I'm going to replace a radiator and I have a feeling that it's possible to take off the old one without draining the system down. I'm not sure quite what order to do things in to avoid disaster though. I thought I would:
- Turn off the CH, but leave the boiler on for hot water
- Turn off a valve on each radiator to keep their water in in case I get things wrong
- Turn off both the valve and the lockshield on the rad I'm going to remove
- Undo the pipe from one valve first, cut it a couple of inches further down and put a pushfit stopend on it
- Do the same to the pipe on the other side
- Take the rad off the wall
- Carry on using the CH until I get round to fitting the new rad
Is that going to work or will I flood the folks downstairs/break the boiler?
Turn off both valve to the radiator you want to change, remove radiator (there'll still be water in the radiator) you can still use heating and water. I the pipe need cutting then you need to drain the system.
You cannot use the hot water with the system drained, as it will damage the combi boiler.
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