DIY Doctor

Main navigation

Added rad refusing to heat up

Postby coully123 » Wed Dec 10, 2008 9:52 pm

I tee'd into 15mm pipework below the flow and return valves of an existing rad. Because the new rad was to be located in a porch and working space was limited I used 10mm pipe. New rad refuses to give off any heat but I note the following: (1) the rad bleeds ok. (2) When I remove the rad I note that the flow out of the thermostatic valve is appreciably less than the flow on the return side. (3) I have flushed the rad. (4) If I shut down the nearest rad the new rad warms slightly but not to any degree. I would appreciate the views of an expert who can point out where I have gone wrong and perhaps more importantly how I can get the rad on my side.
Rank: Labourer
Progress to next rank:
Posts: 4
Joined: Wed Dec 10, 2008 9:05 pm


Simply Build It

Postby plumbbob » Thu Dec 11, 2008 12:14 am

You must balance the system to forced water into the new rad. Because you have used 10mm pipe, the pressure it the whole system flow needs to be increased.

check projects section:
Rank: Project Manager
Posts: 1891
Joined: Wed May 07, 2008 9:59 pm

Postby Steve the gas » Thu Dec 11, 2008 5:38 am

Steve the gas
Rank: Site Agent
Progress to next rank:
Posts: 780
Joined: Sun May 04, 2008 7:07 am

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