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Old 11-17-2010, 07:46 PM   #1
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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?

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Old 11-17-2010, 08:42 PM   #2
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Aprilaire 700 Wiring Question


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.

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Old 11-17-2010, 09:21 PM   #3
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Aprilaire 700 Wiring Question


Not sure which model yet. I will receive the humidifier from shipper soon. I'll follow your instructions if its the #58.
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Old 11-22-2010, 02:52 PM   #4
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Aprilaire 700 Wiring Question


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?
Aprilaire 58 Wiring schematic.pdf
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Old 11-23-2010, 04:45 PM   #5
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Aprilaire 700 Wiring Question


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 ?
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Old 11-23-2010, 06:13 PM   #6
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Aprilaire 700 Wiring Question


Quote:
Originally Posted by carlb7 View Post
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 ?

Check post #2
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Old 11-23-2010, 08:20 PM   #7
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Aprilaire 700 Wiring Question


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.
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Old 11-24-2010, 10:00 AM   #8
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Aprilaire 700 Wiring Question


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?
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Old 11-25-2010, 02:05 PM   #9
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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.
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Old 11-25-2010, 03:59 PM   #10
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Aprilaire 700 Wiring Question


You got the answer to your original question.

Not all threads get 100's of replys.
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Old 12-09-2010, 04:40 AM   #11
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Aprilaire 700 Wiring Question


Nice spam you posted Lee.

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

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