WARNING
1.120/240 volts may cause serious injury from electrical shock. Disconnect electrical power to the furnace and humidifier before starting installation.
2.Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling ductwork.
CAUTION
1.Do not set humidifier higher than recommended. Condensation damage may result.
2.Do not set humidity up to recommended levels if there is condensation on the inside of windows of any unheated living space. Condensation damage may result.
3.Do not mount the Humidifier Control on the supply plenum or duct. The unit cannot withstand the plenum temperatures and will malfunction.
4.When installing the Humidifier Control on a counterflow furnace, ensure the blower continues to run after the heat call is satisfied to eliminate high temperatures from damaging the Humidifier Control.
5.Do not mount the Humidifier Control downstream of the bypass outlet. False humidity conditions will cause the humidifier to operate incorrectly.
6.Avoid installing the Humidifier Control with the display facing downward to prevent the Humidifier Control from incorrectly measuring the relative humidity (RH) in the duct.
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TABLE OF CONTENTS
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 18
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 20
THESE INSTALLATION INSTRUCTIONS
ARE FOR THE APRILAIRE® AUTOMATIC DIGITAL
HUMIDIFIER CONTROL ONLY!
For Aprilaire® humidifier installation,
follow Aprilaire Humidifier Installation Instructions.
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