Wiring Aprilaire 600M to Goodman furnace GMSS92

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Old 11-16-19, 06:13 PM
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Wiring Aprilaire 600M to Goodman furnace GMSS92

I have spent a few hours looking for information about how to wire the Aprilaire 600M humidifier to the Goodman GMSS92 furnace but didn't find or didn't understand. Sorry for posting if this post has already been discussed.
Anyway looking at the furnace wiring diagram I found there is the connection for C and the other connection is at pressure switch(yellow wire). I have checked the furnace wiring and noticed that there is no pigtail to connect a wire to connect to the humidstat.
My question is:
Can I use C and W?
Thanks for your help and advice.
 
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Old 11-17-19, 09:56 AM
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Welcome to the forums.

Yes..... you can use W and C as alternate connection points on a gas furnace.
You still need to use a humidistat inline.
 
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Old 11-17-19, 12:50 PM
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Thanks for your advice.
Thanks for welcoming me to the forum.
 
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Old 11-26-19, 08:26 AM
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Done and running. Ended up getting a Y connector to connect the yellow wire from the furnace to the humidstat. Thanks for the advice.
 
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Old 11-26-19, 11:06 AM
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Good job. Thanks for letting us know how you made out.
 
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