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[1]
Return line from the heating system
[2]
Particle filter [SC1]
[3]
Flow line to the heating system
[4]
Drain connection from the safety valve
5.5
Heating system pump (PC1)
Depending on the configuration of the heating system, a heating pump is
needed that is selected depending on the flow and pressure drop
requirements.
PC1 must always be connected to the indoor unit as per the wiring
diagram.
Maximum load relay output for pump PC1: 6A cos>0.4. If the load is
higher, install an intermediate relay.
5.6
Connect the indoor unit to hot 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). Check the documentation
supplied with the DHW cylinder for connection instructions.
To avoid collection of air an automatic air vent valve must be installed on
the flow line at the inlet to the DHW cylinder (not included in the scope of
delivery).
▶ Install the pressure relief valve and cold water valve with a non-return
valve for tap DHW.
▶ Connect cold water in to the water heater.
▶ Run the leakage drain water line from the pressure relief valve to a
frost protected outlet.
▶ Connect hot water out from the water heater.
▶ Connect optional circulation pump for domestic hot tap water
(accessory).
▶ Connect the return line [4] with valve VC4 from the water heater.
▶ Connect the flow line [3] with automatic air vent valve [2] to the
water heater.
Compress 5800i AW – 6721862724 (2023/06)
▶ The domestic tap water system must be protected from pollution at
the installation.
Pipework connections
15
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