The M-Flex stainless steel chimney liner is a 316L/Ti manufactured product designed for chimney flue applications. It is a seven-ply liner with ten groove corrugations per seam, intended to provide both flexibility and strength. The liner is UL Listed and tested to Code 1777, utilizing prime stainless steel in its construction. Installation requires careful attention to safety precautions and proper measurements. This article details the installation process and key features based on available documentation.
Liner Specifications and Features
The M-Flex chimney liner is presented as a leading product in the industry for its strength and flexibility. It is manufactured in the U.S.A. and is constructed from 316L/Ti stainless steel. The liner’s seven-ply construction, combined with ten corrugations per seam, contributes to its overall durability and ease of installation in various chimney configurations. The product is UL Listed, indicating it has undergone testing to meet specific safety standards as defined by Code 1777.
Preparing the Liner for Installation
Prior to installation, the M-Flex liner requires preparation. The documentation emphasizes caution due to the potential for sharp metal edges; therefore, protective gloves are recommended when handling the liner and its components. It is crucial to ensure the chimney is completely cleared of all debris before beginning the installation process.
The liner should be removed from its packaging and straightened on a flat surface. The bottom termination connector, which may be a tee or another appliance connecting device, must then be attached. The hose clamp on the connector should be tightened securely, but not over-tightened.
Installing the Liner
The installation process may require multiple personnel due to the weight and length of the liner. Safety precautions are paramount when working on a roof. In some cases, a rope connected to a pulling cone, or directly to the bottom connector, may be necessary. A second person positioned at the bottom of the chimney can pull the rope while the individual on the roof guides the liner down the chimney flue.
Maintaining the liner’s centered position within the chimney opening is essential to prevent damage to any existing insulation or the liner itself. Once the bottom connector reaches its intended position, the top of the liner needs to be cut to length. An additional four inches should be added to the measurement equal to the height of the chimney crown.
For liner lengths exceeding 35 feet, support is recommended. This can be achieved using angle iron to support the bottom connector.
Cutting the Liner
Precise cutting of the liner is necessary for a proper fit. After measuring and accounting for the additional length for the chimney crown, the liner should be cut using a pair of tin snips. Caution must be exercised to avoid creating jagged or pointed edges. A clean edge is essential for safety.
Completing Top Termination
Documentation provides limited details regarding the completion of the top termination process beyond the initial cutting step.
Available Documentation
Several documents are available for download, including installation instructions for CB & AL liners, DB liners, Premier Damper Caps, and Direct Vent Kits. Warranty information for both M-FLEX CB and M-FLEX DB liners is also available. Additionally, custom worksheets for chase covers and pricing are accessible, though a password is required for the latter. A brochure is also available, requiring password-protected access.
Safety Considerations
The documentation highlights the importance of safety throughout the installation process. Protective gloves should be worn when handling the liner due to the potential for sharp edges. Working on a roof inherently carries risks, and appropriate safety measures should be taken. The liner should be handled with sufficient manpower to prevent accidents. Additionally, care should be taken during the cutting process to avoid creating hazardous edges.
Conclusion
The M-Flex stainless steel chimney liner is a UL Listed product designed for durability and ease of installation. Proper preparation, careful measurement, and adherence to safety guidelines are crucial for a successful installation. Available documentation provides guidance on installation procedures and warranty information. The liner’s specifications, including its seven-ply construction and 316L/Ti stainless steel material, contribute to its performance and longevity.