Hi, I've just installed condensing boiler (120,000BTU) and the radiator BTU is 55,000 (all radiators). Is this much BTU enough for 7 radiators? Is so then I am having some dificulty in finding the fault. Some radiators after being hot, turn cold even if the heating is on. I have tried to temper with the pressure - NO LUCK. If anyone can please kindly advice I would be grateful. Thanks.
2006-11-18 08:12:19 · 6 answers · asked by Anonymous in Home & Garden ➔ Maintenance & Repairs
If they all get hot at start up, and then some get cold then I dont think bleeding will help! as there is obviously water in them. Do they all have thermostatic valves fitted, is the flow through the valves in the right direction, i.e. does the valve end of EVERY rad get hot first?? Are all valve heads facing horizontal or vertical?? Are they set at the same setting. Understand that these valves will close down when the anbient temperature reaches the set point and the rad. will then cool, untill the anbient cools, at which point the valve will open again. So if one area warmed up quicker than the rest the rad. temp. would reduce. However you say 'cold' not just 'cooler'. The boiler output is certainly more than enough for the load, in fact it may never reach condensing mode!
2006-11-19 01:29:29 · answer #1 · answered by jayktee96 7 · 0⤊ 0⤋
The installer should have bled the system then "Balanced" the radiators so that they give out sufficient heat before the thermostat on the radiator cuts in. There are lots of fairly easy things to try if you are at all handy with plumbing. If not get the installer back!
2006-11-18 08:28:35 · answer #2 · answered by Anonymous · 1⤊ 1⤋
Is it possible that the radiators have individual thermostats you are missing?
Bleeding can't be the problem or the radiators would not get hot at all or else would heat low down but not higher up.
2006-11-18 09:01:53 · answer #3 · answered by Shauna 2 · 0⤊ 1⤋
try bleeding the radiators. there should be a bleeder valve on the side of all of them or near then at the high point where it connects. open the valve slowly until water comes out. then you know you got rid of any air in that radiator or line.
also find the highest point on the supply line and see if there is a bleeder there. if so open that valve to get any air out of the line. air will always go to the top of any system until it gets trapped like in a radiator.
2006-11-18 08:20:36 · answer #4 · answered by george 2 6 · 0⤊ 2⤋
If you had a reputable dealer put in your system there should be no real problems. Have you tried burping your radiators?
2006-11-18 08:15:28 · answer #5 · answered by Kelly L 5 · 0⤊ 1⤋
My thought was the same as Lally's....that maybe your radiators need to be bled (although usually they won't heat at all if that is the case)
2006-11-18 08:17:37 · answer #6 · answered by Schleppy 5 · 0⤊ 2⤋