Gas
Function
NIBE SPLIT ACVM270 activates additional heat when the compressor output is not sufficient for the house demand.
When the additional heat is activated, valves QM 30 and QM31 switch to the climate system. Valve QN11 shunts in
the event of a heating demand on the supply line. Hot water is produced with the additional heat.
Max temp 65°C out from the gas fired boiler.
Control signal for additional heat taken from terminal block X3.
Strap between X3:2-3 removed.
The addition's control phase is connected to terminal block X3:2 (230V), X3:4 (N) (max 0.4 A).
Menu 9.2.8 set to External Line 1.
Alt 1: The gas boiler runs continuously. NIBE SPLIT ACVM270 controls the circulation pump.
Alt 2: Condensing gas boiler with internal circulation pump. NIBE SPLIT ACVM270 provides the gas boiler with start
and stop signals.
17Chapter 3 | System descriptionNIBE SPLIT ACVM270
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