1 cold radiator

[jacque]

We have just change from solid fuel heating to oil, 1 downstairs radiator has just stopped working. I have tried to bleed it, when I turn the valve water trickles out along with a noise I have left it open for quite awhile but the noise keeps going as does the water. How long should it be before the noise stops?

 

[2scoops0406]

Is the thermostatic valve / Check valve closed?

 

[jacque]

The valve is open.

 

[2scoops0406]

Both?

 

[jacque]

Sorry I am a bit stupid when it comes to this sort of thing, The radiator has knob on one side that can be opened and closed it is opened, On the other side is a nut??? of sorts???

 

[2scoops0406]

Yeah, usually a square "nut" often covered with a plastic cover, this is the check valve, this needs to be "open" as well, but.... there's always a but, it needs to be open the "correct" amount, without knowing your system, it's impossible to say what the correct amount is..... I think the correct amount dictates a 20% fall in temperature between inlet (thermostatic valve) and check valve, a proper heating engineer will be able to tell you for definite though.

 

[Bahco]

Check valve
It is a locksheild valve and is 'locked' with a spanner after balancing so that it can not be altered inadvertently.
I would try opening it fully to see if that solves your problem as it sounds as though it was working properly prior to the rad removal.
Get the system balanced in the future though for optimum performance.

 

[2scoops0406]

Check valve
It is a locksheild valve and is 'locked' with a spanner after balancing so that it can not be altered inadvertently.
I would try opening it fully to see if that solves your problem as it sounds as though it was working properly prior to the rad removal.
Get the system balanced in the future though for optimum performance.

a proper heating engineer will be able to tell you for definite though.

Lockshield, I knew what "I" meant

 

[2scoops0406]

I've got double check valves on the brain at the moment, I still haven't put my exterior tap in yet, and I'm not looking forward to it

 

[ChrisR]

Jacque - make sure the heating (and pump) is OFF beofore you do any bleeding - otherwise you might well be sucking air IN!

 

[jacque]

Many thanks for the advice I have problem sorted.

 

[2scoops0406]

Go on then, humour us, what was it?

 

[jacque]

I still dont know what it was but what i did, I turned all the other radiators down and left the cold one turned up full and turned the heating on, and hey presto the radiator heated up. Thankfully

 

[2scoops0406]

Cool..... or not as the case may be.