Wiring for extractor fan

Dazza1976 · Dec 2, 2010

Hi all,

Fitted a Zehnder Halo Shower fan/ light today which i have to go back and wire up tomorrow,

Im looking at the instruction sheet now, and it says to wire it up via a double pole isolator switch with L N and E going to the fan.

Im a bit confused as it has an adjustable overrun timer, so surely it would require a switch live, a permanent live and a neutral, and wired via a 3 pole switch ???

Ive had a very long busy day, so excuse me if im being thick and missing something here !?

keniff · Dec 2, 2010

yeah just use a triple pole fan isolator

Dazza1976 · Dec 2, 2010

Yeah was gonna use triple pole one, but why does it only say to take sw/live neutral and earth to fan, and doesnt say anything about a permanent live ??

keniff · Dec 2, 2010

not sure really most instructions have miss prints and words etc missed out when i have read them, must just be a miss print as it needs a permanent live for the timed over run. it might be the instructions for the model without the timed over run?

SirKit Breaker · Dec 2, 2010

Take the cover off and look at the terminal block, if its a timer model it will be marked up , "L" "S/L" "N", if its plastic i usually sleeve the earth and leave it in a bit of connector block just in case its needed at a later date.