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- 19 Mar 2009
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WB Combi boiler about 5 years old.
All new rads installed as part of rennovation installed (4 downstairs, 4 upstairs, - all modern designer ones, 3 of which are the tall column rads)
1960s 3 bed house with copper piping
Install finished about 3 months ago, all was working ok, no issues and was using CH and HW without issue.
About a month ago plumber came back to finish off and put inhibitor in system.
Fast forward to a few weeks ago and noticed the pressure relief valve was leaking water, (I may have had the CH on a few times for 30 minutes in the prior 2 weeks).
Pressure was 3 Bar
Bleed all rads and pressure dropped to 1.5 bar (lots of air from all rads, downstairs and up, most from the tall one upstairs)
One of the rads bled out black water slightly sludgy, others were clear.
Tried CH, 3 downstaris and 2 upstairs rads were very noisy (like awaterfall), also they were not heating up at all on one side - seemed to be the lock shield side)
Tried opening/closing lock shields - no difference
Currently;
boiler pressure slowly builds over 4-5 days and when I re bleed rads it drops again.
This happens even though I am not using CH - (i am using boiler by virtue of hot water)
rads still noisy and not heating up
I cant see any signs on any leaks (gutted if it is just finshed all florring and decoration etc)
Could the inhibitor have rleased some of the latent corrison / sludge (it could be a coincidence that problems reared after the inhibitor was put in)
Any other ideas appreciated - waiting for plumber to come back but hes avoiding me for now
Im a diy numpty, just been gogling until now.
All new rads installed as part of rennovation installed (4 downstairs, 4 upstairs, - all modern designer ones, 3 of which are the tall column rads)
1960s 3 bed house with copper piping
Install finished about 3 months ago, all was working ok, no issues and was using CH and HW without issue.
About a month ago plumber came back to finish off and put inhibitor in system.
Fast forward to a few weeks ago and noticed the pressure relief valve was leaking water, (I may have had the CH on a few times for 30 minutes in the prior 2 weeks).
Pressure was 3 Bar
Bleed all rads and pressure dropped to 1.5 bar (lots of air from all rads, downstairs and up, most from the tall one upstairs)
One of the rads bled out black water slightly sludgy, others were clear.
Tried CH, 3 downstaris and 2 upstairs rads were very noisy (like awaterfall), also they were not heating up at all on one side - seemed to be the lock shield side)
Tried opening/closing lock shields - no difference
Currently;
boiler pressure slowly builds over 4-5 days and when I re bleed rads it drops again.
This happens even though I am not using CH - (i am using boiler by virtue of hot water)
rads still noisy and not heating up
I cant see any signs on any leaks (gutted if it is just finshed all florring and decoration etc)
Could the inhibitor have rleased some of the latent corrison / sludge (it could be a coincidence that problems reared after the inhibitor was put in)
Any other ideas appreciated - waiting for plumber to come back but hes avoiding me for now
Im a diy numpty, just been gogling until now.