Installation, service and operating instruction Alfa Laval Midi Wall

Transcription

Installation, service and operating instruction Alfa Laval Midi Wall TA2222 DHWC
Heating and domestic hot water substation for apartment houses (10-30 apts.)
DOC-1364 Rev 18th May 2015
Alfa Laval Midi Wall
Installation, service and operating instruction
Contents
1
General .................................................................................................................................. 4
1.1
1.2
1.3
1.4
1.5
Comfort ......................................................................................................................................................4
Installation .................................................................................................................................................4
Long-term security .....................................................................................................................................4
CE-marking................................................................................................................................................4
Product overview Midi Wall .......................................................................................................................5
2
Operating instructions.......................................................................................................... 6
2.1
2.2
Operation ...................................................................................................................................................6
Safety equipment/inspection .....................................................................................................................6
3
Installation ............................................................................................................................. 7
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
Unpacking..................................................................................................................................................7
Preparation ................................................................................................................................................7
Mounting ....................................................................................................................................................7
Mounting the options .................................................................................................................................8
Adjustments and settings for start up ........................................................................................................8
Dismantlement...........................................................................................................................................9
Commissioning advice ..............................................................................................................................9
Connection overview .................................................................................................................................9
Measure sketch Midi Wall TA2222 ......................................................................................................... 10
4
Control center TAC2222 ..................................................................................................... 11
4.1
4.1.1
4.1.2
4.1.3
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.3
4.4
4.4.1
4.4.2
4.5
4.6
4.7
Flow adjustment ..................................................................................................................................... 11
Control curve ..................................................................................................................................... 11
Automatically adjusting the control curve .......................................................................................... 11
Damped outdoor temperature ........................................................................................................... 11
Time controlled operation ....................................................................................................................... 12
Control watch .................................................................................................................................... 12
Sliding night time lowering ................................................................................................................ 12
Morning heating................................................................................................................................. 12
Morning increase ............................................................................................................................... 12
Monday effect .................................................................................................................................... 13
Hot water drain ....................................................................................................................................... 13
Pump controlling ..................................................................................................................................... 13
Frost protection ................................................................................................................................. 13
Pump exercise function ..................................................................................................................... 13
Alerts ...................................................................................................................................................... 13
Voltage failure......................................................................................................................................... 13
Maintenance ........................................................................................................................................... 13
5
User instructions operator control panel TAC2222 .......................................................... 14
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
Read of temperatures ............................................................................................................................. 15
Setting the temperature .......................................................................................................................... 15
Set time program for night time decrease .............................................................................................. 16
Adjust the controller curve ...................................................................................................................... 17
Read alarm message ............................................................................................................................. 17
Set operating mode ................................................................................................................................ 17
Set time .................................................................................................................................................. 17
Return temperature limitation ................................................................................................................. 18
Parameters table .................................................................................................................................... 19
6
Troubleshooting.................................................................................................................. 20
6.1
6.2
Fault indication for TA2222 .................................................................................................................... 20
Fault codes for the Magna pump............................................................................................................ 21
7
Electrical installation .......................................................................................................... 22
7.1
7.2
7.3
General ................................................................................................................................................... 22
Installation of outdoor temperature sensor ............................................................................................. 22
Electrical circuit diagram ........................................................................................................................ 23
1
8
Schematic diagram, main components ............................................................................. 24
8.1
Option 3-point HB metering .................................................................................................................... 25
9
Pump settings and capacity ............................................................................................... 26
9.1
9.2
9.3
9.3.1
9.3.2
9.3.3
9.3.4
9.3.5
9.3.6
9.3.7
9.3.8
9.3.9
General ................................................................................................................................................... 26
DHWC pump Grundfos UPSO 15-55, capacity...................................................................................... 26
Heating circuit pump Magna 25-100, settings and capacity .................................................................. 27
Control modes ................................................................................................................................... 27
Selection of control mode .................................................................................................................. 29
Maximum or minimum curve duty ..................................................................................................... 30
Control mode setting ......................................................................................................................... 31
Set point setting................................................................................................................................. 32
Setting to maximum curve duty ......................................................................................................... 32
Setting to minimum curve duty .......................................................................................................... 33
Start/stop of pump ............................................................................................................................. 33
Resetting of error indications ............................................................................................................ 33
10
11
Service instructions ............................................................................................................ 34
Maintenance and repairs .................................................................................................... 41
11.1
11.2
11.3
11.4
11.5
11.6
11.7
Change the pumps ................................................................................................................................. 41
Change the heating actuator .................................................................................................................. 41
Change the heating valve ....................................................................................................................... 42
Change the hot water actuator ............................................................................................................... 42
Change the hot water valve .................................................................................................................... 43
Change the temperature sensor heating supply/return .......................................................................... 43
Change the outdoor temperature sensor ............................................................................................... 43
12
Options ................................................................................................................................ 44
12.1
12.2
12.3
12.4
12.5
Floor heating thermostat ........................................................................................................................ 44
3-point HB metering ............................................................................................................................... 44
Mounting floor stand ............................................................................................................................... 45
GENI module .......................................................................................................................................... 45
Balancing valve DHWC .......................................................................................................................... 46
13
Technical data and performance ....................................................................................... 48
13.1
13.2
13.3
13.4
Operation data Midi Wall 70 ................................................................................................................... 48
Operation data Midi Wall 100 ................................................................................................................. 49
Operation data Midi Wall 135 ................................................................................................................. 50
Technical data ........................................................................................................................................ 50
14
15
Declaration of conformity art 3.3 ....................................................................................... 51
Declaration of conformity Cat 1 ......................................................................................... 52
2
The installation work must be carried out by an authorized installation contractor. Before the system
is taken into operation, it must be pressure tested in accordance with relevant regulations.
The temperature and the pressure of the district heating water are very high. Only qualified
technicians are allowed to work with the district heating substation. Incorrect operation may cause
serious personal injury and result in damage to the building.
If the hot water temperature is set too high, people may be scalded. If the hot water temperature is
set too low, unwanted bacteriological growth may occur in the hot water system. This can result in
serious personal injury.
Parts of the Midi Wall may get very hot and should not be touched.
Before the substation is connected to the electrical supply, make sure that the secondary heating
system is topped up with water. Starting up the system without water will damage the circulation
pump.
The substation comes prepared with an electrical plug to be connected to the main supply. The
strain relief clips of the cable must be fitted so that there is no risk of damage. If necessary, the
plug-and-socket connection can be replaced with a permanent installation with an all-pole isolate
switch. This must be carried out by a qualified electrician.
When starting up the district heating substation: to avoid the risk of scalding, make sure that no-one
draws any hot water until the hot water temperature has been adjusted.
Start district heating circulation by first opening the valve in the district heating supply and then
return lines, in order to avoid pollutions in the system. Open up the valves slowly to avoid pressure
surges. Do the same way with the heating circuit, first open the valve for heating supply then
return.
Do not shut of the electrical supply to the operator control panel. This will damage the circulation
pump, valves, actuators etc.
The heating station should be placed in a locked space, non-accessible for unauthorized personnel.
3
1 General
Alfa Laval Midi Wall is a complete, ready-to-install heating network substation for heating and hot water. It is
designed for buildings with a primary connection to a heating network. Alfa Laval has years of experience in
heating network technology and has developed Midi Wall with well-planned pipe work and with all components
easily accessible for inspection and possible future servicing.
1.1
Comfort
Midi Wall has fully-automatic temperature control for heating and hot water. The heating is controlled in relation
to desired room temperature. The hot water is controlled and maintained at the desired temperature.
1.2
Installation
Well planned pipe work and readymade electrical wiring make installation very simple. A pre-programmed
controller and plug-and-socket connection provide further simplification, so that the substation can be started
without delay. The Midi Wall is designed for hanging on the wall.
Before installation this manual must be read.
1.3
Long-term security
All the plates and pipes in the heat exchanger are made of acid-resistant stainless steel for long life. All
components are adjusted together and undergo thorough function testing in accordance with Alfa Laval’s ISO
9001:2008 quality assurance system. For future servicing requirements, all components are easily accessible
and individually replaceable.
1.4
CE-marking
Midi Wall is CE-marked to certify that the substation conforms to international safety regulations. To maintain
the validity of the CE marking, only identical replacement parts must be used.
4
1.5
Product overview Midi Wall
Picture 1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Heat exchanger, heating
Heat exchanger, DHW
Control valve, heating
Control valve, DHW
Shutoff valve, cold water
Check valve, cold water
Filling valve
Hose
Safety valve, cold water
Shutoff valve, DHWC
Pump, DHWC
Non return valve, DHWC
Shutoff valve , DHW
Strainer, primary in
Dummy, heat meter
Shutoff valve, heating return
Strainer, heating return
Safety valve, heating
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
5
Shutoff valve, heat supply
Pump , heating
Draining valve, heating return
Control center
Actuator, DHW
Actuator, heating
Temperature sensor, DHW
Temperature sensor, heating supply
Temperature sensor, heating return
Temperature sensor, outdoor
Heating return
Heating supply
District heating supply
DHW
CW
DHWC
District heating return
2 Operating instructions
2.1
Operation
The temperature and pressure of the incoming heating network water from the culvert network are very high.
For this reason, only the heat from this water is used. The heating network water does not enter the heating
and hot water systems of the building.
The heat from the heating network water is transferred to the heating and hot water systems of the building in
the heat exchangers. The heat is transferred through thin plates of acid-resistant stainless steel which keep the
heating network water completely separate from the systems in the building.
Midi Wall has automatic temperature control for heating and hot water. The heating circuit is controlled in
relation to outdoor temperature (option) and/or desired room temperature by means of a controller and
temperature sensor. When no heat is needed, the circulation pump in the heating circuit stops automatically,
but is started regularly to make sure that it does not seize up during long idle periods. The hot water
temperature is controlled by a temperature control system which is set to about 55 ºC.
After adjustment, the Midi Wall operates completely automatically. However, in hard water areas it is advisable
to be attentive and to remedy any faults in good time if the temperature of the hot water is too high; otherwise
the risk of lime deposits in the heat exchanger may increase.
2.2
Safety equipment/inspection



Daily inspection to check for leaks from pipes or components.
Weekly inspection to make sure that the operation of the heating and hot water control systems is
stable and that the temperature does not fluctuate. Temperature hunting causes unnecessary wear
of valves, actuators and heat exchangers.
Every three months check the safety valves and the pressure in the heating system.
To check the operation of a safety valve, turn its wheel/knob until water escapes from the waste pipe of the
valve, then close the wheel/knob quickly. Occasionally a safety valve may open automatically to release excess
pressure. After a safety valve has been open it is important that it closes properly and does not drip.
Hot water temperature in apartments or one family houses can be set to about 55°C. If the temperature is set
too high, there is a risk of scalding. Setting the hot water temperature too low may result in unwanted
bacteriological growth in the hot water system.
For setting and (if necessary) fine adjustment of the heating and hot water temperatures,
see chapter 5 User instructions operator control panel TAC2222.
The heating system is topped up via the topping up valve. Be sure to close the valve when the correct pressure
is reached. The water used to top up the system contains oxygen and may cause corrosion in the system. For
this reason, the system should be topped up as seldom as possible, at most once
If a joining must be loosened and then re-installed, for example when installing the substation or when
replacing a filter unit, the joining gaskets should be exchanged to prevent leaks.
6
3 Installation
3.1
Unpacking

Remove the transport packaging and check that the product has not been damaged in transit and that
the consignment agrees with the specifications.

When lifting the unit, take care not to apply stress to pipes and heat exchangers as this may weaken
them Lift the unit in the frame; avoid lifting the unit by holding the heat exchangers. Use pallet lift where
applicable, if using backstraps these should be attached to the substructure of the substation.

Note: Risk of injury lifting heavy objects.
3.2
Preparation

Choose a suitable installation area in accordance with official regulations.
The system may generate sounds during operation caused by pumps, regulators systems, flows etc.
This should be taken into consideration during installation of the unit, so that possible operational
sounds affect the surroundings as little as possible. This means that the system should be installed on
well-insulated walls, such as outer walls or on concrete walls.

Check the applicable regulations of the district heating supplier. The available differential pressure
should be at least 100 kPa and at most 600 kPa. Where the differential pressure is higher, a differential
pressure controller should be added to the installation.

Flush heating and hot water systems.
3.3
Mounting

Mount the substation on a wall with screws and bolts suitable for mounting wall material and substation
weight. The distance between floor and screw bracket should be 1420 mm. Note that distance between
screws are 400 mm. Mount the floor support on the central, use the middle mounting hole. Raise the
central and mount it on the wall.

Place the substation so that connections, adjustment equipment and safety valves are easily
accessible.

Mount the shutoff valves on district heating supply and return. Shutoff valves are not supplied.

Connect the pipe works to the connection points, see 3.8 Connection overview.

When executing hot work on or close by the substation, all incendiary components should be
demounted and removed.

With supply temperatures above 100°, it is recommended that the actuator is tilted or closed down, see
Picture 2.

Take rules and instructions regarding hot work into account.

Connecting pipes shall be suspended so that their weight does not stress the unit.

All connecting pipes within and connecting to the units system shall be insulated according to
standards and regulations.

Drainage pipes from safety valves must be taken to floor gully.

Energy meters must be installed at a prepared location, replacing a gauge block, or following the
instructions of the energy supplier.
NOTE; the connection pipe between the valves is just for draining not immersion sensors.
7


Retighten all connections, including those made at the factory. If connections need retightening after
the installation has been taken into service, the system should be depressurised before retightening. If
the system is not depressurised before retightening, gaskets will be damaged.
Required expansion volume shall be installed and provided with adequate pre-charge before start up.

Remount plugs in drain valves after possible draining of circuit.

Mount the outdoor temperature sensor on the north side of the building, 2 metres above the ground, or
higher. For installation of the outdoor temperature sensor, see 7.2 Installation of outdoor temperature
sensor.
Picture 2
3.4
Mounting the options

If the substation is connected to a low temperature system, for example floor heating, a safety
thermostat must be mounted and activated before start up. See 12.1 Floor heating thermostat.

If the substation shall be provided with a 3-point HB metering, see mounting instructions
12.2 3-point HB metering.

If the substation shall be provided with a floor stand, see mounting instructions
12.3 Mounting floor stand.
3.5
Adjustments and settings for start up
Open up incoming cold water supply and fill the service water and heating circuits, bleeding off any trapped air.
Check the operation and opening pressures of the safety valves.
 Adjust the hot water temperature by having a hot water tap open at normal flow rate for a time.
Measure the temperature at the draw-off point with a thermometer. The temperature should be
approximately 55°C. It takes about 20 seconds to get stable tap water temperature. See
troubleshooting chart for adjusting hot water temperature.
NOTE: Make sure that no cold water is mixed with hot water while making this adjustment.
.
 Start the heating circulation pump at the strongest flow setting during some minutes. The pressure
should be at least 100 kPa during winter and at least 60 kPa during summer.

Set the pump capacity of the heating circulation pump according to chapter 9, Pump settings and
capacity. Use the lowest setting that manages the heating demand for best electrical efficiency

Make any necessary adjustment of the heating curve of the control and regulating equipment.
Information about the controller can be found in this document.

Set time, date and hot water temperature on the adjustment center.

The property owner must be informed on how to operate, adjust and maintain the unit. It is overly
important to inform about the safety systems and the risks associated with the high pressure and
temperature of the district heating systems water supply.
8
3.6
Dismantlement
When the time comes for the substation to be dismantled and scrapped it must be disposed of in the correct
manner in accordance with local or national regulations.
3.7
Commissioning advice
The controller has been set at the factory. If any function needs tuning, values can be changed with reference
to this manual for parameter setting. Initially, the commissioning process should be carried out with the factory
settings. The parameter settings need tuning only if the district heat terminal does not function accordingly.
3.8
Connection overview
Picture 3
1
2
3
4
Heat Supply G1 1/4"
Heat Return G1 1/4”
CW G1”
VVC G1”
5
6
7
9
DHW G1”
DH Supply D=33,7
DH Return D=33,7
3.9
Measure sketch Midi Wall TA2222
Picture 4
10
4 Control center TAC2222
4.1
Flow adjustment
4.1.1 Control curve
The control curve for the flow temperature is
composed of three dimensioning points. The
peripheral points are permanently defined
according to the outdoor temperature, while the
breakpoint in the curve center is adjustable.
For systems lacking a reference sensor the
control curve can be parallel moved. Yet another
parallel movement can be executed for night time
temperature reduction. For systems with a
reference sensor the control curve can be
automatically adjusted depending on the room
temperature.
Picture 5
The flow temperature can be limited between a minimum and maximum temperature.
NOTE: For houses using floor heating the values for the diagram must be alternated, see 5.9 Parameters table.
4.1.2 Automatically adjusting the control curve
For systems lacking reference sensors it is possible to design a separate control curve through manually
setting the dimensioning points.
4.1.3 Damped outdoor temperature
The ability to control the flow temperature seeks to keep the indoor temperature at an adequate level, and
doing this independent to changes for the outdoor
temperature.
The building structures inherent heat inertness and
mass bring that a sudden change in outdoor
temperature affects indoor temperature after some
time delay. To effectively make use of the heat
storage in the building structure, the adjustment of
the indoor temperature utilizes an attenuated
outdoor temperature curve.
The extent of the attenuation is adjustable to fit all
types of buildings.
Picture 6
This function prevents a cooling impact when the
outdoor temperature quickly rises and unnecessary heating during the normally cool evening hours before a
night-time temperature lowering.
11
4.2
Time controlled operation
4.2.1 Control watch
The control watch has two week-programs. One program controls the night-time lowering of the heating. The
other controls the night-time lowering of the warm water drain and other optional equipment, i.e. the hot water
circulation pump. Furthermore, six optional weekend intervals can be programmed up to a year in advance.
4.2.2 Sliding night time lowering
To ensure that the heating system will
be able to reset the indoor
temperature after a night time
lowering at a low outdoor
temperature, the controller utilizes
sliding night time lowering.
The magnitude of the lowering is
dependent on the damped outdoor
temperature curve, dimensioned at
two customizable outdoor
temperatures.
Picture 7
At the lowest temperature, night time temperature lowering will totally default, and then gradually increase at
increasing outdoor temperature.
4.2.3 Morning heating
If the system is lacking reference sensor the
heating period varies depending on the damped
outdoor temperature complying a customizable
curve.
The signal output K2, goes high during morning
heating.
Picture 8
4.2.4 Morning increase
During morning heating, an extra increase in
flow temperature is obtained. If the system is
lacking reference sensor, the temperature
varies with the damped outdoor temperature.
At 10 °C the morning flow increase reaches its
maximum value and then gradually decreases
until -10 °C, respectively 20 °C outdoor
temperature, where it defaults.
Picture 9
12
4.2.5 Monday effect
After weekends, when night time operation runs more than 20 hours, the controller can start up heating earlier
than what would be compulsory with morning heating. This is done by a percentage addition to the time factor
for the curve controlling morning heating.
4.3
Hot water drain
The drain water can be set with separated set points for day and night according to the extra week-program.
To ensure stability at low strain, the deadband for the drain water controller is variable. This implies that a
larger deadband is used at low strain (for hot water circulation) and a smaller deadband when draining.
4.4
Pump controlling
According to pump controlling logics it means to utilize the buildings accumulated heat as efficiently as
possible. Thus, the pump will operate only when an actual heating need exists.
The following prerequisites apply:
 The pump is stopped and the controller valve is shut when the calculated flow rate falls below the user
defined rate.
 The pump is stopped and the controller valve is shut when the outdoor temperature exceeds the user
defined cut-off temperature. The time elapsed before restart after a pump stop can be defined to
between 0-12 hours.
When the condition for a pump stop is met, the pump is stopped after a non-adjustable time delay of 5 minutes.
4.4.1 Frost protection
The frost protection function for the pump ensures that the pump always starts and the valve begins to operate
when the outdoor temperature is less than +3°C with a hysteresis of 2°C.
4.4.2 Pump exercise function
Every Monday at 12.00, the pump starts automatically to prevent seizure.
4.5
Alerts
The following alert functions exist in the system:


Deviation alert for the flow rate temperature.
Deviation alert for hot water drain temperature.
Triggered alerts can be observed in the controller display and is reset automatically when the alert cause is
restored.
4.6
Voltage failure
The controller keeps all settings for unlimited time lapse. If a voltage failure lasts longer than 48 hours the clock
must be manually reset.
4.7
Maintenance
The controller does not need specific maintenance but should be kept clean. However, the controller equipment
must be attended regularly, so that plausible errors does not cause over heating or freezing of the circuit lines.
The menu window can, when needed, be dried with a moist cloth.
13
5 User instructions operator control panel TAC2222
Picture 10
1
2
3
4
5
6
7
8
24-hour time bar
Parameter number
Parameter value
Heating valve opens
Heating valve closes
Weekly program 2
Busser alarm
Manual control
9
10
11
12
13
14
15
Fixed daytime operation
Timer operation
Fixed night setback
Heating off
Morning heating
Pump
Alarm
Night setback during holidays
Forced night setback from external connection (flashing moon)
Extended day. op. from external connection (flashing sun)
14
5.1
Read of temperatures
Temperature
5.2
P No.
Procedure
Select parameter no. (P No.) by pressing
Outdoor temp.
P 01
Damped outdoor
temp.
P 02
Supply
temperature
P 03
Supply temp.,
calc setpoint
P 04
Return temo.,
heating
P 13
Room temp.
P 07
Room temp., calc.
setpoint
P 08
Domestic hot
water temp.
P 11
Domestic hot
water temp. calc.
setpoint
P 12
Return temp.,
dom. hot water
P 49
Press
P 99.
P No.
Procedure
or
.
Increase parameter no. by pressing
decrease by pressing
and
.
Hold button down for fast
increase/decrease.
Read the value.
and
at the time to get to P 15-
Setting the temperature
Temperature
Night setback of
supply temp.
P 06
Room temp.
setpoint, day
P 09
Room temp.
setpoint, night
P 10
Change param. value using
Hold button down for fast
increase/decrease.
Dom. hot water
temp. setpoint
P 53
Exit by pressing
Night setback,
dom. hot water
P 55
Press
and
P 15- P 99.
or
.
Increase parameter no. by pressing
15
and
.
or
.
.
at the same time to get to
5.3
Set time program for night time decrease
Time schedule
P No.
Procedure
1. Select param. no. (P14) using
or
.
Weekly program for night setback of
heating
P 14
2. Scroll using
or
.
3. Change half-hour segments by
pressing
(
= daytime operation).
4. Exit by pressing
P 63
Reduce heating at holidays
or
.
1. Select param. no. P63 using
and
.
2. Select holidays (1-6). Go to P64 using
.
3. Change start date (month.day) using
P 64
or
.
Go to P65 using
4. Change end date (mont.day) using
P 65
Clear holidays
P 63
P 64
P 65
or
.
Exit using
.
1. Select the holiday (see above).
2. Change start or end date to
[month].00 by pressing
3. Exit using
or
.
.
1. Select parameter no. (P61) using
and
Weekly program for domestic hot
water and output K4.
P 61
.
2. Scroll by pressing
or
3. Change by pressing
operation, K4 on).
4. Exit by pressing
16
.
( = daytime
.
5.4
Adjust the controller curve
Procedure
Select param. No (P No.) by pressing
param. value using
Exit by pressing
. Press
or
or
and
. Increase param. no. by pressing
and
at the same time to get to P15-P99. Change the
. Hold button down for fast increase / decrease.
..
Parallel shift ±°C
5.5
Read alarm message
Cause of the alarm
Circulation pump
P No.
P 82
Procedure
or
5.6
Supply temerature
P 83
Dom. hot water
temperature
P 84
.
Press
and
P15 – P99.
Read the value.
0 = NO ALARM, 1 = ALARM
Set operating mode
Action
Setting the operating mode:
P No.
P 00
Procedure
Change to operating mode required using
or
Heating off
Fixed night setback
.
Execute by pressing
Timer operation
Fixed daytime operation
Manual control
5.7
Set time
Action
P No.
Procedure
Read off the time
P 00
Read hour.minute
Set time
P 15
Change hour.minute
Set month and day
P 16
Change month.day
Set year
P 17
Change year
17
.
5.8
Return temperature limitation
The return water temperature can be limited by the
controller.
The limitation starts when the return temperature is
higher than its set max value, then the controller
limits the supply temperature.
Limitation is variable, i.e. depending on the outdoor
temperature according to a separate control curve,
with two adjustable curve points.
Picture 11
P nr
P13
P43
P44
P45
P46
P47
P48
Parameters
Return temperature,
heating
Return limitation on/off
Min
0°C
Max
Step
0,3°C
Default
0
2
1
1
Return limit., heating, P
band
Curve point( x0)
Curve point (y0)
Curve point (x1)
Curve point (y1)
10°C
200°C
0,5°C
20°C
Comments
Step=0,1 at 255°C
0=off
1= heating
2* heat+ dom.h.w
Not if P43=0
-30°C
40°C
-10°C
10°C
40°C
120°C
40°C
70°C
1°C
1°C
1°C
1°C
40°C
120°C
40°C
70°C
Not if P43=0
Not if P43=0
Not if P43=0
Not if P43=0
18
5.9
Parameters table
The list comprises all parameters.
Note! Values in brackets are for floor heating.
Pno Parameter
Default
00
Time / operating mode
01
Outdoor temperature
02
Damped outdoor temperature
03
Supply temperature
04
Supply temp. calc. setpoint
05
Curve shift
06
Night setback supply temp.
-5(5°C)
07
Room temperature
08
Room temp. calc. setpoint
09
Room temp. setpoint day
10
Room temp. setpoint night
11
Dom. hot water temperature
12
Dom. hot w. calc. temp. setpoint
13
Return temperature heating
14
Weekly program for heating
15
Time (hour:minute)
16
Date (month.day)
17
Date (year)
18
Reset curve heating (x1)
19
Reset curve heating (y0)
58 (35)
20
(26)
21
18
22
Supply temperature min.
23
Supply temperature max.
(40)
24
Supply controller P band
25
Run time for actuator, heating
300
26
Max. increase rate supp.setpoint
27
Auto. curve adjustment on/off
28
Auto. curve adjustment I time
29
Auto. curve adjustment max. adj.
30
Room control effect day
31
Room control effect night
32
Room dead zone
33
Outdoor temp. 0% night setback
-5
34
Outdoor temp.100% night
5
setback
35
Adaptive start time opt. on/off
36
Morning boost, max
37
Start time optimisation, max time 0
38
Start time optimisation at -10° C
39
Start time optimisation at +10° C
40
% Monday effect
41
Stop time optimisation at -10° C
42
Stop time optimisation at +10° C
43
Return limitation on/off
1
44
Return limitation, P band
45
Return limitation curve (x0)
40
46
Return limitation curve (y0)
120
47
Return limitation curve (x1)
40
48
Return limitation curve (y1)
70
49
Dom. hot water, return temp.
Pno
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
Parameter
Dom. h w, ret. limit. setpoint
Dom. h w, ret. limit.. P band
--Dom. h w, setpoint
Dom. h w, night setback on/off
Dom. h w, night setback offset
Dom. h w, switch. level high/low
Dom. h w, P band
Dom. h w, I time
Dom. h w, dead zone
Dom. hot w., run time for actuator
Weekly program for dom. h w., K4
Time for extended daytime op.
Holiday period (1-6)
Start date holiday period (P 63)
End date holiday period (P 63)
Time format 12 / 24 h
Daylight saving time period
Start dayl. saving time (month.day)
Start dayl. saving time (hour:min.)
End dayl. saving time (month.day)
End dayl. saving time (hour:minute)
Pump stop on/off
Pump stop, outdoor temp. limit
Pump stop, supply limit
Pump exercise on/off
Pump stop, min. off time
Adjustment of outdoor sensor
Adjustment of room sensor
Damping constant, outdoor temp
SPC effect, current
SPC effect at +10 V
Alarm, pump
Alarm, supply temp.
Alarm, dom. hot water temp.
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
------Manual control of Y1
Manual control of Y2
Manual control of K1
Manual control of K5/K6
Serial number (1)
Serial number (2)
----Display test, system info.
19
Default
55
9
75
10
1
15
18
0
6 Troubleshooting
6.1
Fault indication for TA2222
The following alarm functions exist:


Deviation alarm for flow rate temperature
Deviation alarm for hot water drain temperature
Triggered alarms can be monitored on the controller display. The alarm will reset automatically when the cause
of the alarm has been restored.
Cause of the alarm
Circulation pump
P No.
P 82
Procedure
or
Supply temerature
P 83
Dom. hot water
temperature
P 84
.
Press
and
P15 – P99.
Read the value.
0 = NO ALARM, 1 = ALARM
20
6.2
Fault codes for the Magna pump
Indicator light is off
Indicator light is on
Indicator light is flashing
Indicator
lights
Green
Red
Fault
The pump
is not
running
The pump
is not
running
Cause
Remedy
One fuse in the
installation is blown /
tripped out.
The current-operated
or voltage operated
circuit breaker has
tripped out
The pump mat be
defective
The pump has been
stopped in one of the
following ways.
1. With the button
Replace / cut the fuse.
Check that the electricity supply falls
within the specified range.
Cut the circuit breaker.
within the specified range
Replace the pump or call service for
assistance.
1. Start the pump by pressing
2. Switch on the on/off switch.
.
.
2. External on/off
switch in position
off.
The pump
has
stopped
due to a
fault.
The pump
is running
but is
faulty.
The pump
has been
set to stop
and is
faulty.
Electricity supply
failure.
Pump blocked and/or
impurities in the pump.
The pump may be
defective.
The pump is faulty, but
is able to operate.
The puma is faulty, but
is able to operate (has
been set to STOP).
Air in the system.
The flow is too high.
Noise in
the system.
Noise in
the pump.
The pressure is too
high.
The inlet pressure is
too low.
Air in the pump.
within the specified range.
Dismantle and clean the pump.
Replace the pump or call service for
assistance.
Try to reset the fault indication by briefly
switching of the electricity supply or by
pressing the button
,
or
.
In case of repeated faults, contact
service.
Vent the system.
Reduce the setpoint and possibly
change over to AUOTADAPT or constant
pressure.
Reduce the setpoint and possibly
change over to AUOTADAPT or
proportional pressure.
Set the pump to “MAX” by continuously
pressing the button
.
After venting, set the pump back to
normal duty by pressing the buttons
.
Note: The pump must not run dry.
21
,
7 Electrical installation
7.1
General
The wiring in Midi Wall conforms to the applicable rules for CE marking and has undergone electrical safety
testing and function testing. For permanent installation the substation must be connected to an all-pole isolator
switch. This must be done by a duly qualified electrician.
The substation must be connected to a grounded power outlet.
7.2
Installation of outdoor temperature sensor
Connect the outdoor temperature sensor to a terminal strip in accordance with the electrical diagram, if there is
a resistor, remove it.
The resistor simulates an outdoor temperature of 0°C.
2
If using a cable with two conductor area of 0.75mm the maximum cable length is 80 meters.
Picture 12
22
7.3
Electrical circuit diagram
Picture 13
23
8 Schematic diagram, main components
Picture 14
24
8.1
Option 3-point HB metering
Picture 15
1.
2.
3.
4.
5.
6.
Welded filter
Shut off valves
Manometer clock
Sensor pocket energy meter primary in
Sensor pocket energy meter primary out
Flanged dummy 260mm energy meter
25
9 Pump settings and capacity
9.1
General
Mini Wall is equipped with two circulation pumps, one for the hot water circulation, DHWC-pump, and one for
the heating circuit.
The DHWC pump is a traditional three speed circulation pump. The DHWC pump has a switch where the
speed/capacity can be set.
The circulation pump for heating circuit is a pressure controlled pump.
The pressure controlled pump has an operator control panel where the different settings can be done.
If all heaters are not at the same temperature, reset the pump to a higher setting. If there is a whistling sound in
the pipe system, select a lower output setting. The lowest possible setting is the most economical
9.2
DHWC pump Grundfos UPSO 15-55, capacity
Picture 16
Picture 17
26
9.3
Heating circuit pump Magna 25-100, settings and capacity
The pump is factory pre-set on AUTOADAPT without automatic night time decrease.
Pos.
1
2
3
4
5
Description
Buttons for setting
Indicator lights for operating
and fault indication and
symbol for indication of
external control
Button for change of control
mode
Light symbols for indication
of control mode and nighttime duty
Light fields for indication of
head, flow and operating
mode
Picture 18
9.3.1 Control modes
The Magna pump can be set to the one of three possible control modes:



AUTOADAPT (factory setting)
Proportional pressure
Constant pressure.
Each of the control modes can be combined with automatic night-time duty.
AUTOADAPT (factory setting)
This mode is recommended for most heating installations.
During operation, the pump automatically makes the necessary adjustment to the actual system characteristic.
This setting ensures minimum energy consumption and noise level which reduces operating costs and
increases comfort.
Proportional-pressure control
The pump head is changed continuously in accordance with the water demand in the system. The desired set
point can be set on the pump control panel.
Constant-pressure control
A constant head is maintained, irrespective of water demand. The desired set point can be set on the pump
control panel.
Automatic night-time duty
The pump changes automatically between normal duty and night-time duty depending on the flow-pipe
temperature. Automatic night-time duty can be combined with the above-mentioned control modes.
27
AUTOADAPT
Set on the control panel. The control mode AUTOADAPT continuously adapts the pump performance.
The set point of the pump has been factory-set to 5.5 meter and cannot be changed manually.
When the pump registers a lower pressure on the max, curve A2, the AUTO ADAPT function automatically selects
a correspondingly lower control curve, Hset2, thus reducing the energy consumption.
Picture 19 AUTOADAPT
A1: Original duty point.
A2: Lower registered pressure on the max curve.
A3: New duty point after AUTOADAPT control.
Hset1: Original set point.
Hset2: New set point after AUTOADAPT control.
Hfac: Factory pre-set set point.
The AUTOADAPT function can be reset by pressing the
button for approx. 10 seconds until the control mode
is back to the starting point, AUTOADAPT or AUTOADAPT with automatic night-time duty.
Proportional-pressure control
To be set on the control panel.
The pump head is reduced at decreasing water demand and increased at rising water demand.
Picture 20
28
Constant-pressure control
The pump maintains a constant pressure, irrespective of water demand.
Picture 21
9.3.2
Selection of control mode
System type
Description
Typical heating
systems
Grundfos recommends letting the pump remain in AUTOADAPT
mode. This ensures optimum performance at the lowest possible
energy consumption.
1. Two-pipe
 with a dimensioned pump head
heating
higher than 3 metres,
systems with
 very long distribution pipes,
thermostatic
 strongly throttled pipe balancing
valves and:
valves,
 differential pressure regulators,
 great head losses in those parts of
the system through which the total
quantity of water flows (e.g. boiler,
heat exchangers and distribution
pipe up to the first branching.)
2. Primary circuit pumps in systems with great head losses in
the primary circuit.
3. Air- conditioning
 heat exchangers (fan coils),
systems with
 cooling ceilings,
 cooling surfaces
1. Two-pipe
 with a dimensioned pump head
heating
lower than 2 metres,
systems with
 dimensioned for natural circulation,
thermostatic
 with small head losses in those
valves and
parts of the system through which
the total quantity of water flows
(e.g. boiler, heat exchangers and
distribution pipe up to the first
branching.) or
 modified to a high differential
temperature between glow pipe
and return pipe (e.g. district
heating).
2. Underfloor heating systems with thermostatic valves.
3. One-pipe heating systems with thermostatic valves or pipe
balancing valves
4. Primary circuit pumps in systems with small head losses in
the primary circuit.
Relatively great
head losses in
the distribution
pipes and airconditioning
systems
Relatively small
head losses in
the distribution
pipes
Select this
control mode
29
AUTOADAPT
Proportional
pressure
Constant
pressure
Set point setting
If AUTOADAPT is selected, the set point cannot be set.
The set point can be set by pressing
• Proportional pressure
• Constant pressure
• Constant-curve duty
or
when the pump is in control mode:
Set the set point so that it matches the system.
A too high setting may result in noise in the system whereas a too low setting may result in insufficient heating
or cooling in the system.
Automatic night-time duty
Once automatic night-time duty has been activated, the pump automatically changes between normal duty and
night-time duty (duty at low performance). Changeover between normal duty and night-time duty is dependent
on the flow-pipe temperature. The pump automatically changes over to night-time duty when the built-in sensor
registers a flow-pipe temperature drop of more than 10-15 °C within approx. 2 hours. The temperature drop
must be at least 0.1 °C/min.
Changeover to normal duty takes place without a time lag when the temperature has increased
by approx. 10 °C.
9.3.3 Maximum or minimum curve duty
The pump can be set to operate according to the max. or min. curve, like an uncontrolled pump, see Picture 22.
This operating mode is available, irrespective of the control mode.
Picture 22 Max and min. curves
The maximum curve mode can be selected if an uncontrolled pump is required.
The minimum curve mode can be used in periods in which a minimum flow is required. This operating mode is
for instance suitable for manual night-time duty if automatic night-time duty is not desired.
30
9.3.4
Control mode setting
To change the control mode, press
, pos. 3 on the control panel, according to this cycle:
Picture 23
Automatic night-time duty can be activated together with each of the control modes.
The light symbols, pos. 4 on the control panel, indicate the pump settings:
Light in
Control mode
AutoADAPT
AutoADAPT
Proportional
pressure
AutoADAPT
-
Automatic
night-time
duty
NO
NO
Constant pressure
NO
Constant curve
AutoADAPT
NO
YES
Proportional
pressure
YES
Constant pressure
YES
Constant curve
YES
“-“ = no light
Picture 24
31
9.3.5
Set point setting
Set the set point of the pump by pressing
or
when the pump has been set to proportional-pressure
control, constant-pressure control or constant-curve duty.
The light fields, pos. 5 on the control panel, indicate the set point set.
The light fields can indicate a maximum set point of 9 meter.
Picture 25
9.3.6
Setting to maximum curve duty
To change over to the maximum curve, press
continuously until "MAX" illuminates. To change back, press
continuously until the desired set point is indicated.
Picture 26 Maximum curve
32
9.3.7
Setting to minimum curve duty
To change over to the min. curve, press
back, press
continuously until "MIN" illuminates. See Picture 27. To change
continuously until the desired set point is indicated.
Picture 27 Minimum curve
9.3.8
Start/stop of pump
To stop the pump, press
continuously until "STOP" illuminates. When the pump is stopped, the green
indicator light will be flashing.
To start the pump, press
continuously.
9.3.9 Resetting of error indications
The fault indications are reset by briefly pressing any button. The settings remain unchanged.
If the fault has not disappeared, the fault indication will reappear. The time until the fault reappears may vary
from 0 to 255 seconds.
33
10 Service instructions
NOTE: Make sure that the Midi Wall substation has been correctly installed
Symptom
A.
Tap water
temperature too
low
B.
Tap water
temperature too
high
C.
Heating system
temperature too
high or too low
D.
No heating
E.
Noise in the
radiator system
Reason
District heating supply too low
District heating filter clogged
Section
A1
A2
Action
Check the primary inlet temperature
Check if the district heating filter is
blocked
Check the function of the valve and
actuator for hot water
Check the function of the valve and
actuator for hot water
Hot water valve and actuator does not
work
Hot water valve and actuator does not
work
A3
Heating supply temperature sensor
and outdoor temperature sensor does
not work
Heating circuit filter clogged
C1
Check the heating supply temperature
sensor and outdoor temperature sensor
C2
Check heating circuit filter
The heating control equipment may
need to be adjusted
Heating valve and/or actuator does not
work
Circulation pump not running
Air pockets in the substation or in the
heating circuit
C3
Check and adjust the heating curve
C4
Check the actuator and valve function
not work
Loss of function in the heating control
unit.
Heating circuit filter clogged
The heating pump capacity set too
high
Air in the heating pump
The heating pump motor or pump
component damaged
34
B1
D1
D2
D3
D4
Check that the electrical power is on
Check the circulation pump
Check pre-set heating parameters on
the control panel display
Vent the pump
D5
Run the pump manually
D6
E1
Reduce the pump capacity
E2
E3
Vent the pump.
Change pump components or the
complete pump
F.
Hot water or
heating
temperature
unstable
Pending differential pressure
F1
District heating filter clogged
F2
not work
DHWC pump is not running
F3
Faulting settings for drain hot water
G.
Heating system
often needs
topping up
H.
Noise in the DHWC
system
F4
F5
Leaks in the substation or in the
system
The heating system safety valve is
leaking or does not work
The expansion vessel cannot handle
the systems volume changes
G1
The DHWC pump capacity set too high
Air in the DHWC pump
The DHWC pump motor or pump
component damaged
H1
H2
H3
35
G2
G3
Check available differential pressure
and temperature
Check if the district heating filter is
blocked
Check that the electrical power is on
Check the circulation pump, DHWC
Check pre-set parameters on control
panel display
Check the substation and the system for
leaks
Check the heating system safety valve
Check the volume take-up and pressure
of the expansion vessel, or possible
leakage
Reduce the DHWC pump capacity
Vent the DHWC pump.
Change pump components or the
complete DHWC pump
A.
Tap water temperature too low
A.1
Check the primary inlet temperature
The temperature can be checked by means of the energy meter,
minimum 65ºC, or at the district heating medium supply. The hot
water drain temperature can be monitored on the control panel
display, parameter P11.
A.2
Check if the district heating filter is blocked
Close the shutoff valves for primary supply and primary return.
Release the filter holder and remove the cartridge (Picture 28).
Clean the filter with water and refit the cartridge. Screw the filter
holder with a momentum of 10-20 Nm. Open the primary supply
and return valves carefully.
Picture 28
A.3
Check the function for the hot water valve and actuator
Test the actuator by viewing parameter P88 on the control panel display. To open the actuator press (-)
button for 30 seconds. Control that the actuator opens, i.e. that the threaded rod closes in on the red
marker and the displayed value turns to 0 V.
To shut the actuator press the (+) button for approximately 30 seconds. Check that that the threaded rod
closes in on the blue marker and the displayed value turns to 10 V. When the actuator closes, it pulls the
valve guide pin towards itself.
Before the hot water valve can be checked the actuator must be dismantled. Unscrew the screws on the
shackle holding the actuator to the valve (Picture 29). Dismantle the actuator from the valve (Picture 30).
Picture 29
Picture 30
36
Press the valve guide pin gently (Picture 31) and check the valve´s travel and spring back.
Note: The valve may be very hot!
Picture 31
B.
B.1
C.
Tap water temperature too high
Check the function for the hot water valve and actuator
See A.3.
Heating system temperature is too high or too low
C.1
Check the heating supply temperature sensor and outdoor temperature sensor
Check the heating supply temperature sensor and the outdoor temperature sensor for correct placement
and function. This is controlled via the control panel display parameters P 03 and P01,
see 5.1 Read of temperature.
C.2
Disconnect the electrical power supply.
Shut closing valves for the heating supply and return. Release
the filter holder and remove the cartridge (Picture 32). Clean
the filter in water and refit the cartridge. Screw the filter holder
with a momentum of 10-20 Nm. Carefully open up the shutoff
valves for the heating supply and return.
Picture 32
37
C.3
Check and adjust the heating curve
See section 5.4 Adjust the controller curve and change the selected heating curve on parameter 05.
C.4
Check the actuator and valve function
Check the actuator by viewing parameter P94 on the control panel display. To open the actuator,
press (-) for approximately 30 seconds, to then check that the actuator opens, i.e. that the threaded rod
moves toward the red marker and the displayed value turns to 0 V.
To shut the actuator press the (+) button for approximately 30 seconds. Check that that the threaded rod
closes in on the blue marker and the displayed value turns to 10 V. When the actuator closes, it pulls the
valve guide pin towards itself.
Check the flow rate at the energy meter during break in of the valve.
If the system is lacking an energy meter, disconnect the heating actuator from the valve. Carefully press
the valve spindle with a tool (Picture 33) and check the valve´s travel and spring back.
NOTE: The valve may be very hot!
Picture 33
D.
No heating
D.1
Check the circulation pump
If the pump fails to start after stopping, start the pump at the highest setting.
D.2
Check pre-set heating parameters on the control panel display
Check the following:





set drift mode P00
set time and date P00
night time decrease P06
week program P14
holiday decrease P63-65
D.3
Vent the pump
The Magna pump is self-venting.
Possible remaining air in the pump may cause noise. This noise ceases after a few minutes run time.
If necessary quick venting of the pump can be obtained by setting the pump to the maximum speed for a
short period, depending on system size and design. When the pump has been vented, i.e. when the
noise has ceased, set the pump according to the recommendations
D.4
See C.1.
38
D.5
Run the pump manually
If it becomes necessary to run the pump and actuator manually, this
can be done by disconnecting the power to the operator control panel.
Disconnect the electrical plug for the pump. Connect the replacement
cable to the power supply and to the circulation pump. Next, open the
heating valve manually using the red knob on the actuator, see
Picture 34.
Flick down the red knob and open the valve enough to supply the
house property´s heating demand. This is to be regarded as a
temporary solution until the control unit problem is solved.
D.6
E.
E.1
Picture 34
See C.2.
Noise in the radiator system
This instruction is suitable for both the DHWC and the radiator pump.
Reduce the pump capacity
Reduce the pump capacity by selecting a lower setting on the pump when needed. Low pump capacity is
the more economical option.
E.2 Vent the pump
E.2.1 Magna pump
The pump is self-venting
See D.3.
E.2.2
E.3
F.
Grundfos UPS pump
Set the pump to speed III. Loosen the pump motor end nut to and let it stay opened until the air in the
pump is released. When the pump has been vented, i.e. when the noise has ceased, set the pump
according to the recommendations.
Change the pump components or the complete pump
If it becomes necessary to change the driving side of the pump, it can be dismantled without removing
the whole pump.
See chapter 11 Maintenance and repairs.
Hot water or heating temperature unstable
F.1
Check available differential pressure and temperature for district heat inlet from supplier
See A.1.
F.2
Check if district heat filter on primary inlet is clogged
Clean if needed. See A.2.
F.3
See C.1.
39
F.4
Check DHWC pump
Disconnect the power feed to the pump by pulling off the connecter before carrying out this
task. If the current is on when you use a screwdriver to assist the pump to start, the
screwdriver may be wrenched out of your hand when the pump starts.
If this doesn’t solve the problem, the pump normally can be started by
removing the pump motor end nut and helping the pump to start with the
aid of a screwdriver (Picture 35) in the notch on the engine shaft. If
possible, use a short screwdriver. If the pump is difficult to access,
disconnect the heating actuator.
Connect the power feed to the pump and try to start again.
Picture 35
F.5
G.
Check pre-set parameters on control panel display
Check set value for drain hot water, see 5.2 Setting the temperature.
Heating system often need topping
G.1
Check the substation and the system for leaks
Leaks from the substation or the heating system cause pressure drops.
Repair any leaks on the substation.
G.2
Check the heating system safety valve
Check that the heating system safety valve is not leaking and that it works properly. Check the safety
valves’ function by turning the wheel/knob until water runs out of the valve’s waste pipe and then close
the valve quickly.
G.3
Check the volume take-up and pressure equalizing of the expansion vessel
Check the expansion vessel for possible leakage.
The cause may be that the expansion vessel cannot manage the volume changes on the heating side.
The expansion vessel may have to be replaced. Switch off the power supply to the substation and close
the shutoff valves for the radiator supply and return.
Replace the expansion vessel.
Alternatively the system´s total volume of water may be too high, i.e. the volume changes are too large
for the expansion vessel. If so, add extra expansion volume.
H.
Disturbing noise from the circulation pumps
See E.
40
11 Maintenance and repairs
When carrying out repairs, please contact your local service partner.
11.1 Change the pumps
Either change the complete pump or just the pump motor.
Before starting out repairs always close the primary supply and return shutoff valves and drain
the system with the draining valves.
After finishing repair; open the shutoff valves. Start with primary supply and then the return lines,
in order to avoid pollutions in the system. Open up the valves slowly to avoid pressure surges
7.
8.
9.
10.
Disconnecting the electrical plug.
Release the brass nuts with a wrench and replace the pump (Picture 36).
Reattach the electrical plug.
If only changing the motor, release it by unscrewing four socket head cap screws and replace the
motor (Picture 37).
11. Reattach the electrical plug.
Picture 36
Picture 37
11.2 Change the heating actuator
1.
2.
3.
4.
Shut off power supply.
Open actuator lid and unscrew connecting wires attached to the wire terminal (Picture 38).
Unscrew the shackle attaching the actuator to the valve (Picture 39) and lift of the actuator.
Mount a new actuator and reattach the wire terminal.
Picture 38
Picture 39
41
11.3 Change the heating valve
1.
2.
3.
4.
Unscrew the heating actuator from the control valve (Picture 39).
Use a wrench to remove the control valve (Picture 40). Note the arrow direction on the valve.
Mount a new valve; and take especially care to the arrow direction.
Fasten the actuator.
Picture 40
11.4 Change the hot water actuator
1.
2.
3.
4.
Shut off the power supply.
Unsnap electrical wire quick coupling.
Unscrew the shackle attaching the actuator to the valve (Picture 41) and dismount the actuator.
Mount a new actuator and reattach the electrical wire quick coupling.
Picture 41
42
11.5 Change the hot water valve
1.
2.
3.
4.
Unscrew the tap water actuator from the control valve (Picture 41).
Use a wrench to remove the control valve (Picture 42). Note the arrow direction on the valve.
Mount a new valve; take special with care the arrow direction.
Reattach the actuator.
Picture 42
11.6 Change the temperature sensor heating supply/return
1. Carefully lift the sensor cover with a screwdriver (Picture 43) and unscrew the connecting wires in
attached to the wire terminal.
2. Loose the band the holds the sensor to the pipe (Picture 44).
3. Replace with a new sensor.
Picture 43
Picture 44
11.7 Change the outdoor temperature sensor
1.
2.
3.
4.
5.
Disconnect the electrical power supply.
Unscrew the lid by turning it anti-clockwise.
Unscrew the cables.
Loosen the cable fitting.
Install a new outdoor temperature sensor.
Picture 45
43
12 Options
The mounting instructions are described for a new installation. If the kits are supposed to be installed on an
already installed subsystem, you will have to release the water pressure and disconnect the electrical power
supply before starting. The installation must be carried out by a fully qualified electrician.
12.1 Floor heating thermostat
Heating systems with under floor heating have to be equipped with a heating thermostat. If the
heating system is not equipped with the thermostat, the floor heating system and floors in general
might be damaged.
1. First disconnect the substation electrical power supply cable. Disconnect the electrical
plug on the circulation pump.
2. Attach the electrical box for under floor heating on the mounting plate.
3. Connect the new power supply cable from the electrical box to the circulation pump.
4. Reconnect the existing power supply cable to the connection on the electrical box.
5. Attach the thermostat to the pipe for heating supply.
Picture 46
6. Set the correct maximum temperature value for the thermostat.
7. Attach all electrical wires with the necessary amount of straps. It is important not to attach electrical
wires on primary heating pipes and sharp edges.
Set recommended settings for under floor heating systems. Instructions regarding installation parameters see
chapter, see 5.9 Parameters table.
12.2 3-point HB metering
Mounting the 3-point HB metering:
1.
2.
3.
4.
5.
6.
Close the shut-off valves for primary inlet and return.
Unscrew the nut preceding the energy meter and remove energy meter and pipe.
Unscrew the nut following primary inlet and remove the filter and welding end.
Thread the metering profile into the frame´s.
Screw the metering and the central together.
Open the shut-off valves, first primary inlet then primary return.
Picture 47
Picture 48
44
12.3 Mounting floor stand
1.
2.
3.
4.
Mount two floor supports to the central. Use the outer mounting holes.
Mount the floor stand feet on the floor support.
Raise the central against a wall.
We recommend that the central is mounted to the wall.
The distance between floor and screw bracket should be 1330 mm. Note that distance between screws
are 400 mm.
Picture 49
Picture 50
12.4 GENI module
Function:
 external analog control of head or speed via a signal from an external 0-10 V signal transmitter.
 external forced control via inputs for:
- max. curve
- min. curve
 bus communication via GENIbus
The pump can be controlled and monitored by a Grundfos Control MPC Series 2000, a building
management system or another type of external control system.
 external start/stop
The pump can be started and stopped via the = digital input.
45
12.5 Balancing valve DHWC
Set the valve to a specific pressure drop according to:
1.
2.
3.
4.
5.
Close the valve fully (Picture 51).
Open the valve the correct numbers of turns (Picture 52).
See the diagram (Picture 54) for numbers of turns. In this example 2,3 turns.
Using a 3 mm Allen key, turn the inner spindle clockwise until stop.
The valve is now set.
To check the setting: Close the valve, the indicator shows 0.0. Open it to the stop position. The indicator then
shows the set value, in this case 2.3 (Picture 52).
The diagram shows the pressure drop for different settings and flow rates.
Four turns corresponds to fully opened valve (Picture 53). Opening it further will not increase the capacity.
Picture 51
Picture 52
Picture 53
46
Picture 54
*) recommended area
**) 25 dB (A)
***) 35 dB (A)
47
13 Technical data and performance
13.1 Operation data Midi Wall 70
Primary side
Heating
DHW
Design pressure PS
Design temperature TS
Relief pressure safety-valve
16 Bar
120°C
-
6 bar
90°C
3 Bar
10 Bar
90°C
9 Bar
Volume Heat exchanger, L
1,44/2,1 L
1,55 L
2,1 L
CB60-30M
Temperature
program (°C)
Heating
Capacity CB
kW
type
100-63/60-80 (62,4)
100-63/60-80 (62,5)
100-53/50-70 (51,3)
100-48/45-60 (45,6)
100-43/40-60 (41,3)
100-43/40-70
100-43/40-80
100-36/33-40 (33,1)
100-33/30-60 (33)
70
74
73
55
73
72
29
25
90
Plates
no
60
60
60
60
60
60
60
60
60
30
30
30
30
30
30
30
30
30
Plates
primary
Plates
secondary
1*14ML
1*14ML
1*14ML
1*14ML
1*14ML
1*14ML
1*14ML
1*14ML
1*14ML
1*15MH
1*15MH
1*15MH
1*15MH
1*15MH
1*15MH
1*15MH
1*15MH
1*15MH
Flow P dPp
l/s
kPa
0,45
0,48
0,37
0,25
0,31
0,30
0,12
0,09
0,32
5,1
5,7
3,6
1,8
2,5
2,5
0,5
0,3
2,8
Flow S dPs
l/s
kPa
0,84
0,89
0,87
0,88
0,87
0,57
0,17
0,85
0,72
13,5
14,9
14,8
15,2
15,1
6,9
0,7
14,9
10,7
CB60-40L:2
Temperature
program (°C)
DHW
Capacity CB
Plates
Plates
Plates
Flow P dPp
Flow S dPs
kW
no
primary
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
secondary
l/s
l/s
type
80-23/10-60 (19,0)
153
60
40
80-23/10-60 (16,1)
92
60
40
80-23/10-55 (16,1)
137
60
40
80-23/10-55 (13,9)
83
60
40
70-25/10-55 (19,6)
137
60
40
70-25/10-55(16,7)
83
60
40
70-22/10-55 (19,6)
137
60
40
70-22/10-55 (16,7)
83
60
40
65-22/10-55
124
60
40
65-22/10-55 (19,3)
83
60
40
48
kPa
kPa
2*10 L
0,62
19,1
0,73
31,3
2*10 L
0,35
6,9
0,44
12,3
2*10 L
0,59
14,6
0,73
31,7
2*10 L
0,31
5,4
0,44
12,4
2*10 L
0,75
22,5
0,73
31,4
2*10 L
0,38
8,0
0,44
12,3
2*10 L
0,70
22,5
0,73
31,4
2*10 L
0,38
8,0
0,44
12,3
2*10 L
0,71
24,9
0,66
25,8
2*10 L
0,47
10,5
0,44
12,2
Primary side
Heating
DHW
Design pressure PS
16 Bar
120°C
-
6 bar
90°C
3 Bar
10 Bar
90°C
9 Bar
2,5/2,1 L
2,6 L
2,1 L
CB60-50M
Temperature
program (°C)
Heating
100-63/60-80 (62,2)
100-53/50-70 (51,6)
100-48/45-60 (45,5)
100-43/40-60 (40,6)
100-43/40-70
100-43/40-80
100-36/33-40 (33,0)
100-33/30-60
Capacity CB
kW
type
119
118
88
116
130
53
40
162
Plates
no
60
60
60
60
60
60
60
60
50
50
50
50
50
50
50
50
Plates
primary
Plates
secondary
1*24 ML
1*24 ML
1*24 ML
1*24 ML
1*24 ML
1*24 ML
1*24 ML
1*24 ML
1*25 MH
1*25 MH
1*25 MH
1*25 MH
1*25 MH
1*25 MH
1*25 MH
1*25 MH
Flow P dPp
l/s
kPa
0,77
0,60
0,40
0,49
0,55
0,22
0,15
0,58
6,0
3,8
1,8
2,6
3,2
0,6
0,3
3,6
Flow S dPs
l/s
kPa
1,42
1,41
1,41
1,39
1,04
0,32
1,37
1,29
15,1
15,1
15,1
14,9
8,6
0,9
14,8
13,2
CB60-40L:2
Temperature
program (°C)
DHW
Capacity CB
Plates
Plates
Plates
Flow P dPp
Flow S dPs
kW
no
primary
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
secondary
l/s
l/s
type
80-23/10-60 (19,0)
153
60
40
80-23/10-60 (17,1)
113
60
40
80-23/10-55 (16,1)
137
60
40
80-23/10-55 (14,7)
102
60
40
70-25/10-55 (19,6)
137
60
40
70-25/10-55(17,8)
102
60
40
70-22/10-55 (19,6)
137
60
40
70-22/10-55 (17,8)
102
60
40
65-22/10-55
124
60
40
65-22/10-55 (16,2)
102
60
40
49
kPa
kPa
2*10 L
0,62
19,1
0,73
31,3
2*10 L
0,44
10,4
0,54
17,9
2*10 L
0,59
14,6
0,73
31,7
2*10 L
0,38
8,0
0,54
18,1
2*10 L
0,75
22,5
0,73
31,4
2*10 L
0,48
12,1
0,54
17,9
2*10 L
0,70
22,5
0,73
31,4
2*10 L
0,48
17,8
0,54
17,9
2*10 L
0,71
24,9
0,66
25,8
2*10 L
0,56
16,2
0,54
17,8
Primary side
Heating
DHW
Design pressure PS
16 Bar
120°C
-
6 bar
90°C
3 Bar
10 Bar
90°C
9 Bar
3,0/2,1 L
3,1 L
2,1 L
CB60-60M
Temperature
program (°C)
Heating
Capacity CB
kW
type
100-63/60-80 (62,1)
100-53/50-70 (51)
100-48/45-60 (45,1)
100-43/40-60 (40,4)
100-43/40-70
100-43/40-80
100-36/33-40 (33,1)
100-33/30-60
139
138
103
136
158
65
47
198
Plates
no
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
Plates
primary
Plates
secondary
1*29 ML
1*29 ML
1*29 ML
1*29 ML
1*29 ML
1*29 ML
1*29 ML
1*29 ML
1*30 MH
1*30 MH
1*30 MH
1*30 MH
1*30 MH
1*30 MH
1*30 MH
1*30 MH
Flow P dPp
l/s
kPa
0,90
0,70
0,47
0,57
0,66
0,27
0,18
0,71
6,2
4,0
1,9
2,7
3,6
0,7
0,3
4,1
Flow S dPs
l/s
kPa
1,66
1,65
1,65
1,63
1,26
0,39
1,61
1,58
15,1
15,1
15,2
15,0
9,2
1,0
14,9
14,4
CB60-40L:2
Temperature
program (°C)
DHW
Capacity CB
Plates
Plates
Plates
Flow P dPp
Flow S dPs
kW
no
primary
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
1*10
L+1*9 L
secondary
l/s
l/s
type
80-23/10-60 (19,0)
153
60
40
80-23/10-60 (18,1)
134
60
40
80-23/10-55 (16,1)
137
60
40
80-23/10-55 (15,4)
121
60
40
70-25/10-55 (19,6)
137
60
40
70-25/10-55(18,8)
121
60
40
70-22/10-55 (19,6)
137
60
40
70-22/10-55 (17,1)
121
60
40
65-22/10-55
124
60
40
65-22/10-55 (21,8)
122
60
40
0,62
19,1
0,73
31,3
2*10 L
0,53
14,6
0,64
24,6
2*10 L
0,59
14,6
0,73
31,7
2*10 L
0,46
11,2
0,64
24,8
2*10 L
0,75
22,5
0,73
31,4
2*10 L
0,66
17,1
0,64
24,6
2*10 L
0,70
22,5
0,73
31,4
2*10 L
0,61
17,1
0,64
24,6
2*10 L
0,71
24,9
0,66
25,8
2*10 L
0,68
23,3
0,64
24,4
230V 50Hz 1-phase 290-315W
<70dB(A), 1,6 m above floor level, 1 m from source
730x510x1115 mm (WxDxH)
65-85 kg
50
kPa
2*10 L
13.4 Technical data
Electrical data:
Noise level:
Main measurements:
Weight:
kPa
14 Declaration of conformity art 3.3
51
15 Declaration of conformity Cat 1
52

Installation, service and operating instruction Alfa Laval Midi Wall

Transcription

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