Energy-Efficient Use Of The Heat Pump; Intended Use Of The Heat Pump; Area Of Application; Operating Principle - Glen Dimplex LSA 60TUR Instructions D'installation Et D'utilisation

1.4 Energy-efficient use of the heat
pump
By operating this heat pump, you are helping to protect the envi-
ronment. A prerequisite for energy-efficient operation is the cor-
rect design of the heat source system and heating system.
To maintain heat pump efficiency, it is particularly important to
keep the temperature difference between the heating water and
heat source to a minimum. For this reason, it is advisable to de-
sign the heat source and heating system very carefully. A tem-
perature increase of approx. one °C increases the power
consumption by around 2.5 %. When designing the heating
system, it should be borne in mind that special consumers such
as domestic hot water preparation should also be taken into con-
sideration and dimensioned for low temperatures. Underfloor
heating systems (panel heating) are optimally suited for heat
pump use on account of the low flow temperatures (30 °C to
40 °C).
It is important to ensure that the heat exchangers are not con-
taminated during operation, as this increases the temperature
difference, which in turn reduces the coefficient of performance
(COP).
When set correctly, the heat pump manager is also an essential
factor in the energy-efficient use of the heat pump. Further infor-
mation can be found in the heat pump manager operating in-
structions.
2 Intended use of the heat
pump

2.1 Area of application

The air/brine-to-water heat pump is to be used exclusively for the
heating and cooling of heating water. It can be used in new or ex-
isting heating systems.
The heat pump is suitable for mono energy and bivalent opera-
tion in outside air temperatures of up to -20 °C. A mixture of
water and frost protection (brine) is used as a heat transfer me-
dium in the heat source system. Borehole heat exchangers,
ground heat collectors or similar systems can be used as the
heat source system.
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. For drying out a building in au-
tumn or winter, it is advisable to install a second heat generator
(e.g. an electric heating element available as an accessory).
In cooling operation, the heat pump is suitable for air tempera-
tures ranging from +10 °C to +45 °C.
It can be used for silent and dynamic cooling. The minimum
water temperature is +7 °C.
NOTE
The device is not suitable for operation with a frequency converter.
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2.2 Operating principle

Heating
Surrounding air is drawn in by the fan and fed through the evap-
orator (heat exchanger). The evaporator cools the air, i.e. 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 the electrically driven compressors. It
is then transferred to the heating water via the liquefier (heat ex-
changer).
Electrical energy is used to raise the temperature level of the
heat from the environment. Because the energy extracted from
the air is transferred to the heating water, this type of device is re-
ferred to as an air-to-water heat pump.
The air-to-water heat pump consists of the main components
evaporator, fan and expansion valve, as well as the low-noise
compressors, 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. Under certain atmospheric conditions, steam may be
emitted from the air outlet.
Cooling
The functions of the evaporator and the liquefier are reversed in
the "Cooling" operating mode.
The heating water transfers its heat to the refrigerant via the liq-
uefier, which is now functioning as an evaporator. The refrigerant
is brought to a higher temperature level using the compressor.
Heat is transferred to the surrounding air via the liquefier (which,
in heating operation, functions as an evaporator).
452167.66.02 · FD 9509
LSA 60TUR
EN-2