Pipe connections
Connection, heating medium supply line G20
int.
XL1
Connection, heating medium return line G20
int.
XL2
Connection, cold water G20 int.XL3
Connection, hot water G20 int.XL4
Connection, docking from heat pump G20 int.XL8
Connection, docking to heat pump G20 int.XL9
Connection, docking in high temp Ø22 mmXL18
Connection, docking out high temp Ø22 mmXL19
Connection, expansion tank G20 int.XL30
HVAC components
Circulation pumpGP1
Charge pumpGP12
Drain valve, climate systemQM1
Mixing valve, additionQN11
Venting, climate systemQM20
Reversing valve, climate system/water heating,
flow line
QN10
Reversing valve, climate system/water heating,
return line
QN35
Sensors etc.
Manometer, heating systemBP5
Temperature sensor, heating medium flow (not
visible in image)
BT2
Temperature sensor, heating medium return
(not visible in image)
BT3
Temperature sensor, hot water, chargingBT6
Temperature sensor, hot water, topBT7
Thermostat, standby modeBT30
Temperature sensor, external dockingBT54
Temperature sensor, heating medium supply
after immersion heater
BT63
Electrical components
Immersion heater cardAA1
AA1-S2 Switch (DIP switch) on circuit board
AA1-X1 Terminal block incoming
AA1-X3 Terminal block, immersion heater
AA1-X7 Terminal block, immersion heater
Base cardAA2
Input circuit boardAA3
AA3-X4 Terminal block, current sensors
Display unitAA4
AA4-XJ3 USB socket
AA4-XJ4 Service socket
Extra relay circuit boardAA7
Energy meterBF1*
Immersion heaterEB1
Miniature circuit-breakerFA1
Temperature limiterFD1
Auxiliary relay, emergency mode.K1
SwitchSF1
Network cable for NIBE UplinkTM
W130
Miscellaneous
Rating platePF1
Serial number platePF3
Sign, pipe connectionsPF4
Cable glandUB1
Cable glandUB2
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
*Applies to VVM 310 EMK. Available as accessory EMK 310 for other markets.
NIBE™ VVM 310Chapter 3 | Indoor module's design10
