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Last seen: Sep 11, 2026
red is 28mm orange is 22mm.
this is a rough diagram of the pipe runs, beyond the 28/22mm runs it drops to 15mm to rads. for scale the Kitchen is about 5.3m x 3.2m.
my worry is most of the 28mm and 22mm runs are in the kitchen ceiling so quite a bit of heat is going into the corner of the house where we dont sit m...
not sure if i should insulate the 28mm flow and return that goes to the radiator circuits. they are quite a long 8m approx. L shape run with other rad...
jees ive got 2 hopes of heating my bathroom then. someone suggested an standard design aluminium rad, instead of a towel rad, but im worried in a copp...
@gary so does that mean at a dt of 50 the actual flow is 70c for a 20c room temp?
so why dont sites list the output based on flow temp? cause most seem to use dt.
what about galvanic corrosion as i have copper pipes and other steel rads.
im thinking of going for the taller one and letting the heat from the plant room plus the flow/return 28mm and the primary 28mm's that are in the ceil...
both are delta T50 apparently, one is recalculated from a higher flow temp to be more realistic it says on the site.
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