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reillo rdb control box

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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 ??
 
Maybe one is discoloured.
 
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bigwave167 said:
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 ??
Click to expand...

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
 
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.
 
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