reillo rdb control box

[bigwave167]

have been given a spare burner but there is 3 wires going to control box,live,neutral and a black wire??? Can someone enlighten me ??

 

[lance]

Maybe one is discoloured.

 

[bill577]

probably the remote lock out light.

 

[rjscan]

have been given a spare burner but there is 3 wires going to control box,live,neutral and a black wire??? Can someone enlighten me ??

Forget about blak wire unless you have a remote lockout alarm (which means if you have a light or buzzer in your house to warn you of a failure on your boiler)
Wire up as normal

RJSCAN

 

[bill577]

you cant ignore the black wire it becomes live (240vac) if and when the boiler ever locks out, put a terminal block on it and make it safe if your not going to use it.

 

[bigwave167]

thankyou for all replies have now sorted wire