Hydraulic connections
19
Compress 5800i AW – 6721858460 (2023/06)
Fig. 22 Indoor unit connections to the heating system
[1] Heating system return line
[2] Heating system flow line
[*] It is mandatory to install a non-return valve to use the cooling
mode (see required accessories chapter in 2.8.1).
Fig. 23 Indoor unit backside
[1] Drain hose
5.5 Connect the indoor unit to the tap water
WARNING
Risk of system damage
If the function of the pressure-relief valve cannot be guaranteed,
excessive pressure occurs in the system.
▶ WARNING – Make sure that the pressure relief valve outlet is never
plugged or shut off.
WARNING
Risk of scalding!
If the installation requires DHW temperatures >65 °C (i.e for solar
thermal systems, combination with wood boilers or similar), a
temperature mixing device must be installed.
The pressure relief valve, the non-return valve for incoming cold water,
the fill valve and the DHW mixer must be installed in the tap water circuit
(not included in the scope of delivery).
▶ Install the pressure relief valve and cold water valve (VW3) with a
non-return valve for tap DHW.
▶ Pull the leakage drain water line from the pressure relief valve to a
frost protected outlet.
▶ Connect optional pump for domestic hot tap water (accessory).
▶ Connect domestic hot water out [1].
▶ Connect cold water in [2].
▶ The domestic tap water system must be protected from pollution at
the installation
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0010038735-005
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0010049184-001
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