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Mend Glow-worm 24CI Combi Pressure Heating

How do I re charge the expansion vessel on my combi boiler?

I want to stop pressure rapidly rising on my glow-worm 24ci combi boiler. How do I re charge the expansion vessel and where do I look for it. If my boiler doesn't have one what can I do to stop the pressure rising? (I don't think my boiler has one!)

L Southgate
March 2007
Glow-wormGlow-worm 24CIHeating, Home Heating SystemsCombi Pressure Heating
water pressure rising all the time even when haeting is off , proably infeed valve in filling loop is turned on some , try closing it more tightly if you can here a hissing noise then its stiil filling up , best to repalce you filling loop consisit of infeed valve, bit flex house
and non return valve.

i would like to know how to recharge the expansion vessel

Abdul Majid
February 2010
the valve should be shut when you have got the pressure up to 1.5 bar

hi-spec plumbing
March 2007
No. I have partially closed the water input valve on the boiler. This has stopped the pressure rising so fast. Is this safe? Do you think this is a problem I can fix myself or should I call an engineer?

L Southgate
March 2007
turn off main stopcock does it rise then

hi-spec plumbing
March 2007
it rises all the time

L Southgate
March 2007
is it rising only when heating on /off

hi-spec plumbing
March 2007

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Glow-worm 24CI Boiler: Pressure Rising - Fix