Nibe F2120 - The Heat Pump - The Heart of the House; Heat Pump Function Explained

Principle of operation
Drip tray heater
Fan
Inverter cooler
Subcooler,
cooling
operation
Solenoid
valve
QN4
Particle filter
HQ9
EEV 1
QN1
Non-return
valve
RM1
Subcooler
BT16
BT28
BT84
M
BT17
BP8
BP2
BP9
BP1
4-way valve
QN2
BP11
BT28
EEV 2
QN34
BT14
BT15
Flow pipe
Return pipe
Drying
filter
HS1
BT3
BT12
Condenser,
EP2
Evaporator,
EP1
Compressor
GQ10
InformationDesigna-
tion
InformationDesigna-
tion
EvaporatorEP1High pressure switch (45 bar)BP1
CondenserEP2Low pressure switch (1.2 bar)BP2
CompressorGQ10Low pressure transmitterBP8
Drying filterHS1High pressure sensorBP9
Fan motorMPressure sensor, injectionBP11
Expansion valveQN1Temperature sensor, returnBT3
4-way valveQN2Temperature sensor, condenser supply lineBT12
Shut off valveQN4Temperature sensor, hot gasBT14
Expansion valve, subcoolerQN34Temperature sensor, fluid pipeBT15
Non-return valveRM1Temperature sensor, evaporator inBT16
Condensation water trough heaterTemperature sensor, suction gasBT17
Inverter coolerTemperature sensor, ambientBT28
SubcoolerTemperature sensor, injectionBT81
Particle filterHQ9Temperature sensor, suction gas evaporatorBT84
Subcooler, cooling operation
F2120Chapter 3 | System description10
3 System description