home Fix label Heating label_important Home Heating Systems category Glow-worm

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

home Fix label Heating label_important Home Heating Systems category Glow-wormdone

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

link Click here to see other fixes for Glow-worm 24CI.