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- 15 Oct 2007
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Hi everyone.
We have completely refurbished our CH system. There is a new condensing system boiler, all new pipework, new rads and TRVs. We haven't installed a programmable thermostat yet, but that will happen in due course.
I have noticed that sometimes, after the CH system has been on and at a stable temp for a while, there is a low level humming noise coming from the system. If I put my hand on any of the pipes coming from the boiler, they are vibrating. This is also true of the pipes around where the CH valve is.
All the rads have been bled, but this has not cured the problem. Sometimes if I turn the system temperature down, the humming eventually stops. I can also make it stop if I open all of the TRVs to full or if I open the valve for the HW system (we have an S plan).
I recently became aware that TRVs are normally put on the flow pipe, but I'm not sure all of the ones on our systems were installed that way.
Does anyone have any ideas about what might be going on or how I could further diagnose this problem?
Cheers!
We have completely refurbished our CH system. There is a new condensing system boiler, all new pipework, new rads and TRVs. We haven't installed a programmable thermostat yet, but that will happen in due course.
I have noticed that sometimes, after the CH system has been on and at a stable temp for a while, there is a low level humming noise coming from the system. If I put my hand on any of the pipes coming from the boiler, they are vibrating. This is also true of the pipes around where the CH valve is.
All the rads have been bled, but this has not cured the problem. Sometimes if I turn the system temperature down, the humming eventually stops. I can also make it stop if I open all of the TRVs to full or if I open the valve for the HW system (we have an S plan).
I recently became aware that TRVs are normally put on the flow pipe, but I'm not sure all of the ones on our systems were installed that way.
Does anyone have any ideas about what might be going on or how I could further diagnose this problem?
Cheers!