Dimplex LA 12PS Purpose of the Heat Pump, Scope of Delivery, Application, Operating Principle

3.1

2Purpose of the Heat Pump

2.1Application

The air-to-water heat pump is designed for use in existing or newly built heating systems.

It is designed exclusively for heating domestic hot water and heating water!

The heat pump is suitable for mono energy and bivalent opera- tion down to an external temperature of -20 °C.

Proper defrosting of the evaporator is guaranteed by maintaining a heating water return flow temperature of more than 13 °C dur- ing continuous operation.

The heat pump is not designed for the increased heat consump- tion required when a building is being dried out. The additional heat consumption should be met using special devices provided by the customer. If a building is to be dried out in autumn or win- ter, we recommend installing an additional heating element (available as an accessory).

ATTENTION!

The device is not suitable for operation with a frequency converter.

2.2Operating Principle

Surrounding air is drawn in by the ventilator and fed via the evap- orator (heat exchanger). The evaporator cools the air, i.e. it ex- tracts heat from it. This extracted heat is then transferred to the working medium (refrigerant) in the evaporator.

The heat is “pumped” to a higher temperature level by increasing its pressure with the aid of electrically driven compressors. It is then transferred to the heating water via the liquifier (heat ex- changer).

Electrical energy is used to raise the temperature of the heat in the environment to a higher level. Because the energy extracted from the air is transferred to the heating water, this type of device is called an air-to-water heat pump.

The air-to-water heat pump consists of the main components evaporator, ventilator and expansion valve, as well as the low- noise compressors, the liquifier and the electrical control system.

At low ambient temperatures, humidity accumulates on the evap- orator in the form of frost reducing the transfer of heat. The evap- orator is defrosted automatically by the heat pump as required. Steam may be emitted from the air outlet depending on the at- mospheric conditions.

3 Scope of Delivery

3.1Basic Device

The heat pump is of compact design and is supplied complete with the components listed below.

R290 (propane) is used as refrigerant.

1)Evaporator

2)Ventilator

3)Switch box

4)Filter dryer

5)Expansion valve

6)Liquifier

7)Compressor

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