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We reserve the right to modify technical specifications without prior notice.
UK830500/190402 © Alpha-InnoTec GmbH
Overflow valve
INSPECTING AND SETTING UP THE OVERFLOW VALVE
NOTICE.
Make sure to perform the following steps
within a relatively short time. The heat
pump switches to high-pressure fault if
the maximum return ow temperature is
exceeded.
Make sure that the system is running in the heating
mode (ideally in cold condition)…
With the heating curve set low, switch the system
to “Forced heating”…
Operating manual of the heating and heat pump
regulator.
Shut off valves to heating circuit…
Make sure that the volume flow is channeled 100%
through the overflow valve…
Read the forward flow and return flow temperatures
in the heating and heat pump regulator…
Operating manual of the heating and heat pump
regulator.
Turn the adjusting knob of the overflow valve until
the temperature difference (= spread) between the
forward and return flow is between 5 and 9 K…
1 Adjusting knob
2 Overflow valve
NOTICE.
Turning the adjusting knob:
– clockwise = increases spread.
– counterclockwise = decreases spread.
Open valves to heating circuit.
Reset the heating and heat pump regulator.
Insulating the hydraulic
connections
The vibration decouplers and the pipes of the heat
source must be insulated so that they are sealed against
vapor diffusion.
NOTICE.
Insulate the heating circuit and the heat
source according to local applicable stand-
ards and directives.
Proceed as follows:
Check seals of all hydraulic connections. Conduct
pressure test…
Insulate all connections, angle ball valves, vibration
decouplers, connections and lines of the heat source
in the unit so that they are vapor diffusion-tight.
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