FasNSeal Flex DuraFlex SW Ventinox Ovalizing Flexible Liners Installation Instructions
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED CLEARANCES (AIR SPACES) TO COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE TO INSTALL ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. IMPORTANT: Read through all of these instructions before beginning your installation.
For the most up-to-date installation instructions, see www.duravent.com CONTENTS Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 4 Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 4 Permits . . . .. . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 4 Equipment And Materials. . . . . . . . . . . . . . . . .
APPLICATION M&G DuraVent's FasNSeal® Flex is a single strip double layer super-ferritic stainless steel for use with natural gas or propane Categories II, III, and IV appliances or Canada's Type BH Gas Vent Systems, having a maximum rated operating temperature of 480oF and a maximum positive pressure of 6" water column. FasNSeal Flex is the only flexible chimney liner listed to UL 1738 standard. DuraFlex® SW is a single, smooth wall flexible relining system for masonry chimney.
WARNING When the outside diameter of any thing walled liner is reduced beyond a certain point, it tends to develop "crinkles" on the major OD. The same is true when ovalizing FasNSeal Flex and DuraFlex SW, it only looks different: the inner layer may begin to "pucker". See Figure 1. While this does not reduce the structural stability of the liner, you should be aware of this possibility. CAUTION Wear gloves and eye protection when handling/cutting any liners.
liner is ovalized so that its minor dimension measures 6", the major dimension measures 11.8".
CAUTION These tables were developed specifically for Ventinox liners. Other lining materials behave differently when ovalized and may not assume major diameters or cross sectional areas.
M&G DURAVENT WARRANTY M&G DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used. DuraVent products are fully warranted if installed only by a professional installer.
