Nibe VVM 500 Service Manual

External additional heater Gas/Electric/Oil fired
boiler
FunctionOutput
Control EM1EB1-AA5-K1
Not usedEB1-AA5-K2
Not usedEB1-AA5-K3
Circulation pump GP15EB1- AA5-K4
External additional heat, Electric heater
FunctionOutput
Contactor 1EB1-AA5-K1
Contactor 2EB1-AA5-K2
Contactor 3EB1-AA5-K3
Circulation pump GP15EB1- AA5-K4
Cooling
FunctionOutput
Reversing valve QN12EQ1-AA5-K1
Circulation pump GP13EQ1-AA5-K2
Circulation pump GP12EQ1-AA5-K3
Not usedEQ1-AA5-K4
Function check, circulation pumps
With forced control of the circulation pumps it is neces-
sary to check the supply (230 V AC) and the control
signal (0-10 V DC).
Heating medium pump (GP1)
LED PWM1 on
Card AA2
PVM1, X2:1-2Pump speed
GP1
Not litapprox 0 V DC100 %
Half litapprox 5 V DC50 %
Litapprox 10 V DC0 %
Charge pump (GP12)
LED PWM2 on
Card AA2
PVM2, X2:3-4Pump speed
GP12
Not litapprox 0 V DC100 %
Half litapprox 5 V DC50 %
Litapprox 10 V DC0 %
29Chapter 6 | TroubleshootingNIBE™ VVM 500

Nibe VVM 500 Specifications

General

Type	Indoor module
Volume	500 liters
Integrated immersion heater	Yes
Energy efficiency class, DHW preparation	A
Compatible with	NIBE air/water heat pumps
Refrigerant	Not applicable
Cooling Capacity	Matches the heat pump it is connected to.