Danfoss DHP-AQ, Руководство по установке

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In the event of power cuts longer than three minutes, only a 6 kW output will be connected immediately after
power has returned, the remaining output is delayed two hours.
4.2.6 Compressor heater
The compressor heater runs in intervals when the outdoor temperature falls below 10°C. The compressor heater
does not run at the same time as the compressor.
4.3 Principle description
A heat pump utilises the renewable energy from the sun and that is also found in a natural heat source, such as
rock, ground, lakes, ground water or air. The heat pump can be compared to a reversed refrigerator; in a refrigera-
tor heat is transferred from the inside of the refrigerator to the outside, whereas in a heat pump, the solar energy
that is stored in a heat source is transferred to the inside of the house. In both a refrigerator and heat pump the
process is driven by an electrically powered compressor. The heat pump uses the solar energy in the heat source
and gives off two to three times more heat energy than it uses in electrical energy. The heat pump is, therefore, a
very environmentally friendly and economical way of heating a house.
4.4 Heating
The heat pump produces heating (see figure below).
When the compressor (1) receives a start signal the refrigerant is compressed in gas form via the 4 way valve (5) to
the plate heat exchanger (7). The hot refrigerant gives off heat through the plate heat exchanger (7) to the heating
system (8) and transfers to liquid phase. The refrigerant continues through the drying filter (10) and the electronic
expansion valve (11) to the air exchanger (15). In the air exchanger (15) the refrigerant is heated to gas form by the
hotter outdoor air. The gas continues via the 4 way valve (5) back to the compressor (1).
Installation instructions VMGFD102 – 17