What is causing water to come from overflow pipe

[Paul Langley]

Thanks Riley; will do and hopefully I will find someone on the island who wants a job.

 

[John.g]

Doesn't the unvented hot water cylinder have a E.vessel and a TPRV?.

 

[Riley]

Yes but can’t be worked on by op

 

[John.g]

Agreed, but surely he can look at the tundish and see if the TPRV is discharging water, for whatever reason.

 

[SimonG]

if its piped correctly. which from the description it possibly isnt

 

[Paul Langley]

Thanks to all who have commented; much appreciated. It appears from Riley's latest comment, I am not permitted to do any work on the domestic hot water system? In an effort to give as much info as possible to a heating engineer, I this morning ascertained that the white EV on the hot water system has no pressure in it whatsoever though no water exits the schrader valve indicating to me that the diaphragm is probably intact. I assume from all said above, I am not permitted to depressurise the hot water system and recharge the EV to check if it is sound?

 

[Riley]

No you need to be G3 to work on an unvented hot water system. In addition it sounds like it’s not piped correctly so you really need to get a pro tohave a look

 

[Paul Langley]

Thanks Riley. Will do. End of thread from my end.

 

[Riley]

No worries fella we don’t mean to be awkward but safety is our paramount concern

 

[Paul Langley]

I appreciate that safety is your paramount concern and I echo that. If you turn out to be correct and the system is not piped correctly, it is a pity that Nu-Heat who designed the system (if the design is faulty) or the installer who may not have followed Nu-Heat's design, do not have the same view about safety as you and I.