has the restricter been placed on the dhw mains to the boiler?
sounds like its just getting too much water flow
what is the delta-t temp compared to maufacturuers instructions? (most only give 35 degs) and have you checked your flow and temp with a weir gauge to check what the flow is?
T
May 2008
howtomendit.com for free repair help, information and advice.
