Specifications

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6720649497 SM HP270-1 2012/09 en
1.1 General description
This model of domestic hot water heat pump provides hot water for residential purposes, using a closed refrigerant
unit filled with a refrigerant gas (R134a). This ensures the energy production taking out the energy from a cold
source - air, and delivering this energy to a secondary circuit – water - where a simple circulation pump, ensures
water movement through a heat exchanger, heating the water stored in a tank.
(a) (b)
Pict.1 (a) Refrigeration Unit and (b) Storage Tank (with coil)
The engine absorbs energy “Qc” from a cold source (heat absorbed from air) and expels energy “Qh” to a hot
destination (heat delivered to water) while Work “W” is done in the refrigerator circuit (electrical supply). The work
done is ensured by an electrical plug that supplies electricity to the compressor and the movement of the refrigerant
gas R134a ensures the transport of the energy from “Qc” to “Qh”.
Pict.2 – Heat Pump close circuit representation
Compressor
(W)
Heat sink
(Qh)
Condens
er
Evaporator
Heat source
(Qc)
Expansion
Valve
Flow
direction