Radiator with no bleed nut.

nozzferrahhtoo

Searching this forum for "bleed" gets over 500 results so sorry if this has been asked before.

I bled about 6 radiators in my apartment today here in Germany. They all had the standard nut at the top and I used the key and all went well.

There is one radiator in my childs room however with no such nut. I can post pictures on request. It is just a big hexagon block where the key normally goes.

I googled this a lot and every result I read has people saying "It has to be there somewhere, I have never seen a radiator where it was not there somewhere".

But I have checked back, sides, under, over, every angle I can get at and it simply is not there anywhere.

The only thing I can not figure out is that there is a long screw sticking out of the wall in the middle of the radiator. It goes into the wall and does not appear to touch anything or do anything. It has two nuts on it but again seem to do nothing.

The radiator itself gets hot but only on one side. It is not cold at the top and hot at the bottom like I am used to with radiators. But hot on the whole right side (about 40%) and cold on the left (the other 60%) with no apparent difference between top and bottom.

Any ideas?

TPM

you neet to post up a photo, but it sounds like someone put two blanks into the rad instead of one blank and one bleed screw, if so you will need to fit one with a bleed screw in it

gdavis

if u handy with an adjustable spanner u can very slowly,loosen the hex nut til u hear air ,when u get water ,tighten back up.rad vented. just have towel/tissue in hand and only loosen a small bit.if u are tad nervous u can turn rad off first at both sides and then loosen the blank,then slowly open one side to release air and fill rad

shane0007

Have you checked the back of the radiator either on the left or right? It may have a plastic cover covering the bleed screw itself.

nozzferrahhtoo

It will has me fairly baffled.

This is the radiator itself in situ:

http://www.picpaste.com/IMAG0192-BAKZbCcj.jpg

Here is the heat control on the top right:

http://www.picpaste.com/IMAG0193-bc0sS1m3.jpg

The bottom right:

http://www.picpaste.com/IMAG0194-IbQo1J59.jpg

And here is where you would expect the bleed nut to be at the top left:

http://www.picpaste.com/IMAG0195-ZgfZQ3N6.jpg
http://www.picpaste.com/IMAG0196-QjFLGdHJ.jpg

If that hexagon terminator comes off I sure have not been able to do it and as you might be able to make out ive scratched a load of paint off it trying.

I have looked and felt around every point of the back of it and I find nothing there.

TPM

there should be a bleed screw at one end at the top of the radiator, is there by any chance a blanking plug screwed into the bottom blank?
The rad was either assembled wrong in the first place with no bleed fitted or, assembled for 2 bottom connections but used wiith 2 side connections.

To bleed it you could try turn off the top rad valve, leaving the bottom one open, slowly open the rad top rad valve nut(normally chrome but has white paint on it in your photo) as it opens the air should come out, tighten it once you get water.

you may not get anything at all out with the nut loose if this happens the valve might need a slight nudge to break the seal with the rad, make sure the nut is not fully off before you nudge it

gdavis

id say vent should have went in where blank hex nut is now.Did u try loosening it the "wrong" way ? ie is it a left hand thread,clockwise to loosen?

Chao

TPM wrote: »

To bleed it you could try turn off the top rad valve, leaving the bottom one open, slowly open the rad top rad valve nut(normally chrome but has white paint on it in your photo) as it opens the air should come out, tighten it once you get water.

you may not get anything at all out with the nut loose if this happens the valve might need a slight nudge to break the seal with the rad, make sure the nut is not fully off before you nudge it

This is what I'd do myself.

I'd say there was just never one put on in the first place.

Dtp79

gdavis wrote: »

id say vent should have went in where blank hex nut is now.Did u try loosening it the "wrong" way ? ie is it a left hand thread,clockwise to loosen?

Agree. There usually left hand thread.