Honeywell sundial y plan issue...

[m4rcus]

Hi,

I noticed the other day that the radiators were getting slightly warm in the mornings when the hot water was coming on.

I removed the actuator (note only one screw was holding it in place...)
The valve stem moves. 10-15 deg to the left, 5-10 to the right, when 0 is at right angles to the pipes. When running I did move it to the left and it all started clunking... So I stopped doing that(!)
So is this range of movement expected?
Is it meant to clunk when moved to the left?

Cheers,

M

 

[Dan Robinson]

Yes and yes.

You might well have a bit of crud in the valve preventing the hating from being fully isolated.

 

[m4rcus]

So I might get away with a new plate with ball then... Hmmm

If I leave the stem (without actuator) at the central position what ports are open?

 

[45yearsagasman]

Mid position and both ports are open.