I have a valliant turbomax plus controlled combi central heating system, with new double convectors upstairs and older rads downstairs. A couple of the old downstairs ones need replacing (too small for room) and i want to upsize them width wise. Is it possible to do this without draining the system. i will need to extend the existing pipework and take the current rad valves off. i have seen some sort of "vacuum creating" tool to do this somewhere but cant remember or find it. Is it possible? Simon
Upsizing and replacing radiator without draining the system?
- Thread starter simodi
- Start date
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Close the auto air vent on the boiler and only open one end at a time and you should have your vacuum. But remember its under 1bar or so of pressure. But why not drain it? Or freeze it? And you wont want to be trying to solder like it- unless you're very brave. See, I'm a worryer me!!!!!!!!!!
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