did not get round to doing that. the flue that is on the boiler now. measures just over 5" inside and just under 6" o/s i need to order another meter of flue for boilers new home
thanks that has answered my question really well.
I should not need a S R tank because the cylinder will be in the bathroom and it is above the kitchen so should not need to be pumped
thanks again
I am about to buy a copper cylinder for my farm house
I am going for an indirect cylinder 1200x450 but just as i had found the best price i noticed some of the cylinders had s r (secondary return ) written in the description can anyone tell me what the difference is please and which one do i...