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HEATING SYSTEM CONNECTION
7.10 FILLING THE HEATING SYSTEM
After flushing the heating system the hot water heater
must be filled with water. The heating system is then
filled.
WARNING: The water heater can crack if
filling is performed in the wrong order.
B Fill and pressurise the hot water heater
before the heating system is filled.
Fill the heating system:
1. Open the shut-off valve with non-return valve to fill
the DHW cylinder.
2. Open the valve to fill the system with heating water.
3. Open the air vent valve at the top of the DHW cylinder
to vent the heating system.
4. Also vent via the heat pump air vent valve.
5. Fill the heating system up to the correct pressure. The
standard pressure is 1-2 bar.
6. Shut the heating water filling cock when the correct
pressure is reached.
1
Fig. 20 Connection chamber, internal unit
1
Pressure gauge (0.5-1.5 bar)
20
For latest prices and delivery to your door visit MyTub Ltd - www.mytub.co.uk - info@mytub.co.uk 0844 556 1818
1
Fig. 21 Heat pump
1
Air vent valve
6 720 641 935-07.1I
6 720 641 467 (2010/01)
6 720 616 817-25.1I
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