bathroom extractorfan

[paul b b]

hello chaps

customer has sold his flat and wants an extractor fitted in the window, im not sure if there is already one there.

i have not done one like this before, any advice? i take it the power is fed via a flex outlet into the fan.

thanks

 

[Evans Electric]

Yes , just check the zones, may have to fit a low volt fan, get a glazer to replace the glass with some with a hole in. Fan with overrun timer triggered by the light.

 

[NozSpark]

Just make sure you get a fan which has a "window" option, not all of them do.

Also get the fan before you get the new glazing; give fan to glazer so they can cut the right size hole

 

[paul b b]

i take it one with a little pull cord to turn it off is no good lol and as for the isolator is above the door ok? or should it be switch height

 

[Evans Electric]

Isolator above door is good, again in the right zone, As for pull cord , I think you'll find the fan has to be triggered by the light switch and have overrun to enable it to do the air changes.

Deke

 

[paul b b]

thanks deke

 

[SLIPSHOD & SLAPDASH]

Some glaziers will cut the hole in the existing glass (if its single glazed) but will not guarantee they wont break it trying

 

[Lee321]

why not core drill one in?

 

[paul b b]

why not core drill one in?

i have not seen the job yet, but its in a flat, i dont know if that makes any differance? apart from running in the cables

 

[Lee321]

i have not seen the job yet, but its in a flat, i dont know if that makes any differance? apart from running in the cables

if you measure up you can get the fan flush with the ceiling so no cables will be exposed/seen. you won't need any capping or yt etc

.

 

[paul b b]

thanks lost.

where is the best place to place the fan? or does it need to be outside zones?

 

[Lee321]

if the fan is ipx4 it can go in zone 1 and 2

however your unlikely to be in those zones

 

[batty]

i have not seen the job yet, but its in a flat, i dont know if that makes any differance? apart from running in the cables

Could be a problem if its on the 12th floor.

 

[sparkytim]

You can get a duct with grill in end and rubber gasket which enables fitting completed fan installation from inside.

Just core drill 4" hole from inside slide duct in untill grill end sticks out then retract and gasket expands to seal hole

Have used on 3 rd floor flats and in lofts to save working at height.

 

[paul b b]

do you all use core drills? last duct i did i drilled loads of 10mm holes lol

and just to confirm the fan is wired in between the switch and light

 

[batty]

do you all use core drills? last duct i did i drilled loads of 10mm holes loland just to confirm the fan is wired in between the switch and light

Will only use diamond core drills much quicker than the way you do it.

 

[sparkytim]

and just to confirm the fan is wired in between the switch and light

Depends Paul how you want to control it

If it is a timer fan triggered by switching on the light then you need a 3 core + CPC to the fan (Perm Live, Switched live and nuetral).

So it depends how the light is wired as to where you need to pick them up.

You will also need a 3 pole isolator to isolate the fan.