How long an my 15mm (T off from 22mm feed/return) be to RAD

[EBrant]

Hello

Can someone please help me with the following questions

I am working out the pipe runs for my new central heating system (combi boiler, 4bed house)

I worked out a good root to minimize the holes I have to drill trough the joists, whilst allowing all rads to T off the main 22mm feed/return (apart from the last rad of course)

So rather than running the 22mm pipe further around the house I could use longer T offs e.g. the 15 mm pipe runs (one pair per one rad) would have to be several meters long in places. Does this present a problem e.g. is it better to get the 22mm run as close to each rad as possible? again all rads will T directly off the 22mm.

Thanks
EBrant

 

[ShaunCorbs]

22mm as close a practical (within one length of 15mm i try and get)

 

[Unregistered]

thanks for the reply so ideally should get the 22mm with in 3m, thanks for the info

 

[ShaunCorbs]

thanks for the reply so ideally should get the 22mm with in 3m, thanks for the info

yea if not dont worrie get it as close as possible