1. Introduction
This manual provides comprehensive instructions for the safe and efficient installation, operation, and maintenance of your Broan-NuTone Roomside Series Humidity Sensing Bathroom Exhaust Fan with LED Light, Model BELS8. This fan is designed to improve indoor air quality by effectively removing moisture, odors, and pollutants from your bathroom. Its built-in humidity sensor automatically activates the fan when humidity levels rise, and the integrated LED light provides illumination. Please read this manual thoroughly before installation and use, and retain it for future reference.
Image 1.1: Overview of the Broan-NuTone Roomside Series Humidity Sensing Bathroom Exhaust Fan with LED Light.
2. Important Safety Information
Always follow basic safety precautions when installing, operating, and maintaining this product to reduce the risk of fire, electric shock, or injury to persons. This appliance is intended for general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
- WARNING: To reduce the risk of fire, electric shock, or injury to persons, observe the following:
- Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer.
- Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.
- Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards.
- Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent back-drafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities.
- When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
- Ducted fans must always be vented to the outdoors.
- Do not use this fan with any solid-state speed control device.
- This unit must be grounded.
3. Product Features
The Broan-NuTone Roomside Series Humidity Sensing Bathroom Exhaust Fan offers several key features designed for convenience, efficiency, and improved air quality:
- Versatile Easy Installation: Designed for room-side installation, eliminating the need for attic access or drywall cutting, making it ideal for retrofit projects.
- Built-in Humidity Sensing: Automatically activates and deactivates the fan based on the room's humidity level, reducing moisture and inhibiting mold and bacteria growth. The set-point is user-adjustable.
- SlideClip™ Grille: Features patent-pending technology for a springless attachment, ensuring quick installation and easy removal for cleaning.
- CleanCover™ Grille: A modern, seamless design that blends with the ceiling and facilitates easy cleaning.
- ENERGY STAR® 4.1 Certified: Reduces energy consumption by over 50% compared to standard bath fans, meeting stringent energy efficiency standards.
- Quiet Operation: Operates at a low noise level of 1.5 Sones.
- Integrated LED Light: Provides efficient illumination for your bathroom space.
Image 3.1: Key features of the exhaust fan.
Image 3.2: Internal components and design elements.
4. Installation Instructions
This fan is designed for versatile room-side installation, simplifying the process for both new construction and retrofit applications. Ensure power is disconnected before beginning installation.
4.1 Pre-Installation Checks
- Verify that the mounting location can support the fan's weight.
- Ensure adequate clearance for the fan housing (7.5"D x 7.25"W x 5.75"H).
- Confirm that the existing ductwork is compatible with a 4-inch diameter duct.
- Gather necessary tools: screwdriver, wire strippers, drill, measuring tape, utility knife.
4.2 Room-Side Installation Steps
- Prepare Opening: Carefully cut an opening in the ceiling for the fan housing. The housing fits common fan size openings of 7.5” x 7.25”.
- Mount Housing: The fan features foldable mounting ears for easy installation. Secure the fan housing to the ceiling joists or framing.
- Connect Ductwork: Attach the 4-inch diameter duct to the fan's exhaust port. Ensure a secure and airtight connection.
- Electrical Wiring: Connect the electrical wiring according to local codes and the provided wiring diagram. This unit requires 120 Volts AC power. Ensure proper grounding.
- Install Grille: The SlideClip™ technology allows for quick and simple installation of the CleanCover™ grille. Align the grille and push it into place until it clips securely.
Image 4.1: Example of fan housing and duct connection during installation.
Image 4.2: Room-side installation diagram.
Image 4.3: Electrical wiring diagram.
5. Operating Instructions
The Broan-NuTone Roomside Series fan features a built-in humidity sensor for automatic operation and an integrated LED light.
5.1 Humidity Sensing Operation
The fan's humidity sensor automatically detects rising humidity levels in the room. When the humidity reaches the user-adjustable set-point, the fan will turn on to exhaust moist air. Once the humidity level drops below the set-point, the fan will automatically turn off after a short delay.
5.2 Adjusting Humidity Sensor Set-Point
The humidity sensor's sensitivity can be adjusted to suit your preferences and bathroom environment. Refer to the diagram below for the location of the adjustment dial. Use a small screwdriver to carefully turn the dial to increase or decrease sensitivity. A higher setting means the fan will activate at lower humidity levels.
Image 5.1: Humidity sensor adjustment dial location.
5.3 LED Light Operation
The integrated LED light operates independently and can be controlled via a standard wall switch (not included). Ensure proper wiring during installation to allow separate control of the fan and light functions.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your exhaust fan. Always disconnect power at the service panel before performing any maintenance.
6.1 Cleaning the Grille
The CleanCover™ grille is designed for easy removal and cleaning. To clean:
- Turn off power to the fan at the circuit breaker.
- Gently pull down on the grille to release the SlideClip™ attachments.
- Wash the grille with mild soap and water. Do not use abrasive cleaners.
- Rinse thoroughly and allow to dry completely before reattaching.
- Align the grille with the housing and push firmly until the SlideClip™ attachments engage.
Image 6.1: The CleanCover™ grille.
Image 6.2: Grille removal and cleaning process.
6.2 Motor and Fan Blade Cleaning
Periodically, the motor and fan blades may accumulate dust. After removing the grille, use a soft brush or vacuum cleaner with a brush attachment to gently clean the motor housing and fan blades. Do not bend the fan blades. Ensure all components are dry before restoring power.
7. Troubleshooting
This section addresses common issues you might encounter with your exhaust fan. If the problem persists after attempting these solutions, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | No power; loose wiring; faulty switch; humidity sensor not triggered. | Check circuit breaker. Verify wiring connections. Test wall switch. Adjust humidity sensor set-point or manually activate if applicable. |
| Fan is noisy. | Loose mounting; debris in fan blades; motor issue; improper ductwork. | Ensure fan is securely mounted. Clean fan blades and motor. Check ductwork for obstructions or damage. |
| Humidity sensor not working correctly. | Incorrect set-point; sensor obstruction; faulty sensor. | Adjust the humidity sensor set-point (refer to Section 5.2). Ensure sensor is clear of obstructions. If issues persist, contact customer support. |
| LED light not working. | No power to light; loose wiring; faulty LED module. | Check light switch. Verify wiring connections for the light. If LED is integrated and not replaceable, contact customer support. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Broan-NuTone |
| Model Number | BELS8 |
| Air Flow Capacity | 80 Cubic Feet Per Minute (CFM) |
| Noise Level | 1.5 Sones |
| Power Source | AC |
| Voltage | 120 Volts |
| Wattage | 21 watts |
| Product Dimensions (Housing) | 7.5"D x 7.25"W x 5.75"H |
| Grille Dimensions | 9.75" x 9.75" |
| Duct Diameter | 4 inches |
| Item Weight | 7 Pounds |
| Special Feature | Humidity Sensing |
| Certification | ENERGY STAR® 4.1, HVI Certified, UL Listed |
| Installation Type | Retrofit (Room-side) |
Image 8.1: Product dimensions and certifications.
9. Warranty and Support
For warranty information, please refer to the documentation included with your product packaging or visit the official Broan-NuTone website. If you require technical assistance, have questions about installation, operation, or maintenance, or need to report a product issue, please contact Broan-NuTone customer support.
Broan-NuTone Customer Service:
- Website: www.broan-nutone.com
- Contact information can typically be found on the manufacturer's website or product packaging.
