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very high pressure on ravenheat condensing boiler?

i topped up water pressure on my ravenheat condensing boiler and it kept rising up to 3.5 and wont come down any answers novice

rob
March 2010

Ravenheat Heating, Home Heating Systems Ravenheat Condensing Boiler

loose some excess water out through a rad bleed point till the pressure comes down to about 1.5 bar, check the filler loop if 100% off, better to disconnect it, now turn boiler C/H on, pressure should slowly rise to around the 2 bar mark and sit there quite happily all day long if it rises towards 3 bar suspect the expansion vessel ,or heat exchanger problem

wirecutterman
March 2010

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