Hi There
I have just had a new system boiler installed (swtiched from combi) and installed new radiators
The HR92's were all working fine prior to the switch.
The new radiators all have honeywell valencia bi-directional flow TRV's fitted. Some are on return, some are on flow.
There are still three old valves on the system from radiators that were not that old and did not need to be replaced.
The issue is that when the heating cools or moves to off we get knocking from one of the HR92's that reverberates throughout the house and other radiators. Upon trying to isolate which radiator is causing the issue, by switching the valve fully off the knocking then moves to another radiator. (so far 3 - all the new TRV's)
Valves are all new so I cannot imagine more than one of them are faulty, so is this:
- An issue with valves being randomly fitted on both return and flow (didn't think this was an issue on bi-directional).
- Or maybe faulty valve somewhere that needs a trial and error to see which one is causing the problem?
I have read through the similar post here: https://www.wordpress-1219309-438749...ghlight=hammer and it sounds like flow and return should not be an issue as they are bi-directional valves, so struggling to figure what the issue is.
Any ideas appreciated
Thanks in advance
I have just had a new system boiler installed (swtiched from combi) and installed new radiators
The HR92's were all working fine prior to the switch.
The new radiators all have honeywell valencia bi-directional flow TRV's fitted. Some are on return, some are on flow.
There are still three old valves on the system from radiators that were not that old and did not need to be replaced.
The issue is that when the heating cools or moves to off we get knocking from one of the HR92's that reverberates throughout the house and other radiators. Upon trying to isolate which radiator is causing the issue, by switching the valve fully off the knocking then moves to another radiator. (so far 3 - all the new TRV's)
Valves are all new so I cannot imagine more than one of them are faulty, so is this:
- An issue with valves being randomly fitted on both return and flow (didn't think this was an issue on bi-directional).
- Or maybe faulty valve somewhere that needs a trial and error to see which one is causing the problem?
I have read through the similar post here: https://www.wordpress-1219309-438749...ghlight=hammer and it sounds like flow and return should not be an issue as they are bi-directional valves, so struggling to figure what the issue is.
Any ideas appreciated
Thanks in advance
Comment