2 basic questions please if any of you have any advice?
1) what is the best way to clean a blocked/partially blocked microbore manifold?
2) a 2 port motorised valve (HONEYWELL) has grey as permanent live (unlike a 3 port mid position does). why is this?
am i right in thinking that with the same valve, if a room or cylinder thermostat calls for heat, the 2 port valve BROWN wire becomes live (from the stat closing/calling) which then makes the valve motor motor across, which then in turn puts power on to the ORANGE wire, which then start up the pump and boiler respectively?
I am nosey but curious as to how it actually works.
1) what is the best way to clean a blocked/partially blocked microbore manifold?
2) a 2 port motorised valve (HONEYWELL) has grey as permanent live (unlike a 3 port mid position does). why is this?
am i right in thinking that with the same valve, if a room or cylinder thermostat calls for heat, the 2 port valve BROWN wire becomes live (from the stat closing/calling) which then makes the valve motor motor across, which then in turn puts power on to the ORANGE wire, which then start up the pump and boiler respectively?
I am nosey but curious as to how it actually works.