DIYbanter - View Single Post - New heating system

john51

wrote:
john51 wrote:

I recently changed all the rads on my heating and fitted TRVs to all
but one. I had a CORGI installer fit a WB Greenstar 30 CDi system
boiler. When most of the TRVs close, the system now makes really loud
noises in the lounge rads (2x4kw) due to high water flow rate. I

telling us what kind of noises would help

NT
A continuing, loud whooshing type noise like you get when water is
travelling too quickly through a small gap - in this case the TRV. If
you open the TRV fully it reduces the noise. If the pump is modulating
correctly I would have thought that it would reduce the pump speed to
compensate.