DIY Doctor

leak in combi boiler

Postby muppet » Sun Nov 11, 2007 10:49 pm

the pressure on my combi boiler drops from 1 to 0 in 2 hours, its been doing this for a while now, does this mean i have a leak? if i do have a leak i have concrete floors how do i find it? could i connect the flow and return pipes from the boiler together and cut the cental heating out all together so that i can use the hot water, or do i need to add the radiators, thanks Geoff
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sun Nov 11, 2007 10:37 pm


Simply Build It

Postby The Heating Doctor » Mon Nov 12, 2007 4:22 pm

could be the expansion vessel is needing replaced.
The Heating Doctor
Rank: Foreman
Progress to next rank:
Posts: 214
Joined: Mon Aug 27, 2007 9:49 am

Postby htg engineer » Mon Nov 12, 2007 6:59 pm

check pressure relief discharge pipe make sure this isn't passing. Also check pressure gauge when heating is on, if on 1.0 when cold should not go any higher that 1.5 - 2.0 bar when hot. If it does it may be a fault with expansion vessel.
htg engineer
Rank: Project Manager
Posts: 3256
Joined: Tue May 22, 2007 5:22 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics