The rear flue, also known as the rear exit flue, is a common method for venting wood burning stoves. In this straightforward guide, we’ll cover the technical details and considerations for the rear flue installation, ensuring you can grasp the concept whether you’re a technical expert or a first-time wood stove user.
1. What is a Rear Flue?
A rear flue refers to the location where the stovepipe or flue pipe exits the wood burning stove. Instead of the flue pipe connecting on top of the stove (as in a top exit flue), it exits from the back of the stove. This configuration can be advantageous for certain installation scenarios and aesthetics.
2. Benefits of a Rear Flue:
Space Saving: For situations where clearances are limited, a rear flue allows you to place the stove closer to the wall without sacrificing safety.
Aesthetic Appeal: Rear flues often create a cleaner, more streamlined look, as the flue pipe is hidden behind the stove.
3. Installation Steps:
a. Determine Clearance Requirements:
- Check the manufacturer’s guidelines for specific clearance requirements, both from the stove’s rear and sides to combustible materials like walls and furniture.
b. Position the Stove:
- Place the wood burning stove in the desired location, ensuring it complies with the clearance requirements.
c. Install the Flue Pipe:
- Attach the stovepipe to the rear flue collar on the stove. Ensure a secure and airtight connection.
d. Route the Flue Pipe:
- The flue pipe should be installed at a slight upward angle from the stove to the wall or chimney. This angle ensures that any condensate or creosote flows back into the stove and doesn’t leak out.
e. Install a Thimble:
- If you are passing the flue pipe through a wall to reach the chimney, use a thimble to maintain proper clearance and create a safe passage.
f. Connect to the Chimney:
- If you are connecting to a chimney, ensure that the chimney is in good condition and compliant with local regulations.
4. Safety Precautions:
Regularly inspect and clean the flue pipe to prevent creosote buildup, which can lead to chimney fires.
Install a flue damper to regulate draft and control the flow of air through the stove and flue.
Use high-quality, approved flue pipe materials to ensure safety and compliance with local codes.
5. Considerations:
The use of a rear flue may limit your choice of stoves, as not all models are designed for this configuration. Ensure your stove is compatible with a rear flue.
Properly insulate the wall or floor penetrations if the flue pipe passes through walls or floors to prevent heat transfer and protect combustible materials.
In conclusion, a wood burning stove with a rear flue is a practical and visually appealing option for many installations. Careful adherence to clearance requirements, proper installation, and regular maintenance are essential to ensure safe and efficient operation. When in doubt, consult a professional to ensure your wood stove and flue system are installed correctly and comply with local regulations.