SERIES) The V2+ models which only requires a diverting valve for water side with 3 contacts and limit switch. The valve switches operation between heating (or sanitary) mode and cooling mode. When the unit is OFF, the last position of the valve will be kept. Associated with the adjustment of the valve there is also an activation time delay of the pump and of the circulator, which is necessary for allowing the complete commutation of the valve itself. The diverting valve gets on when you set the operating mode of the unit, and when the unit changes operation from sanitary or heat mode to cold mode and vice versa. The commutation is not expected, however, if the unit restarts with the last configuration or if it is in sanitary or heat mode and should enter in defrost cycle. 9.23 AVAILABLE FUNCTIONS WITH Hi‐T ACCESSORY 9.23.1 SCREED COAT FUNCTION A function for the grip of the screed coat in the installation of radiant plants is implemented. This function is avalaible only if the unit is associated with the accessory Hi‐T, for more information please refer to the manual of the Hi‐T controller. 9.23.2 DISINFECTION FUNCTION(ANTI‐LEGIONELLA) A function of disinfection antilegionella is implemented in our appliances. This function is avalaible only if the unit is associated with the accessory Hi‐T, for more information please refer to the manual of this controller. The parameters related to the disinfection function are: ‐ r25: Disinfection setpoint (anti‐legionella bacteria) (in °C); ‐ r26: Disinfection duration (in minutes); ‐ r27: Heat pump operating set point in disinfection mode (in °C). 9.24 HANDBOOK FOR CONFIGURATIONS OF INSTALLATION If you need more information about the possible configurations, there is a handbook, that is a technical book containing a series of recommended drawings of plants that have been highlighted regarding the installation configuration of our high efficiency heat pumps. The "Handbook" aims also the task of showing the symbiotic potential with some of our items in the catalog. You can contact our office for asking the handbook. 31
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9.25 TABLES OF CONFIGURATIONS ALLOWED TO USER AND INSTALLER 9.25.1 Table of configurations of V2/V2 with KA series Parameter Description Coo First setpoint in cooling mode Hea First setpoint in heating mode San Sanitary water temperature Setpoint Co2 Second setpoint in cooling mode He2 Second setpoint in heating mode Unit °C °C °C °C °C Default 7,0 45,0 48,0 18,0 35,0 Range Visibility 5,0÷Co2 U He2÷55,0 U 25,0÷55,0
U Coo÷23,0 U 25,0÷Hea U Admitted configuration 0 = disabled function 1 = enabled function H10 Enabling the sanitary function / 0 0÷1 I H19 ST8 input configuration / 0 0÷41 I 0 = input not assigned 41 = water temperature remote sensor H20 ST9 input configuration / 0 0÷40 I 0 = input not assigned 6 = sanitary water temperature H21 ST10 input configuration / 0 0÷40 H44 DI7 configuration / 26 0÷40 H45 DI8 configuration / 0 0÷40 H54 Digital input polarity / 0 0÷255 H58 DO3 configuration / 22 0÷32 H59 DO4 configuration / 0 0÷32 H60 DO5 configuration / 0 0÷32 H61 Open collector 1 configuration / 6 0÷32 H62 Open collector 2 configuration / 25 0÷32 H76 Remote operating mode selection (summer/winter) / 0 0÷1 H79 Serial address / 1 1÷200 H82 Enabling dual setpoint / 0 0÷4 H83 Enabling heating always diverted towards the sanitary mode / 0 0÷1 Note SE‐SE terminals Available input in exclusion of D.I.7 (if you will use it, please put H44=0) SAN‐SAN terminals Available input in exclusion of D.I.8 0 = input not assigned 40 = 0‐10V input 0 = input not assigned 26 = second set‐point humidistat I SE‐SE terminals 28 = actuation of sanitary thermoregulation by digital input 0 = input not not assigned SAN‐SAN terminals 26 = second set‐point humidistat I Available input in exclusion 28 = actuation of sanitary of ST9 thermoregulation by digital input 0 = digital inputs polarity = NO 64 = polarity DI7=NC (for activation of sanitary thermoregulator by digital I input, SE‐SE terminals) 128 = polarity DI8=NC (for activation of sanitary thermoregulator by digital input, SAN‐SAN terminals) 0 = input not assigned Connect AEH‐AEH terminals 22 = auxiliary electric heater of the plant I to the coil of the contactor 26=sanitary water auxiliary electric heater (contact NO 230Vac) 29 = boiler I/Not 0 = input not assigned DO4N‐DO4 terminals appearing 22 = auxiliary electric heater of the plant It is necessary to use an if the KA 24 = alarm external relay in order to Kit is 26 = auxiliary electric heater of sanitary reduce the total power factory 29 = boiler consumption of the unit. installed 31 = signaling of season plant I/Not 0 = input not assigned DO5N‐DO5 terminals appearing 22 = auxiliary electric heater of the plant It is necessary to use an if the KA 24 = alarm external relay in order to Kit is 26 = auxiliary electric heater of sanitary reduce the total power factory 29 = boiler consumption of the unit. installed 31 = signalization of season plant For the correct connection 0 = input not assigned to NC1, N1, NO1 terminals 6 = sanitary water 3‐way valve see paragraphs 22.8.1 and 22 = auxiliary electric heater of the plant 22.8.2. I 24 = alarm It is necessary to use an 26 = Sanitary auxiliary electric heater external relay in order to 29 = boiler reduce the total power consumption of the unit. For the correct connection 0 = input not assigned to NC1, N1, NO1 terminals 22 = auxiliary electric heater of the plant see paragraphs 22.8.1 and 24 = alarm 22.8.2. I 25 = 3‐way vale for radiant panels It is necessary to use an 26 = Sanitary auxiliary electric heater external relay in order to 29 = boiler reduce the total power consumption of the unit. 0 = disabled function I 1 = enabled function In case of several minichillers in cascade you I have to assign different addresses to each control. 0 = selection menu appears on CRH 1 = classic mode I 2 = dual cooling setpoint 3 = dual heating setpoint 4 = dual cooling and heating setpoint 0 = disabled function I 1 = In heating always diverts towards the sanitary I 32
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans A16 Low pressure setting in cooling mode Bar 5,0 4,0÷80,0 I In case of doubt about the setting value please contact us b01 Band in cooling mode °C 1,0 0÷10,0 I In case of doubt about the setting value please contact us b02 Band in heatingmode °C 1,0 0÷10,0 I In case of doubt about the setting value please contact us b03 Band in sanitary mode °C 1,0 0÷10,0 I In case of doubt about the setting value please contact us b04 b06 Commutation time valve radiant panels Sanitary transitori output in heating sec sec 30 45 0÷600 0÷255 I I b08 Enabling dynamic offse t / 0 0÷1 I b09 Cooling maximum offset °C 3.0 b10 Heating maximum offset °C ‐3.0 b11 Outdoor air setpoint in cooling operation
°C 25 b12 Outdoor air setpoint in heating operation
°C 15 b13 Temperature differential in cooling °C ‐10.0 b14 Temperature differential in heating °C 10.0 / / b15 b20 F08 Setting of the presure at the minimum fan speed in cooling mode Bar F09 Proportional band for fan motor modulation in cooling mode Bar F10 Delta cut‐off fan Bar F11 Hysteresis cut‐off Bar F12 bypass cut‐off time Sec. F14 Setting of the presure at the maximum fan speed in cooling mode Bar F17 Setting of the presure at the minimum fan speed in heating mode Bar F18 Proportional band for fan motor modulation in heating mode Bar F20 Setting of the presure at the maximum fan speed in heating mode Bar P03 Heat pump operation mode / I I ‐127÷127 ‐
50.0÷80.0
‐
50.0÷80.0
I I I 5.0 0.0÷10.0 I 0 0÷1 I 0 = 0‐10V input 1 = Ratiometric input ‐
50.0÷80.0
I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us ‐
50.0÷80.0
I In case of doubt about the setting value please contact us ‐
50.0÷80.0
I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us ‐
50.0÷80.0
I In case of doubt about the setting value please contact us 0÷1 I 0 = continous operation 1 = thermoregulation operation Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit 1 Adjustment of the pump in antigel °C 5 ‐15÷15 I P05 Hysterisis for the pump in antigel mode °C 2.0 0÷15.0 I P07 Maximum speed of modulating pump % 0÷100 I 0÷100 I Minimum speed of modulating pump % I P04 P08 33
Set‐point regulation band by analog input 0‐10V Enabling of the inputs 0‐10V/ratiometric ‐
50.0÷80.0
‐
50.0÷80.0
‐127÷127 0 = disabled function 1 = enabled function Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Based on the model of the unit Based on the model of the unit P09 Set Delta T[°C] T inlet water/outlet of modulating pump °C 5 0÷15 I P10 Delta T[°C] modulating pump °C 5.0 0÷15.0 I P16 Time between 2 actuations of the pump in periodical mode min 0 0÷600 I Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit. Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit. Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit. Lower values than those of default÷100 (In case of any doubt on the default compromise the default value, please contact us) optimal operation of unit Lower values than those of default÷100 (In case of any doubt on the default compromise the default value, please contact us) optimal operation of unit.
Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans P17 r02 r03 r06 r08 r10 r11 r12 r14 r15 r16 r20 r21 r22 Operating time of the pump in periodical mode Set point of anti‐freeze heater in heating mode Set point of anti‐freeze heater in cooling mode Anti‐freeze electric heaterdifferential Upper limit during in susbstitution operation Enabling the auxiliary electric heater of the plant auxiliary electric heater differential of the plant Delay on activation of the auxiliary electric heater of the plant Exclusive heaters operation Enabling of auxiliary electric heaters of sanitary mode Delay on activation of the auxiliary electric heaters of sanitary mode Priority on use of heaters Enabling the mitigation to plant side with heaters in defrost Set for the joint operation of auxiliary electric heaters‐compressor sec 0 0÷255 I 0 = periodical mode is disabled °C 4 3÷6 I °C 4 3÷6 I °C 2,0 0,0÷25,5 °C ‐16 ‐16÷50 / 0 °C I I Respect the condition r22 ≥ r28 ≥ r08 0÷1 I 0 = disabiled function 1 = enabled function 0,0 0,0÷25,5 I min 0 0÷255 I / 0 0÷1 I / 0 0÷1 I / 15 0÷255 I / 1 0÷1 I 0 = priority for plant side 1 = priority for sanitary side The setting of this parameter is required only if r14 = 1. / 0 0÷1 I 0 = disabled function 1 = enabled function / 7 ‐127÷127 I 0 = heaters can be activated simultaneously 1 = heaters can be activated exclusively 0 = disabled function 1 = enabled function r23 Types of utilization of the boiler / 6 0÷6 I r24 Types of utilization of the auxiliary electric heaters / 3 0÷3 I r25 Disinfection antilegionella setpoint °C 80 0÷100 I r26 Disinfection period min 12 0÷255 I r27 Heat pump operating mode setpoint for disinfection °C 48.0 ‐
50.0÷80.0
I °C ‐7 ‐16÷50 I 0 = boiler not used 1 = utilization of the boiler only on plant side with priority for activation of the auxiliary electric heaters 2 = utilization of the boiler only in sanitary
operation with priority for activation of the auxiliary electric heaters 3 = utilization of the boiler on both sanitary and plant sides with priority for activation of the auxiliary electric heaters 4 = utilization of the boiler only on plant side with priority for activation with respect to the auxiliary electric heaters 5 = utilization of the boiler only in sanitary
operation with priority for activation with respect to the auxiliary electric heaters 6 = utilization of the boiler on both sanitary and plant sides with priority for activation with respect to f the auxiliary electric heaters 0 = auxiliary heater is not used 1 = only the auxiliary electric heater of the plant is used 2 = only the auxiliary electric heater of sanitary side is used 3 = both auxiliary electric heaters of sanitary and plant sides are used This function is available with Hi‐T controller accessory (please refer to its manual for more details) This function is available with Hi‐T controller accessory (please refer to its manual for more details) This function is available with Hi‐T controller accessory (please refer to its manual for more details) Respect the condition r22≥ r28≥ r08 °C 0 0÷100 I °C 0 0÷100 I °C 0 0÷100 I r28 r29 r30 r31 Upper limi joint operation area II Temperature offset for set point boiler and heaters of the plant (G02) Temperature offset for second setpoint boiler and heaters of the plant and sanitary circuit (G05) Temperature offset for boiler and sanitary heaters (G03) N.B. U=user, I=installer All configurations could not be selected simultaneously. For more information please contact us or verify the table “MCF14224D58‐00 IO configurations table” which you can download from the website www.maxa.it in the ”reserved area”. 34
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 9.25.2 Table of configuration of the series V2+/V2+ with KA accessory Parameters Coo Hea San Co2 He2 Description First setpoint in cooling mode First setpoint in heating mode Sanitary Setpoint Second setpoint in cooling mode Second setpoint in heating mode Unit °C °C °C °C °C H10 Enabling of sanitary function / 0 0÷1 I H19 ST8 input configuration / 0 0÷41 I 0 = input not assigned 41 = water temperature remote sensor H20 ST9 input configuration / 0 0÷41 I 0 = input not assigned 6 = sanitary water temperature 41 = water temperature remote sensor H21 ST10 input configuration / 0 0÷41 I 0 = input not assigned 40 = 0‐10V input Range Visibility 5,0÷Co2 U He2÷55,0 U 25,0÷55,0 U Coo÷23,0 U 25,0÷Hea U H44 DI7 configuration / 26 0÷28 H45 DI8 configuration / 0 0÷40 H54 Digital input polarity / 0 0÷40 H58 H59 35
Default 7,0 45,0 48,0 18,0 35,0 DO3 configuration DO4 configuration / / 22 0 0÷32 0÷32 H60 DO5 configuration / 0 0÷32 H61 Open collector 1 configuration / 6 0÷32 H76 Remote selection of operating mode (summer/winter) / 0 0÷1 H79 Serial address / 1 1÷200 I Admitted configuration 0 = disabled function 1 = enabled function 26 = second set‐point humidistat 28 = Actuation of sanitary thermoregulation by digital input 0 = input not assigned 26 = second set‐point humidistat 28 = actuation of sanitary thermoregulation by digital input 0 = digital inputs polarity = NO 64 = polarity DI7=NC (for activation of sanitary thermoregulator by digital I input, SE‐SE terminals) 128 = polarity DI8=NC (for activation of sanitary thermoregulator by digital input, SAN‐SAN terminals) 0 = input not assigned 22 = auxiliary heater of the plant 24 = alarm I 26 = sanitary water auxiliary heater 29 = boiler 31 = signalization of plant season I/Not 0 = input not assigned appearing 22 = auxiliaries heaters of the plant if the KA 24 = alarm Kit is 26 = sanitary water auxiliary heater factory 29 = boiler installed 31 = signalization of plant season 0 = Input not assigned I/Not 22 = auxiliary heater of the plant appearing 24 = alarm if the KA 25 = 3‐way valve for radiant panels Kit is 26 = sanitary water auxiliary heater factory 29 = boiler installed 31 = signalization of plant season 0 = input not assigned 6 = sanitary water 3‐way valve 22 = integrating heater of the plant I 24 = alarm 26 = sanitary water integrating heater 29 = boiler 31 = signalization of plant season 0 = disabled function I 1 = enabled function I I H82 Enabling dual setpoint / 0 0÷4 I H83 Enabling heating always directed towards the sanitary / 0 0÷1 I A16 Low pressure setting in cooling mode Bar 5,0 4,0÷80,0 I b01 Band in cooling mode °C 1,0 0÷10,0 I 0 = selection menu appears on CRH 1 = classic mode 2 = dual cooling setpoint 3 = dual heating setpoint 4 = dual cooling and heating setpoint 0 = function disabled 1 = in heating always directed towards the sanitary Note SE‐SE terminals Available input in exclusion of D.I.7 (if you will use it, please set H44=0) SAN‐SAN terminals Available input in exclusion of D.I.8 (if you will use it, please set H45=0) 0‐10V‐0‐10V terminals SE‐SE terminals Available input in exclusion of ST8 (if you will use it, please set H19=0) SAN‐SAN terminals Available input in exclusion of ST9 (if you will use it, please set H20=0) Connect the terminals AEH‐
AEH to the coil of the contactor (NO 230Vac contact) DO4N‐DO4 terminals It is necessary to use an external relay in order to reduce the total power consumption of the unit. For the correct connection to the terminals DO5N‐D05 see Paragraphs 22.8.3. It is necessary to use an external relay in order to reduce the total power consumption of the unit. For the correct connection to NC1, N, NO1 terminals see Paragraphs 22.8.3. It is necessary to use an external relay in order to reduce the total power consumption of the unit. In case of several minichillers in cascade you have to assign different addresses to each control. Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans b08 Enabling dynamic set / 0 0÷1 I b09 b10 Cooling maximum offset Heating maximum offset °C °C 3.0 ‐3.0 ‐50.0÷80.0 ‐50.0÷80.0 I I Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit 0 = disabled function 1 = enabled function b11 Outdoor air setpoint in cooling operation
°C 25 ‐127÷127 I b02 Band in heating mode °C 1,0 0÷10,0 I b03 Band in sanitary mode °C 1,0 0÷10,0 I b04 b06 Commutation time valve radiant panels Sanitary transitory output in heating sec sec 30 45 0÷600 0÷255 I I b12 b13 b14 b15 b20 Outdoor air setpoint in heating operation Temperature differential in cooling Temperature differential in heating Set‐point regulation band by analog input 0‐10V To enable the inputs 0‐10V/ratiometric °C 15 ‐127÷127 I °C ‐10.0 ‐50.0÷80.0 I °C 10.0 ‐50.0÷80.0 I / 5.0 0.0÷10.0 I / 0 0÷1 I 0 = 0‐10V input 1 = ratiometrico input F08 Setting of the pressure at the minimum fan speed in cooling mode Bar F09 Proportional band for fan motor modulation in cooling mode Bar F10 Delta cut‐off fan Bar F11 Hysterisis cut‐off Bar F12 bypass cut‐off time Sec. F14 Setting of the pressure at the maximum fan speed in cooling mode Bar F17 Setting of the presure at the minimum fan speed in heating mode Bar F18 Proportional band for fan motor modulation in heating mode Bar F20 Setting of the pressure at the maximum fan speed in heating mode Bar P03 Heat pump operation mode / Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit Based on the model of the unit 1 ‐50.0÷80.0 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us ‐50.0÷80.0 I In case of doubt about the setting value please contact us ‐50.0÷80.0 I In case of doubt about the setting value please contact us 0÷25.5 I In case of doubt about the setting value please contact us ‐50.0÷80.0 I In case of doubt about the setting value please contact us 0÷1 I 0 = continous operation 1 = thermoregulation operation Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the default one can ensure the optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit P04 Adjustment of the pump in antigel °C 5 ‐15÷15 I P05 Hysteresis for the pump in antigel mode °C 2.0 0÷15.0 I P07 Maximum speed of modulating pump % Based on the model of the unit 0÷100 I default÷100 (If there is any doubt on the default value, please contact the company) P08 Minimum speed of modulating pump % Based on the model of the unit 0÷100 I default÷100 (If there is any doubt on the default value, please contact us) P09 Set Delta T[°C] T inlet water/outlet of modulating pump °C 5 0÷15 I P10 Delta T[°C] modulating pump °C 5.0 0÷15.0 I min 0 0÷600 I sec 0 0÷255 I 0 = periodical mode is disabled °C 4 3÷6 I P16 P17 r02 r03 r06 Time between 2 actuations of the pump in periodical mode Operating time of the pump in periodical mode Set point of anti‐freeze heater in heating mode Set point of anti‐freeze heater in cooling mode Anti‐freeze electric heater differential °C 4 3÷6 I °C 2,0 0,0÷25,5 I Lower values than those of default compromise the optimal operation of unit Lower values than those of default compromise the optimal operation of unit.
Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit Different values from the In case of doubt about the setting value default one can ensure the please contact us optimal operation of unit 36
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans r08 r10 r11 r12 r14 r15 r16 r20 r21 r22 Upper limit during in substitution operation Enabling the auxiliary electric heater of the plant Auxiliary electric heater differential of the plant Delay on activation of the auxiliary electric heater of the plant Exclusive heaters operation Enabling of auxiliary electric heater of sanitary mode Delay on activation of the auxiliary heater of sanitary mode or heat pump Priority on use of heaters Enabling the mitigation to plant side with heaters in defrost Set for the joint operation of auxiliary electric heaters‐compressor °C ‐16 ‐16÷20 I Respect the condition r22 ≥ r28 ≥ r08 0 = disabled function 1 = enabled function / 0 0÷1 I °C 0,0 0,0÷25,5 I min 0 0÷255 I / 0 0÷1 I / 0 0÷2 I min 15 0÷255 I / 1 0÷1 I / 0 0÷1 I °C 7 ‐16÷20 I 0 = heaters can be activated simultaneously 1 = heaters can be activated exclusively 0 = disabile function 1 = enabled function 0 = priority for plantside 1 = priority for sanitary side 0 = disabled function 1 = enabled function The setting of this parameter is required only if r14=1. r23 Types of utilization of the boiler / 6 0÷6 I r24 Types of utilization of the auxiliary electric heaters / 3 0÷3 I r25 Disinfection antilegionella setpoint °C 80 0÷100 I r26 Disinfection time min 12 0÷255 I r27 Heat pump operating mode setpoint for disinfection °C 48.0 ‐50.0÷80.0 I °C ‐7 ‐16÷20 I 0 = boiler not used 1 = utilization of the boiler only on plant side with priority for activation of the auxiliary electric heaters 2 = utilization of the boiler only in sanitary operation with priority for activation of the auxiliary electric heaters
3 = utilization of the boiler on both sanitary and plant sides with priority for activation of the auxiliary electric heaters
4 = utilization of the boiler only on plant side with priority for activation with respect to the auxiliary electric heaters 5 = utilization of the boiler only in sanitary operation with priority for activation with respect to the auxiliary electric heaters 6 = utilization of the boiler on both sanitary and plant sides with priority for activation with respect to f the auxiliary electric heaters 0 = auxiliary heater is not used 1 = only the auxiliary electric heater of the plant is used 2 = only the auxiliary electric heater of sanitary side is used 3 = both auxiliary electric heaters of sanitary and plant sides are used This function is available with Hi‐T controller accessory (please refer to its manual for more details) This function is available with Hi‐T controller accessory (please refer to its manual for more details) This function is available with Hi‐T controller accessory (please refer to its manual for more details) Respect the condition r22≥r28≥r08 °C 0 0÷100 I °C 0 0÷100 I °C 0 0÷100 I r28 r29 r30 r31 Upper limi joint operation area II Temperature offset for set point boiler and heaters of the plant (G02) Temperature offset for second setpoint boiler and heaters of the plant and sanitary circuit (G05) Temperature offset for boiler and sanitary heaters (G03) N.B. U=user, I=installer All configurations could not be selected simultaneously. For more information please contact us or verify the table “MCF14224D58‐00 IO configurations table” which you can download from the website www.maxa.it in the ”reserved area”. 9.26 ALARMS 9.26.1 Water flow switch E06 The water side flow switch is already installed inside the unit and DOES NOT HAVE to be tampered with or by‐passed in any way. The flow switch is by‐passed for 10 seconds after the unit’s start up. The alarm signal occurs after 5 seconds of the error appearance (lack of water flow, air inside the circuit, etc.). The alarm will automatically reset itself for the first two times and it will 37
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans be deactivated after 5 seconds. If the alarm happens more than 3 times per hour, it cannot automatically reset itself and so you should manually reset the alarm. 9.26.2 High temperature E18 The alarm will be activated when the outlet water temperature sensor becomes higher than 65°C for at least 50 seconds. It turns off when the water outlet temperature decreases below 62°C. 9.26.3 Anti‐freezing E05 The alarm will be activated when the outlet water temperature sensor is less than 4°C. It turns off when the temperature becomes higher than +7°C. 9.26.4 Sensors alarm The alarm will be activated in the case of a short or open circuit of any connected and enabled sensor. The alarm will be activated also when the temperature becomes higher than the sensors’ upper limit of 100°C or less than the lower limit of ‐50°C. A temperature sensor configured as a sensor for sanitary mode, does not lead to alarm if the sanitary mode is not enabled. 9.26.5 Timeout inverter E80 Supposing the controller does not communicate with the driver board of the compressor, the time out alarm will be activated in order to prevent a system’s control loss. 9.26.6 ON/OFF remote E00 In case the unit is remote controlled by a remote digital input. 9.26.7 High pressure E01 If the on board pressure transductor detects a pressure higher than 41 bar, the alarm will be activated. In this case the compressor will stop immediately. The alarm will reset when the pressure decreases under 37 bar. If the alarm occurs more than 3 times per hour, the alarm becomes at manual reset. 9.26.8 High pressure flow switch (in series with the compressor outlet probe) E64 If the pressure switch on the machine detects a pressure higher than 44 bar the alarm will be active. In this case, the compressor will be immediately stopped. The alarm resets when the pressure drops below 31 bar. 9.26.9 Low pressure E02 If the on board pressure transductor detects a pressure lower than value set from the controller (A16=5 bar by default, 1,5 bar in heating mode) the alarm will be activated. In this case the compressor will stop immediately. The alarm will reset when the pressure goes over an hysteresis of 2,0 bar. If the alarm occurs more than 3 times per hour, the alarm becomes at manual reset. 9.27 POWER FAILURE After power supply reset: 1. The system comes back to the previous state before the power failure. 2. If the system is defrosting, this mode will be cancelled after power supply reset. 3. All the running timings will be cleared and reset again. 9.28 USER BLOCK ALLARMS TABLE Error description Off remote control Inverter hardware malfunctioning
Compressor’s tension too high Inverter heatsink temperature too high Power supply tension out of bounds Compressor not power supplied Inverter time out malfunctioning Inlet water sensor Outlet water sensor Compressor inlet sensor Compressor exhaust temp. sensor + HP flow switch
High pressure transductor Low pressure transductor Outdoor battery sensor for climate adjust Sanitary water boiler sensor (opt.)
Water flow switch High temperature High pressure Low pressure Anti‐freezing alarm Code E00
E75
E76
E77
E78
E79
E80
E61
E62
E63
E64
E65
E66
E67
E69
E06
E18
E01
E02
E05
Compressor
OFF
OFF
OFF
OFF OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Pump OFF
Electric heaters OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Fan OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
38
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 10 SHUTDOWNS FOR LONG PERIODS • Turn off the unit by placing the switch of each unit to "OFF" position. • Close the water valves. • Place the general differential circuit breaker to "OFF" position. If the temperature drops below 0°C there is serious danger of frost: add a mixture of water and glycol in the plant, otherwise drain the hydraulic circuits of the plant and of the heat pump. 11 MAINTENANCE AND PERIODICAL CONTROLS WARNING: All the operations described in this chapter HAVE TO BE CARRIED OUT BY TRAINED STAFF ONLY. Before any operation or before entering the inner components of the unit, be sure that the power supply is disconnected. The compressor’s heads and discharge piping are usually at high temperature levels. Be very careful when operating in their surroundings. Aluminium coil fins are very sharp and can cause serious wounds. Be very careful when operating in their surroundings. After maintenance operations, re‐install the cover panels, and fix them by means of screws. The refrigerant circuits must not be filled with different gas other than that indicated on the nameplate. The use of a different refrigerant can cause severe damage to the compressor. It’s forbidden to use oils other than those specified in this manual. The use of a different oil can cause serious damage to the compressor. It is a good rule to carry out periodic checks in order to verify the proper operation of the unit. OPERATION 1 month Filling the water circuit. x Presence of bubbles in the water circuit. x Check out that safety and control devices work correctly x Check out possible oil leakage from compressor. x Check out possible water leakages from the hydraulic circuit. x Check out the proper working of the flow switches. x Check out that the crankcase electric heaters are properly supplied and functioning. x Clean the metallic filters of the hydraulic circuit. x Clean the finned coil by means of compressed air or water jet. x Check out that all the terminals on the electric board as well as on the terminals of the compressor are properly fixed. Tightening of water connections. Check out the tightening and the balancing of the fan blades.
Correct voltage. Correct absorption. Check the refrigerant charge. Check the operating pressure, and superheat and subcooling
Check of the efficiency of circulation pump. Check the expansion tank. If the unit should be out of service for a long period, discharge water from the piping and from heat exchanger. This operation is necessary if, during seasonal stoppages, ambient temperature is expected to go down below the freezing point of the employed fluid. 4 month x 6 month x
x
x
x
x
x
x
x
x 11.1 ENVIRONMENTAL PROTECTION According to the norms dealing with the use of depleting stratospheric ozone substances, it is forbidden to release refrigerants fluids in the atmosphere. They have to be collected and delivered to the seller or to proper gathering points at the end of their operating life. Refrigerant R410A is mentioned among controlled substances and for this reason it has to be subjected to the mentioned norms. A particular care is recommended during service operations in order to reduce as much as possible any refrigerant loss. 12 WHEN THE UNIT GOES OUT OF SERVICE Once the unit is arrived at the end of its life cycle and needs to be removed or replaced, the following operations are recommended: • the refrigerant has to be recovered by trained people and sent to proper collecting centre; • compressors’ lubricating oil has to be collected and sent to proper collecting centre; • the frame and the various components, if not serviceable any longer, have to be dismantled and divided according to their nature, particularly copper and aluminium, which are present in conspicuous quantity in the unit. These operations allow easy material recover and recycling process, thus reducing the environmental impact. 39
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 13 TECHNICAL DATA TECHNICAL CHARACTERISTICS Dati elettrici Raffreddamento Riscaldamento Compressor Fan motor Refrigerant Hydraulic circuit Noise level Dimensions and weight Power supply Total power input Maximum starting current Maximum current input
Cooling capacity (1) Power input (1) E.E.R. (1) Cooling capacity (2) Power input (2) E.E.R. (2) Heating capacity (3) Power input (3) C.O.P. (3) Heating capacity (4) Power input (4) C.O.P. (4) Type Number Power input in cooling mode (1) Power input in cooling mode (2) Power input in heating mode (3) Power input in heating mode (4) Refrigerant oil (type, quantity) Type Number Rated power input Rated current input Speed Max. air flow Type Refrigerant quantity Design pressure (high/low) Water flow rate (4) Available head pressure (4) Rated power input of the water Max power input of the water Max. current input of the water Expansion vessel Hydraulic connections Minimum volume of water Sound pressure (5) Dimensions (L×H×W) Max. Packing dimensions (L×H×W) Operating weight Net/Gross weight Unit kW A A kW kW W/W kW kW W/W kW kW W/W kW kW W/W kW kW kW kW mL kW A r/min 3
m /s kg MPa L/s kPa kW kW A L inch L dB(A) mm mm kg kg Models N‐i‐HWAK V2/V2+ V2 09
V2+ 09
V2 12 V2+ 12 230V/1/50Hz
230V/1/50Hz 4.61
4.55
5.78 5.67 13.0
12.9
16.4 16.1 20.2
20.0
25.4 24.9 7.18
7.49
9.53 9.86 2.47
2.41
3.27 3.16 2.91 2.91
3.11
3.12 8.93
9.11
11.90 12.06 2.41
2.35
3.12 3.03 3.81 3.98 3.71
3.88
3.81 3.98 5.35
5.35
8.50
8.50
11.56 11.56 1.64
1.58
2.57
2.51
3.43 3.35 3.39 3.26
3.31
3.39
3.37 3.45 5.99
5.99
9.49
9.49
12.25 12.25 1.46
1.40
2.31
2.25
2.97 2.89 4.13 4.24 4.10
4.28
4.11
4.22
Twin Rotary DC Rotary DC Inverter 1
1
1 1,25
2,16
2,73 1,21
2,10
2,59 1,36
2,26
2,90 1,18
2,00
2,44 ESTER OIL VG74, 480
ESTER OIL VG74, FV50S, 1070 DC Brushless motor
DC Brushless DC Brushless motor 1
1
2 0.156
0.188
0.180 (×2) 0.48
0.57
0.55 (×2) 900
900
1000 1.08
1.63
2.11 R410A
R410A
R410A V2 06
V2+ 06
230V/1/50Hz
2.81
2.76
7.9
7.8
12.3
12.1
4.44
4.56
1.53
1.47
2.90
3.10
5.67
5.69
1.49
1.43
V2 15
V2+ 15
400V/3P+N+Gnd/50Hz
7.93 7.85 7.5
7.3
11.5 11.13 11.3 11.97
3.86
3.10
14.66
3.76
3.90
13.54
4.04
3.95
2.82 14.05 3.85
3.65 13.54
4.12
3.29
15.06
3.67
3.35 15.06
3.59
4.10 4.20
Scroll DC inverter 1
3,42
3,32
3,59
3,14
FV50S/1400
DC Brushless motor
2
0.180 (×2)
0.55 (×2)
1000
2.59
R410A
1.55 2.10 3.65 3.90 4.2/1.5
0.29
4.2/1.5
0.45
4.2/1.5 0.59 4.2/1.5
0.72
43 53 29 28 51 42 48 0.094
0.124
0.55
0.063
0.063
0.47
0.102
0.124
0.55
0.063
0.063
0.47
0.125 0.165 0.75 0.087 0.087 0.71 0.136
0.165
0.75
2
1”M
18
44÷50
1134x719x376 1310x850x430
73
75
69/77
71/79
2
1”M
25
45÷53
2 1”M 35 46÷54 26
0.087
0.087
0.71
2
1”M
45
46÷54
1229x861x371 1258×1402×448 1258×1402×448 1310x1000x430
92
94
87/96
89/98
1430x1546x690 147 149 140/153 142/155 1430x1546x690
152
154
145/15
147/160
Operating conditions: (1) Cooling: Outdoor air temperature 35°C; inlet/outlet water temperature 12/7°C. (2) Cooling : Outdoor air temperature 35°C; inlet/outlet water temperature 23/ 18°C. (3) Heating: Outdoor air temperature 7°C DB 6°C WB; inlet/outlet water temperature 40/45°C. (4) Heating: Outdoor air temperature 7°C DB 6°C WB; inlet/outlet temperature 30/35°C. (5) Sound pressure level measured at 1m from the unit, in free field, according to ISO 3746. N.B. The performance data are indicative and could be subject to change. In addition, the performances declared in (1), (2), (3) and (4) are to be understood referring to the instantaneous power according to EN 14511. WARNING: The minimum temperature allowed for storing the unit is 5°C. 40
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 14 ELECTRIC DATA OF THE UNIT AND AUXILIARIES Power supply of the unit Control board circuit V/~/Hz V/~/Hz 230/1/50*‐400/3/50** 12/1/50 Remote control circuit Fans power supply V/~/Hz V/~/Hz 12/1/50 230/1/50 For the models 06, 09, 12* ‐ For the model 15**. Note: Electric data may change for updating. It is therefore necessary to refer always to the technical data label sticked on right‐
side panel of the unit. 15 HEAT PUMPS AVAILABLE HEAD PRESSURE Below the characteristic curves corresponding to Head pressure ‐Water flow without head losses of the hydronic kit. The optimal operating point is shown on each curve under the specified conditions at the apex (4) p. 40. The circuit’s plant must be designed so as to ensure the nominal water flow rate corresponding to the operating points indicated below. 15.1 MODELS N‐I‐HWAK/WP V2/V2+ 06 70
60
Head pressure [kPa]
50
40
V2 06
V2+ 06
30
20
10
0
0,6
0,8
1
1,2
1,4
1,6
Water flow rate [m³/h]
15.2 MODELS N‐I‐HWAK/WP V2/V2+ 09 60
50
Head pressure [kPa]
40
30
V2 09
V2+ 09
20
10
0
1
1,2
1,4
1,6
Water flow rate [m³/h]
41
1,8
2
2,2
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 15.3 MODELS N‐I‐HWAK/WP V2/V2+ 12 70
60
Head pressure [kPa]
50
40
V2 12
V2+ 12
30
20
10
0
1,3
1,5
1,7
1,9
2,1
2,3
2,5
2,7
2,9
3,1
3,3
3,5
Water flow rate [m³/h]
15.4 MODELS N‐I‐HWAK/WP V2/V2+ 15 70
60
Head pressure [kPa]
50
40
V2 15
V2+ 15
30
20
10
0
1,6
1,8
2
2,2
2,4
2,6
2,8
3
3,2
3,4
3,6
3,8
4
4,2
Water flow rate [m³/h]
16 WATER PUMP CURVES 16.1 MODELS N‐I‐HWAK/WP V2 06‐09 42
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 16.2 MODELS N‐I‐HWAK/WP V2+ 06‐09 16.3 MODELS N‐I‐HWAK/WP V2 12‐15 16.4 MODELS N‐I‐HWAK/WP V2+ 12‐15 43
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 17 OPERATING LIMITS 17.1 EVAPORATOR WATER FLOW RATE The nominal water flow rate is referred to a ∆T equal to 5°C, between the evaporator’s inlet and outlet temperatures. The allowed maximum flow rate is corresponding to ∆T=3°C; higher values may cause too high pressure drops. The allowed minimum water flow rate is corresponding to ∆T=8°C (except for the models N‐i‐HWAK/WP V2/V2+ 06 for which a maximum temperature difference of ∆T=6,5°C is allowed). Insufficient values may cause too low evaporating temperatures with the intervention of safety devices which would stop the unit and, in some particular cases, the water can freeze in the evaporator coil causing the refrigeration circuit to break down. We enclosed below a most accurate table showing the minimum flow rates that to ensure for the plate heat exchanger for a the proper operation of unit according to the model (note: the water flow switch is used for preventing the freezing sensor from failure in the case of insufficient water flow but it does not ensure the minimum flow rate required in order the unit can work properly) V2 06 5,67 V2+ 06 5,69 N‐i‐HWAK/WP V2/V2+ V2 09 V2+ 09 V2 12 V2+ 12 8,93 9,11 11,90 12,06 Minimum water flow rate that to ensure [L/s] 0,217 0,217 0,267 Models Cooling capacity for reference [kW] 0,272 0,355 0,360 V2 15 14,36 V2+ 15 14,66 0,429 0,438 As a first approch, and in the absence of other detection systems, the proper flow rate for getting the best performance from your unit can be found at maximum speed of the circulator, using the pressure gauges for controlling the pressure difference between the return and the delivery water on the outside water connections of the unit and make sure that such value is equal or less than the static pressure indicated on the curves shown in paragraph 15 for the respectives models. 17.2 COLD WATER TEMPERATURE (SUMMER OPERATION) The allowed minimum temperature at the evaporator’s outlet is 5°C; for more lower temperatures please contact us. In this case contact our company for the feasibility study and evaluation of changes to be made according to your requests. The maximum temperature that can be maintained at the outlet of the evaporator is 25°C. Higher temperatures (up to a maximum of 40°C) can anyway be tolerated during transitions and start‐up phases of the system. In all cases, the maximum electrical input occurs for the heat pump operating mode at a water outlet temperature of 55°C and with outdoor temperature of ‐10°C. 17.3 HOT WATER TEMPERATURE (WINTER OPERATION) Once the system is working at the right temperature, the inlet hot water temperature should not to be lower than 25°C; the lowest values that are not related to transitional or start‐up stages may cause system’s malfunction and possible compressor breakdowns. The maximum outlet water temperature have not to exceed 55°C. At this temperature, the power consumption and performance in terms of C.O.P. are enhanced if the outdoor temperature is higher than 5°C, even if the unit is still able to work up to the limit of ‐15°C. For higher temperatures than those pointed out, especially if have a concomitant with the reduction of the water flow rate, it may cause abnormalities to the normal operating of the unit, or the safety devices act in critical cases. 17.4 AMBIENT AIR TEMPERATURE The units are designed and manufactured to operate, in summer operation, with the condensate control, with outdoor air temperatures ranging between ‐10°C and 46°C. While operating as a heat pump, the allowed range of the outdoor temperature goes from ‐15°C to 40°C as a function of the water outlet temperature as indicated in the below table. Operation limits Water chiller mode Ambient temperature Water outlet temperature Heat pump mode Ambient temperature Water outelt temperature Heat pump mode for sanitary hot water Ambient temperature with maximum water temperature 48°C Ambient temperature with maximum water temperature 55°C Water outelt temperature Minimum ‐10°C Maximum +46°C Minimum +5°C Massima +25°C Minimum ‐15°C Maximum +30°C Minimum +25°C Maximum +55°C Minimum ‐15°C Maximum +40°C Minimum ‐15°C Maximum +35°C Minimum +20°C Maximum +55°C 44
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 18 CORRECTION FACTORS FOR USE OF GLYCOL Glycol rate Freezing point (°C) CCF 10% ‐3,2
0,985
20% ‐7,8
0,98
30% ‐14,1
0,97
40% ‐22,3
0,965
50% ‐33,8
0,955
CCF: IPCF: WFCF: PDCF: IPCF 1
0,99
0,98
0,97
0,965
WFCF PDCF 1,02
1,08 1,05
1,12 1,10
1,22 1,14
1,25 1,2
1,33 Capacity correction factor Input power correction factor Water flow rate correction factor Pressure drops correction factor. The water flow rate and pressure drop correction factors are to be applied directly to the values given for operation without glycol. The water flow rate correction factor is calculated in order to get the same temperature’s difference that would be obtained without glycol. The pressure drops’ correction factor takes into account the different water flow rate obtained from the application of the water flow rate correction factor. 19 DIMENSIONS 19.1 MODELS N‐I‐HWAK/WP V2/V2+ 06 IN/OUT: 1”M 45
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 19.2 MODELS N‐I‐HWAK/WP V2/V2+ 09 IN/OUT: 1”M 19.3 MODELS N‐I‐HWAK/WP V2/V2+ 12‐15 IN/OUT: 1”M 46
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20 WIRING DIAGRAMS 20.1 MODELS N‐I‐HWAK/WP V2 06 ‐09 47
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20.2 MODELS N‐I‐HWAK/WP V2 12 48
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20.3 MODEL N‐I‐HWAK/WP V2 15 49
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20.4 MODELS N‐I‐HWAK/WP V2+ 06‐09 50
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20.5 MODEL N‐I‐HWAK/WP V2+ 12 51
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 20.6 MODEL N‐I‐HWAK/WP V2+ 15 52
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 21 CR REMOTE KEYBOARD (OPTIONAL ACCESSORY) The CRH remote keyboard allows you to set the operating mode of THE chiller and fan coils units connected to a RS485 network. The network can consist of up to 5 cascaded chillers and fan coils up to 70 units in 9 heating zones. The keyboard can be fitted onto the E503 built‐in wall boxes. UP: to increase the ESC: to go back to the previous menu level parameter’s value or to scroll the menu F1: to enter the menus and the submenus DOWN: to decrease the parameter’s value or to scroll the menu
F2: to select the unit and to set the parameter’s value ENTER: to enter the submenu and to confirm the parameter’s setting Note: For more informations, please see the manual of the CRH device.
21.1 CONNECTION OF THE CRH KEYBOARD TO THE MINICHILLER The connection between theCRH, the minichillers and terminal units is very simple with a twisted shielded pair cable of 2x0.5m² connected in series. 5: 6: 7: 8: 9: to connect to the reference GNDR terminal of the output terminal block of the unit; to connect to R‐ output terminal of the output terminal block of the unit; to connect to R+ output terminal of the output terminal block of the unit; to connect to 12V‐ output terminal of the output terminal block of the unit; to connect to 12V+ output terminal of the output terminal block of the unit. 22 DUAL SET‐POINT KIT (OPTIONAL ACCESSORY) 22.1 PURPOSE AND SCOPE The function of dual set‐point is consisting of introducing a second working set‐point of the plant side (in both cooling and heating modes). The field of application is mainly that of the floor cooling assisted by fan coil for dehumidification. The purpose of the application is to avoid the conditions of formation of condensation in the floor, and to ensure thermo hygrometric welfare at any case. 22.2 PARTS AND TECHNICAL CHARACTERISTICS OF THE KIT Humidistat •
•
•
•
Power supply 12‐24 Vac Internal temperature and humidity sensor trimmer for setting of an offset from ‐3°C to +3°C respecting the dew point Serial RS485 •
•
applicable on DIN rail maximum current for single pole: 10A DIN rail baseboard 53
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans Relay •
•
•
power supply 230V AC max. resistive load for single pole: 8A max. inductive load for single pole: 1,6A 22.3 FUNCTIONS OF HUMIDISTAT By reading the internal sensor of temperature and humidity, the dew point will be calculated. The temperature measured from the internal sensor to the controller will be compared with the dew point (evaluated at the last moment of tAr) added to the parameters odr and Hy: • If Tr<Tint<Tr+odr → the relay is activated for all the next tAr time. • If Tr+odr<Tint<Tr+odr+Hy → The relay is activated for the value in % of the detected on the pump. • If e Tint>Tr+odr+Hy → the relay is activated for all the nexyt tAr time. The parameters tAr, odr and Hy are set in the factory and can be changed. % Output ON time of the relay in respect of tAr Hy 100
odr 0
Dew point Dew point + odr Tint (°C/°F)
22.4 SETTING OF MINICHILLER H82 is the parameter used for adjusting the mode of dual set‐point (from maintainer menu): H82 0 1 2 3 4 Input/output settings: OPERATION Popup menu appears of selection on CRH. Classic mode Dual set‐point active in the summer Dual set‐point active in the winter Dual set‐point active in both summer and winter H44=26 for the setting of DI7 digital input (terminals SE‐SE); H62=25 (only on V2) for the setting of OC2 digital input (terminals NC2, N2, NO2); H60=25 (only on V2+) for the setting of OC2 digital input (terminals DO5N, DO5). 22.5 NOTES FOR INSTALLATION Humidistat The relay of the humidistat must be connected as NC. Two cases can be distinguished: 1. dehumidification is not required (activation of dual set‐point) when the relay is de‐energized, the water is sent to the floor plant (according to set‐point) 2. dehumidification is required (deactivation of dual set‐point): when the relay energie, the water is sent to the fan‐coils (first set point) Relay: Only for V2 models the 3‐way valve can be connected directly to the field mounted relay with changeover contact (4A resistives, 1 A inductives, 230 VAC), connecting it to the terminals NC2, N2, NO2 (if you have at your disposal a valve with 3 contacts for power 54
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans supply), or to the terminals N2‐NC2 (if you have at your disposal a valve with 2 electrical contacts for power supply and with spring return) However, it is recommended to use an external relay, included in the dual set‐point kit, to allow the connection with higher loads (up to 8A resistive, 1.6A inductive) and at the same time separate the lines of the power supply of the minichiller, 3‐way valve and fan coils (in this case it is necessary to provide appropriate protection to the power supply line of the fan coil). In this second case, the relay must be installed on board machine in the DIN bar of the user’s terminal block, connecting the power supply for V2 models to N2‐NC2 terminals, or to DO5‐DO5N terminals for the case of V2+ models (the output of DO5‐DO5N terminals will be enabled when the parameters H60 is set to 25). The 3‐way valve must be then connected to the outputs of the relay NO COM NC if it has 3 contacts for power supply, otherwise if it has 2 contacts NO‐COM in V2 series and NC‐COM in V2+ series for power supply and with spring return. Please refer to the table of the paragraph 9.24 for the configuration of the paramters while for the electrical connections, it depends on V2+ or V2 series, see the wiring diagrams in Pragraph 9.28. The 3‐way valve that can be energized in 2 or 3 contacts (not included within the kit) The 3‐way valve is applied to divert the water flow between floor plant and fan coil units. In the case of a 3‐way valve with 2 contacts for power supply (with return spring), when the 3‐way valve is not activated, the outlet of the valve that is opened must be connected to the floor plant. In the case of a 3‐way valve with 3 contacts for power supply, the way of the valve that is hydraulically connected to the floor plant must be activated as shown in the wiring diagrams presented in the paragraph 22.8. In this wiring diagrams show the direction of the water flow to divert by valve to either floor side or plant side. In these wiring diagrams, as for floor side or plant side, it’s intended on which way the valve will be diverted when it’s activated. 22.6 ADJUASTABLE SET‐POINT Set‐point type First set‐point (°C) Second set‐point (°C) Setpoint (summer/winter) Coo/Hea Co2/He2 Summer 7 (5÷18) 18 (7÷23) Winter 45 (35÷55) 35 (25÷45) Use SET button on the control panel of the machine to adjust the setpoints. The second set‐point is greater than the first set‐point in the summer and lower in winter: • in the summer: T2 ≥ T • in the winter: T2 ≤ T 22.7 COMMUTATION The commutation sequence from normal set‐point to the second setpoint: 1) change of operating set‐point 2a) in the summer: Commutation of the 3‐way valve only when the second set‐point ‐5°C is reached. 2b) in the winter: commutation of the 3‐way valve only when the second set‐point +5°C is reached. (at any case after 5 min from setpoints modification, the commutation of the valve will be carried out) The commutation sequence from second set‐point to the normal setpoint: 1) commutation of the 3‐way valve 2) modification of the operating setpoint after a lap of time equal to the required time for opening of the 3‐way valve. (default b04=30s from maintainer menu) 55
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 22.8 WIRING DIAGRAMS In these wiring diagrams, as for boiller side, plant, floor, plant or fan coil side, it’s intended on which way the valve will be diverted when it’s activated. 22.8.1 Wiring diagram of V2 models, without external relay connection 22.8.2 Wiring diagram of V2 models, with external relay connection 56
N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 22.8.3 Wiring diagram of V2+ models, with external relay connection WARNING: When using a 3‐way valve for dual setpoint, if the valve has 3 contacts for the power supply and in the case of external relay connection, the valve will also remain energized when the minichiller is in OFF state or when is turned off by the internal switch. For safety reasons we strongly recommend to turn OFF the external breaker of the electrical power when the unit should be maintened. 22.9 HUMIDISTAT CONNECTION Carry out the following connections between the humidistat and the terminal block of the minichiller unit: • Connect POWER SUPPLY to 12V+ and 12V‐. • Connect RELAY‐C/NC to the two terminals SE. 57
Digital input Outdoor Analogic sensor output RS485 Power supply
Serial 12‐24Vac/dc N‐i‐HWAK/WP V2/V2+ Chillers and inverter air / water heat pumps with axial fans 22.10 HYDRAULIC DIAGRAM TYPE Floor plant
3-way valve
double set poit
MSI
Minichiller
Inverter
Sanitary
3-way valve
thermoaccumulator
Aqueduct
58
Serial number