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No Idea whats wrong

  • Thread starter Thread starter davie a
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No not if they are bi directional that means they can go in either direction, as with most TRV's nowadays
 
these rads can be a pain.
did one last year, they pass water through small holes at the ends of the panel into the top and bottom pipe and can become blocked with krap or air locked.
turn of all other rads and force flow the system through it than bleed.
when all air is out shut of valves then do rest of rads.
run them for an hour, re bleed them, now open up tower rad.
see if that works.
if not take of and try to flush in garden and chack/swop valves. gl.
 
Close off all radiators apart from this tall one. Then turn on heating system so pump moves water round to this radiator and try bleeding. When no air is coming out, close TRV and lockshield for this radiator. Then bleed rest of system after open the valves of the other radiators. Then open valves of this tall radiator.

Lucky it's Christmas because with no thanks I'd have given up responding by now!!!😱😛
 
Just wanting to double check but i switched off rad valves and when i turn on one of the pipes get hot so thats the feed pipe, now on the danfoss page it shows diagram to set ring on trv but my trvs are the other way round. Diagram shows hot feed comming in the right and return on the left with the vavle up and down with the control knob at the top as standard i guess youd say but the arrow is pointing down not up is this an issue ??

If this makes sense,LOL
 
😱Give me a break im new to this just excited im getting help... All you guys advice is great and the Thanks are away,
 
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davie a said:
Just wanting to double check but i switched off rad valves and when i turn on one of the pipes get hot so thats the feed pipe, now on the danfoss page it shows diagram to set ring on trv but my trvs are the other way round. Diagram shows hot feed comming in the right and return on the left with the vavle up and down with the control knob at the top as standard i guess youd say but the arrow is pointing down not up is this an issue ??

If this makes sense,LOL
Click to expand...

Are you able to take a photo and post it?
 
heres the pics as requested,
rad pic feed on right side, return on left.
Flow setting instructions pic
valve showing flow direction which at the mo is pointing down but i think form the instructions it should be pointing up????

IMAG0525.jpgIMAG0523.jpgIMAG0526.jpgIMAG0524.jpg
 
They look like one way TRVs. Is there an arrow of sorts on the valve?

So, about 75 posts ago, were you saying the TRV is on the return? If so and it is a one way TRV then this will be your problem.

If you're not sure which the flow and return is when the heating's turned on from cold, feel which pipe gets warm first. This will be the flow and the TRV should be on this one.

In the meantime if you open it fully (and try the bleeding process above - shutting all other radiators) this will be the best that can be done for the time being.

Then the system will need draining and the TRV and lockshield changing around.
 
Says they are Bi directonal valves with flow selectable feature. Sorry Trvs are on feed pipes i know this because like u said i turned of rad valves, alooed to cool the opened a valve and the one ith the trvs got very hot in seconds. On the pic ith the head removed there is a small arro pointing don and on the otherside of the grey bit there is an arro pointing up. Which doesnt look correct as per the instructions.

thanks all
 
Is the TRV on the pipe that gets hot first? Thats the flow and if the lockshield gets hot first the TRV is on the return. You won't need to swap it to the other side if it's wrong because its got a selector ring on it to choose if it will be on flow or return. Follow your instructions to select which is correct for your setup. The ring would just need spinning round

Edit - spin it round so arrow is pointing up - water coming in to the valve not going out
 
yes trv is on the pipe that gets hot first so that said does it mean the arrow should be pointing the up?
 
If you follow those instructions see how you can change the "arrow" around. Hopefully you don't have to remove the valve and might be able to do it manually. It looks as if that's causing the problem. From memory and what I can see from the instructions in your pic the arrow should point towards the radiator.
 
ok cheers all , one final question promis...whats the problem or problems if the arrow is pointing the wrong way as it seems to be?
 
The valve is designed for the water to flow one way. If the flow isn't good then the heat won't get through properly.

That's a guess though. I've never undone one though so I've no idea what inside.

I've just had a peek at their website and it looks as if you just turn the "setting ring" round 180 degrees then re-fit the plastic head. There's also an explanation of the insides there if you're interested.
 
Hope you sort the problem easily!! Happy Christmas!!!

PS - please keep asking if you still have problems.
 
sorry, been busy modding.

it will be blowing instead of sucking in effect.
 
after a night of trying this is what the results have been.

Bled rads
Shut off all rads via TSV except vertical
Opened and closed valve and locksheild
Bled again
RESULTS are vertical still only heating up at base and still a water noise from rad that can also be heard in boiler if ur next to it..
Thinking of isolating rad and removing plug attaching 1/2 fiting and purging into bucket???? Will this be of benifit??
Any ideas.
 
all new rads and the vertical have same danfoss valves installed by 2 different plumbers and all have arrow on the outside pointing down but it lookes like they should be visa versa according to the install instructions
 
The instructions don't know which way the water is flowing in your system. The arrow pointing down is for when the valve is on the return (last to get hot), pointing up is when the valve is on the flow (first to get hot) from what you said your valve on this rad is on the flow. Just turn the plastic collar with the arrow on by hand to have the arrow pointing up
 
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