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Old 08-31-2012, 09:50 AM   #16
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Attempting to wire central exhaust fan to multiple switches


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So in the future if I decide to swap those push button timers where the switches are can I use the neutral wire off the adjacent outlets? If I did this the neutral wire would be coming off a completely different breaker than the fan circuit.
Absolutely not.

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Old 08-31-2012, 10:00 AM   #17
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Attempting to wire central exhaust fan to multiple switches


My next question is, since you are using the fans to create a negative pressure and force fresh air into the dwelling, but at a cost of losing conditioned air, wouldn't a fresh air exchanger be a better route to pursue in the long run of a economics stand point?
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Old 08-31-2012, 10:12 AM   #18
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Attempting to wire central exhaust fan to multiple switches


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Originally Posted by stickboy1375 View Post
My next question is, since you are using the fans to create a negative pressure and force fresh air into the dwelling, but at a cost of losing conditioned air, wouldn't a fresh air exchanger be a better route to pursue in the long run of a economics stand point?
I was thinking the same thing as well.

I belive the fresh air exhcanger can justify the cost and will not loose any heated or cooled air at all.

That should be pretty much norm for new home construction due they make it so airtight.

I have see it couple time in Wisconsin and it will become common over here in France.

Merci,
Marc
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Old 08-31-2012, 10:31 AM   #19
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Attempting to wire central exhaust fan to multiple switches


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.........
OK and here's the new diagram:
If I understand your diagram correctly, if any one of your toggle wall switches remains "ON", your fan will always remain on, overiding any and all your timer switches.

I could see this as a "user error" problem if, for example, you have guests who don't know what the fan toggle switch does (since there's no obvious local "feedback"), and leave the swtich in the ON position. You might want to use pilot light (when ON) toggle switch, or a double-pole single-throw switch that also controls the bath light, as a way to remind or ensure the local fan switch is turned off when the bathroom is vacated, and thus releasing control of the circuit back to the timer(s).


Last edited by sixspeed; 08-31-2012 at 10:45 AM.
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