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Home > Archive > Home Repair forum > June 2007 > Re: Help Wiring Whole House fan with timer and 2 speed switch?
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Re: Help Wiring Whole House fan with timer and 2 speed switch?
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| John Grabowski 2007-06-01, 8:25 pm |
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"Moparmaniac" <moparmaniac@hotmail.com> wrote in message
news:FvY7i.9896$4Y.4013@newssvr19.news.prodigy.net...
> I'm getting ready to install a whole house fan in our home. While the
> instructions are fairly straight forward for wiring up the 2 speed switch
> that came with it, I'm wanting to add in a wall timer as well. The timer
> was made by the same company as the house fan.. It has 4 connections total
> on the back..on the back it has a picture of the wiring as 2 terminals on
> one side being Normally Closed and 2 terminals on one side being normally
> open.
>
> Is lead and neutral coming in on one side (NC) and and lead and neutral
> going out on the other side (NO)? If that is the case I'm assuming the
> Neutral coming out of the timer runs back to the motor, while the Lead
> coming out goes over to the 2 speeed switch where it is wired to the lead
> wire then the black and red wires attach to the black and red wires at the
> motor.
>
> Is a ground wire not involved in installing whole house fans? I'm not
> seeing mention of this anywhere in the instructions..I will recheck again
to
> confirm this.
>
> I have a home wiring book but they only show installing a house fan with
the
> 2 speed switch and they have a separate section on timers but not combined
> so I was wanting clarification if someone will assist.
>
> Thanks,
> Mike
Don't connect your neutral to the timer. Run it straight through to the
fan. The timer that you have will allow you to set the time for the fan to
turn off or set the time for the fan to turn on. I am assuming that you
want to use the timer to limit the hours that the fan will be on. In that
case use the normally open contacts. This means that the contacts are open
without the time being set, but will close and the fan will come on as soon
as you turn the dial. You can use a volt ohm meter to verify this. Have the
load from the timer go to the line on the speed switch.
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| Moparmaniac 2007-06-02, 3:25 am |
| Thank you! That was the answer I was looking for!
After I got home, I started working on the installation...to my surprise and
appreciation...the house builders had preinstalled the electrical boxes and
wiring for a timer and switch..all I had to do was connect them and go.
Saved me a bundle of time!
Thanks again for the response.
Mike
"John Grabowski" <jgrabows1@optonline.net> wrote in message
news:u118i.1939$co2.1704@newsfe12.lga...
>
> "Moparmaniac" <moparmaniac@hotmail.com> wrote in message
> news:FvY7i.9896$4Y.4013@newssvr19.news.prodigy.net...
> to
> the
>
>
> Don't connect your neutral to the timer. Run it straight through to the
> fan. The timer that you have will allow you to set the time for the fan
> to
> turn off or set the time for the fan to turn on. I am assuming that you
> want to use the timer to limit the hours that the fan will be on. In that
> case use the normally open contacts. This means that the contacts are
> open
> without the time being set, but will close and the fan will come on as
> soon
> as you turn the dial. You can use a volt ohm meter to verify this. Have
> the
> load from the timer go to the line on the speed switch.
>
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