cold rad

[Halesowen1]

Again as the previous one, i reckon biggest problem here is the need to balance the system correctly. I bet less than 10% of fitters balance a system correctly or even know how to.

 

[fuzzy]

its often not needed with powerful pumps and well designed systems, but when something like this happeneds its required

 

[067256]

Stupid question.
Shall i open the valves and check for flow with the heating switched off?
Should i get a good flow of water from the flow and return??

 

[067256]

Ok, so i now have taken off the washing machine hose and both valves are closed. HEATING TURNED OFF.
Open wheelshield(flow) lots of water coming out and good flow, no air spluttering. Close wheelshield.
Open Lockshield(return) bleed valve closed.........a trickle of water coming out.....constant but trickling, no air spluttering.
Opened bleed valve aswell...the same result
WHY IS THIS HAPPENING ON THE RETURN??????????

 

[PaulRB]

3 days, still going strong!!
Fingers still crossed.

 

[067256]

Why have i only got a trickle of water coming out of the return pipework?

 

[Gray0689]

You have an airlock or a blockage

 

[PaulRB]

Glad I haven't got microbore!!

 

[fuzzy]

Ok, so i now have taken off the washing machine hose and both valves are closed. HEATING TURNED OFF.
Open wheelshield(flow) lots of water coming out and good flow, no air spluttering. Close wheelshield.
Open Lockshield(return) bleed valve closed.........a trickle of water coming out.....constant but trickling, no air spluttering.
Opened bleed valve aswell...the same result
WHY IS THIS HAPPENING ON THE RETURN??????????

have you tried valve open on return with rad off?

 

[tony diggs 69]

agree with Fuzzy . try changing TRV