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Last seen: Jun 27, 2026
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.
think ill be looking at local people that can do mine when its installed. im quite competent to do it myself but doubt Vaillant would see it that way....
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