Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your AC Infinity CLOUDLINE S8 PRO inline duct fan. This fan is designed for various applications including ventilating hydroponic grow rooms, transferring heating/cooling, circulating air, cooling AV closets, and exhausting odors. Please read this manual thoroughly before use to ensure proper and safe operation.
Safety Information
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury to persons. This fan is intended for indoor use only. Ensure the power source matches the fan's requirements. Do not operate the fan with a damaged cord or plug. Keep hands and foreign objects away from the fan blades during operation. Disconnect power before cleaning or performing maintenance.
What's in the Box
- AC Infinity CLOUDLINE S8 PRO Inline Duct Fan
- 10-Speed Wired Controller
- Power Cord
- Mounting Hardware (machine screws and wood mounting screws)

Image: The AC Infinity CLOUDLINE S8 PRO fan, controller, and power cord as they appear in the product packaging.
Setup
Follow these steps to set up your CLOUDLINE S8 PRO fan:
- Choose a Location: Select a suitable location for the inline duct fan, typically within your ducting system. Ensure there is enough space for installation and maintenance.
- Mounting the Fan: Use the included mounting hardware to securely attach the fan to a stable surface, such as a wall or ceiling joist. The fan can be mounted horizontally or vertically.
- Connect Ducting: Attach your 8-inch ducting to both ends of the fan. Use duct clamps (not included) to ensure a secure and airtight connection.
- Connect the Controller: Plug the wired 10-speed controller into the fan's control port. Mount the controller in an accessible location using the provided screws.
- Power Connection: Plug the fan's power cord into a standard electrical outlet.

Image: Example installation of the CLOUDLINE S8 PRO fan within a grow tent setup, showing ducting connections.

Image: Diagram illustrating the CLOUDLINE S8 PRO as part of a duct fan system, designed for ventilation in various environments.
Operating Instructions
The CLOUDLINE S8 PRO features a wired 10-speed controller for precise airflow management.
- Power On/Off: Press the power button on the controller to turn the fan on or off.
- Adjust Fan Speed: Use the up and down arrow buttons on the controller to cycle through the 10 available fan speeds. The current speed setting is indicated by the illuminated dots on the controller.
- Memory Function: The controller features a backup memory that retains your last speed setting even after power cycles.
- UIS Compatibility: This fan is compatible with all UIS controllers for advanced intelligent programming and app control, allowing for automated environmental control.

Image: Detailed view of the 10-speed controller, highlighting the speed adjustment buttons and memory function.

Image: Diagram illustrating how the CLOUDLINE S8 PRO integrates into the AC Infinity Ecosystem with UIS controllers for app-based control and automation.
Maintenance
Regular maintenance ensures optimal performance and longevity of your fan.
- Cleaning: Periodically inspect the fan blades and housing for dust and debris buildup. Disconnect power before cleaning. Use a soft, dry cloth to wipe down surfaces. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the motor or electrical components.
- Ducting Inspection: Check ducting connections regularly for any leaks or disconnections that could reduce efficiency.
- Motor: The EC motor is designed for long-term, maintenance-free operation. No lubrication is required.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | No power to the unit; Controller not properly connected; Fan or controller malfunction. | Check power outlet and connections. Ensure controller cable is securely plugged into the fan. Contact support if issue persists. |
| Reduced airflow. | Ducting leaks; Blockage in ducting or fan; Fan speed set too low. | Inspect ducting for leaks and secure connections. Check for obstructions in the fan or ducts. Increase fan speed using the controller. |
| Excessive noise. | Loose mounting; Debris in fan blades; Fan operating at highest speed. | Ensure fan is securely mounted. Disconnect power and check for debris in blades. Reduce fan speed if noise is due to high airflow. |
Specifications
| Feature | Detail |
|---|---|
| Model | AI-CLS8 |
| Duct Size | 8 inches |
| Airflow | 807 CFM |
| Noise Level | 39 dBA |
| Power Usage | 78 Watts (Max) |
| Voltage | 12 Volts |
| Control Method | Wired 10-Speed Controller, App (with UIS controller) |
| Bearings | Dual Ball |
| Product Dimensions | 8.5 x 11.9 x 9.2 inches (approx.) |
| Cable Length (Power) | 8 Feet |
| Cable Length (Fan to Controller) | 10 Feet |
| Certifications | CE, ETL, RoHS |

Image: Official specifications diagram for the CLOUDLINE S8 PRO, including dimensions and performance metrics.

Image: Energy efficiency label for the AC Infinity AI-CLS8, showing energy class and noise level.
Warranty and Support
AC Infinity products are designed with quality and durability in mind. For specific warranty details and to register your product, please visit the official AC Infinity website or refer to the warranty card included with your purchase.
For technical support, troubleshooting assistance, or any questions regarding your CLOUDLINE S8 PRO fan, please contact AC Infinity customer service. You can find contact information on the official AC Infinity website or through your retailer.
Official User Manual (PDF): Download PDF





