New radiator in loft causing problems

[jase158]

Towel radiator in bathroom has no Trv all other rads have TRV.

So are you staying tighten the white lock shield in the pic?

yes, if this doesn't work then definetly going through rad, is the top of the radiator below the bottom of the f and e tank?

 

[Best]

Towel radiator in bathroom has no Trv all other rads have TRV.

So are you staying tighten the white lock shield in the pic?

It's not a lockshield valve, I think. It looks like a wheel head Peglers terrier rad valve & as 1King55 has said, maybe a bypass.
I wouldn't turn it off, - get a heating guy to fix everything.

 

[Stevemarch1969]

yes, if this doesn't work then definetly going through rad, is the top of the radiator below the bottom of the f and e tank?

Just trying it now.

tanks are approx 1m above top of rad

 

[jase158]

It's not a lockshield valve, I think. It looks like a wheel head Peglers terrier rad valve & as 1King55 has said, maybe a bypass.
I wouldn't turn it off, - get a heating guy to fix everything.

And the difference between a lockshield valve and wheelhead valve are? definetly not a bypass valve.

 

[Best]

And the difference between a lockshield valve and wheelhead valve are? definetly not a bypass valve.

Same valve, except a lockshield valve has a lockshield head
& a wheel head valve has a wheel head! :smile:
And yes, it definitely is not a proper bypass valve, but possibly used as a permanently bypassing valve & therefore wrong.

 

[Stevemarch1969]

I have tightened the valve with the white knob and put heating only on.

This valve sits on top of the tee the plumber has fitted into the cylinder return.

I assume this is similar to the suggestion earlier of a flow from before the 3 port so if this is open as it was surely its a flow?

 

[jase158]

I was being sarcastic, they are the same thing and so your post no. 52 makes no sense. There is no need for it as 3 port valves close to hot water so always have a circuit, there is no completely shut on 3 port valves. so even if it is a bypass valve it isn't needed!

 

[jase158]

I have tightened the valve with the white knob and put heating only on.

This valve sits on top of the tee the plumber has fitted into the cylinder return.

I assume this is similar to the suggestion earlier of a flow from before the 3 port so if this is open as it was surely its a flow?

you want hot water on only to see if rads get hot when hot water only is on, don't you?

 

[jase158]

I assume this is similar to the suggestion earlier of a flow from before the 3 port so if this is open as it was surely its a flow?

exactly, this is the issue, surprising that you didn't have this problem before though!!

 

[Stevemarch1969]

you want hot water on only to see if rads get hot when hot water only is on, don't you?

Yes just trying that now.

with ch on only all ok but no heat to loft rad. Part of pipe warm where first teed in but doesn't travel to the rad.

cylinder return is now cool since white valve shut. Was red hot all the time before..