What does it mean when water flows through the tundish on an unvented cylinder?
When water flows through the tundish this means the unvented cylinder is in fault condition.
There are a few reasons as to why it could be discharging.
To name a few:
-System has not been serviced regularly or even correctly! (Make sure you're unvented cylinder service engineer is qualified)
-Too much pressure in the system
-Faulty components
If you're hot water cylinder is discharging then you need to get in touch with a service engineer asap!
you can give us a call on 07904 536661, we cover the north west - your Unvented hot water cylinder repair experts.