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Central Heating - How Do You Turn Off a Radiator?


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Old 20-12-2008, 19:05
Cylinder
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One of the rooms in the house is much too hot.

I don't use the room that often - so I would like to turn the radiator off altogether?

How do I turn it off?
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Old 20-12-2008, 19:11
LCDMAN
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Turn the valves off on each end. (turn clockwise) One of the valve knobs will "grip" and allow you to turn the valve, the other is usually just cosmetic. Use the "useful" one to turn off both ends. If you have a thermostatic valve on one end then turn it right down ("O" or "I").
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Old 20-12-2008, 19:30
Cylinder
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Turn the valves off on each end. (turn clockwise) One of the valve knobs will "grip" and allow you to turn the valve, the other is usually just cosmetic. Use the "useful" one to turn off both ends...

Brilliant thanks.

Just reverse the process if I need to turn it back on, yeah?
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Old 20-12-2008, 19:45
Odyssey2001
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Hang on a sec. As I understand thing, the above post insn't quite accurate. Both ends do something - one end shuts off the radiator whilst the other balances the system. If you turn off the wrong one, it will mess up you entire system.

To check which one to turn off, when you heating goes on, feel the pipe leading to the radiator. The pipe that gets hot first (and will remain the hottest) is the valve to turn down. There is a chance your heating is already out of balance if one room is too hot. I don't understand how it works, I just know that it does.
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Old 20-12-2008, 20:02
LCDMAN
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I was trying to explaining it simply without patronising!

One is the lockshield valve and the other the check valve. One regulates how quickly the water enters the radiator and the other regulates how quickly it leaves.

Regulating how much goes in affects the rest of the system ( by "stealing" all the heat if it is open too much). Regulating how quickly it leaves ultimately dictates how hot the radiator becomes, if the water sits there too long (i.e. slow out) then it cools and isn't replenished quickly enough to keep the radiator usefully hot. Likewise, if it flows through too quickly then the same can happen, it isn't there long enough to give out a useful amount of heat. That is what "balancing" radiators is all about.

Balancing a radiator is about having a consistent temperature difference between the incoming and outgoing pipes all all your rads. When the difference is the same for all your radiators then the system is said to be balanced. Otherwise, the danger is that those radiators nearest the boiler get all the heat and leave non in the system for those furthest away.

If you don't want any heat in that room then by all means turn off the radiator. Make a note of how many turns each valve needs to turn fully off, then you can always turn them back on by the same amount.

Where's seacam when you need him?
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Old 20-12-2008, 20:05
Lurkalot
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you only need to turn off one valve, this will stop the water circulating through the rad.
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Old 21-12-2008, 08:44
seacam
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I was trying to explaining it simply without patronising!

One is the lockshield valve and the other the check valve. One regulates how quickly the water enters the radiator and the other regulates how quickly it leaves.

Regulating how much goes in affects the rest of the system ( by "stealing" all the heat if it is open too much). Regulating how quickly it leaves ultimately dictates how hot the radiator becomes, if the water sits there too long (i.e. slow out) then it cools and isn't replenished quickly enough to keep the radiator usefully hot. Likewise, if it flows through too quickly then the same can happen, it isn't there long enough to give out a useful amount of heat. That is what "balancing" radiators is all about.

Balancing a radiator is about having a consistent temperature difference between the incoming and outgoing pipes all all your rads. When the difference is the same for all your radiators then the system is said to be balanced. Otherwise, the danger is that those radiators nearest the boiler get all the heat and leave non in the system for those furthest away.

If you don't want any heat in that room then by all means turn off the radiator. Make a note of how many turns each valve needs to turn fully off, then you can always turn them back on by the same amount.

Where's seacam when you need him?
You are doing just great LCD!
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Old 21-12-2008, 08:57
crazychris12
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you only need to turn off one valve, this will stop the water circulating through the rad.
My wife and daughter are away so turned off the radiator in my daughter's room. Must have done it right as it's not getting hot now!
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Old 08-01-2009, 14:24
radlady
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I want to turn off the radiator in my bedroom but the thermostatic valve has broken (the top bit that would have turned has sheared off) - is there anything I can do? Obviously the valve needs to be replaced but that needs someone who knows what they're doing/some money..... I was wondering if just me and a spanner can turn it off somehow???
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Old 08-01-2009, 14:42
NIKKID
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So is it also the same for those towel heaters? I think i may have turned both valves (or whatever they are called!!) and now that i want heat back again i cant get it!!
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Old 08-01-2009, 14:45
simonp820
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So is it also the same for those towel heaters? I think i may have turned both valves (or whatever they are called!!) and now that i want heat back again i cant get it!!
Unless it's an electric one!

IIRC only one valve can be turned easily by hand - the other requires a tool of some sort.
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Old 08-01-2009, 14:56
NIKKID
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Unless it's an electric one!

IIRC only one valve can be turned easily by hand - the other requires a tool of some sort.
I think im all the tool that is required!! I took the cover of the easy to turn valve and put on the not so easy to turn valve and guess what - it turned!!
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