Information On The Heat Pump - Wolf BWL-1S-05 Installation And Operating Instructions Manual

3 Information on the heat pump
Application range
The split air/water heat pump for heating water temperatures up to 55 °C and air temperatures down to -20 °C is
designed exclusively to heat heating water and domestic hot water. The heat pump can be used in new or existing
heating systems, provided the application limits are taken into consideration (see "Specification").
Operating principle of a heat pump
The heat pump converts the low temperature heat contained in the outdoor air into high temperature heat. To achieve
this, air is drawn in by the fan and routed over the evaporator (1).
The evaporator contains liquid heat transfer medium. This boils and evaporates at low temperatures and low
pressures. The required evaporation heat is extracted from the air, which cools down in the process. The air is then
released back into the atmosphere.
The evaporated heat transfer medium is drawn in by a compressor (2) and compressed to a higher pressure. The
compressed, gaseous heat transfer medium is pushed into the condenser (3), where it condenses at high pressure and
high temperature. The condensation heat is transferred to the heating water, causing the water temperature to rise.
The energy transferred to the heating water corresponds to the energy that was previously extracted from the
outdoor air, plus the small amount of electrical energy required for compression.
The pressure in the condenser and upstream of the expansion valve (4) is high. Via the expansion valve, a
temperature-sensitive pressure reduction occurs, causing the pressure and temperature to drop. The cycle then
starts again.
Frost protection
Please
note
The heat pump is automatically protected against frost only when it is switched ON. The use of antifreeze is not
permissible. Risk of water damage and faulty operation through freezing.
Energy efficient use of the heat pump heating system
By choosing a heat pump heating system, you are helping to protect the environment through low emissions and
efficient use of primary energy. To ensure that your new heating system operates at maximum efficiency, please
bear in mind the following points:
Please
note
The heat pump heating system must be carefully sized and installed.
Avoid unnecessarily high flow temperatures. The lower the flow temperature on the heating water side, the
more efficiently the heat pump operates. Ensure that the controller is adjusted correctly.
Intermittent ventilation is preferable. Compared to airing with the windows permanently tilted open, this
method of ventilation reduces energy consumption and saves you money.
Corrosion protection
Do not use (for cleaning, polishing, etc.) or store sprays, solvents, chlorinated cleaning agents, paints, lacquers,
adhesives, salts, etc. on or in the vicinity of the heat pump.
Under unfavourable conditions, these materials may cause corrosion in the heat pump and other heating system
components.
10
Information on the heat pump
3.
Cylinder
4. 2.
1.
Air
Indoor module
Outdoor module
1. Evaporator
2. Compressor
3. Condenser
4. Expansion valve
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