RETURN AIR DUCT INSTALLATION
1Locate the humidistat in the return air duct at least 12 in. up stream prior to the humidifier or the humidifier
2Remove the backing and adhere the humidistat mounting template in a horizontal position, make sure it is level.
3Drill four 7/64 in. mounting holes.
4Drill 1/2 in. hole in the center of the template and use tin snips to cut the rectangular hole designated by the dotted lines then remove template.
5Remove the backing and adhere the gasket over the opening area.
6Connect the low voltage wires to the humidistat terminals. Tuck the wire into the recessed area on the back of the base plate.
7Use sheet metal screws to securely fasten the humidistat to the return air duct.
CAUTION:
∗Mount the humidistat in the return air duct only, installation on the warm air duct will destroy humidistat element.
∗Make certain the wires stay in the slot under the mounting base.
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