underfloor heating advice

[cdodds2004]

fitting some underfloor heating in my new extension at home and have had a myson single room pack.

Room is approx 5m x4m

Do I need a 22m feed to the pump or will I get away with tapping into 15mm feeds I have which is currently feeding 1x bedroom radiator?

any advice appreciated

 

[joni os]

Go for 22mm. UFH pipe needs to be at 100mm c/c to achieve 100w/m2 and that approx. 200 metres of pipework.

 

[Chalked]

Put in 22mm.
Same work, but little extra cost in materials.

 

[cdodds2004]

ok that makes things a little awkward for me. ill find a way lol.

 

[ShaunCorbs]

ok that makes things a little awkward for me. ill find a way lol.

You could always do it in 28mm to keep if fun

 

[cdodds2004]

to be fair can totally run it through 2x cupboards to get it from airing cupboard in 22mm im just being lazy as I have 15 supply just above it!

 

[cdodds2004]

the manifold connections are only 15mm to be fair mind

 

[Chalked]

the manifold connections are only 15mm to be fair mind

So is a gas connection on a 28 kW boiler. But as we know it won't be piped in 15mm :asshole: :santa3: