In our new house we seem to get quite a bit of flow noise when the both the motorised valves are closed and the bypass valve is working.
We have a Glowworm Ultracom 24HXI boiler supplying around 14 radiators (all with TRV's apart from the hall radiator and the bathroom towel rail) and a Megaflo.
There are two motorised valves, one appearing to control flow to the megaflo and the other controls the flow to radiators.
When the water in the cylinder gets up to temperature one of the motorised valve closes and if the central heating is not on all water flow seems to be through the bypass which is emanating quite a bit of flow noise.
Same thing happens when the thermostat in the hall clicks if the hot water is not on or it is on but the cylinder is up to temperature.
Under either of these conditions the boiler stops firing, the motorised valves close but the pump runs on (presumably to stop the boiler from kettling) which means all the flow is through the bypass which is then very noisy.
Adjusting the bypass valve makes no difference to the noise (yes i did mark its position and return it back to where it was after fiddling).
Does it sound like the system has been plumbed correctly and can i do anything to reduce the noise from the bypass valve?
Thanks in advance
We have a Glowworm Ultracom 24HXI boiler supplying around 14 radiators (all with TRV's apart from the hall radiator and the bathroom towel rail) and a Megaflo.
There are two motorised valves, one appearing to control flow to the megaflo and the other controls the flow to radiators.
When the water in the cylinder gets up to temperature one of the motorised valve closes and if the central heating is not on all water flow seems to be through the bypass which is emanating quite a bit of flow noise.
Same thing happens when the thermostat in the hall clicks if the hot water is not on or it is on but the cylinder is up to temperature.
Under either of these conditions the boiler stops firing, the motorised valves close but the pump runs on (presumably to stop the boiler from kettling) which means all the flow is through the bypass which is then very noisy.
Adjusting the bypass valve makes no difference to the noise (yes i did mark its position and return it back to where it was after fiddling).
Does it sound like the system has been plumbed correctly and can i do anything to reduce the noise from the bypass valve?
Thanks in advance