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Duct (sheet metal) Installation:
1. Select Humidifier Control location on furnace return air duct.
2. Use the attached template to mark the duct opening.
3. Carefully cut the opening in the duct.
4. (See Figure 2) Gently pull knob (A) from Humidifier Control
cover (B). Cover is held in place by snap clips. Remove cover
by pulling carefully. Do not touch the sensing element.
5. Run low voltage leads to control location. All wiring should
conform to the National Electrical Code and local regulations.
6. Attach low voltage wires.
7. Make sure that the gasket (G) is in place. Use four sheet metal
screws (H) (not provided) to mount the Humidifier Control in
the duct opening.
8. Reassemble Humidifier Control cover, guiding the low voltage
wires through the cover side opening. Press on knob.