Hi,
I need to replace a two way 22mm motorised Zone valve as I have replaced the motor twice now and it has failed again so I’m assuming the valve is stiff for some reason.
It’s the valve that allows CH water into the HW cylinder to heat it. Is there a truck to create an airlock so I don’t have to drain the whole system down to change it?
Also I disconnected the wiring as the motor was making an annoying buzzing sound I manually opened the valve but have no HW does the valve need to be in the circuit to allow the controller to fire the boiler?
Thanks in advance,
Jon
I need to replace a two way 22mm motorised Zone valve as I have replaced the motor twice now and it has failed again so I’m assuming the valve is stiff for some reason.
It’s the valve that allows CH water into the HW cylinder to heat it. Is there a truck to create an airlock so I don’t have to drain the whole system down to change it?
Also I disconnected the wiring as the motor was making an annoying buzzing sound I manually opened the valve but have no HW does the valve need to be in the circuit to allow the controller to fire the boiler?
Thanks in advance,
Jon