1. Overview
The Amico 20-inch Shutter Exhaust Fan is designed for efficient ventilation in various large spaces such as warehouses, greenhouses, barns, and workshops. It features a 70W EC motor, providing up to 3800 CFM airflow, and includes a smart thermostat with 8-speed control for automated operation.

Image 1.1: Overview of the Amico Shutter Exhaust Fan with airflow illustration.
2. Safety Instructions
- Read all instructions before installation and operation.
- Ensure the power supply matches the fan's voltage (120V).
- Disconnect power before servicing or cleaning the fan.
- Keep hands and foreign objects away from moving blades.
- Install the fan securely to prevent accidental dislodgement.
- Do not operate the fan with damaged wiring or components.
- This fan is designed for ventilation; do not use for hazardous material extraction without proper safety precautions.
The fan meets North American FCC safety standards.
3. Package Contents
Verify that all components are present before beginning installation:
- Amico 20-inch Shutter Exhaust Fan Unit
- Smart Thermostat Controller with 3ft wire
- Pre-wired 7ft Power Cord
- Installation Template
- User Manual

Image 3.1: Exploded view showing the fan's main components.
4. Installation
The Amico Shutter Exhaust Fan is designed for wall-mount installation and features a plug-and-play setup.
4.1 Site Selection
Choose a location on an exterior wall that allows for proper airflow and is structurally sound to support the fan's weight. Ensure adequate clearance for the automatic gravity shutters to open and close freely.
4.2 Mounting Steps
- Mark & Cut: Use the provided installation template to mark the precise opening dimensions on the wall. Carefully cut the opening.
- Insert Fan Unit: Gently slide the fan unit into the prepared opening from the exterior side, ensuring the shutters face outwards.
- Secure Fan: Secure the fan to the wall using appropriate fasteners (not included) through the designated mounting holes. Ensure the fan is level and firmly attached.
- Plug & Play: Connect the pre-wired power cord to a standard 120V electrical outlet. The fan is now ready for operation.

Image 4.1: Step-by-step installation process.
Video 4.2: Demonstration of the Amico Smart Thermostat Exhaust Fan installation and features.
5. Operation
The fan features a smart thermostat and 8-speed control for customized ventilation.
5.1 Thermostat Control
The intelligent probe (3ft wire) allows the fan to activate automatically when the ambient temperature reaches your preset level. Use the 'TEMP +' and 'TEMP -' buttons on the controller to adjust the desired temperature threshold.
5.2 Speed Adjustment
The fan offers 8 adjustable speeds. Use the 'SPEED +' and 'SPEED -' buttons to select the desired airflow intensity. The fan will operate at the chosen speed when activated by the thermostat or manually.
5.3 Power-Off Memory
The built-in Power-Off Memory function automatically saves your preferred temperature and speed settings, restoring them after a power interruption.
5.4 Automatic Gravity Shutters
The fan is equipped with automatic gravity louvers. These shutters open when the fan is operating to allow air exhaust and close tightly when the fan is off, preventing drafts, rain, and insects from entering the space.

Image 5.1: Smart Thermostat Control Panel.

Image 5.2: Automatic Gravity Shutters mechanism.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your exhaust fan.
6.1 Cleaning
- Monthly: Inspect the fan blades and shutters for dust, debris, or obstructions.
- Quarterly: Disconnect power and carefully wipe down the fan blades and interior surfaces with a damp cloth. Ensure the shutters are free of debris to operate smoothly.
- Do not use abrasive cleaners or solvents.
6.2 Inspection
- Periodically check the mounting hardware for tightness.
- Examine the power cord for any signs of damage or wear.
7. Troubleshooting
Refer to the following table for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on | No power; Thermostat not triggered; Controller off | Check power connection; Adjust thermostat setting; Press ON/OFF button |
| Reduced airflow | Blocked blades/shutters; Low speed setting | Clean blades/shutters; Increase speed setting |
| Shutters not opening/closing | Obstruction; Damaged mechanism | Clear obstruction; Contact customer support |
| Unusual noise | Loose parts; Debris in fan; Motor issue | Inspect and tighten; Clean fan; Contact customer support |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | DLT-E250EXK20IN |
| Size | 20 inch |
| Air Flow Capacity | 3800 CFM |
| Motor Type | 70W EC Motor (Brushless) |
| Speed | 1564 RPM |
| Number of Speeds | 8 |
| Noise Level | 65 dB |
| Voltage | 120 volts |
| Material | Galvanized Steel, Aluminum |
| Product Dimensions (D x W x H) | 22.8"D x 22.8"W x 6.3"H |
| Controller Type | Thermostat (Smart) |
| Installation Type | Wall Mount |
| Safety Certification | FCC |

Image 8.1: Key product specifications and dimensions.
9. Warranty and Support
Amico provides a 3-Year Limited Coverage for this product. For any questions, technical assistance, or warranty claims, please contact Amico customer support. Dedicated 24/7 customer support is available to assist you.
For additional information or to register your product, please visit the official Amico website or refer to the contact details provided with your purchase.