28
2) PCB B, Main control board of heat pump system
2
6
13
CN30
CN11
CN27
S3
CN37
CN20
CN8
CN5
CN35
CN36
S5
SW4
SW3
CN22
CN18
CN10
CN7
CN6
CN4
CN53
CN9
CN24
CN28
S6
CN29
CN31
CN38
CN21
CN41
CN26
CN109
+
+
ON
2
1
ON
2
1
3
3
ON
2
1
ON
2
1
3
3
A
.
8
1
4
20V
PGND
12V
GND
.
9V
GND1
.
2
7
9
16
.
.
.
18V
.
V i n
6
1
3
17
27
19
8
7
24
9
23
4
5
18
10
11
14
25
12
22
16
20
21
15
26
28
29
30
1
2
3
4
5
6
7
Port for communication with hydro-box
control board (CN24)
Assembly unit
Assembly unit
Code
Code
9
15
16
17
18
19
20
21
22
23
24
25
Reserved(CN21)
Port for temp.sensor Tp(CN8)
Port for temp.sensor Th(CN5)
Port for pressure sensor(CN6)
Power supply port from PCB C(CN41)
Port for ground wire(CN38)
Port for eletric heating tape2(CN7)
Port for 4-way valve(CN18)
Reserved(CN11)
Port for outdoor ambient temp. sensor and
condenser temp.sensor(CN9)
8
10
11
12
13
Port for eletric heating tape1(CN10)
Port for communication with PCB C(CN4)
Port for 2-way valve 6(CN27)
26
Port for communication with Power Meter(CN26)
14
27
28
29
Port for 2-way valve 5(CN20)
Port for communication with PCB A(CN36)
Port for electrical expansion valve(CN22)
Port for fan 310VDC power supply(CN53)
Port for high pressure switch and quick
check(CN29)
Port for fan 15VDC power supply(CN30)
Port for communication H1H2E(CN37)
Port for low pressure switch(CN31)
Port for communication XYE(CN28)
Port for fan(CN109)
DIP switch(S5,S6)
Rotary dip switch(S3)
Key for force cool&check(S3,S4)
Port for temp.sensors(TW_out, TW_in,
T1, T2,T2B )(CN35)(Reserved)
30
Digital display(DSP1)
EN
IDOLA M 3.2
04÷16T
CAUTION
34
Ethylene Glycol and Propylene Glycol are TOXIC
WARNING
NOTE
During filling, it might not be possible to remove all air in the system. Remaining air will be removed through the
automatic air purge valves during the first operating hours of the system. Topping up the water afterwards might be
required.
The water pressure will vary depending on the water temperature (higher pressure at higher water temperature).
However, at all times water pressure should remain above 0.3 bar to avoid air entering the circuit.
The unit might drain-off too much water through the pressure relief valve.
Water quality should be complied with EN 98/83 EC Directives.
Detailed water quality condition can be found in EN 98/83 EC Directives.
Connect the water supply to the filling valve and open the valve.
Make sure the automatic air purge valve is open (at least 2 turns).
Fill with water pressure of approximately 2.0 bar. Remove air in the circuit as much as possible using the air purge
valves. Air in the water circuit could lead to malfunction of the backup electric heater.
9.5 Filling water
Do not fasten the black plastic cover on
the vent valve at the topside of the unit
when the system is running. Open air
purge valve, turn anticlockWise at least
2 full turns to release air from the
system.
CounterclockWise rotation, remove the flow switch.
Drying the flow switch completely.
When the unit is not running for a long time, make sure the unit is powered on all the time. If you want to cut off the
power, the water in the system pipe needs to be drained clean to avoid the unit and pipeline system being damaged by
freezing. Also the power of the unit needs to be cut off after water in the system is drained off.
Cod. 3QE47850 - Rev. 00 - 03/2022