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2.3.2
Generic overview of the refrigerant circuit
75 %
+2 °C
–2 °C
1
Fig. 2
Functional principle of the refrigerant circuit in the heat pump
[1]
Evaporator
[2]
Compressor
[3]
Condenser
[4]
Expansion valve
2.4
Indoor unit
The task of the indoor unit is to distribute the heat from the heat pump to
the heating system and the hot water cylinder. The circulation pump in
the indoor unit module is RPM controlled, and will automatically
decrease in speed when demand is low. This decreases energy
consumption. When the heating demand is higher during cold outdoor
temperatures, an additional heat source - a booster - may be required.
Fig. 3
Heat pump Compress 7000 AW, indoor unit AWM / AWMS with integrated DHW cylinder and booster heater
2.5
Hints on energy saving
• Use the normal heating mode, thus the heating system will use the
least energy. Set the desired room temperature according to your
personal comfort needs.
• Open the thermostatic vents fully in all rooms. Increase the
temperature setting on the control only when the desired room
temperature has not been reached for some time. Close the
thermostatic valve in a specific room, only if that room is warmer then
the others.
Compress 7000 AWM/AWMS 5-17 – 6721830635 (2021/02)
0 °C
–4,5 °C
25 %
2
88 °C
4
This booster heater is integrated, an its on/off is controlled by the user
interface in the indoor unit. Please note that when the heat pump is
running, the booster heater will only provide the heating output that the
heat pump cannot produce itself. When the heat pump is able to provide
all the heating needed, the booster is automatically turned off.
AWM / AWMS
Heat pump Compress 7000 AW connected with the indoor unit AWM or
AWMS provides a complete installation for both heating and domestic
hot water, since the indoor unit contains a DHW cylinder. Switching
between heating and DHW is managed by an internal 3-way valve. The
integrated booster heater in the indoor unit will turn on if needed.
• If there is a room controller installed, this can be used to set the
optimal room temperature. Avoid influence of external heating (i.e
sunlight or wood stove). Otherwise unwanted fluctuations in the
room temperature may occur.
• Avoid placing big objects i.e a sofa in front of the radiators (minimum
50 cm distance). This will block the circulation of the heated air in the
room.
• Do not set a too low temperature for cooling. Cooling will also
consume energy.
Product description
100 %
+27 °C
+35 °C
3
50 °C
5
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