3 Filling and bleeding
1. Fill the system with cold water by opening the filler valve, that is on the valve pipe, to a pressure of 1 bar.
2. Open all radiator valves fully.
3.
Bleed all radiators.
4. Bleed the outdoor unit. See figure 3.
5. Refill the heating system to a pressure of min. 1 bar.
6. Repeat the procedure until all air has been removed.
7. Check the system for leakage.
The system must be filled with antifreeze protection when the outdoor unit is operating in cooling mode un-
der a set temperature value under (< 15°C ). The reason is to avoid the potential risk of freezing of the outdoor
unit.
Leave all radiator valves fully open.
To bleed the out door unit, remove the lower front hatch and right hand side cover.
Fig. 2: Remove front hatch and side cover
Fig. 3: Bleed the outdoor unit
Commissioning Atec
VIGFG102 Thermia Värmepumpar
8
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