Extractor fan guide (an attempt anyway)
The wiring
***The core colours are due to change shortly but this guide is still applicable***
Take a three core and earth cable from the ceiling batten holder in the bathroom/toilet to a suitable position high up on the wall, outside of the bathroom for an isolator switch (usually above the door), then a three core and earth from the isolator to a position where you would like the fan to be positioned. The cable to the fan should be sunk into the wall and the other cables also suitably routed
Connections are as follows (fan with timer)
At the light connect the blue in with the neutral, red in with the permanent live and yellow in with the switched live, earth in with the rest. use red sleeving on the yellow and earth sleeving on the earth cable
At the isolator, connect the colours the same at the top as it is at the bottom. So they should correspond. i.e red yellow blue across the top, and red yellow blue across the bottom. Connect the earths into the connectors (use sleeving)
At the fan, look either in the instructions or by the side of the connectors on the fan. If the fan has no timer you will not need the red cable so tape it up inside safely. again, use red sleeving on the yellow and earth sleeving on the earth cable. you may find no connector for the earth so just use a long piece of sleeving over it so it covers the end and fold it back on itself.
Blue = neutral
Red = Permanent live
Yellow= switched live
The Hole to be drilled
find a position on the wall that has no obstructions, get a compass, measure it at 3 inches radius (you will be drilling a 6 inch wide hole)
then draw in a suitable position where you would like the hole. at this point its advisable to look outside to see what you will be drilling through
Method 1:
get a 20mm wide masonry bit and drill outside through the centre of your marked hole. then go to a local tool hire place and hire a 6 inch core bit (ronnie ) and maybe a drill too, depending how powerfull yours is.
the core bit will have a guide in the middle where it will sit in the hole you made previously. Drill it out and your extractor fan will sit nicely on. use ducting to the outside and dont forget to put a grille on the outside too, otherwise it will look rubbish. This takes approximately....... all day
Method 2
get an 8-12mm (thanks FWL_Engineer) wide masonry bit and drill a series of holes along the circumfrence of the line you have drawn. be sure to go out straight, otherwise the hole wont be big enough to fit your grille on.
Tips:
*dont be a cheat and put grip-fill on the grille outside to stick it up there, heat will react with it and melt the grille.
*Dont drill out too fast because you will blow a big hole in the brick work.
*Using a core-bit generates LOADS of dust so cover everything in a dust sheet.
Offer the fan up to the wall and mark out holes for fixing. You may need to notch out some of the brick work for the cable to sit in the wall nicely.
Hope that helps
chris
The wiring
***The core colours are due to change shortly but this guide is still applicable***
Take a three core and earth cable from the ceiling batten holder in the bathroom/toilet to a suitable position high up on the wall, outside of the bathroom for an isolator switch (usually above the door), then a three core and earth from the isolator to a position where you would like the fan to be positioned. The cable to the fan should be sunk into the wall and the other cables also suitably routed
Connections are as follows (fan with timer)
At the light connect the blue in with the neutral, red in with the permanent live and yellow in with the switched live, earth in with the rest. use red sleeving on the yellow and earth sleeving on the earth cable
At the isolator, connect the colours the same at the top as it is at the bottom. So they should correspond. i.e red yellow blue across the top, and red yellow blue across the bottom. Connect the earths into the connectors (use sleeving)
At the fan, look either in the instructions or by the side of the connectors on the fan. If the fan has no timer you will not need the red cable so tape it up inside safely. again, use red sleeving on the yellow and earth sleeving on the earth cable. you may find no connector for the earth so just use a long piece of sleeving over it so it covers the end and fold it back on itself.
Blue = neutral
Red = Permanent live
Yellow= switched live
The Hole to be drilled
find a position on the wall that has no obstructions, get a compass, measure it at 3 inches radius (you will be drilling a 6 inch wide hole)
then draw in a suitable position where you would like the hole. at this point its advisable to look outside to see what you will be drilling through
Method 1:
get a 20mm wide masonry bit and drill outside through the centre of your marked hole. then go to a local tool hire place and hire a 6 inch core bit (ronnie
) and maybe a drill too, depending how powerfull yours is.the core bit will have a guide in the middle where it will sit in the hole you made previously. Drill it out and your extractor fan will sit nicely on. use ducting to the outside and dont forget to put a grille on the outside too, otherwise it will look rubbish. This takes approximately....... all day
Method 2
get an 8-12mm (thanks FWL_Engineer) wide masonry bit and drill a series of holes along the circumfrence of the line you have drawn. be sure to go out straight, otherwise the hole wont be big enough to fit your grille on.
Tips:
*dont be a cheat and put grip-fill on the grille outside to stick it up there, heat will react with it and melt the grille.
*Dont drill out too fast because you will blow a big hole in the brick work.
*Using a core-bit generates LOADS of dust so cover everything in a dust sheet.
Offer the fan up to the wall and mark out holes for fixing. You may need to notch out some of the brick work for the cable to sit in the wall nicely.
Hope that helps
chris
