Recent content by landy6

It's going to run a few rads on a small pumped system, heatsink needed in case of power failure.

Hi, just wondering if you need to use a special rad for the purpose of a heat sink-the pipe is 28mm from boiler-how do i get it into the rad without reducing the size to much? Its a 4kw boiler-what size rad do i need? its not used for DHW. thanks

Hi, thinking of doing this same idea myself, any chance of a line diagram to? thanks ian

I'm thinking of fitting a boiler into our stove and connecting it into heating sytem, I was thinking i'd need to fit motorised valves to bypass the combi boiler when it's turned of, and fit another pump to the system that's turned on when the stove is turned on, to circulate the water and bypass...

Its a sealed system, running at 1.5bar cold and about 1.7 hot, i have turned it done in the past but the rads don't seem to put of much heat then, its currnetly running at 3.5 (6 is max) maybe just slogging a dead horse, should maybe just leave it be and just keep filling up with oil more often.

sorry. no he didn't check the flow rate. The flow will be the same for the cold as it is for the hot, theres no difference. The house only has half the rads fitted with thermo valves.

it has a 0.55 nozle fitted so is running at 21.5kw, it also has 16.8 l/min at 66.1'c. If i slow down the pump to give the rads and ufh chance to release the heat will this have i big impact on my hot water? There isn't a bypass fitted on any of the pipes fitted to the boiler-unless there is one...

Its a oil worcester, 18/25, combi condesning. 12month old. ufh doesn't have a seperate pump,, house heat loss is about 14kw, got a big boiler to run shower-and even this struggles if you have it on to fast, thanks

Thanks, any other way then to lower the return temp? even the return from the underfloor heating is as hot as feed and house seems no warmer for it,

Just trying to make my heating system run more efficiently, the heating return temp is only a couple of degres less than the feed, the pump speed is set a 3, can i lower the speed? the system consists of 10 rads and 30m2 unfloor heating.