1. Introduction
Thank you for choosing the Buck Stove Model 21 Freestanding Wood Burning Stove. This non-catalytic stove is designed to provide efficient heating for spaces up to 1,800 square feet, with a heat output of up to 28,901 BTUs. It features a heat-activated blower for improved heat distribution and a traditional design with customizable door and leg options. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new wood stove.
2. Important Safety Information
Please read all instructions carefully before installing or operating your Buck Stove Model 21. Failure to follow these instructions could result in property damage, bodily injury, or even death. Always adhere to local and state building and fire codes.
- Proper Ventilation: Ensure the stove is connected to a properly sized and installed chimney or flue system. Regular inspection and cleaning of the chimney are crucial to prevent creosote buildup and chimney fires.
- Clearances: Maintain required clearances to combustible materials as specified in the installation instructions. Do not store flammable materials near the stove.
- Fuel Type: Only burn seasoned, dry wood. Do not burn trash, plastics, treated wood, or any other materials not approved for wood stoves, as this can damage the stove and create hazardous emissions.
- Child and Pet Safety: Keep children and pets away from the hot surfaces of the stove. Install a protective barrier if necessary.
- Carbon Monoxide: Install carbon monoxide detectors in your home.
- Ash Disposal: Dispose of ashes in a metal container with a tight-fitting lid, away from combustible materials.
3. Setup and Installation
The Buck Stove Model 21 is designed for freestanding installation. Proper installation is critical for safety and performance. Ensure your installation complies with all local and state codes.
3.1 Leg Choices
The stove comes with straight steel legs, available in different heights to suit your preference and installation requirements. These legs ensure the stove is level and securely placed, providing a stable base and simplifying placement.

3.2 Dimensions
Refer to the diagram below for the precise dimensions of the Buck Stove Model 21. Note that these dimensions do not include the 1 1/2 inch deep rear shield that comes with the stove.

3.3 Flue and Ventilation
The stove utilizes a natural vent (chimney) system. The flue measurement is 6 inches in diameter. Ensure your chimney system is compatible and installed according to manufacturer specifications and local codes.
3.4 Included Components
Your Buck Stove Model 21 includes the freestanding stove unit, straight steel legs (in your chosen size), and a heat-activated variable-speed blower assembly.
4. Operating Instructions
Operating your Buck Stove Model 21 correctly ensures efficient heating and safe performance.
4.1 Fueling the Stove
This is a non-catalytic wood burning stove. Only use seasoned, dry wood. The maximum firewood length recommended is 18 inches side to side or 11 inches front to back. Overfilling the firebox can reduce efficiency and increase creosote buildup.
4.2 Lighting the Fire
To light a fire, place crumpled newspaper or fire starters at the bottom of the firebox, followed by small kindling. Once the kindling is burning well, gradually add larger pieces of wood. Ensure adequate air supply for proper combustion.

4.3 Heat Activated Blower
The stove is equipped with a heat-activated variable-speed blower. This blower automatically turns on once the stove reaches a certain temperature, circulating warm air into your living space. The speed can typically be adjusted to control the airflow and heat distribution.
4.4 Door Color Options
The Buck Stove Model 21 offers customizable door colors to match your aesthetic preferences. Options include Black, Gold, or Pewter.

5. Maintenance
Regular maintenance ensures the longevity and safe operation of your wood stove.
- Ash Removal: Remove ashes regularly to prevent buildup that can impede airflow and reduce efficiency. Always use a metal ash bucket.
- Chimney Cleaning: Have your chimney inspected and cleaned by a certified professional at least once a year, or more frequently if creosote buildup is observed.
- Stove Inspection: Periodically inspect the stove for any signs of damage, cracks, or worn gaskets. Replace gaskets as needed to maintain an airtight seal.
- Blower Maintenance: Keep the blower free of dust and debris to ensure optimal performance.
6. Troubleshooting
This section addresses common issues you might encounter with your Buck Stove Model 21.
- Poor Draft/Smoke Back-up: Check for chimney obstructions, ensure the flue damper is open, and verify that the chimney is clean. Ensure adequate combustion air is available in the room.
- Low Heat Output: Ensure you are burning seasoned, dry wood. Check for proper air intake settings and ensure the firebox is not overfilled or underfilled.
- Excessive Fan Noise: While some operational noise from the heat-activated blower is normal, excessive or unusual noise may indicate a problem. Ensure the blower is clean and free of obstructions. If the noise persists or is unusually loud, contact customer support.
- Creosote Buildup: This indicates incomplete combustion. Ensure you are burning dry wood, maintaining a hot fire, and providing adequate airflow. Regular chimney cleaning is essential.
7. Specifications
Detailed specifications for the Buck Stove Model 21 (Model Name: 21NC).
| Feature | Specification |
|---|---|
| Brand | Buck |
| Model Name | Model 21NC |
| Power Source | Fuel Powered (Wood) |
| Material | Metal |
| Finish Type | Polished |
| Installation Type | Freestanding |
| Heat Output | 11,079 to 28,901 British Thermal Units |
| Color (Door) | Pewter (customizable to Black, Gold) |
| Ventilation Type | Natural Vent (Chimney) |
| Heating Coverage | 800 - 1,800 sq ft |
| Included Components | Electric Blower |
| Firebox Volume | 1.6 cubic feet |
| Maximum Firewood Length | 18" side to side or 11" front to back |
| Flue Measurement | 6" diameter |
| Certifications | EPA and Warnock Hershey to UL1482 certified; approved for Oregon and Washington state standards |

8. Warranty Information
The Buck Stove Model 21 comes with a 1-year replacement warranty and a 5-year limited parts warranty from Buck Stove. This warranty is valid upon manufacturer registration and requires installation compliance with local and state codes. Please retain your proof of purchase.
9. Customer Support
For technical assistance, warranty claims, or any questions regarding your Buck Stove Model 21, please contact the manufacturer directly. Ensure you have your model number (21NC) and purchase information available when contacting support.





