Non vented tank

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David2749

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Hi, I've had a plumber service my boiler and unvented cylinder , he did have the necessary certificate.
The problem I have is water flowing through the tundish. I know he checked the pressure in the expansion tank, and identified the problem being the pressure reducing valve.
He told me that it was OK to have water dripping into the tundish.
This doesn't seem right to me.
 
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Nope nope nope nope. You're correct, it isn't right.

Did you actually ask him to show you his qualifications and check that he's is qualified? If there is water at the tundish then that indicates a fault condition and needs to be rectified, simple. If he is actually qualified then he shouldn't have left it that way and absolutely ridiculous if he's said it's ok to have water dripping @ the tundish, I'd insist that it needs fixed.

There will be a cost to that of course, if it isn't just an EV re-charge that's required.
 
Hi
I spent time looking for a plumber who had the required certificate.
I've double checked the EV pressure myself , which was 3bar. The plumber did say it was the pressure release valve, but when I asked him what I should do, as I didn't want if left with water dripping, all he said was if it get worse to contact him. I DONT THINK I'll be doing that.
I've tried to get another plumber but no one seems interested.
 
The EV pressure wouldn't be tested while the system is pressurised, the pre-charge also has to be aligned with the incoming supply pressure. Just because the PRV is set to 3bar doesn't actually mean that there is 3 bar being fed into the cylinder, the mains could be lower.

Don't know why no-one is interested, are you telling them the whole story, there's been someone in, they didn't fix it etc? If so don't, just tell them you've spotted water in the tundish and can you have the unvented cylinder serviced.
 
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The ev tank was replaced by the plumber 2 weeks ago, because that's what he thought was the problem.
It seems very few have the correct certificate to touch unvented systems, they only want to service the boiler. I've even tried BG. I've not told them someone came to repair the system.
 
David2749 said:
Hi
I spent time looking for a plumber who had the required certificate.
I've double checked the EV pressure myself , which was 3bar. The plumber did say it was the pressure release valve, but when I asked him what I should do, as I didn't want if left with water dripping, all he said was if it get worse to contact him. I DONT THINK I'll be doing that.
I've tried to get another plumber but no one seems interested.
Click to expand...
What area of the country are you. There maybe someone on here who can help
 
David2749 said:
Hi, I've had a plumber service my boiler and unvented cylinder , he did have the necessary certificate.
The problem I have is water flowing through the tundish. I know he checked the pressure in the expansion tank, and identified the problem being the pressure reducing valve.
He told me that it was OK to have water dripping into the tundish.
This doesn't seem right to me.
Click to expand...
If he identified the pressure reducing valve as the problem, why didn't he say it required changing or that he would change it?. You can (re) check that yourself to make sure its that. Shut off the cylinder heating, shut the cold water supply to the cylinder, open any hot tap to drain off 4 or 5 litres of hot water, shut the tap, ensure no one draws off any hot water for say 2 hours, check for leakage into the tundish.
 
Hi
I've done exactly that, a friend who is a gas safe engineer came over today to disconnect the pipe from the prv, he could see it dripping. He can't change this valve though.
I'm now awaiting for a reply from this site to see if a gas safe engineer can service both boiler and tank plus change this valve.
 
If an engineer has:
1. A current Gas Safe registration for gas boilers AND
2. A current "G3" accreditation, from Gas Safe or from another provider such as Napit
then he or she can service the boiler and work on the unvented hot water cylinder.
 
Do you know if BG central heating cover, will cover unvented tanks?
I just want to get this problem resolved.
 
It can do I believe but I think it's one of those items that needs to be added as part of their classic cover and it's usually written in quite specifically. A quick call to them with your policy will confirm.
 
Hi
I've had quote to change the PRV £200 to change the valve and £200 for the part, this seems quite expensive??
 
D

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