Can anyone advise me? I'm pulling my hair out with this!
I've got an indirect hot water cylinder coming from an Oil boiler via a 3 way port valve. I've got hot water to the tank coil input but very cold at output of coil from tank. Suspecting an air lock in the coil I've refilled the system loads of times - from tank above, from mains into the boiler drain point etc........
The radiator system coming off the other port on the valve is behaving correctly.
The 3 port valve has been changed (no Joy).
Initially the hot water system was only being heated (very very hot) when the radiator programme was selected. I found that this was happening via flow through an old back boiler in the fire place. I have capped off this back boiler pipework at the tank and into the radiator pipes.
I have never had hot water at the cylinder tank when it is selected at the programmer.
Any advice welcome!
I've got an indirect hot water cylinder coming from an Oil boiler via a 3 way port valve. I've got hot water to the tank coil input but very cold at output of coil from tank. Suspecting an air lock in the coil I've refilled the system loads of times - from tank above, from mains into the boiler drain point etc........
The radiator system coming off the other port on the valve is behaving correctly.
The 3 port valve has been changed (no Joy).
Initially the hot water system was only being heated (very very hot) when the radiator programme was selected. I found that this was happening via flow through an old back boiler in the fire place. I have capped off this back boiler pipework at the tank and into the radiator pipes.
I have never had hot water at the cylinder tank when it is selected at the programmer.
Any advice welcome!