Domestic Hot Water Heat Pump Service Manual
8
Refrigerant circuit
GQ1: Compressor
GQ2: Fan
RM1: Check valve
EP1: Condenser
EP2: Evaporator
HZ1: Filter drier
QN1: Solenoid valve
QN2: Thermostatic expansion valve
XL3: Service valve
Water circuit
XL1: Water outlet
XL2: Water inlet
XL4*: Coil top
XL5*: Coil bottom
XL6: Air outlet
XL7: Air inlet
XL8: Condensate outlet
XL9*: Hot water circulation
EP3*: Coil
EB1: Electric heater
FR1: Anode
FN1: Thermal protection
The items with * are optional.
Figure 4 – Design of the heating circuit and the main components
Sensors
BBT1: Air inlet temperature
BBT2: Evaporator temperature
BBT3: Tank water temperature
BBT4*: Additional temperature
BBT5*: Additional temperature
(not included)
BP1: Pressostat
Electric components
AA1: Main printed circuit board
AA2: Display circuit board
WF1: Modbus port
GC1*: Solar 0-3V/10V
QA1*: SG-ready port
GP1*: Additional supply to pump
or damper
The items with * are optional.
Figure 5 – Design of tank, condenser and related components
Nomenclature according to standard
IEC 81346-1 and 81346-2.
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