No of radiators with Sime 80 Boiler?

The boiler is capable of 80,000 BTU's (hence 80 in title).

Each radiator of 1200x600 "uses" around the following BTU capacity based on whether they are single, finned double etc.

3800 - Single
5500 - Single with Fins or double with no fins.
7100 - Double with Fins

Add up your radiator sizing and then deduct this from the 80k your boiler is capable of. I don't know the boiler, but if it is NOT a combi, then you need to allow 10-15K for your hot water. If its a combi, then you don't need to make an allowance for the water.

I would guess your answer is yes, no problems!

Pete K
January 2006