cold radiator
- Thread starter jezz
- Start date
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If you've bled the radiator and it has not cured it,then it would appear you have a valve problem.
Try having both valves open.
Some thermostatic radiator valves or only designed for the water to flow in a specified direction and some must be fitted on the inlet side of the radiator.If fitted wrong the water flow may be closing the valve
Look at the instructions carefully and see if there is an arrow on the valve and ensure it is fitted correctly.
Why not inform the fitter?
Try having both valves open.
Some thermostatic radiator valves or only designed for the water to flow in a specified direction and some must be fitted on the inlet side of the radiator.If fitted wrong the water flow may be closing the valve
Look at the instructions carefully and see if there is an arrow on the valve and ensure it is fitted correctly.
Why not inform the fitter?
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A new cylinder ?
Oh I see, the existing cylinder does not like the new radiator, so it goes on strike and refuses to allow water into it, but a new cylinder does not know it's a new radiator and allows water in and problem solved.
There ever so clever these cylinders, why did it pick on the new radiator.
I think it's radiator discrimination
Oh I see, the existing cylinder does not like the new radiator, so it goes on strike and refuses to allow water into it, but a new cylinder does not know it's a new radiator and allows water in and problem solved.
There ever so clever these cylinders, why did it pick on the new radiator.
I think it's radiator discrimination
B
breezer
not quite radiator discrimination, i think its because its the new rad on the block
WELL I HAVE TRYED BUT NOT SUCEEDED ! IF I SWITCH OFF ALL THE OTHER RADS IN THE HOUSE , THE COLD ONE HEATS UP ! SOMEONE SAID I NEED BIGGER PIPEWORK 22MM NOT 15MM .. I'M NOT SURE IF I LIKE THESE THERMO VALVES EITHER ! THE PIPE IS RED HOT GOING TO THE NORMAL VALVE AND I PUT THE THERMO VALVE UP FULL AND NOTHING HAPPENS !! ANY MORE SUGGESTIONS ?? PLEASE.
You say, when all the others radiators are off the problem radiator is ok.
I suppose that could rule out a valve problem then.
That must bring us to the pump and I can understand with only one radiator open the pump will be 'man enough' to deal with it.
But what happens when you have 'two' then 'three' then 'four' radiators open, at what point does it begin to fail.
I know pumps are available to cater for heads of '5 metres' and '6 metres' so it could be your pump is not 'man enough' to deal with all the radiators.
Mind you I don't know how many radiators you have or the height that the pump has to push the water up.
Perhaps placing the pump on top speed will make a differance.
You havn't said where the new radiator is fitted, it's not in the attic by chance.
I could understand if the was resistance due to too small diam. pipe but if the pipe at the radiator is hot it does not make sense(well not to me)
I'm still thinking along the lines of a faulty valve, with other radiators closed all the pumps efforts are directed to the one radiator so that little extra pressure could be the difference.
I would still verify if valve is fitted correctly
I suppose that could rule out a valve problem then.
That must bring us to the pump and I can understand with only one radiator open the pump will be 'man enough' to deal with it.
But what happens when you have 'two' then 'three' then 'four' radiators open, at what point does it begin to fail.
I know pumps are available to cater for heads of '5 metres' and '6 metres' so it could be your pump is not 'man enough' to deal with all the radiators.
Mind you I don't know how many radiators you have or the height that the pump has to push the water up.
Perhaps placing the pump on top speed will make a differance.
You havn't said where the new radiator is fitted, it's not in the attic by chance.
I could understand if the was resistance due to too small diam. pipe but if the pipe at the radiator is hot it does not make sense(well not to me)
I'm still thinking along the lines of a faulty valve, with other radiators closed all the pumps efforts are directed to the one radiator so that little extra pressure could be the difference.
I would still verify if valve is fitted correctly
I agree that the thermostatic radiator valves either fitted wrong way round or sticking.If the pin inside the thermostatic is in then the radiator will not work.
Depend what type you've got,you can take the thermostatic head cover off(usually a allen key lock in somewhere) then you will find a pin which operate the valve.Pull it out slighty with a plier without taken it right out (careful not to damage the pin) and clean the pin with WD40 and rags or 00 steel wools,then see if you can move it backward and forward.Don't worry if the pin come out,it will go back in with some diffculty but water will dribble out.The way the thermostat works e.g. high setting pin out,lower setting pin in.Best to get the plumber back in if you're not sure.
Depend what type you've got,you can take the thermostatic head cover off(usually a allen key lock in somewhere) then you will find a pin which operate the valve.Pull it out slighty with a plier without taken it right out (careful not to damage the pin) and clean the pin with WD40 and rags or 00 steel wools,then see if you can move it backward and forward.Don't worry if the pin come out,it will go back in with some diffculty but water will dribble out.The way the thermostat works e.g. high setting pin out,lower setting pin in.Best to get the plumber back in if you're not sure.
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