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8
Filling the system
8.1 CH Installation
8.2 Gas supply
20
The CH installation should be filled with potable water. For filling the CH installation, use
the the feed and expansion header tank. Filling is done as follows:
1 Ensure all system and boiler drain points are closed;
2 Open all isolation and motorised valves;
3 Turn on the water supply to the system header tank
4 Vent all radiators, pipework and the primary side of the hot water cylinder;
5 Check system for any visable leaks;
1 Open the gas isolation valve;
2 Purge the gas supply to the boiler ensuring that the boiler location is well ventilated
3 Test the gas supply for soundness as described in BS 6891.
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