Hi, we have a santon premier unvented water heater that we are struggling to diagnose an issue.
When drawing hot water we are sometimes getting a banging noise similar to water hammer, we have changed the PRV after the main stop cock and we have fitted an arrestor as we initially thought it was water hammer - the noise is still present, plumber is scratching his head as am I!
Its particularly noticeable when the system is or has just finished heating water and we draw hot water, it happens from any tap initially, but if we close the tap and then re-open the noise doesn't reappear - any help appreciated if you have seen this issue before
When drawing hot water we are sometimes getting a banging noise similar to water hammer, we have changed the PRV after the main stop cock and we have fitted an arrestor as we initially thought it was water hammer - the noise is still present, plumber is scratching his head as am I!
Its particularly noticeable when the system is or has just finished heating water and we draw hot water, it happens from any tap initially, but if we close the tap and then re-open the noise doesn't reappear - any help appreciated if you have seen this issue before