how to wire humidifier to circuit board
Home Improvement Asked on November 28, 2020
hi I have ganeralaire 1042 humidifier.it connect direct to transformer . my question is can I rewire to furnance control board. model is hk42fz0222105.just want to be active when heat is on. but I don’t know which terminal is for that. any one can help will be appreciated.
Edit: wiring diagram: 
hi. my circuit board doesn’t have hum terminal, can I connect 1 to com24v ,another connect to w1 is it ok or not? thanks a lot.
hi. thank you so much to answer my question. I will try when I am home. Hopefully it work, thanks again and have a nice day.
One Answer
Connect to W1, yes
You are correct that you want to hook up the W wire from your humidifier to W1 on your furnace control, along with C to COM and R to R. This is wiring diagram 6(B) in your humidifier's installation manual, BTW.
Answered by ThreePhaseEel on November 28, 2020
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