Pipe connections
Connection, heating medium flow lineXL 1
Connection, heating medium return lineXL 2
Connection, cold waterXL 3
Connection, hot waterXL 4
Connection, docking inXL 8
Connection, draining heating medium
4
XL 10
Ventilation connection, exhaust airXL 31
Ventilation connection, extract airXL 32
HVAC components
Expansion vesselCM 1
Safety valve, water heaterFL 1
Safety valve, climate systemFL 2
Vacuum valve
2
FL 6
Mixer valve, hot water
2, 3
FQ 1
Circulation pumpGP 1
Filler valve, hot water heater
2, 3
QM 10
Filler valve, climate system
2, 3
QM 11
Filler valve 2, climate system
2, 3
QM 13
Venting, heating mediumQM 20
Shut-off valve, heating medium flowQM 31
Shut off valve, heating medium returnQM 32
Shunt valveQN 11
TundishWM 1
Overflow water dischargeWM 2
Overflow pipe, safety valve hot water heaterWP 1
Overflow pipe, safety valve climate systemWP 2
Overflow pipe, condensationWP 3
Sensors etc.
High pressure pressostatBP 1
Low pressure pressostatBP 2
Pressure gauge, heating systemBP 5
Outside sensor
1
BT 1
Temperature sensors, heating medium flowBT 2
Temperature sensors, heating medium returnBT 3
Temperature sensor, hot water, controlBT 6
Temperature sensor, hot water, displayBT 7
Temperature sensor, evaporator
1
BT 16
Temperature sensor, compressor operationBT 18
Temperature sensor, immersion heater opera-
tion
BT 19
Temperature sensor, exhaust airBT 20
Temperature sensor, extract airBT 21
Thermostat, backup heatingBT 30
Room sensor
1
BT 50
Electrical components
Immersion heater cardAA 1
Base cardAA 2
Input circuit boardAA 3
Display unitAA 4
AA4-XJ3 USB socket
AA4-XJ4 Service socket
Sacrificial anode card
4
AA 8
Connection card air treatment section, exhaust
air
AA100
CapacitorCA 1
Immersion heaterEB 1
Compressor heaterEB 10
Miniature circuit-breakerFA 1
Miniature circuit-breakerFA 2
Temperature limiterFD 1
Shunt motor with hand wheelMA 1
EMC-filterRF 3
SwitchSF 1
Network cable for NIBE Uplink
TM
W130
Cooling components
EvaporatorEP 1
CompressorGQ 10
Drying filter
1
HZ 2
Expansion valve
1
QN 1
Ventilation
Exhaust air fanGQ 2
Exhaust air filter
1
HQ 10
Filter cover, exhaust airUR 1
Miscellaneous
Rating platePF 1
Serial number platePF 3
Cable glandUB1
Cable glandUB2
1
Not visible in the image
2
Only heat pumps with copper vessel.
3
Only heat pumps with stainless steel vessel.
4
Only heat pump with enamelled vessel.
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
13Chapter 3 | The heat pump designNIBE™ F370
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