My UFH was making a noise as a result of air in the system.
On the top floor the manifolds have bottle valves.
On releasing the cap, some came out, then it struck me that the cap probably should not be tightened as it is an automatic valve and any air trapped in the valve has to go somewhere?
Last query, there are valves on the flow and return, but no hissing when I undo the return, possibly not working?
Thx for any feedback, like to understand a bit about how things work before phoning the local plumber.
On the top floor the manifolds have bottle valves.
On releasing the cap, some came out, then it struck me that the cap probably should not be tightened as it is an automatic valve and any air trapped in the valve has to go somewhere?
Last query, there are valves on the flow and return, but no hissing when I undo the return, possibly not working?
Thx for any feedback, like to understand a bit about how things work before phoning the local plumber.
