Fan Speed Control Unit

AlbertR · 16 Jul 2007

I want to install a fan speed control unit into a timed fan in order to quieten it down a touch.

The switch I have has a knob similar to a dimmer switch and at the back there are 2 terminals.

Can anyone tell which part of the circuit the control is wired to.

Thanks in anticipation

ColJack · 16 Jul 2007

it will have to go between the timer and the fan, since if you put it before the timer it will lower the voltage to it and sto it working..

AlbertR · 16 Jul 2007

Ah, that seems to make sense. Thanks.

The fan is a wall mounted Addvent AVX150TA.

The timer is on the circuit board. So this would involve wiring from the circuit board outlet to the fan motor.

I was thinking it would just be a case of stepping down the voltage of the permanent live but if that feeds the timer then that is why the thing won't work when I try this.

So I'm stuck with things as they are?

ColJack · 16 Jul 2007

buy a quieter running fan? a new one often runs quieter than one a few years old as the bearings wear..

AlbertR · 16 Jul 2007

Yep, I'll just do that. (The fan is about ten years old I suppose!)

Many thanks for your help.

AlbertR · 12 Aug 2007

So back to this...

The variable Fan Control Switch has 2 terminals marked L1 and C, I take it that is for Live 1 and Common (there is a L2 but that has had its terminal removed).

How should this switch be wired?

Cheers for any help.

Oh, and what is the difference between a dimmer switch and a fan control (the fan control does say on it "For Fans Only")

Albert

breezer · 12 Aug 2007

But last year you said

AlbertR said:
Yep, I'll just do that. (The fan is about ten years old I suppose!)

and as you were also told

ColJack said:
it will have to go between the timer and the fan, since if you put it before the timer it will lower the voltage to it and sto it working..

it does not matter which way round.

however it may be that your fan is not able to be speed controlled so you may have to get a new quiter one anyway, and if you can slow it down, it will not work as well as it did since it is running slower

Steve · 13 Aug 2007

breezer said:
But last year you said

AlbertR said:

Yep, I'll just do that. (The fan is about ten years old I suppose!)

Click to expand...

Last month!!!!

CallEdsFirst · 13 Aug 2007

So anyway, ignoring the advice and forgetting what I said I was going to do.........

Addvent, not that I would ever knock CEF's fine in-house brands, can be improved upon with something from Vent Axia/Xpelair, but definitely not anything from a skip, allegedly.

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Fan Speed Control Unit

breezer

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