4 About your heat pump
4.1 Product description
This heat pump is a heating system for both heating and hot water production, and cooling*. It has a compres-
sor which is customised for heat pumps.
The indoor unit is equipped with control equipment which is presented in a graphic display. The system is also
prepared for monitoring via the internet.
Heating and cooling* is provided to the building via a water-borne heating system. The heat pump supplies as
much of the heat demand as possible before auxiliary heating is engaged to assist.
* Cooling function is for Athena HC only. Athena HC is only available in certain markets.
The heat pump consists of two basic components:
Outdoor unit
The outdoor unit consists of:
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Relay circuit boards (IWS, GW, converter)
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Variable speed EVI scroll compressor controlled by frequency converter
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Compressor oil heater
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Fan
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4-way valve
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Stainless steel heat exchangers (water refrigerant)
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Copper-Aluminum heat exchanger (air refrigerant)
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Electronic expansion valves and pressure transmitters for surveillance of the refrigerant
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Electric immersion heater for space heating and tap water heating
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Electronic flow meter
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Inbuilt drip tray
Indoor unit (control unit)
The indoor unit (CM) controls the components of the heating appliance and keeps track of when the outdoor
unit or indoor unit should start and stop, as well as whether it should produce heating or hot water, or cooling
if applicable.
User Guide
Athena
AWAT01UG0102 Thermia AB
8
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