Purpose Of The Heat Pump; Application; Operating Principle; Scope Of Supply - Dimplex LIKI 14TE Instructions D'installation Et D'utilisation

2 Purpose of the Heat
Pump

2.1 Application

The air-to-water heat pump is designed for use in existing or
newly built heating systems.
It is designed exclusively for heating water!
The heat pump is suitable for mono-energy operation down to an
external temperature of - 25 °C.
Proper defrosting of the evaporator is guaranteed by maintaining
a heating water return flow temperatureof more than 18 °C du-
ring 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. The LIKI 14TE is equipped with an electric im-
mersion heater as standard, which if neccessary can be used to
supplement the heating and provide the additional heat required
when a building is being dried out.
ATTENTION!
The device is not suitable for operation with a frequency converter.

2.2 Operating Principle

Outside air is drawn in by the ventilator and fed via the evapora-
tor (heat exchanger). The evaporator cools the air, i.e. it extracts
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 an electrically driven compressor. It is
then transferred to the heating water using the liquefier (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 compressor, liquefier and electrical control system.
At low ambient temperatures, humidity accumulates on the eva-
porator in the form of frost, reducing the transfer of heat. 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.
3

Scope of supply

3.1 Basic device

The compact heat pump is supplied complete with all of the im-
portant components of the heating circulation system:
Expansion vessel
Heat circulating pump
Dual differential pressureless manifold and safety compo-
nents (pressure relief valve, pressure gauge)
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All manuals and user guides at all-guides.com
1) Evaporator
2) Ventilator
3) Expansion vessel (24 l)
4)

Switch box

5) Liquefier
6) Compressor
7) Water circuit pressure gauge
8) Internal heat circulating pump (in generator circuit)
9) Buffer tank 120 l
10) Dual differential pressureless manifold
11) Expansion valve
12) Immersion heater
The refrigerant circuit is "hermetically sealed". It contains the
Kyoto protocol approved refrigerant R417A with a GWP value of
1950. It is CFC-free, does not deplete ozone and is non-flam-
mable.
3.2 Switch box
The switch box is located in the heat pump. It can be accessed
by removing the lower front cover.
The switch box contains the supply connection terminals, as well
the power contactors, soft starter unit and heat pump manager.
The heat pump manager is a convenient electronic regulation
and control device. It controls and monitors the entire heating
system on the basis of the external temperature, including dome-
stic hot water preparation and safety systems.
The customer must install the external temperature sensor,
which is included in the scope of supply of the heat pump control-
ler together with the necessary fixing accessories.
The enclosed operating instructions describe the function and
use of the heat pump manager.
3.2
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