central heating lost pressure

gazza975526570

Hi

Ive beld the radiators - forgetting this would result in lost pressure - not i have no heating instead of a few cooler rads!!

Can anyone in simple terms explain how i recharge the system - ive got the key just cant remember what to do with it?!

Thanks

I should add its a worcester bosch greenstar 24i

onejontwo

If you go to the boiler you will see a braided pipe with a small slotted screw head turn this 90 degrees to allow water into the boiler, only do this for a few seconds at a time to build up the pressure slowly. When the pressure gauge needle rises run the heating and top this up to approx 1 bar.

gazza975526570

Ok - found where the key goes in and have unlocked it

Seem to remember there is another plastic knob to the side off this which you are meant to turn to increase the pressure - when i do this though water just comes out of it?

onejontwo

Oh dear , it seems you have a more complicated way of topping up than I do, you'd best wait until someone more qualified comes along. Good luck!

Plumbers_Shop_Lee

Good Evening
you can find the installation and user instructions for the worcester filling link assembly by clicking here

Hope this helps

gazza975526570

Thank you!

I carried on witht he water dripping out and it started charging is now back where it was and heating working again.

Are you not meant to bleed rads with a combi then or is it just you then have to recharge the system after?

Edit - one last thing its now about 1.5 bar as opposed to 1 before (so the mrs tells me) - is this ok?

Plumbers_Shop_Lee

With any type of system you need to bleed the air from it but with a combi system which is whats known as a sealed system you have to top the water up manually after bleeding

gazza975526570

Cheers, you have been very helpfull- the point about pressure being higher than before?

Plumbers_Shop_Lee

1.5 bar shouldn't cause a major problem the pressure will increase further when the sytem gets hot obviously because hot water will expand so long as it doesn't climb too much over two bar you will be fine, even if it does there is a sfatey device on the boiler which will dischagre some of the water if it goes above three bar & if this happens you may need to top the water up again

Regards
Lee