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carlb7 11-17-2010 07:46 PM

Aprilaire 700 Wiring Question
I am installing an Aprilaire 700 to a Ruud UHBK handler. I was going to wire the digital humidistat R&C terminals to the W1&C at the handler. I saw it wired this way on a Trane air handler with a similar humidifier. One of the diagrams for the Aprilaire showed this wiring as the preferred method. Then I would plug the fan from the humidifier to an ac outlet nearby. Would this setup supply the correct voltage and operate the humidifier when there was call for heat?

JJDH 11-17-2010 08:42 PM

R and c get a constant 24 from a transformer to powrr backlight, is this the newest #60 control? if its the 58 control, for your air handler/ heatpump put w/g from humidistat to g on board. and cf to common on board.

carlb7 11-17-2010 09:21 PM

Not sure which model yet. I will receive the humidifier from shipper soon. I'll follow your instructions if its the #58.

carlb7 11-22-2010 02:52 PM

1 Attachment(s)
Finally my humidifier has arrived!! I have the model 58 digital controller. As stated the R & C get constant 24 from transformer but could you explain further on that?
Attachment 27024

carlb7 11-23-2010 04:45 PM

Could anyone guide me on this? I was hoping to install the humidifier tomorrow. I wasn't sure if I wire R & C and G & C ? :huh:

newtech 11-23-2010 06:13 PM


Originally Posted by carlb7 (Post 539387)
Could anyone guide me on this? I was hoping to install the humidifier tomorrow. I wasn't sure if I wire R & C and G & C ? :huh:

Check post #2

carlb7 11-23-2010 08:20 PM

Thanks newtech. Post #4 explains that I am not quite sure about R & C getting the constant 24 from the transformer. Post #5 is asking for further explanation. I was hoping for a little more help.

carlb7 11-24-2010 10:00 AM

Could I please get clarification on the R & C wiring? Do I wire the R to R on IFC board in air handler, C to C on IFC board, W/G to G on IFC board and C/F to C on IFC board?

carlb7 11-25-2010 02:05 PM

I finally learned from a friend of mine in the HVAC business on the correct wiring. I thought this forum was designed to help the DIY'er. I'm not sure what was wrong with my question. Maybe I will have better luck next time.

beenthere 11-25-2010 03:59 PM

You got the answer to your original question.

Not all threads get 100's of replys.

beenthere 12-09-2010 04:40 AM

Nice spam you posted Lee.

I see you used a different name here, then on that other site.

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