Trying get my head around this one.
Worcester 28i RSF (twin pass heat exchanger) is heating rads when running hot tap. Other Engineers have just told customer to turn down TRV's. Not a fix for the problem as bypass rad still heats.
Any ideas?
Check valves on flow and return bellow boiler maybe?
Worcester 28i RSF (twin pass heat exchanger) is heating rads when running hot tap. Other Engineers have just told customer to turn down TRV's. Not a fix for the problem as bypass rad still heats.
Any ideas?
Check valves on flow and return bellow boiler maybe?
