Introduction
This manual provides detailed instructions for the VIVOSUN 4-Inch Grow Tent Ventilation System. This comprehensive kit includes an inline duct fan with a speed controller, a 4-inch carbon filter, and 8 feet of ducting. Designed for optimal air circulation, odor control, and environmental regulation, this system is ideal for grow tents, hydroponic setups, and other indoor plant growing environments. Please read this manual thoroughly before installation and operation to ensure safe and efficient use.
Safety Information
- Electrical Safety: Always ensure the power supply matches the product's specifications. Disconnect power before any installation, maintenance, or cleaning. Do not operate with damaged cords or plugs.
- Installation: Install the system in a well-ventilated area, away from flammable materials. Ensure all connections are secure to prevent air leaks.
- Usage: Do not use this product in flammable, explosive, high oxygen, gas, or dust concentration environments. Do not use fans for heating or air conditioning.
- Maintenance: Regularly inspect all components for wear and tear. Replace damaged parts immediately.
Package Contents
The VIVOSUN 4-Inch Grow Tent Ventilation System includes the following components:
- 1 x 4-Inch Inline Duct Fan
- 1 x Speed Controller
- 1 x 4-Inch Carbon Filter
- 1 x 8ft. Aluminum Ducting
- 2 x Heavy-Duty Stainless Steel Clamps
- 1 x Carbon Filter Belt
Visual Overview of Components

Image: All components of the VIVOSUN 4-Inch Grow Tent Ventilation System, including the inline duct fan, carbon filter, flexible aluminum ducting, speed controller, and clamps.
Setup Instructions
Follow these steps to properly install your VIVOSUN Grow Tent Ventilation System. Ensure all power is disconnected before beginning installation.
1. Installing the Inline Duct Fan
The inline duct fan is designed for easy installation in various configurations. It can be hung from the grow tent frame using the provided straps or mounted to a surface.

Image: The VIVOSUN inline duct fan mounted inside a grow tent, showing its connection to the carbon filter and ducting.
Steps:
- Identify the airflow direction indicated by an arrow on the fan housing.
- Securely hang the fan using the included straps or mount it to a stable surface. Ensure it is positioned to facilitate efficient air movement.
2. Connecting the Carbon Filter
The carbon filter is crucial for odor control. It can be used as an intake filter (pre-filter outside) or an exhaust filter (pre-filter inside).

Image: Exploded view of the carbon filter, highlighting the 1200+ RC 412 Australian Virgin Charcoal bed and the inner/outer mesh for high airflow.

Image: Visual representation of the carbon filter's function as both an intake and exhaust filter, showing airflow direction for odor removal and fresh air supply.
Steps:
- Attach one end of the carbon filter to the intake or exhaust port of the inline fan, depending on your desired setup.
- Use one of the stainless steel clamps to secure the connection tightly, preventing air leaks.
- If using the carbon filter as an intake, ensure the pre-filter is on the outside. If using as an exhaust, the pre-filter should be inside.
3. Attaching the Ducting
The 8ft flexible aluminum ducting allows for versatile routing of air. It is resistant to high temperatures and corrosion.

Image: The flexible aluminum ducting, highlighting its durable construction and flexibility for routing air.
Steps:
- Connect the ducting to the remaining open port of the inline fan or carbon filter.
- Route the ducting to your desired exhaust or intake point (e.g., outside the grow tent, into another room).
- Use the second stainless steel clamp to secure the ducting connection.
- Ensure the ducting is stretched and free of kinks to maximize airflow.
4. Connecting the Speed Controller
The speed controller allows you to adjust the fan's airflow and noise level.
Steps:
- Plug the inline duct fan's power cord into the speed controller.
- Plug the speed controller into a standard electrical outlet.
Video: VIVOSUN Ventilation Kit Overview
Video: An official VIVOSUN video demonstrating the components and setup of the ventilation kit, including the inline fan, carbon filter, and ducting. This video provides a visual guide to the installation process and highlights key features.
Operating Instructions
Using the Speed Controller
The included speed controller allows for precise adjustment of the fan's speed and, consequently, the airflow. This helps in maintaining optimal temperature and humidity levels within your grow tent.
- Power On/Off: Rotate the knob clockwise until you hear a click to turn the fan on. Rotate counter-clockwise until you hear a click to turn it off.
- Speed Adjustment: Once the fan is on, continue rotating the knob clockwise to increase the fan speed (High) and counter-clockwise to decrease the speed (Low).
- Optimal Setting: Adjust the speed based on the environmental conditions of your grow tent. Higher speeds are suitable for reducing heat and humidity, while lower speeds are for maintaining stable conditions.
Maintenance
Regular maintenance ensures the longevity and efficiency of your VIVOSUN ventilation system.
Inline Duct Fan Maintenance
- Cleaning: Periodically disconnect the fan from power and wipe down the exterior with a damp cloth. For internal cleaning, carefully remove the ducting and carbon filter. Use a soft brush or compressed air to remove dust and debris from the fan blades and motor housing. Ensure the fan is completely dry before reassembling and reconnecting power.
- Inspection: Check the fan for any unusual noises or vibrations during operation. Inspect the power cord for damage.
Carbon Filter Maintenance
- Pre-filter Cleaning: The white pre-filter sleeve should be cleaned regularly (every 2-4 weeks, depending on usage). Remove the pre-filter, gently shake off loose debris, and hand wash it with mild detergent. Rinse thoroughly and allow it to air dry completely before reinstalling.
- Carbon Filter Replacement: The activated carbon inside the filter will eventually become saturated and lose its effectiveness in odor removal. Replace the carbon filter every 6-18 months, depending on usage and the intensity of odors.
Ducting Maintenance
- Inspection: Regularly check the ducting for tears, punctures, or kinks that could restrict airflow.
- Cleaning: If necessary, gently wipe the interior and exterior of the ducting to remove dust buildup.
Troubleshooting
Here are some common issues and their potential solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan not turning on | No power, speed controller off, damaged cord/plug. | Check power outlet, ensure speed controller is turned on (rotate past click), inspect cords for damage. |
| Low airflow | Fan speed too low, clogged filter, kinked ducting, fan installed incorrectly. | Increase fan speed, clean/replace pre-filter, check ducting for obstructions, ensure fan is oriented correctly. |
| Persistent odors | Saturated carbon filter, air leaks in system, insufficient airflow. | Replace carbon filter, check all connections for leaks, increase fan speed. |
| Excessive noise/vibration | Loose mounting, debris in fan, unbalanced impeller. | Ensure fan is securely mounted, clean fan blades, contact support if impeller is unbalanced. |
Specifications
| Feature | Detail |
|---|---|
| Brand | VIVOSUN |
| Model Name | 306201PS-4 |
| Size | 4 Inch |
| Air Flow Capacity | 190 Cubic Feet Per Minute (CFM) |
| Wattage | 15 watts |
| Voltage | 15 Volts (AC Power Source) |
| Noise Level | < 30 dB (as per product claims) |
| Ducting Length | 8 feet |
| Control Method | Touch (Speed Controller) |
| Mounting Type | Wall Mount (or hanging) |
| Item Weight | 13.57 pounds |
| Product Dimensions | 9"D x 18.6"W x 9"H |

Image: A visual breakdown of the system's components with key dimensions and technical specifications for the fan, filter, and ducting.
Warranty and Support
VIVOSUN products are designed for reliability and performance. For specific warranty details, please refer to the documentation included with your purchase or visit the official VIVOSUN website.
If you encounter any issues or have questions regarding your VIVOSUN 4-Inch Grow Tent Ventilation System, please contact VIVOSUN Customer Support:
- Online Support: Visit the VIVOSUN official website for FAQs, troubleshooting guides, and contact forms.
- Email/Phone: Refer to your product packaging or the VIVOSUN website for the most current contact information.





