4 Description of the product
4.1
Operating principle
The outdoor unit produces heat or cold and transfers it to the indoor mod
ule via the refrigerant in the plate exchanger. The indoor module is equip
ped with a specific control system which is used to adjust the temperature
of the heating water to the needs of the home.
4.2
Main components
1 Safety valve
2 Exchanger
3 Air vent
4 PCB box
5 Low-loss header
6 Pressure gauge
7 Display
8 Control panel
9 Circulating pump
10 Flow meter
11 8-litre expansion vessel
1 Safety valve
2 Exchanger
3 Air vent
4 Low-loss header with electrical back-up
5 PCB box
6 Pressure gauge
7 Display
8 Control panel
9 Circulating pump
10 Flow meter
11 8-litre expansion vessel
1 HPC–01 PCB: PCB for interface with the outdoor unit
2 EHC–04 central unit PCB: Control system for the heat pump and
the first heating circuit
Fig.13
iMPI/H
MW-3000535-01
9
2
3
5
4
7
6
8
11
1
10
Fig.14
iMPI/ET, iMPI/EM
MW-3000534-01
9
2
3
4
5
7
6
8
11
1
10
Fig.15
Position of the PCBs
MW-3000587-01
1
2
4 Description of the product
26
AWHP-2 iMPI
7685645 - v04 - 07032018