central heating installation

13 Jul 2003
Reaction score
United Kingdom
I am a fairly competant d.i.yer looking to install gas central heating in a two bedroom house. To keep costs low I plan to install all the radiators myself and have a plumber install a Baxi 105e instant boiler.
I am unsure about the radiator circuit. Do I run 22mm copper pipe from the boiler then reduce to 15mm to all the radiators then stop the supply / or rig a 22mm circuit offtaking 15mm to the rads then returning to a 22 mm pipe back to the boiler . My problem is do I Make a circuit or feed only to the rads then return from the rads back to the boiler
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i am not a plumber or heating engineer, all radiators are usually in 15mm and plumbed in paralell (so if you take one off the others still work) see this for more information
hi slap,

when I did my boiler use 22mm retrun and flow and then take 15mm pipes to radiators.

if you need anymore help about flow, reply or drop me a mail.

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perhaps he would if your email address was in your profile, but it isnt

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