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Product description
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Compress 7001i/7400i AW AWE – 6721835320 (2021/09)
2.3.2 Generic overview of the refrigerant circuit
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.
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.
AWE
When the heat pump Compress 7001i/7400i AW is connected to the
unit AWE an external DHW cylinder must be connected if the heat pump
is to produce hot water. The change between heat and hot water is then
controlled via an external 3-way valve. The integrated booster heater in
the indoor unit is started if necessary.
Fig. 3 Heat pump Compress 7001i/7400i AW, indoor unit AWE with electric booster heater and external hot water cylinder.
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.
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 e.g. a sofa in front of the radiators
(minimum 50 cm distance). This will block the circulation of the
heated air in the room.
+27 °C
75 %
+35 °C+2 °C –2 °C
0 °C 88 °C
–4,5 °C 50 °C
25 % 100 %
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Others manual(s) of Bosch Compress 7400i AW

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