Running HW only, disconnect CH system, Combi boiler

[d~ave]

Hi,

First post so sorry if this has been answered elsewhere.

I am planning to have my radiators removed whilst the house is re-plastered / skimmed. I have a microbore single valve radiator system thoughout which means I cannot isolate individal radiators. To remove a radiator I need to drain the whole system. When I do this I will loose the pressure in the boiler, and the use of the hot water (shower / sinks) which is fine for one day, but not the 2 weeks its going to take to the plasters.

Is it possible or safe to keep the pressure in the combi boiler by closing the CH out and return from the boiler (i.e. isolating the CH loop) and just run the hot water system with the CH system disconnected. This could be the case for 2 / 3 weeks before the radiators are re-installed.

If it helps I have a worcester 24i combi and 9x single valve yorkshire radiators.

Thanks for any help and suggestions

Dave

 

[AWheating]

i would create a loop of pipework between the boilers flow and return a couple of meters long and fill back up leaving your iso valves open. your boiler will need to be able to circulate the water in the heating side at a guess.

 

[tamz]

And while you have the rads off swap your valves for trv and lockshield

 

[acecharly]

i would create a loop of pipework between the boilers flow and return a couple of meters long and fill back up leaving your iso valves open. your boiler will need to be able to circulate the water in the heating side at a guess.

Good advice...i installed a boiler in a chinesse takeaway a few years ago where all the guy wanted was hot water at that time until he had bought the flat upstairs. I seem to remember i needed a minimum of 2 meters of pipe of the boiler and a radiator for circulation.

Unless you know what youre doing you will need an engineer. This should not be done in speedfit as a minimum of 1m of copper pipe is required from the boiler.

 

[d~ave]

Thanks for the advice guys.

Luckly I have a 'normal' rad with a drain valve in the system that does not need removing. Will leave the single rad connected with the loop open. All non-required rads are being removed and valves temporarily closed with a 3/4" end fitting. Just hope they go back on as easily as they come off LOL.

Id been quoted 500 to convert my 9 single valves to double valves with TRV etc inc. parts and labour so may have to put that on hold until the cash flow improves.

Thanks again for advice.