Heating Problem

[mxd]

Hi,
New to here have read posts simalr but cant get any joy.

I have a common problem Rad's all over the house a hot very hot but the one in my room is warm and only at the top cold at bottom. Its a new Rad not even a year old and its been like this for as long as I can remember.

I had a new Condensing boiler fitted a few years back also.

I have taken it off and put a hose throught it water a bit dirty no sludge.

Noticed the pump is making a whiring sound like a bearing away I can hear it through the other rads but not the one in my room.

Any help would be great its doing my head in.

It had a themo on it its off now.

Thanks
Mike

 

[tincup]

Hi

Try balancing, the FAQ's will walk you through it.

 

[mxd]

Hi,
Thanks just got time to try that out having problems. First I turned on heating and turned off termos on some of the down stairs rad to see if this would push the water to mine.

It made it hot very just like the rest but still cold on the bottom and the return pipe is cold very for the temp of the top of the rad. Its open full.

I have noticed and dont know if this matters that one or 2 of the themos is on the return and not the main pipe. I only now because the what I thought was the main pipe was cold and return was very hot when I turned on rad(themo) it heated from left to right some heat from right to left.

Any other ideas

Thanks
Mike

 

[D_Hailsham]

It made it hot very just like the rest but still cold on the bottom and the return pipe is cold very for the temp of the top of the rad. Its open full.

If it gets hot when the others are shut off, you have a balancing problem.

I assume you mean the thermo valve (TRV) is open full. Have you checked how far the valve at the other end is open? It may be closed too much, which will gave a very large temperature drop across the rad; balancing should sort this out.

See How to balance a CH system

I have noticed and dont know if this matters that one or 2 of the themos is on the return and not the main pipe. I only now because the what I thought was the main pipe was cold and return was very hot when I turned on rad(themo) it heated from left to right some heat from right to left.

Radiators are bi-directional - it doesn't matter which end is flow or return. If the pipe with the TRV is hot, then it must be the flow; the colder pipe will be the return.

Most TRVs are bi-directional (shown by two arrows at right angles on the metal body); these can be put on flow or return. But if your TRV has only one arrow, it must be fitted so the arrow point in the direction of flow - towards rad on the flow, away from rad on the return. This means the head will be vertical one end and horizontal the other.