Due to the internal expansions in these cylinder ranges, re-charging the bubble is a requirement. To maximise the bubbles life it should be re-charged as per the following procedure:
1. Turn of cold mains supply to cylinder and open hot taps
2. Drain down water in cylinder to half empty via drain cock not T&P
3. Close the hot taps and drain cock
4. Turn on cold mains water supply fully (this compresses the air)
5. Very slightly turn on a hot tap and leave to let air escape slowly
Note: If this is done too fast the air bubble depletes
6. When water runs from this tap, turn this off and sequentially turn
on other the hot taps slightly to remove all air from hot pipes
Applicable Models:
SCx130i SCx150d SCx175d SCx175sd SCx175si SCx215d SCx215i SCx215sd SCx215Ssi SCx255sd SCx255si SCx305sd SCx305si
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