1. Important Safety Information
Please read all instructions carefully before installation and operation. Retain this manual for future reference.
Electrical Safety
- Ensure the power supply is disconnected before performing any installation or maintenance.
- All electrical wiring must be performed by a qualified electrician in accordance with local codes and standards.
- This appliance must be properly grounded.
General Safety
- This range hood is intended for domestic use only.
- Do not operate the range hood without filters in place.
- Clean grease filters regularly to prevent grease buildup and fire hazards.
- Never flambé under the range hood.
- Always turn on the fan when cooking at high heat or when cooking flaming foods.
2. Package Contents
Verify that all components are present and undamaged before installation.
- FIREGAS FGS-UBF39A590AC 36 inch Black Painted Stainless Steel Range Hood
- Multi-layer Aluminum Filter (pre-installed)
- Recirculation Sheet (for ductless mode)
- Circular Air Outlet (for ducted mode)
- Installation Manual
- Installation Drawing
- Screws and Wall Anchors
- Wires (no plug, FGS-TF39-DYX plug sold separately)

Image: All components included in the FIREGAS FGS-UBF39A590AC range hood package, including the hood, filters, recirculation sheet, circular air outlet, manual, drawing, screws, and wires.
3. Product Overview and Features
The FIREGAS FGS-UBF39A590AC is a 36-inch under cabinet range hood designed for efficient kitchen ventilation.
- Dimensions: 36"W x 17.5"D x 4.7"H (Slim profile for space-saving).
- Material: Black Painted Stainless Steel (430-grade).
- Airflow Capacity: 300 Cubic Feet Per Minute (CFM).
- Fan Speeds: 2-speed exhaust fan (Low and High).
- Noise Level: Less than 57dB at high speed.
- Lighting: 1 x 2W Energy-saving LED light.
- Filters: Multi-layer aluminum mesh filters, dishwasher safe and reusable.
- Ventilation Type: Ducted or Ductless (Convertible).
- Controls: Easy 2-button push controls.

Image: Front view of the FIREGAS FGS-UBF39A590AC Black 36 inch Under Cabinet Range Hood.

Image: Detailed dimensions of the FIREGAS FGS-UBF39A590AC range hood, showing width, depth, and height, along with top and back vent measurements.
4. Installation
The range hood can be installed in either ducted or ductless (recirculation) mode. Choose the appropriate method for your kitchen setup.
4.1 Pre-Installation Steps
- Ensure the power supply to the installation area is turned OFF at the circuit breaker.
- Remove the corner beads and chimney connector if present from the unit.
- Determine the desired venting option (ducted or ductless).
4.2 Ducted Installation (Top or Back Venting)
For ducted installation, the range hood exhausts air outside your home through a duct system.
- Remove the material to open the power cord hole and the air outlet at the top or back of the range hood.
- Install the circular air outlet (damper) to the chosen vent opening on the range hood using screws.
- Connect the exhaust pipe (not included) to the circular air outlet.
- Mount the range hood under the cabinet or against the wall using the provided screws and anchors.
- Connect the range hood's wiring to your household electrical wiring (black to black, white to white, green/bare to ground). Secure connections with wire nuts.

Image: Illustration of top, back, and front ventilation options for the range hood, indicating where to install the circular air outlet or charcoal filters.

Image: Step-by-step diagram illustrating the wire connection method for the range hood, ensuring wires are not exposed.
4.3 Ductless (Recirculation) Installation
For ductless installation, the range hood filters the air and recirculates it back into the kitchen. Charcoal filters (FGS-TF39-LW, sold separately) are required for this mode.
- Ensure the recirculation sheet is properly installed to direct filtered air out the front vents.
- Install charcoal filters (sold separately) onto the motor fan.
- Mount the range hood under the cabinet or against the wall using the provided screws and anchors.
- Connect the range hood's wiring to your household electrical wiring.

Image: Visual comparison of the range hood operating in Exhaust Mode (ducted) and Recirculation Mode (ductless).
4.4 Installation Videos (General Guidance)
The following videos provide general guidance on range hood installation. Please refer to the specific instructions in this manual for your model.
Video: General installation steps for an under cabinet range hood, including unboxing, preparing the unit, and mounting. (Source: globalelectricaltrading)
Video: Overview of a 36-inch kitchen range hood, demonstrating features and installation process. (Source: IsEasyAppliances)
5. Operation
The FIREGAS range hood features simple push-button controls for fan speed and lighting.
5.1 Fan Operation
- Press the 'Low Speed' button for gentle ventilation, suitable for simmering or light cooking.
- Press the 'High Speed' button for powerful extraction, ideal for frying or strong odors.
- Press the 'Off' button to turn off the fan.

Image: Visual representation of the two fan speed settings (Low and High) and their recommended uses.

Image: Close-up view of the push-button controls for fan speed and light on the range hood.
5.2 LED Light Operation
- Press the 'Light' button to turn the LED light on or off.

Image: Features of the 2-watt LED light, highlighting its energy-saving, bright, non-flashing, and durable qualities.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your range hood.
6.1 Cleaning Aluminum Filters
- Aluminum mesh filters should be cleaned frequently (every 2-4 weeks depending on usage).
- To remove: Pull the plastic strip on the baffle filter with one hand, and pull the filter out from the two upper buckles with the other hand.
- Clean filters using warm, soapy water or in a dishwasher. Avoid using abrasive cleaners or brushes.
- To install: Insert the filter into the lower buckle, then hold the filter with both hands, bend the filter slightly towards the unit, and push it into the upper buckles.

Image: Close-up of the multi-layer aluminum filter designed to effectively capture oil and grease.

Image: Detailed view of the aluminum mesh filter, showing its construction and handle for easy removal.
6.2 Cleaning Exterior Surfaces
- Clean the exterior of the range hood with a soft cloth and mild detergent.
- Avoid using abrasive cleaners or pads that could scratch the surface.

Image: A hand wiping the sleek black surface of the range hood, demonstrating ease of cleaning.
7. Troubleshooting
If you encounter issues with your range hood, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan not operating | No power supply; Fan switch off; Motor fault | Check circuit breaker; Turn on fan switch; Contact customer service |
| Light not working | Light switch off; LED bulb fault | Turn on light switch; Replace LED bulb (if applicable); Contact customer service |
| Poor suction | Clogged filters; Improper ducting; Obstruction in airflow | Clean/replace filters; Check ductwork for kinks/blockages; Ensure recirculation sheet is correctly installed for ductless mode |
| Excessive noise | Loose components; Improper installation; Damaged fan blade | Check for loose screws/parts; Re-install correctly; Contact customer service |
8. Specifications
- Model: FGS-UBF39A590AC
- Dimensions (D x W x H): 17.5" x 35.9" x 4.7"
- Air Flow Capacity: 300 CFM
- Noise Level: ≤ 57 Decibels
- Number of Speeds: 2
- Voltage: 110 Volts
- Wattage: 52 watts
- Material: Stainless Steel
- Filter Type: Mesh (Multi-layer Aluminum)
- Mounting Type: Under Cabinet Mount
- Ventilation Type: Convertible (Ducted/Ductless)
- Light Source Type: LED (2W)
- Item Weight: 13.9 Pounds
- Certification: ETL
9. Warranty and Support
The FIREGAS FGS-UBF39A590AC range hood comes with a 1-year warranty from the date of purchase.
For technical support, warranty claims, or any questions regarding your product, please contact FIREGAS customer service. Refer to the contact information provided in your installation manual or visit the official FIREGAS website.

Image: Icons representing FIREGAS customer support services: Quick Response, After-Sales Support, Lifetime Technical Help, and Continuous Improvement.