DHP-AX – 8
VUBMI102
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A fan draws up the outdoor air through an air heat exchanger, which heats up
the cold refrigerant, which evaporates into a gas. The energy produced during
this process is retrieved from the passing outdoor air.
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The refrigerant that now supplies energy in the form of heat is transferred to the
compressor, which both increases its temperature and pressure.
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The extremely hot refrigerant continues to the condenser. Here, the refrigerant
is cooled and releases its heating energy to the heating system. The refrigerant’s
temperature drops and condenses to a liquid state.
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The heating system transports the heating energy out to the water heater or the
heating system, which indirectly heats the house.
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The refrigerant is then transported through the expansion valve where the pres-
sure and temperature drop and the process starts again.
Components
2.2
DHP-AX is a complete heat pump installation for heating. It can be supplemented
with a water heater and auxiliary heater.
DHP-AX is equipped with a control system, which is controlled via a control panel.
Heat enters the house via a water borne heating system.
The heat pump unit consists of the following basic units:
1 Heat pump unit
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Compressor
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Condenser
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Four way valve
2 Fan
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One speed
3 Air heat exchanger
In addition to these units, there is control
equipment (installed indoors), which controls
the heat pump unit’s component parts (com-
pressor, circulation pumps, auxiliary heaters
and exchange valve) and determines when to
start and stop the pump as well as whether to
produce heat for the house or hot water.
Figure 3: DHP-AX’s main components.
1
2
3
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