110
Fig. 76
Filling the system with the filling function is completed.
The "Build up system pressure" function then starts
automatically.
1. Only for indoor units with 2 integrated heating/cool-
ing circuits:
Open both 3-way ball valves to and from heating/
cooling circuit 2: See Fig. 76.
2. Connect the fill hose to the 3-way ball valve from
the outdoor unit flow (indoor unit heating water
inlet).
3. Open the 3-way ball valve from the outdoor unit
flow (indoor unit heating water inlet) as shown in
Fig. 76: Open in all directions
4. Open the 3-way ball valve to the outdoor unit
return (indoor unit heating water outlet): See
Fig. 76.
5. Allow the heating water to flow in slowly via the fill
hose.
Check the system pressure on the display.
6. As soon as the required system pressure has been
reached, end the process in the commissioning
assistant.
Commissioning, inspection, maintenance
Building up the system pressure
6222080
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