Bedienungsanleitung Dimplex LA 33TPR (Seite 27 von 76) (Deutsch, Englisch, Französisch)

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www.glendimplex.de 452166.66.14 · FD 0008 EN-3

LA 33TPR English

2 Intended use of the heat

pump

2.1 Area of application

The heat pump is suitable for mono energy and bivalent opera-

tion in outside air temperatures to -22°C.

Proper defrosting of the evaporator is guaranteed by maintain-

ing a heating water return temperature of more than 22°C dur-

ing continuous operation. The maximum water outlet tempera-

ture must not exceed 64°C and must be secured 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 con-

sumption required when a building is being dried out. For this

reason, the additional heat consumption should be met using

special devices provided by the customer. For drying out a

building in autumn 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

cooling water outlet temperature is +10°C.

NOTE

ºººº

The device is not suitable for operation with a frequency

converter.

2.2 Operating principle

Heating with the heat source air

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 increas-

ing its pressure with the aid of the electrically driven compres-

sors. 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. Since 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 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

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

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 refriger-

ant is brought to a higher temperature level using the compres-

sor. Heat is transferred to the surrounding air via the liquefier

(which, in heating operation, functions as an evaporator).

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