Vertical radiator not heating up

Have you tried balancing the other radiators?

ShaunCorbs said:

Have you tried balancing the other radiators?

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Yes the rest of the radiators are working fine. Just the one vertical

seweller51 said:

Yes the rest of the radiators are working fine. Just the one vertical

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I have a similar problem. Have fitted four verticals (1.6m x 0.5m) with two in one room on same run. Can only ever get one of the two hot and if I adjust them the hot one goes cold and the cold one hot!

Am thinking of increasing some of the pipework to 22mm with just 15mm spurs to the actual rads. Would this make any difference?

Dumbplumb said:

I have a similar problem. Have fitted four verticals (1.6m x 0.5m) with two in one room on same run. Can only ever get one of the two hot and if I adjust them the hot one goes cold and the cold one hot!

Am thinking of increasing some of the pipework to 22mm with just 15mm spurs to the actual rads. Would this make any difference?

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What’s the existing pipework ?

ShaunCorbs said:

What’s the existing pipework ?

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Hi, Sorry for delay but decided to draw a plan of layout. From Boiler it's 28mm running into 22mm down centre of property (all on one level). Then into 15mm for feeds to rads. Originally in lounge there was just one radiator behind hall wall. I replaced with two vertical rads the furthest of which is about 8m from 22/15mm transition. Its this run I am thinking of increasing to 22mm.

So the longe two don’t heat up what about the utility one on the same run ?

ShaunCorbs said:

So the longe two don’t heat up what about the utility one on the same run ?

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Only one of the two in the lounge heat up significantly (the other gets mildly warm). The utility one seems to heat up ok but this not a vertical radiator.

Dumbplumb said:

Only one of the two in the lounge heat up significantly (the other gets mildly warm). The utility one seems to heat up ok but this not a vertical radiator.

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So both lounges eg back to back have issues ?

And the flow and return go into the correct port of the rad as it matters on
Verticals

ShaunCorbs said:

So both lounges eg back to back have issues ?

And the flow and return go into the correct port of the rad as it matters on
Verticals

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To be clear, we only have one lounge and it has two vertical radiators. I seem unable to get both radiators to heat up sufficiently. If I close down very slightly the hot one, then it goes just warm and the other radiator which was previously warm gets hot. So never are both at the full level of heat.

Yes they are conected the right way. They had 'in' and 'out' stickers when purchased.

ShaunCorbs said:

Have you tried balancing the other radiators?

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Some of those Verticals Rads Have the Flow and Return are on Different ends Try and find out the make of your Vertical Rad is get on to the manufactures they will tell you what way it has to be piped weather the flow is on the left or the return is on the right the manufactures will tell you this . I have come up with this issue before this is the reason why i would suggest talking to the manufactures . Try and Balance the heating throttle down the Return on all Rads . I would say all the connections to all rads are dropped down from the Attic if its a Bungalow with concreate floors or if you have wooden floors all pipes are under the wooden floor. Some clowns in The Plumbing and Heating Industry use 15mm to service four or possibly five rads this is no good You need 22mm pipe up to the last radiator then the 22mm can be reduced to 15mm to feed the last Rad . Some Plumbers use 20mm Multilayer pipe in place of 22mm copper when in fact they should use 26mm or 25 mm Multilayer Layer pipe . But it is starting to get cold now and you need heat but reading between the lines i would say The flow is were the return should be failing that it could be a flow issue but if you have to knock off all rads to get the vertical rad to heat that is just BS . Get the Contractor back who ever installed your heating it should be under warrantee