Central Heating - change of pipe diameter


Postby misterdun » Tue Sep 02, 2008 8:07 am

Currently in my bathroom the central heating pipes (22mm) run underneath the bath but stick out into the room above the floorboards where I intend to put up a stud wall. The pipes stick out far more than required and want to move them. I am hoping to use pushfit fittings and speedfit flexible piping (15mm) which i have already bought to re-direct the pipes. Will the change in diameter cause problems or should it be okay?
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Postby htg engineer » Tue Sep 02, 2008 10:42 am

What do the pipes feed ? if just one radiator then probably no problems. If it's the flow and return feeding the whole house then it needs to be kept as 22mm.


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Postby misterdun » Tue Sep 02, 2008 3:26 pm

Thanks for the reply. It is the flow and return so looks like I will have to spend a bit more money.
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