Intended Use Of The Heat Pump; Area Of Application; Damage Due To Use Of An External 4-Way Valve; Operating Principle - Dimplex La 4060Cp Montage- Und Betriebsanleitung

LA 4060CP
3

Intended use of the heat pump

3.1

Area of application

The air-to-water heat pump is to be used exclusively for the heating and cooling of heating water. It can be used in new
or existing heating systems.
The heat pump is designed exclusively for outdoor installation } Installation [6, p. 14] .
The circulating pump(s) must be controlled using the heat pump manager. If pump functions relevant to the overall
functioning or to safety are not supported, e.g. due to integration of the heat pump into a building management system,
this results in the warranty being void and can lead to damage to the heat pump.
The circulating pump(s) and the heat pump controller including the refrigerant gas sensor must always be ready for
operation.
The specifications in the technical documents must be observed, particularly limit values for the minimum and
maximum warm / cold water volume flow.
The heat pump is suitable for mono energy and bivalent operation at an outside air temperatures of up to -22 °C. Proper
defrosting of the evaporator is guaranteed by maintaining a heating water return temperature of more than 18 °C during
continuous operation. The maximum water outlet temperature must °C not exceed 70 with a safeguard on the system
side so that, if the temperature is exceeded, all additional heat sources are switched off safely.
The heat pump is not designed for the increased heat consumption required when a building is being dried out. For this
reason the additional heat consumption should be met using special equipment provided by the customer. For drying
out a building in autumn or winter, it is advisable to install a suitable 2nd heat generator (e.g. an electric heating element
available as an accessory).
In cooling operation, the heat pump is suitable for air temperatures ranging from 10 °C to 45 °C. It can be used for silent
and dynamic cooling. The minimum cooling water outlet temperature is 7 °C.
!
NOTICE

Damage due to use of an external 4-way valve

Use of a 4-way valve to reverse the direction of flow at the plate heat exchanger can cause damage to the device.
▪ Do not use a 4-way valve on the heating water side.
3.2

Operating principle

Heating with air as the heat source
Surrounding air is drawn in by the fan and fed through the evaporator (heat exchanger). The evaporator cools the air, i.e.
extracts heat from it. This extracted heat is then transferred to a working medium (refrigerant) in the evaporator.
The electrically powered compressor raises the temperature level of the heat is by increasing the pressure. It is then
transferred to the heating water via the liquefier (heat exchanger).
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 referred to as an air-to-water heat pump.
The main components of the air-to-water heat pump are the evaporator, fan and expansion valve, as well as the
compressors, the liquefier and the electrical control system.
At low ambient temperatures, humidity accumulates on the evaporator 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 required. Under certain atmospheric conditions, steam may be emitted from the air outlet.
Cooling
The functions of the evaporator and the liquefier are reversed in "Cooling" operating mode. The heating water transfers
its heat to the refrigerant via the liquefier, which in this case functions 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).
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