User Manual for Utilitech 7131-04 Ventilation Fan with Humidity Sensor

Important Information

The Utilitech 7131-04 is a ventilation fan designed for bathroom use, featuring an integrated humidity sensor. Key specifications include an airflow of 100 CFM, a sound output of 1.5 sones, and a power consumption of 17W. It operates on a 120V, 60Hz power supply. This unit is not intended for use in kitchens or with solid-state control devices like dimmers or remote controls.

Safety Information

• Always disconnect the power supply at the circuit breaker before servicing or cleaning.
• Installation must be performed by a qualified person in accordance with local building and electrical codes.
• Do not install in ceilings with insulation greater than R40.
• Ensure the fan is vented to the outdoors; do not vent into attics, crawl spaces, or garages.
• If installing over a tub or shower, the unit must be connected to a GFCI-protected branch circuit and installed at least 3 ft. 3-1/4 in. (1 m) from the showerhead.

New Construction Installation

1. Attach the duct connector (C) to the fan housing (A).
2. Remove the wiring box cover and the wiring knockout.
3. Position the fan housing (A) next to a ceiling joist or wall stud. Ensure it is level and the bottom edge is flush with the ceiling or wall board.
4. Secure the housing to the joist using wood screws through the metal tabs.
5. Connect house wiring to the fan using the provided quick connectors. Ensure proper wire connections (refer to the wiring diagram).
6. Connect a 4-inch circular duct to the duct connector and secure with duct tape or a clamp.
7. Attach the grille (B) by pinching the mounting springs and inserting them into the slots on the housing.

Existing Construction Installation

1. Remove the existing fan and measure the opening to ensure it accommodates the 7-1/2 in. x 7-1/4 in. housing dimensions.
2. If necessary, cut an opening of 7-3/4 in. x 7-1/2 in.
3. Attach the duct connector (C) to the fan housing (A).
4. Remove the fan motor assembly from the housing to facilitate installation.
5. Remove the wiring box cover and knockout.
6. Pull house wires through the wiring box and connect using quick connectors.
7. Connect the 4-inch duct to the connector.
8. Insert the housing into the ceiling/wall opening and secure it to the joist or stud with wood screws.
9. Reinstall the fan motor assembly and plug it back into the housing.
10. Attach the grille (B) using the mounting springs.

Operating Instructions

The fan features two modes controlled by the wall switch:

• Humidity Sensing Mode: Flip the wall switch to the ON position. The LED indicator in the grille will be BLUE. The fan will automatically turn on when humidity exceeds the user-adjustable set-point and turn off when it drops below that level.
• Full Speed Mode: Toggle the wall switch on and off. The LED indicator in the grille will be AMBER.
• Off: Flip the wall switch to the OFF position.

To adjust the humidity sensitivity, use the selector dial located on the humidity sensor control inside the fan housing.

Care and Cleaning

Routine maintenance should be performed at least once a year:

• Disconnect power before cleaning.
• Remove the grille (B) by squeezing the mounting springs and pulling it down. Wipe with a damp cloth.
• Use a vacuum cleaner to remove dust and dirt from the fan housing (A). Carefully clean around the humidity sensor control to maintain accuracy.
• Wipe the housing with a damp cloth and dry thoroughly.
• Do not use solvents or harsh chemicals. Do not allow water to enter the motor.

Troubleshooting

If you encounter issues, check the following:

• Fan is louder than expected: Ensure the CFM rating matches the room size, check for sharp bends in the duct within 18 inches of the discharge, or ensure the fan is securely attached.
• Abnormal sound/vibration: Ensure the housing and grille are securely attached.
• Not clearing humidity: Ensure there is sufficient airflow intake (e.g., slightly open door/window) and that the humidity sensing mode is selected.