Purpose Of The Heat Pump; Application; Operating Principle; Scope Of Supply - Dimplex La 6Tu Montage- Und Gebrauchsanweisung

2 Purpose of the heat
pump

2.1 Application

The air-to-water heat pump is to be used exclusively for the heat-
ing of heating water. It can be used in new or already-existing
heating systems.
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 temperature of more than 18 °C during
continuous operation.
The heat pump is not designed for the increased heat consump-
tion required when a building is being dried out. For this reason,
the additional heat consumption should be met using special de-
vices provided by the customer. If a building is to be dried out in
autumn or winter, we recommend installing an additional electric
heating element (available as an accessory).
NOTE
The device is not suitable for operation with a frequency converter.

2.2 Operating principle

Surrounding air is drawn in by the fan and fed through 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 brought to a higher temperature level by increasing
its pressure with the aid of an electrically driven compressor. It is
then transferred to the heating water via the liquefier (heat ex-
changer).
Electrical energy is used to raise the temperature of the heat in
the environment to a higher level. As 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 compressor, the liquefier 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. Uneven
accumulation during this process does not indicate a fault. The
evaporator is defrosted automatically by the heat pump as re-
quired. Steam may be emitted from the air outlet depending on
the atmospheric conditions.
www.dimplex.de
3

Scope of supply

3.1 Basic device

The heat pump is of compact design and the scope of supply in-
cludes the components listed.
The refrigerating circuit is "hermetically sealed". It contains the
Kyoto protocol approved refrigerant R410A with a GWP value of
1975. It is CFC-free, does not deplete ozone and is non-flamma-
ble.
1) Evaporator
2) Ventilator
3) Expansion valve
4) Filter dryer
5) Liquefier
6) Compressors
7) Switch box
3.1
EN-3