Question about Aprilaire 700 Humidifier

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Wiring an Aprilaire 700 M humidifier.

I need detailed wiring diagram so that a novice can do it.

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  • Anonymous Dec 05, 2008

    need a diagram!

  • bernbry Dec 05, 2008

    I wired my Aprilaire correctly (I thought) and now the humidifier runs until the heat comes on and then it turns off. It is hooked into an electric Rheem furnace. Any suggestions!



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SOURCE: Aprilaire 550 humidifier

Did you clean the orfice ? It is located on bottom of solenoid. It is plastic with a very small hole.The hole gets plugged and you can clean it or buy a nw one for 50 cents.

Posted on Nov 12, 2008

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SOURCE: What should my humidifier be set at for the winter?

Hi, Jennifer:

I'm no expert, but those who are seem to agree that the first thing to check is your evaporator panel. Aprilaire recommends replacing it annually--so if you haven't replaced it recently, that would be the first step to take. Next, check the power supply to your Aprilaire unit. Turn the humidistat to 0%, and then turn it slowly back toward 35% until you hear a click at the unit. If you don't hear a click, you'll want to check that the unit is in fact getting electric power (you may want to get an electrician or furnace tech to do this). If you do hear the click, the next thing to check is whether you have sufficient water flow to your Aprilaire unit. On mine, I had to adjust my water supply saddle valve, as well as the inline valve on the discharge side of the solenoid (see prior post from this morning)--and this seemed to clear the lines and restore water flow. Once you achieve proper water flow, you will probably want to set your humidistat at 35% for winter temps of around 20 degrees F--but be sure to adjust it downward for colder weather. Comments, anyone?

Posted on Dec 15, 2008

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Technical Support
Research Products Corporation

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