A plumber has fitted new motorised valve to my heating system, Unfortunatly he failed to mention he couldn't wire it up. The original had three wires. Green/yellow = earth. Blue = neutral. Brown = live.
The new one a Boss unit has five wires.
After a lot of phone calls I got hold of the technical dept from Siemens who make the unit. They told me to wire it like this (the first colour is the original as above, the second is the new wiring):
Green/yellow to green/yellow
Brown to grey twisted together with white.
Blue to blue
New orange isolated.
I've done that and the valve doesn't seem to work. To test I can switch up the thermostat, turn on the central heating and then the motorised valve should open to allow water from the pump to go via the motorised valve to the radiators.
I've got a multi meter but what is the best way to tst?
Set the meter to AC volts. Black wire from meter to neutral (blue), red wire from meter to live (Brown connected to grey twisted together with white). I should read 240v, correct?
For info. when I say twisted I mean the grey and white wires are put together into the same connection.
The new one a Boss unit has five wires.
After a lot of phone calls I got hold of the technical dept from Siemens who make the unit. They told me to wire it like this (the first colour is the original as above, the second is the new wiring):
Green/yellow to green/yellow
Brown to grey twisted together with white.
Blue to blue
New orange isolated.
I've done that and the valve doesn't seem to work. To test I can switch up the thermostat, turn on the central heating and then the motorised valve should open to allow water from the pump to go via the motorised valve to the radiators.
I've got a multi meter but what is the best way to tst?
Set the meter to AC volts. Black wire from meter to neutral (blue), red wire from meter to live (Brown connected to grey twisted together with white). I should read 240v, correct?
For info. when I say twisted I mean the grey and white wires are put together into the same connection.