Alfamini-Alfamax Manuale Tecnico GB 6180971_00.indd

Transcription

d e l l ’ a r i a
series
Tr a t t a m e n t o
Alfamini-Alfamax
High efficiency air handling unit for wellness areas
1110- 6180971-rev.0
Air flow rates from 4.000 to 25.000 m3/h
SELECTION MANUAL
3
FAST S.p.A.
English
Index
General
4
Energy efficiency
5
Use limits
5
Description of the Alfamini/ Alfamax units
6
Accessories
8
Nominal technical data
9
Operating schemes for Alfamini - Alfamax
10
Control system
11
Simplified method for the unit selection
12
Operating limits
14
Units performance
15
Accessible plate heat exchanger (standard)
20
Hydraulic schemes for the connections
21
Dimensions
22
High efficiency air handling unit for wellness areas - Alfamini-Alfamax Series
General
In the modern wellness centers,
swimming pools or SPA, the temperature control and humidity
conditions of the environment
represent a crucial requirement for the visitors comfort.
In particular, the pool area
requires a constant balance at
any time of year; the continuing variation from dry and wet
conditions of the users requires
a perpetual and effective monitoring of both air temperature
(max. 2-3°C higher than water
temperature) and relative
humidity.
With too high humidity values,
breathing is actually inhibited
while too low values can worsen the cold feeling as the skin
evaporation is accelerated.
The particular wellness needs
(high temperatures and constant relative humidity control), the need to maintain certain temperatures in the pool
reintegrating hygienic requirements for a portion daily (usually at least 5% of the volume
of the tank every day), the
great demand for hot water for
sanitary use, the considerable
Selection manual
air flow requirements and the control of sensitive and latent loads to
keep as low as possible the thermal differential between input and
environment are all aspects that
have a strong incentive for the
designer to research plant types
best suited to reduce energy consumptions.
GIVEN THE PECULIARITY OF THE
E N V I R O N M E N T S T H AT C A N B E
SERVED BY ALFAMINI AND ALFAMAX
UNITS, THIS MANUAL IS ONLY
INTENDED TO PROVIDE PRODUCT
INFORMATION AND INDICATIONS FOR
THE CHOICE OF UNITS.
SPECIAL REQUIREMENTS NEED A
BESPOKE STUDY: IN THIS CASE
PLEASE CONTACT THE TECHNICAL
-COMMERCIAL FAST DEPARTMENT.
To meet the demands of the before
described environments FAST SpA
offers the AlfaMini (5 sizes with
nominal flow rates from 2.500 to
13.000 m³/h) and Alfamax units (3
sizes with nominal flow rates from
16.000 to 25.000 m³/h).
4
The main unit function, which is
a “plug and play” machine, is to
dehumidify while providing control
of wellness conditions of the environment.
The unit combines a heat pump, a
system of sensible and latent heat
recovery from humid air expelled
from premises and a “free” heating
system of the water pool making
it optimized for the reduction of
energy consumption.
The structure and all internal components are designed for maximum
corrosion resistance.
GB
Energy efficiency
Facilities where the units of the
Alfamini and Alfamax series find appilcation (swimming center, wellness
area, etc..) are characterized by a
very high energy consumption. The
air handling units should therefore be
optimized for the least possible impact
in the energy balance of the system.
The technical solutions adopted by the units are able to reduce
the energy consumption through:
- Use of efficient energy recovery
from the exhaust air. The recovery
system consists of a single (for the
Alfamini series) or double (for Alfamax)
plate cross-flow heat recovery unit;
- Use of a heat pump with energy recovery function from the
exhaust air and energy integration into the supply air flow.
The cooling system operates with
refrigerant R410A: the TEWI Index
(Total Equivalent Warming Impact),
which represents the parameter related to emissions of refrigerant during
the life cycle of the units and those
due to the CO2 emissions for energy
production, is lower than all other
types of refrigerant currently available.
The circuit is equipped with an electronic expansion valve, which unlike
the conventional thermal expansion valve, it allows to optimize the
operation of the compressor thereby
reducing the electricity consumption.
- Use of high efficiency plug-fans
equipped with electric motors with
efficiency class EFF1.
The direct coupling between fan
and motor allows for the reducing
of losses due to transmission (beltpulley).
These power losses can reach up to
20% of the absorbed power of the
fan shaft;
- Use of inverter devices for the electric
motors speed control of the “plug fans”;
A logic control with automatic handling of operation cycles, so made
to reduces the energy consumption.
Operating limits
The rooms in which the Alfamini and
Alfamax units operate distinguish for
being particularly “aggressive”.
AIR CHARACTERISTICS :
The units are suitable to handle air from
swimming pools treated with chlorinebased disinfectants.
WATER CHARACTERISTICS :
Maximum concentration of chlorine in
water: 1.4 mg/l.
Selection manual
ANY FURTHER APPLICATION THAT
PROVIDES FOR CONCENTRATIONS
INTHE AIR OR WATER OF PARTICULAR
DISINFECTANTS
OR
OTHER
SPECIAL SUBSTANCES NEEDS A
PRELIMINARY EVALUATION BY OUR
TECHNICAL-COMMERCIAL OFFICE,
AS RESULT GUARANTEE FAILURE.
PROPERLY PROTECT THE
PLATE EXCHANGERS OF THE
REFRIGERATION CIRCUIT WITH
SUITABLE WATER FILTERS TO AVOID
CLOGGING.
AVOID DIRECT CONTACT BETWEEN
UNITS AND PURE DETERGENTS.
5
GB
Alfamini/Alfamax: components location
ALFAMINI
12
EXHAUST
8
12
10
6
5
15
2
7
11
13
9
16
4 3
SUPPLY
OUTSIDE
17
14
1
ALFAMAX
EXHAUST
12
2
10
15
SUPPLY
13
11
4 3
14
9
15
OUTSIDE
6
5
17
1
16
12
8
7
1
Compressors cabinet separate from air flow
10
Exhaust fan (no. 2 for Alfamax)
2
Evaporating heat exchange coil
11
Supply fan (no. 2 for Alfamax)
3
Condensing heat exchange coil
12
G4 plan filters (EN779)
4
Water heat exchange coil
13
F9 soft bags (EN779)
5
Recirculation damper
14
Drops separator
6
Recirculation damper for “Alfa” cycle
15
Cross flow plate heat recovery unit
7
3-way valve with modulating actuator 24V
16
Electrical panel and electronic controller
8
Fresh air damper equipped with actuator
9
Exhaust damper equipped with actuator
17
Plate heat exchanger for heat transfer to the swimming pool water
Selection manual
6
GB
Alfamini ed Alfamax descriptions
These units, in the standard executions, are constuìituted by a section which internally raggruppa the
supply/exhaust fans and filters, and
a further section equipped with
refrigerant circuit and from heat
recovery units.
Upon request panels can be made
in different materials for the sheets
and mineral wool (density 40 kg/m3
or 100 kg/m3) as insulator.
It is advisable to verify the different options with Fast technical
office to check the feasibility.
FRAME
The bearing frame is made of aluminium profiles with anodisazion
treatment which grants the necessary protection to the corrosion
due to the potentially aggressive
atmosphere.
To facilitate the internal and external cleaning and avoid the dust
build-up, the edges are rounded.
Profiles are linked each other
through nylon corners reinforced
with glass fibre.
All fixing screws are Marutex brand
to grant an exceptional resistance
to corrosion.
BASEMENT
The basement is steady for all sizes
and made in galvanised steel sheet.
CASING
The casing is made of sandwich
panels with 50 mm thick fixed to
the frame with proper blocking profiles.
This fi xing system permits uniform
pressure over the casing, providing
excellent air and water tightness
(according to the EN 1886).
Panels are made of internal surface
in pre-painted galvanized steel,
external surface in pre-painted
galvanized steel and insulation by
means of injected polyurethane
with density 42 kg/m3.
The accessible doors use selfclosing
handles.
Furthermore, all bearing elements
and the components closings and
are completely painted to guarantee the maximum resistance to corrosion.
The inferior surface of the unit is
equipped with draining panels in
pre-painted galvanized steel with
central discharge.
Selection manual
CROSS FLOW STATIC RECOVERY
The energy recovery of the exhaust
air acts through a single (for the
Alfamini series) or double (for the
Alfamax series) cross flow plate
heat recuperator air/air.
The heat recovery units are subjected to a complete paint treatment.
DAMPERS
In the standard configuration, the
unit is equipped with 4 dampers:
- a damper placed outside, on the
exhaust air flow;
- a damper placed outside, on the
fresh air flow;
- a recirculation damper (used to
permit the maximum speed of the
room air flow);
- a recirculation damper placed
before the heat recuperator to
make the “alfa cycle”.
All dampers are made of anodized
alluminium and each controlled by modulating actuators 24V
(with spring return for the external
dampers).
The accurate construction allows
for the reducing of the air laeckage.
FAN SECTION
Fans sections are epoxy painted
resistant to corrosion, equipped
with “plug fans” with wheels with
high performance backward-curved
blades. Electric motors with effi
ciency class EFF1 driven to the
wheel, to be controlled by inverter
7
(standard).
FILTERS
Panel filters are included on the
exhaust (efficiency class G4 in compliance with EN779) and panel +
bag filters on the supply (efficiency
class G4 + F9 in compliance with
EN779) which allow to respect the
norms currently in force referring
to room air quality. A differential
flow switch for the clogging filters
is supplied on the supply/exhaust
as standard.
REFRIGERANT CIRCUIT
It is equipped with scroll compressor with rubber anti-vibration
dampers, exchange coils refrigerant gas/air with copper pipes and
painted aluminium fins and frame,
filtration devices, electronic expansion valve, liquid receiver, drier fi
lter, control (pressure transducers
and lights) and protection (high and
low pressure switches), connections
in brazed copper, ecologic refrigerant R410A.
The cooling circuit is inserted in a
compartment isolated from the air
flow to facilitate the control and
maintenance operations.
WATER HEATING COIL
Coil is completely painted to grant
the highest resistance to corrosion. The coil is standard equipped
with a 3-way valve with 24V modulating actuators.
COMPLETE CONTROL BOARD
It is installed inside the unit.
Electrical installation for the connections of power and signal,
installation pipe with cable-fixing
clamp and sleeve accessories, and
protection class IP44.
GB
MICROPROCESSOR CONTROL AND
REGULATION
The unit has a microprocessor control system, able to handle the different operating modes, providing
maximum energy efficiency in all
conditions. The RS485 interface
card is supplied standard (MODBUS
protocol) to be used for connection to the supervision systems and
remote control.
The electronic control, according to the variable opening of the
dampers and their combination,
acts in the following mode:
- Automatic management of the
operation mode both for handling
and functions;
- Dehumidification with external
air;
- Energy recovery with the help of
the cooling system;
- Automatic switching of the ALFA
cycle (particular cycle in which the
cooling system participates in the
dehumidification of the air to be
treated);
- Management of the signal to activate or not the heat exchanger for
the pool water heating through a
thermostat (not provided);
The operating cycles are shown
and well-documented in the properly section.
The hydraulic circuit between the
two plate exchangers has to be
completed with the necessary
components (pump, water filter,
expansion valve, valves, etc.) to
installers charge.
HEAT EXCHANGE SYSTEM TO
REHEAT THE POOL WATER
Heat exchange system to free
reheat the swimming pool water
composed by a double plate condenser.
One of the exchangers is installed
in the cooling circuit of the unit
inside the machine: the heat
exchange takes place between
the refrigerant and not aggressive
water. The second one is for the
swimming pool water, with possibility of inspection, in stainless
steel AISI 316L and is supplied
loose.
Accessories
PROTECTION ROOF
Built as standard in pre-painted
sheet. It is a compulsory accessory if the Alfamini / Alfamax unit
should be installed outside.
REMOTE PANEL
The remote panel allows to manage all functions of the unit control system. The remote control
panel is supplied without cable
connection between it and the
board (we recommend using a
Belden 3105A).
Selection manual
The maximum permitted length of
the cable is 50m. For lengths over
50m, please contact the FAST technical sales office.
SINGLE HEAT EXCHANGER TO
REHEAT THE POOL WATER
This is a heat exchanger using
refrigerant and water pool. The
exchanger is used as a replacement
of the double-plate heat exchanger.
8
For further technical information
about this exchanger please contact the FAST technical sales.
F U RT H E R A C C E S S O R I E S A R E
AVAILABLE UPON REQUEST.
GB
Nominal technical data
The technical data described in the following table are referred to a particular operating cycle (cycle with external air dehumidification) and are not representative of all operating conditions which automatically the electronic regulation of the
unit is able to adapt to the halls requirements.
Alfamini - Alfamax
025 040 060 100 130 160 200 250
m³/h
2500
4000
6300
10000
13000
16000
20000
25000
Static available pressure (supply/exhaust)
Pa
400
400
400
400
400
400
400
400
Recuperators recovered capacity
kW
7,9
12,6
20,4
32,0
41,5
59,6
68,6
89,2
Max. air flow (supply/exhaust)
1
%
80,8
79,3
80,1
79,5
79,4
93,0
86,0
89,0
Recovered capacity of the refrigerant circuit 1
(heating capacity of the condensing coil)
kW
7,5
10,5
21,3
31,7
45,7
46,3
53,6
69,4
Total recovered capacity 1
kW
15,4
23,1
41,6
63,7
87,3
105,9
122,2
158,6
kW
1,3
1,6
3,7
6,0
8,4
8,5
9,2
12,8
-
11,8
14,4
11,2
10,6
10,4
12,5
13,3
12,4
Max. recuperators efficiency
1
Compressors absorbed capacity
1
COP
1
kg/h
15,5
25,2
40,1
63,7
82,7
102,2
127,6
159,5
Shaft power of the supply fan
kW
1 x 1,2
1 x 2,1
1 x 3,1
1 x 5,1
1 x 6,5
2 x 4,6
2 x 6,0
2 x 7,8
Shaft power of the exhaust fan
kW
1 x 0,9
1 x 1,5
1 x 2,2
1 x 3,8
1 x 4,8
2 x 3,5
2 x 4,2
2 x 5,3
Type / compressors no.
n°
Total dehumidification capacity
1
Scroll / 1
Water heating coil (standard)
Max. capacity (without active recovery) 1
kW
26,1
35,4
61,6
95,3
124,5
131,9
182,7
205,9
Water flow
l/h
2250
3050
5300
8200
10700
11300
15700
17700
kPa
22
38
26
30
30
36
23
29
2
Pressure drops on water side
2
Plate exchanger R410A / not aggressive water
Nominale water flow 3
l/h
950
1120
2500
3600
5400
5760
6450
8260
Pressure drops
kPa
19
19
31
32
33
33
33
33
3
Accessible plate exchanger with not aggressive water / pool water (standard)
Pools nominal water flow
4
Pressure drops on pools side
4, 5
Pressure drops on intermediate circuit side
4
l/h
1200
1400
3100
4500
6800
7200
8100
10400
kPa
32,4
34,0
31,4
33
34,5
34,2
34,7
34,2
kPa
21,2
22,3
20,3
21,6
22,5
22,3
22,7
22,2
Electrical data *
Power supply
400 V - 3 ph - 50 Hz
Max. total absorbed current of the supply fan
A
3,5
6,2
11,0
14,6
15,0
29,2
41
42
Max. total absorbed current of the
exhaust fan
A
2,6
4,9
6,4
11,3
11,3
22,0
22,6
30
Max. absorbed current
A
11,6
17,1
32,4
49,3
61,3
86,2
99,6
123
Starting current
A
32,1
46,1
91,4
181,9
184,3
209,0
223,0
287,0
Height
mm
1765
1765
2245
2405
2405
2085
2405
2405
Width
mm
895
895
1055
1375
1695
2015
2175
2335
Lenght
mm
3230
3390
4190
4510
4670
5790
5790
6430
Weight
kg
900
1000
1350
2060
2600
2780
3250
3580
Dimensions and weights
Note:
1
2
3
4
5
*
External air 0°C, R.H. 80%; internal air 29°C, R.H 60%.
Water temperature inlet/outlet 70/60°C; pressure drops on water side complete with 3-way valve.
Not aggressive water temperature inlet/outlet 27/37°C.
Water temperature inlet/outlet of the refrigerant circuit 37/27°C; pools water temperature inlet/outlet 25/35°C.
Pressure drops do not include the 3-way valve.
Please refer to the wiring diagram inside the unit.
TECHNICAL DATA ARE SUBJECT OF POTENTIAL CHANGES.
Selection manual
9
GB
Operation schemes Alfamini-Alfamax
Here under are the schemes of the
main operating modes of the unit
(schemes are referred to the Alfamax unit, the operation modes
of the Alfamini units are the same
as Alfamax units). In the following
schemes please consider that the
hot water coil is always operating,
as it must refer to external air temperatures lower than 10°C with re-
quired supply temperature which
has to balance the heat loss of the
building.
Cycle “start-up”
External air
Exhaust
From the top
Supply
5
Cycle “dehumidifying”
Dehumidification with external air
Exhaust
From the top
6
Supply
5
External air
2
1
4 3
This operating mode aims at reducing to zero the external air capacity.
The total air fl ow is recirculated through the damper
n° 5 and re-introduced in the swimming pool.
The water reheating coil is operating.
The “operating” cycle is activated for the necessary
time to reheat the room.
This operating mode aims at dehumidifying the room
with the external air, by balancing the poof rain evaporation. The cooling circuit (composed of compressor n.1
and coils n. 2 and 3) allows to recover the sensible and
latent heat of the exhaust air, and transfer it to the inlet
air or water by means of the heat exchange system composed of the double exchanger on the water side.
The hot water coil n. 4 integrates, if necessary, the heating capacity supplied by the cooling circuit, housed on
the inlet air fl ow (condensing coil n.3).
Dehumidification with outside air and alpha cycle
Exhaust
From the top
6
Supply
5
External air
2
1
4 3
If convenient, the compressor also contributes to the
swimming pool dehumidifying.
The fresh air fl ow rate is modulated by the fans inverters to reach the required wellness conditions.
According to the external ambience temperature the
unit adjusts the operation in order to reach the best
energy savings.
Dehumidification with outside air (night cycle)
Exhaust
From the top
Supply
4 3
Selection manual
6
5
External air
2
During the night operation the unit adjusts the function settings to adapt to the evaporating variations
of the pool and reduce the consumptions at minimum.
1
10
GB
Cycle with heat transfer to water
If the air temperature conditions in the ambience are satisfi ed, the heat so rejecked by the cooling circuit will be
given to the swimming pool water, by means to a double plate exchanger (standard).
A plate exchanger is an essential part of the cooling circuit of the unit (exchanger R410A/water of intermediate circuit, in the following fi gure indicated with n. 1). A further inspectionable exchanger (operating with recirculation
water of the intermediate circuit/ swimming pool water, in the following fi gure indicated with n. 2) is supplied
together with the unit. The heat system thus constituted is of very easy maintenance.
The components and the connections among the exchangers are responsibility of the client.
1
2
The scheme is indicative. For simplicity, all the components needed to complete the water circuit are not shown.
Control system
The control system of Alfamini/
Alfamax units is equipped with a
16-bit microprocessor with flash
technology and software specifically designed for the control of all
functions.
The set information, alarms, timing settings and all parameters
are displayed on a multi-function
control panel with graphic display
inside the cabinet.
The control system automatically
provides:
to implement the cheaper operating cycle and more suited to the
room needs;
to make the minimum air renewal
required by law in force;
to manage the initial stages of the
heating up system;
to implement a reduced function
cycle when possible;
to switch from air heating operation to water heating operation.
Remote panel inside the electrical
panel (standard).
For further information please
refer to the control specific manual.
Selection manual
11
GB
Simplified method for units selection
Table 1 - SPECIFIC EVAPORATION OF THE POOL HALL (g/h for m2 of water surface)
Hall temper.
(°C)
25
Internal room conditions
Relative
humidity (%)
50
60
26
70
50
27
60
70
50
60
Temperature
d.b. (°C)
26
28
70
50
60
29
70
50
30
31
60
70
50
60
70
50
60
70
295
246
379
330
281
417
368
319
g/h for m2 of water surface
218
169
120
247
198
149
277
228
179
309
261
212
343
27
203
151
99
232
180
128
262
211
159
295
243
191
328
277
225
364
313
261
402
351
298
28
188
133
77
216
161
106
247
192
136
279
224
169
313
258
203
349
294
239
387
332
276
200
142
83
29
28
230
172
113
263
204
145
297
238
179
333
274
215
370
312
253
213
151
89
245
183
121
279
217
155
315
253
191
353
291
229
227
161
95
261
195
129
297
231
165
335
269
203
242
172
102
31
32
33
Table 2 - POOL USE
278
208
138
316
246
176
258
184
109
296
222
147
Table 3 - ACTIVITY COEFFICIENT
Pool use
Use factor
Internal activity
g/h each person
Residential
0,5
A- Seated at rest
50
Fitness club
0,65
B- Seated very light work
80
Therapy/Elderly Swim
0,65
C- Seated, light work
110
Hotel
0,8
D- Walking, standing
130
Institutional/schools
0,8
E- Moderate dancing
280
Public pools
1,0
F- Walking briskly with loads
330
SPAs and whirlpools
Contact FAST
G- Light exercise
450
H- Medium atletic activity
500
I- Athletics
560
25°C-50UR%
25°C-60UR%
15
25°C-70UR%
10
5
0
-10
0
10
20
30
External temperature index
Selection manual
12
Internal room conditions:
20
27°C-50UR%
27°C-60UR%
15
27°C-70UR%
10
a
20
g/h taken outacwater
of
qua aspfor
ortamc/h
ti
external air 3inlet
/h di aria
cqua aspfor
ortamc/h
ti
g/h taken outawater
of
external air inlet
3/h di aria esterna
DEHUMIDIFYING POWER OF THE EXTERNAL AIR (g/h for mc/h of external inlet air flow in the room)
5
0
-10
0
10
20
30
GB
29°C-50UR%
20
29°C-60UR%
15
29°C-70UR%
10
5
0
25
31°C-50UR%
20
31°C-60UR%
31°C-70UR%
15
10
5
0
-10
g/h taken out
cquwater
a asporfor
tatimc/h of
external air inlet
/h di aria
g/h taken q
out
ua water
asportafor
ti mc/h of
external air
h diinlet
aria
g/h taken out
of
acquwater
a aspofor
rtatmc/h
i
external air/hinlet
d i a r ia
0
10
20
30
30
33°C-50UR%
25
33°C-60UR%
20
33°C-70UR%
-10
0
10
20
30
IMPORTANT COMMENT:
The Alfamini-Alfamax units, in the execution described
in this technical manual, are not able to cool the room,
therefore in these diagrams the allowed temperature
index is equal or inferior to the internal room temperature.
15
10
5
0
-10
0
10
20
30
The use of tables and diagrams before described, allow to get the required air flow (and therefore to the Alfamini/Alfamax
size) necessary for the room dehumidification function. It is a simplified selection method: for further information please
contact our technuical/sales department.
It will be introduced now the external index temperature which represent the different temperature/humidity combinations of the external air reported in the following table:
EXTERNAL TEMPERAT. INDEX
-10
-5
0
5
10
15
20
25
26
27
28
29
30
31
32
33
External temp. d.b. (°C)
-10
-5
0
5
10
15
20
25
26
27
28
29
30
31
32
33
External relative humidity (%)
90
85
80
75
70
65
60
55
54
53
52
51
50
49
48
47
Selection example:
1- Given for example a tank with a surface of 100 m2;
2- Assuming that the water temperature is equal to 27 °C; the indoor air conditions are equal to 29 °C, 60% RH.
With these first data from table 1, we can define that the evaporation is equal to 172 g / hour per square meter of water
surface.
3- Supposing that swimming pool is used for residential purposes. The use factor, derivable from table 2, is equal to 0,5.
Therefore the total humidity generated from water surface (g/h) is given from (tank surface x specific evaporation x use
factor):
100 m2 x 172 g/h m2 x 0,5 = 8.600 g/h
4- Assuming now that inside the hall are 17 people doing “light exercise”. From table 3 we can define that generated
Selection manual
13
GB
humidity is equal to 450 g/h each person.
Therefore, the total generated humidity (g/h) is given by (number of persons x specific evaporation):
17 persons x 450 g/h person = 7.650 g/h
The total humidity is obtained from the sum of the humidity produced by the evaporation of the water surface with that
generated by people:
8.600 g/h + 7.650 g/h = 16.250 g/h = 16,25 kg/h
5- Now considering, for example, an outdoor temperature index (which represents the project condition/ operating limit
for the Alfamini/Alfamax selected units) equal to 26 (i.e. outside air at a temperature of 26 °C with 54% RH) and temperature/ humidity temperature inside the room of 29 °C with 60% RH: from graphs we obtain an eliminated humidity value of
4.1 g/h for m/h of fresh air into the hall.
6- The outside air flow required to compensate the evaporation produced by the water surface and people is obtained from
the ratio between total humidity and the dehumidifying power of the external air:
16.250 g/h : 4,1 g/h mc/h = 3.960 mc/h
Therefore from the table of nominal technical data, the selected unit according to the flow appears to be the Alfamini 040
with a nominal air flow of 4,000 cubic meters/h.
____________________
According to the difference between the external temperature index and the room internal conditions, the size of the
selected unit can vary a lot. Considering in the same example above that the external index now is 20 and not 26, from
graph we can get the value of humidity removed is 7 g/h for m/h of fresh air into the room. And therefore the external air
flow is:
16.250 g/h : 7 g/h mc/h = 2.320 mc/h
From the table of the nominal technical data the unit to be selected is therefore the Alfamini 025 with nominal air flow di
2.500 mc/h.
Operating limits
Referring to the before example
(external temperature index equal
to 26), the side graph represents the
indicative trend and not binding:
- of the external air inlet in the room
(continuous line) in relation to the
total air derived from the unit;
- of the internal room humidity deriving from unit operation (dotted line).
Selection manual
Indicative trend of the external air flow
Indicative trend of the internal humidity
100
External air flow [%]
Internal relative humidity [%]
The external temperature index, per
il quale the Alfamini-Alfamax unit has
been selected, represents the operating limit (referred to the external conditions) over that the unit is not able
to keep the humidity control in the
room. Beyond this limit, if the internal vapore production is constant, the
relative controlled humidity will deviate towards higher values.
% Portata Nuova
90
Portata Nominale di 6800
Um Rel Locale UR_1-11
80
70
60
50
40
30
Temperatura Esterna
20
-5
0
5
10
15
20
25
30
35
14
GB
Unit performances
The performances of the unit which
can be obtained from the tables are
the following:
- eliminated room humidity
- recuperators performance (efficiency
and recovered power)
- refrigerant circuit performance
(heating capacity of the condensing
coil and compressors absorbed power)
- performance of the hot water coil
(heating capacity, water flow and pressure drops on water side).
The heating capacities of the water
coils are referred to the refrigerant
circuit not operating (max. capacity).
Unit performances refer to the conditions reported in the A table.
Table A - GENERAL COUNT CONDITIONS OF THE PERFORMANCES
Room relative
humidity
(%)
Room temperature
(°C)
29
External
temperature index
External
temperature (°C)
External relative
humidity
(%)
External air flow
compared to the
total air flow (%)
-10
-10
90
38
-5
-5
85
40
0
0
80
43
5
5
75
48
10
10
70
55
15
15
65
66
20
20
60
85
25
25
55
100
60
Water IN-OUT: 70-60 °C
Pressure drops
on water side (kPa)
Water flow (l/h)
Max. heating capacity
of the water coil (kW)
Pressure drops
on water side (kPa)
Water flow (l/h)
of the water coil(kW)
Recovered capacity
from compressor (kW)
Heating capacity of the
condensing coil (kW)
Recovered capacity
from
recuperator (kW)
Recuperators efficiency
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
ALFAMINI 025 PERFORMANCES
-10
15,5
80,8
10,2
6,7
1,2
26,1
2250
22
14
2400
27
-5
15,5
79,4
9,0
7,1
1,3
26,1
2250
22
14
2400
27
0
15,5
76,9
7,9
7,5
1,3
26,1
2250
22
14
2400
27
15,5
74,6
7,0
8,1
1,3
26,1
2250
22
14
2400
27
15,5
70,8
6,0
8,6
1,3
26,1
2250
22
14
2400
27
15
15,5
65,7
4,9
9,2
1,4
26,1
2250
22
14
2400
27
20
15,5
61,2
3,9
9,8
1,5
26,1
2250
22
14
2400
27
25
14,5
60,6
2,0
-
-
26,1
2250
22
14
2400
27
5
10
2500
Selection manual
15
GB
Pressure drops
on water side (kPa)
Water flow (l/h)
-10
25,2
79,3
16,3
9,5
1,6
35,4
3050
38
19
3370
47
-5
25,2
77,9
14,3
9,9
1,6
35,4
3050
38
19
3370
47
0
25,2
75,8
12,6
10,5
1,6
35,4
3050
38
19
3370
47
25,2
72,8
11,0
11,0
1,6
35,4
3050
38
19
3370
47
25,2
68,9
9,5
11,6
1,6
35,4
3050
38
19
3370
47
15
25,2
63,9
7,8
12,1
1,6
35,4
3050
38
19
3370
47
20
25,2
59,6
6,1
12,6
1,6
35,4
3050
38
19
3370
47
25
23,6
59,0
3,2
-
-
35,4
3050
38
19
3370
47
Pressure drops
on water side (kPa)
Pressure drops
on water side (kPa)
Water flow (l/h)
Recovered capacity
Recovered capacity
from
recuperator (kW)
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
5
10
4000
Pressure drops
on water side (kPa)
Water flow (l/h)
Water flow (l/h)
Recovered capacity
Recovered capacity
from
recuperator (kW)
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
water IN-OUT: 50-45 °C
-10
39,9
80,3
25,5
19,0
3,6
61,6
5300
26
34
5800
32
-5
39,9
78,6
23,1
20,1
3,7
61,6
5300
26
34
5800
32
0
39,9
76,8
20,7
21,4
3,7
61,6
5300
26
34
5800
32
39,9
73,6
18,2
22,8
3,8
61,6
5300
26
34
5800
32
39,9
70,2
15,7
24,2
3,8
61,6
5300
26
34
5800
32
15
39,9
65,3
12,9
25,8
3,9
61,6
5300
26
34
5800
32
20
39,9
60,2
10,0
27,5
4,0
61,6
5300
26
34
5800
32
25
37,3
59,2
5,0
-
-
61,6
5300
26
34
5800
32
5
10
6.300
Selection manual
16
GB
Pressure drops
on water side (kPa)
Water flow (l/h)
-10
63,7
79,5
41,2
28,3
5,7
95,3
8200
30
52
9000
37
-5
63,7
77,7
36,1
29,9
5,8
95,3
8200
30
52
9000
37
0
63,7
76,0
32,0
31,7
6,0
95,3
8200
30
52
9000
37
63,7
72,9
27,9
33,6
6,1
95,3
8200
30
52
9000
37
63,7
69,5
24,1
35,8
6,2
95,3
8200
30
52
9000
37
15
63,7
64,6
19,9
38,1
6,3
95,3
8200
30
52
9000
37
20
63,7
59,5
15,4
40,5
6,5
95,3
8200
30
52
9000
37
25
59,6
58,4
7,8
-
-
95,3
8200
30
52
9000
37
Recovered capacity
Water flow (l/h)
Pressure drops
on water side (kPa)
Water flow (l/h)
Pressure drops
on water side (kPa)
Recovered capacity
from
recuperator (kW)
Pressure drops
on water side (kPa)
Water flow (l/h)
Recovered capacity
Recovered capacity
from
recuperator (kW)
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
5
10
10.000
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
-10
82,7
79,4
53,5
41,1
8,2
124,5
10700
30
68
11800
37
-5
82,7
78,3
47,2
43,2
8,3
124,5
10700
30
68
11800
37
0
82,7
76,0
41,5
45,7
8,4
124,5
10700
30
68
11800
37
82,7
72,8
36,2
48,7
8,6
124,5
10700
30
68
11800
37
82,7
69,4
31,3
51,7
8,7
124,5
10700
30
68
11800
37
15
82,7
64,5
25,8
55,3
8,9
124,5
10700
30
68
11800
37
20
82,7
59,4
19,9
59,1
9,2
124,5
10700
30
68
11800
37
25
77,3
58,4
10,2
-
-
124,5
10700
30
68
11800
37
5
10
13.000
Selection manual
17
GB
Pressure drops
on water side (kPa)
Water flow (l/h)
-10
102,2
92,9
77,3
40,9
8,3
131,9
11300
36
71
12300
42
-5
102,2
91,0
67,7
43,4
8,4
131,9
11300
36
71
12300
42
0
102,2
88,3
59,6
46,3
8,5
131,9
11300
36
71
12300
42
102,2
84,1
51,7
49,7
8,6
131,9
11300
36
71
12300
42
102,2
77,6
43,2
53,5
8,7
131,9
11300
36
71
12300
42
15
102,2
66,5
32,9
57,6
8,8
131,9
11300
36
71
12300
42
20
102,2
63,5
26,3
61,0
9,0
131,9
11300
36
71
12300
42
25
95,6
62,6
13,4
-
-
131,9
11300
36
71
12300
42
Recovered capacity
Water flow (l/h)
Pressure drops
on water side (kPa)
Water flow (l/h)
Pressure drops
on water side (kPa)
Recovered capacity
from
recuperator (kW)
Pressure drops
on water side (kPa)
Water flow (l/h)
Recovered capacity
Recovered capacity
from
recuperator (kW)
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
ALFAMAX 160 PERFORMANCES
5
10
16.000
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
-10
127,6
86,1
89,5
47,5
9,1
182,7
15700
23
98
16700
29
-5
127,6
84,2
78,3
50,3
9,2
182,7
15700
23
98
16700
29
0
127,6
81,3
68,6
53,6
9,2
182,7
15700
23
98
16700
29
127,6
75,9
58,8
57,2
9,3
182,7
15700
23
98
16700
29
127,6
70,4
49,0
61,1
9,3
182,7
15700
23
98
16700
29
15
127,6
60,5
37,3
65,2
9,3
182,7
15700
23
98
16700
29
20
127,6
58,8
30,4
68,8
9,5
182,7
15700
23
98
16700
29
25
119,3
57,8
15,5
-
-
182,7
15700
23
98
16700
29
5
10
20.000
Selection manual
18
GB
Pressure drops
on water side (kPa)
Water flow (l/h)
Pressure drops
on water side (kPa)
Water flow (l/h)
Recovered capacity
Recovered capacity
from
recuperator (kW)
(%)
(kg/h)
Eliminated humidity
Nominal air flow
(mc/h)
External
temperature index
-10
159,5
89,2
115,9
61,8
12,5
205,9
17700
29
110
18600
36
-5
159,5
87,4
101,5
65,3
12,7
205,9
17700
29
110
18600
36
0
159,5
84,6
89,2
69,4
12,8
205,9
17700
29
110
18600
36
159,5
79,4
81,1
75,3
12,9
205,9
17700
29
110
18600
36
159,5
75,1
69,6
77,7
12,9
205,9
17700
29
110
18600
36
15
159,5
67,1
54,6
79,1
13,0
205,9
17700
29
110
18600
36
20
159,5
61,7
43,0
79,7
13,0
205,9
17700
29
110
18600
36
25
149,1
60,4
27,8
-
-
205,9
17700
29
110
18600
36
5
10
25.000
Selection manual
19
GB
Accessible plate exchanger (standard)
The accessible plate exchanger is
supplied alongside the unit. For the
hydraulic connection and for the
R410A/water exchanger (inside unit)
please refer to the proper paragraph.
1
Technical characteristics:
Plate material: Inox steel AISI 316.
Plate material for the frame: steel,
epoxi paint.
Gaskets by nitrile joint.
0 MM
!
3 3
7
-
33
33
)3/2
)3/2
3 3
!
Alfamini
025
Alfamini
040
Alfamini
060
Alfamini
100
Alfamini
130
Alfamax
160
Alfamax
200
Alfamax
250
P (mm)
29
33
68
95
139
148
165
222
Q (mm)
175
175
350
350
350
350
350
350
W (mm)
300
300
300
300
500
500
500
500
weight (kg)
56
56
63
67
74
75
78
88
Selection manual
20
GB
Hydraulic schemes for connections
The following is an example of a connection between the water/R410A
exchanger (G in the picture, inside the
unit) and the water/accessible water
exchanger (A in the picture and supplied loose).
The lack or the not proper location
of the mentioned components could
affect the standard operation of the
unit.
N
O
F
A
D
E
G
D
ALFAMINI
B
C
Δp
L
°C
M
I
Components and indicative location
Standard components
A
Water/accessible water exchanger
(supplied loose)
G
Water/ R410A exchanger
(inside Alfamini/Alfamax units)
B
Differential flowswitch
with digital contact
I
Y filter
Digital thermostat di consenso for the heat
recovery to water
L
Automatic filling group
C
M
Filter for pools water
D
Shut-off valve
N
Chlorine system
E
Recirculation pump
O
Main heat production system
F
Expansion vessel
The thermostat (C) is used to detect
the water temperature of the intermediate circuit and activate, even
when the flow switch (B) gives its
consent, the heat transfer to water.
The set value of the thermostat is
helpful to ensure that the water
temperature at the water/R410A
exchanger inlet does not exceed 27
°C.
ALFAMAX
Below this value, the heat transfer
cycle to water is not able to activate.
The differential flow switch (B) is
used to detect the presence of water
flow in the heat exchanger (G).
The recirculation pump (E), not handled, will always be active.
The heat transfer to the water cycle
represents an alternative to the supply air heating.
If the set air conditions in the room
are satisfied and the consent to the
heat transfer to water is not active,
the compressor of the refrigerant circuit will turn off.
ATTENTION: THE CHLORINE INSTALLATION MUST BE PLACED AFTER THE EXCHANGER (A)
Selection manual
21
GB
Unit dimensions
67,5
ALFAMINI 025
760
67,5
627,5
157,5
610
1765
60
430
37,5
770
37,5
770
770
37,5
1055
3230
2175
LATO ATTACCHI E SIDE
ISPEZIONI
CONNECTIONS/INSPECTIONS
770
120
157,5
62,5
770
NB. Dimensions are subject to potentialchanges due to the natural evolution of the product and are therefore
not considered as binding.
62,5
Selection manual
22
GB
157,5
470
610
60
430
67,5
ALFAMINI 040
760
67,5
1765
770
157,5
770
770
37,5
1215
770
3390
SIDE
LATO ATTACCHI E ISPEZIONI
157,5
2175
120
62,5
700
62,5
353
Selection manual
895
Quadro elettrico
ruotante
NB. Dimensions are subject to potentialchanges due to the natural evolution of
the product and are therefore not considered as binding.
37,5
23
GB
57,5
940
1055
ALFAMINI 060
750
120
60
610
37,5
57,5
787,5
2125
1535
CONNECTIONS/INSPECTIONS SIDE
4190
2655
120
930
37,5
930
1411
24
62,5
356
Selection manual
1055
NB. Dimensions are subject to potentialchanges due to the natural evolution of
the product and are therefore not considered as binding.
1090
62,5
Quadro elettrico
ruotante
157,5
2245
30
GB
62,5
356
1240
1375
ALFAMINI 100
72,5
787,5
750
2285
120
60
770
37,5
1535
4190
SIDE
2655
120
157,5
1090
30
1090
37,5
62,5
62,5
Selection manual
1250
NB. Dimensions are subject to
potentialchanges due to the natural evolution of the product and
are therefore not considered as
binding.
25
GB
356
1560
1695
ALFAMINI 130
750
2405
2285
120
770
2015
4615
2655
54,3
1570
Selection manual
1090
2051
binding.
1090
26
GB
1880
120
2085
1965
780
160,5
ALFAMAX 160
180
940
2015
1855
SIDE
5790
3935
157,5
1890
37,5
770
1890
62,5
157,5
190
930
binding.
37.5
62,5
Selection manual
27
GB
52,5
2200
37,5
940
ALFAMAX 200
167,5
190
940
120
52,5
2175
2405
2285
1855
5790
3937
116 62,5
930
190
2175
binding.
930
157,5
62,5
Selection manual
28
2210
37,5
GB
52,5
2200
120
2405
2285
37,5
940
ALFAMAX 250
167,5
190
1100
52,5
2335
2495
3935
6430
120
62,5
1090
190
2335
binding.
930
157,5
2210
37,5
62,5
Selection manual
29
GB
NOTE
1110-6180971-rev.0
Manual printed on recycled paper.
Technical data shown in this booklet are not binding.
FAST S.p.A. shall have the right to introduce at any time whatever
modifications deemed necessary to the improvement of the
product.
FAST S.p.A. TRATTAMENTO DELL'ARIA
35044 Montagnana (PD) - Italy
Via Luppia Alberi, 170
Tel. (+39) 0429 806311 - Fax 0429 806340
E-mail: [email protected]
http://www.fastaer.com

Alfamini-Alfamax Manuale Tecnico GB 6180971_00.indd

Transcription

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