1. Introduction
Thank you for choosing the voominhtec 35W Solar Attic Fan. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new attic fan. Please read this manual thoroughly before use and retain it for future reference.
This solar attic fan is designed to improve ventilation in attics, garages, barns, and greenhouses, helping to regulate temperature and reduce moisture buildup. It features a high-efficiency solar panel, a quiet DC motor, smart thermostat technology, and remote control capabilities for convenient operation.
2. Safety Information
WARNING: Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Read all instructions before installing or operating the fan.
- Installation should be performed by a qualified professional or experienced individual familiar with roof work and electrical connections.
- Always disconnect power before servicing or cleaning the unit.
- Ensure all electrical connections comply with local codes and regulations.
- Do not insert fingers or foreign objects into the fan blades.
- Wear appropriate personal protective equipment (PPE) during installation, including gloves, safety glasses, and fall protection if working on a roof.
- Keep children and pets away from the installation area.
- The fan is designed for outdoor use and is IPX5 weatherproof. However, avoid direct high-pressure water jets.
- Ensure the mounting surface is structurally sound to support the fan's weight and withstand wind loads.
3. Package Contents
Verify that all components are present and undamaged upon opening the package. If any items are missing or damaged, contact customer support.
- Solar Attic Fan Unit (with integrated solar panel)
- 110V Smart Power Adapter
- 65ft Remote Control
- Installation Accessories (screws, mounting hardware)
- Instruction Manual (this document)
Figure 3.1: Main components of the voominhtec 35W Solar Attic Fan package.
4. Product Features
- High-Efficiency Solar Panel: Monocrystalline solar panel with 360° horizontal and 30° vertical adjustability for optimal sunlight exposure. Features a 10+ year lifespan and automatic AC power backup during low sunlight.
- Premium DC Motor System: Brushless DC motor operates at ultra-quiet <1.7 sones with 1,500 RPM. IPX5 waterproof-rated and designed for 80,000+ hours of maintenance-free operation.
- Smart Thermostat Technology: Auto-sensing thermostat activates ventilation when attic temperatures exceed 77°F (25°C). Adaptive speed control increases airflow as heat rises.
- Extended-Range Remote Control: 65ft (20m) remote for adjusting speeds and toggling between 3 operational modes (Auto/Manual).
- Professional-Grade Durability: Wind-tunnel tested to withstand 130mph winds and temperatures from -22°F to 158°F (-30°C to 70°C). UL-listed components ensure safety compliance.
- Dual Power Supply: Operates on solar power during the day and automatically switches to 110V AC power when solar energy is insufficient or at night.
Figure 4.1: The solar attic fan effectively removes heat, moisture, dust, smoke, and odors from various spaces.
Figure 4.2: The fan features a high-efficient brushless DC motor for quiet and powerful operation.
5. Setup & Installation
Proper installation is crucial for the fan's performance and longevity. It is recommended to have this unit installed by a professional.
5.1 Site Selection
- Choose a location on the roof that receives maximum direct sunlight throughout the day.
- Ensure the area is clear of obstructions like trees or chimneys that could shade the solar panel.
- Verify that the roof structure can safely support the fan unit.
5.2 Installation Steps
- Measure and Mark: Measure the size of the inner circle of the fan base. Mark this diameter on your roof at the chosen installation site.
- Cut Opening: Carefully cut a circular opening on your roof according to the marked inner circle.
- Install Fan Unit: Place the fan unit over the opening. Secure the roof flange to the roof using appropriate screws and seal all joints with a waterproof sealant to prevent leaks.
- Adjust Solar Panel: Adjust the angle of the solar panel (0°-30° vertical) and rotate the base (360° horizontal) to face the sun for optimal energy capture. Tighten the adjustment rod to secure the panel's position.
- Connect AC Adapter (Optional): If using the 110V AC power backup, connect the smart power adapter to the fan and plug it into a suitable outdoor-rated electrical outlet.
Figure 5.1: Visual guide for the 4-step installation process.
Figure 5.2: The solar panel can be adjusted 360 degrees horizontally and 0-30 degrees vertically to maximize sun exposure.
Figure 5.3: Product dimensions and fan blade size for installation planning.
5.3 Installation Video
Video 5.1: This video demonstrates the assembly and operational features of the voominhtec Solar Attic Fan, including solar panel adjustment and remote control functions.
6. Operation
The voominhtec Solar Attic Fan offers both automatic and manual operation modes via the included remote control.
6.1 Remote Control Functions
Figure 6.1: Layout and functions of the remote control buttons.
- ON/OFF: Powers the fan on or off.
- Increase Speed (+): Increases the fan speed.
- Reduce Speed (-): Decreases the fan speed.
- Timing Plus/Minus: Adjusts the timer settings (if applicable).
- Pair Code: Used for pairing the remote with the fan unit.
- Auto Mode: Activates the smart thermostat function.
6.2 Operating Modes
- Automatic Mode: When selected, the fan's speed automatically adjusts based on the attic temperature. It activates when the temperature exceeds 77°F (25°C) and increases speed as the temperature rises.
- Manual Mode: Allows you to manually set the fan speed using the remote control.
6.3 Power Source Management
The fan intelligently switches between solar and AC power:
- During sufficient sunlight, the fan operates solely on solar power. The fan speed is determined by the intensity of sunlight in automatic mode.
- When sunlight is insufficient (e.g., cloudy days, night), the system automatically switches to the 110V AC power adapter (if connected). In AC mode, fan speed can be adjusted via the remote control.
Figure 6.2: The fan seamlessly transitions between solar and AC power for continuous ventilation.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your solar attic fan.
- Solar Panel Cleaning: Periodically clean the solar panel surface with a soft, damp cloth to remove dust, dirt, or debris that may reduce efficiency. Do not use abrasive cleaners.
- Fan Blade Inspection: Annually inspect the fan blades for any buildup of dust or debris. If necessary, carefully clean the blades after ensuring the power is completely disconnected.
- Ventilation Opening Check: Ensure the attic ventilation openings (soffit vents, gable vents) are not obstructed to allow proper airflow.
- Structural Check: Periodically inspect the mounting hardware and roof sealant for any signs of wear or damage. Re-seal or tighten as needed.
Figure 7.1: The epoxy-coated isolation mesh protects the fan blades from debris and damage, contributing to longer service life.
8. Troubleshooting
If you encounter issues with your voominhtec Solar Attic Fan, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan not operating (solar mode) | Insufficient sunlight; solar panel obstructed or dirty. | Ensure solar panel is clean and receives direct sunlight. Check for shading. |
| Fan not operating (AC mode) | AC adapter not plugged in; power outage; faulty adapter. | Verify AC adapter is securely plugged into a working outlet. Check household circuit breaker. Test adapter if possible. |
| Fan running at low speed | Low sunlight intensity; attic temperature below threshold (auto mode); remote setting. | In auto mode, speed increases with temperature. In manual mode, increase speed via remote. Ensure solar panel is clean. |
| Remote control not working | Dead batteries; out of range; pairing issue. | Replace remote batteries. Ensure remote is within 65ft range. Re-pair remote if necessary (refer to remote instructions). |
| Excessive noise | Debris in fan blades; loose mounting. | Disconnect power and inspect fan blades for obstructions. Ensure fan is securely mounted. |
If the problem persists after attempting these solutions, please contact voominhtec customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Brand | voominhtec |
| Model Name | 35Watt 1450CFM Solar Attic Fan (Model: SLF-12-1) |
| Product Dimensions | 22"D x 22"W x 10"H |
| Item Weight | 22.4 pounds |
| Power Source | AC + Solar |
| Wattage | 35 watts (Solar Panel), 50W (Motor Max) |
| Voltage | 110 Volts (AC Adapter) |
| Air Flow Capacity | 1250 Cubic Feet Per Minute (CFM) |
| Speed | 1500 RPM |
| Noise Level | <1.7 Sones |
| Motor Type | Brushless DC Motor |
| Control Method | Remote Control |
| Special Features | Dual power supply, Remote Controlled, Temperature sensing, Waterproof (IPX5) |
| Operating Temperature | -22°F to 158°F (-30°C to 70°C) |
| Wind Resistance | Up to 130 mph |
| Certification | UL Listed Components |
| Recommended Coverage | Up to 1,800 sq.ft. |
10. Warranty & Support
voominhtec products are manufactured to high-quality standards. For specific warranty details, please refer to the warranty card included with your product or visit the official voominhtec website.
If you require technical assistance, troubleshooting, or have questions regarding your product, please contact voominhtec customer support through the following channels:
- Website: Visit the voominhtec Store on Amazon
- Email: Refer to your product packaging or warranty card for contact email.
- Phone: Refer to your product packaging or warranty card for contact phone number.
Please have your model number (SLF-12-1) and purchase date available when contacting support.
