Fan convectors - heating and cooling
Function
The heat pump prioritises hot water charging. The
compressor output is adjusted according to the outdoor
temperature. The charge pump varies the flow to main-
tain a high charge temperature.
When the water heater is full, the valves QM30 and
QM31 switch to the climate system. The heat pump is
then controlled by a calculated set point value on the
supply line. The compressor varies the output according
to the demand. The charge pump runs at a fixed set
speed.
If the compressor does not manage the entire heat de-
mand, the addition is connected and the heat shunted
out on the flow line.
In the event of a cooling demand, the heat pump is
controlled by a calculated set point value on the flow
line. The compressor varies the output according to the
demand. The charge pump runs at a fixed set speed.
Heating mode
ClosedQM30
OpenQM31
Active during balance point (A)QN11
Hot water mode
OpenQM30
ClosedQM31
Open (AB)QN11
Cooling mode
ClosedQM30
OpenQM31
Open (AB)QN11
Installation requirements
See page 7.
11Chapter 3 | System descriptionNIBE SPLIT ACVM270
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