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tallcoopscoach 12-02-2008 06:40 AM

Wiring a Humidifier

I installed a humidifier on our furnace over the weekend. I also installed the humidistat with ease. Now, I have to wire the humidifier to the furnace so that it kicks on when the furnace blower kicks on. Here's what I have. I have two red wires off of the humidifier that have to be tied into the wire outlets on the furnace. I tired to wire them to the community wire and the red but that keeps blowing the fuse. Which colors do I wire the reds that come off of the humidifier to on the furnace so that this works. I was told that there should be a "humidifier" wire in spot on the furnace but there is not. There is a "community", a "red", a "yellow", a "black", a "blue", and (I think) a "green" spot for wires that are there. Please let me know what you think.

Thanks much.

Billy_Bob 12-02-2008 08:21 AM

They are doing all sorts of things to motors these days to gain energy efficiency with HVAC units. The electricity provided to the electric motor may or may not be the same the humidifier requires.

I would contact the manufacturer and ask what to do.

Or post the manufacturer and model number of your furnace here and maybe someone would know what to do or could find a wiring diagram of your furnace.

tallcoopscoach 12-02-2008 08:35 AM

Good call...

When I get home, I'll post furnace info:)

tallcoopscoach 12-02-2008 11:16 AM

my furnace
ok... i have a payne pg8j/pg8m

hope that helps so that someone can tell me where to put these confounded red wires:)

Billy_Bob 12-02-2008 12:15 PM

I couldn't find an installation or service manual or wiring diagram on the Payne web site. I bet they provide these only to dealers.

I did find the following which says there is a "Control center with electronic air cleaner and air conditioning terminal" for the PG8M model.

It says the PG9M model has "Electronic air cleaner and humidifier terminals".

So I guess you had better call the manufacturer.


tallcoopscoach 12-02-2008 01:00 PM


i'll call them asap

thanks so much for your help!

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