Heating does not work in one room

ChasingtheWelshdream

Mutton_Geoff wrote: »

And if this works, look at balancing the system. I bet the cold radiator is furthest from the boiler (in pipe run/resistance terms).


By closing down radiators to restrict flow on the ones nearest the boiler, you free up more capacity for the water to get to the further ones. Most plumbers only understand the basic concept of balancing but basically you want a 10-12C temperature drop across each radiator to allow maximum efficiency (and lower bills). Radiators that are close to the boiler but wound fully open tend to "hog" the water, returning it to the boiler at too high a temperature, not having dissipated the energy into your house instead and causing the boiler to cycle more frequently.


http://www.diydoctor.org.uk/projects/balancingcentralheatingsystems.htm


https://www.boilerguide.co.uk/balance-radiators


It is very time consuming (adjusting one radiator throws all the others out) which is why most plumbers don't bother, but the end result is worth it. I found my bills reduced and my house was warmer after carrying out balancing.

Ooh thank you for the explanation. Yes, our radiator was one of the furthest away from the boiler. Ours is an old, cold house so anything we can do to lower bills is worth a shot. Time we have - money, not so much! :rotfl:

ChasingtheWelshdream

Mutton_Geoff wrote: »

Radiators that are close to the boiler but wound fully open tend to "hog" the water, returning it to the boiler at too high a temperature, not having dissipated the energy into your house instead and causing the boiler to cycle more frequently.

Without meaning to hijack too much (and it might help the OP too), is there an easy way to determine the 'order' of radiators, without lifting floorboards? Our boiler is on the middle of three floors, so I'm guessing the flow starts on one floor before moving to the others in turn? Or is that too simplistic?:o

DaftyDuck

Simplest way... Turn system off and wait to cool. When cold, turn on, and run round, testing each radiator for warmth... Which gets warm first, and which last...it's best if you feel the pipe feeding in (normally trv end, but not always) rather than radiator.

It's likely that several will, in effect, be in parallel, rather all in series. Water doesn't flow into one radiator then out, then on to the next radiator. There will be a feeder pipe to all and, in your case, that will split near the boiler, flow up AND down, not up then down...

ChasingtheWelshdream

DaftyDuck wrote: »

Simplest way... Turn system off and wait to cool. When cold, turn on, and run round, testing each radiator for warmth... Which gets warm first, and which last...it's best if you feel the pipe feeding in (normally trv end, but not always) rather than radiator.

It's likely that several will, in effect, be in parallel, rather all in series. Water doesn't flow into one radiator then out, then on to the next radiator. There will be a feeder pipe to all and, in your case, that will split near the boiler, flow up AND down, not up then down...

Thank you, that's very helpful. I see a lot of exercise running up and down stairs coming on! :rotfl:

G_M

paulandjanine wrote: »

Thank you, that's very helpful. I see a lot of exercise running up and down stairs coming on! :rotfl:

which means you won't actually need the heating on. Just keep running.........