20S
63H1
CM
CT
EEV-C
EEV-H
FMo1
LPT
Tho-A
Tho-D
Tho-R1
Tho-R2
Tho-S
4-way valve
High pressure switch
Compressor motor
Current sensor
Expansion valve, cooling
Expansion valve, heating
Fan motor
Low pressure sensor
Temperature sensor, outdoor air
Temperature sensor, hot gas
Temperature sensor, heat exchanger out
Temperature sensor, heat exchanger in
Temperature sensor, suction gas
EP21-BT2
EP21-BT3
EP21-GP10
EP21-QN11
QN12
Temperature sensor, supply 2
Temperature sensor, return 2
Circulation pump, system 2
Mixing valve, system 2 3-way ball type 35sec
Shuttle valve for heating /cooling
BP4
BP5
BT1
BT2
BT3
BT6
BT12
BT15
BT19
BT24
BT30
CM1
CP1
CW
EB1
EP2
FD1
FL1
FL2
FQ1
GP1
GP10
HQ1
HS1
HW
MH-RG10
QM30
QM31
QN11
0-4.15 MPa
0-4 Bar
(enclosed)
φ
11
35-45
℃
adjustable
9kW (3-phase)
98
℃
2.5 Bar
variable flow
0.8mm2
bi-flow 083
2-way 35sec
2-way 35sec
3-way ball type 35sec
High pressure sensor
Pressure gauge
Temperature sensor, outdoor air (external)
Temperature sensor, supply
Temperature sensor, heat exch. in (Twin)
Temperature sensor, tank water
Temperature sensor, heat exch. out (Twout)
Temperature sensor, liquid pipe (Thi-L)
Temperature sensor, immersion heater
Temperature sensor, external heat source
Thermostat, standby mode
Expansion vessel
Buffer vessel
Sanitary cold water inlet
Immersion heater
Heat exchanger
Temperature limiter
Safety valve, HW
Safety valve, tank
Mixing valve, HW
Circulation pump, climate system
Circulation pump, external 1
Strainer (water)
Filter dryer (refrigerant)
Sanitary hot water outlet
Room sensor MH-RG10 (accessory)
Reversing valve, hot water
Reversing valve, climate system
Mixing valve
Function
The heat pump prioritises hot water charging. The compressor
output is adjusted according to the outdoor temperature. The
circulation pump varies the flow to maintain a high charge
temperature.
When the water heater is full, the valves QM30 and QM31
switch to the heating system. The heat pump is then controlled
by a calculated set point value on the ow line. The compressor
varies the output according to the demand. The circulation
pump runs at a xed set speed.
Extra shunt (EP21-QN11) lowers the temperature on system 2
according to settings in indoor unit.
If the compressor does not manage the entire heat demand, the
electric heater is activated if it is allowed by setting and the
heat shunted out on the ow line.
During cooling the valve QN12 switches to the cooling system.
The heat pump is then controlled by a calculated set point value
on the ow line. The compressor varies the output according to
the demand. The circulation pump runs at a xed set speed.
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