""mm central Heating pipework run.

f49h · 8 Mar 2006

Hi Everyone.
Well I decided to save a grand and re run my central heating pipe work.
I am using 22mm supply and return and 15mm to radiators.
I want to run a loop system.
Is there any advantage of running the 22mm pipe work in a continuous run ie from left to right (IE U shaped.) Or just using a T piece from where the pipe comes down from the boiler and going left and right.( this is easier for me).
Hope this is as clear as my radiator water, but thats another thread.!!!!
Thanks

JPC · 8 Mar 2006

i dunno want u on about....try again

dal5band · 8 Mar 2006

There's no need for a continous loop of 22mm - in fact you will get a partial short circuit. You run the 22mm to main areas and then go local in 15mm for the radiators. A 15mm flow will support 3-4 radiators. The same for the return.

The single pipe system (what you call loop) is no longer used in domestic.

f49h · 8 Mar 2006

Hi
So it would be ok to branch off from the down pipe and run a single lenth in each direction ( house is split into two sections under the floor) , T ing off 15mm to each radiator.
IE one single length of 25 mm will feed 4 radiator whereas the other length will feed 3 radiators.

fitz1 · 8 Mar 2006

flow out of boiler to one side of radiators, return to other side of radiatos. radiators make the loop .

f49h · 8 Mar 2006

OK Cheers for that

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""mm central Heating pipework run.

f49h

JPC

dal5band

f49h

fitz1

f49h

DIYnot Local

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