looking to change boiler...manufacturer says the minimum head of pressure between header tank and boiler heat exchanger is 2m - Would this be to the header tank bottom or to the water level inside?
Have only got 1.71m presently to header tank bottom and have had no problems with present boiler. Is this critical as I will struggle to move the tank higher - maybe 150mm at most. Moving the new boiler to a lower level is not an option either.
Have only got 1.71m presently to header tank bottom and have had no problems with present boiler. Is this critical as I will struggle to move the tank higher - maybe 150mm at most. Moving the new boiler to a lower level is not an option either.