Pipework connections
Compress 5800i AW – 6721862724 (2023/06)
16
Fig. 18 Indoor unit connections tap water
[1] Circulation pump for hot tap water PW2 (accessory)
[2] Automatic air vent valve
[3] Flow line to the water heater
[4] Return line from the water heater
5.7 Outdoor unit, indoor unit and heating system filling
NOTICE
The system will be damaged if it is powered up without water.
The system may be damaged if it is powered up without water.
▶ Fill the DHW cylinder and heating system before powering on the
heating system, and establish the correct pressure.
Vent also by other ventilation valves in the heating system, e.g. radiators.
Fill preferably to a higher pressure than the final one so that there is a
margin when the temperature of the heating system rises and the air that
has been dissolved in the water is vented out via the venting valves.
At delivery the default position of the three-way valve VW1 is in middle
position.
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