FasNSeal Single-Wall vent for Category II, III, and IV appliances FasNSeal 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 THAT FasNSeal BE INSTALLED 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 Introduction, important notice, general installation FasNSeal FASNSEAL SINGLE-WALL VENT FOR CATEGORY II, III, AND IV APPLIANCES Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Vent Size and Length, Adjustable Vent Length. . . . . . . . . . . . . . . . .6 Joint Connection, Appliance Connection . . . . . . . . . . . . . . . . . . . 7 Condensate Drains . . . . . . .
Introduction M&G DuraVent's FasNSeal is a stainless steel vent system for Category II, III, and IV gas-fired appliances. FasNSeal is listed to UL 1738 and ULC S636 with a maximum rated operating temperature of 480°F (249°C) and a rated pressure of 15 in-w.c. FasNSeal® must be installed by an experienced professional familiar with the operation and maintenance of heating appliances and venting.
a drain fitting is supplied with the appliance, install a FasNSeal® Drain Fitting. •More than one Category II, III or IV appliance may not be connected into the same vent system, unless the appliance manufacturer specifically approved such a system and the appliances are designed for multiple venting. Cat. II, III or IV appliances may not be common vented with Cat. I, natural draft appliances. •FasNSeal® must not come in contact with plumbing or electrical systems.
VENT SIZE AND LENGTH Refer to the appliance manufacturer’s installation instructions for proper size and vent configuration. Follow any horizontal/ vertical length and height limitations, minimum clearances (air space) to combustibles, or specifications for the use of Elbows, Tees, or Drain Tees. Although our Adjustable Vent Length and Wall Thimble are designed to eliminate cutting, there may be occasions when you must field cut a vent length.
JOINT CONNECTIONS Joint connection is correct when half of the bead on the male end is covered by the flared edge of the female end. Correct Joint Connection. Male/Female sections fully engaged. The female end of each FasNSeal® component incorporates a sealing gasket and a mechanical locking band. Examine all components prior to installation. Gaskets must be in proper position or flue gases could leak and result in carbon monoxide poisoning. 1. Insert the male end into the female section.
Termination Tee or Bird Screen 6’ Max. Horizontal Drain Tee or Drain Fitting with Tee Elbow Hanger Strap Wall Thimble To Drain Dispose of Condensate According to Local Codes Appliance Adapter Appliance Horizontal Through-The-Wall Installation Figure 3 HORIZONTAL, THROUGH THE WALL INSTALLATION • For a typical Horizontal Through the Wall installation, refer to Figure 3. When venting through a sidewall, terminate the system not less than 12” (.
Inside Building Surface Part B Outside Building Surface 1.0” 1.5” To Appliance Part A To Termination 9.0” + 3.0” 2” x 6” Stud (Combustibles) Wall Thimble Installation Figure 4 Category II, III, or IV appliances) of no less than 1/4” (6.4mm) every 12” (305mm) to prevent collection of condensates, formation of ice build up, or blockage at any location within the assembly.
RAINCAP STORM COLLAR ADJUSTABLE FLASHING SUPPORT CLAMP FIRESTOP HANGER STRAP APPLIANCE ADAPTER FIRESTOP HORIZONTAL DRAIN TEE OR DRAIN FITTING W/TEE TO DRAIN. DISPOSE OF CONDENSATES ACCORDING TO LOCAL CODES APPLIANCE Vertical Through the Roof Installation Figure 5 Vent Length Storm Collar Flat to 9/12 Variable Pitch Flashing Roof Jack 1.0” 0.5” VERTICAL, THROUGH THE roof INSTALLATION • For a typical Vertical Through the Roof installation, refer to Figures 5 and 6. Terminate the system 6’ (1.
Jack and any combustibles. 4. When installing on a pitched roof, place the Roof Flashing under the roofing material up slope from the vent and above the roofing material below the vent. Seal as required. Rain Cap Storm collar 12” Minimum Steel Plate 5. Install a Roof Jack into the Roof Flashing to ensure proper ventilation. Tension Wire 6. Now begin installing FasNSeal® from the appliance upward. 7. Once FNS® reaches the roof line, slide the Storm Collar onto the vent length.
FasNSeal Vent Length Steel plate 1/2" Hole larger than oter wall of vent 1/4" Holes degrees Between Holes 180° ÷ #Clamps Figure 8 important tension wire clamp halfshell screw nut nut Steel Plate 1/4" Eye bolt Cable clamp Tension wire Figure 10 12 The loads, plate and cable thickness, as well as the eyelet sizes specified in these instructions are representative and must be calculated for each individual application.
clamps, ensuring that they are fastened tightly around the vent. Each support clamp beyond the first must be rotated. To calculate the angle of rotation, divide 180 by the total number of support clamps required. 4. Once the vent stack has been lowered into the chimney, install a steel support plate over the top of the chimney. Run the tension wires through the anchors as shown in Figure 10. 5. Install a FasNSeal storm collar on top of the steel support plate.
add silicone in channel 7. Repeat steps 3 through 5 for other end. 8. Before installation, let cure for a minimum of 24 hours or follow the cure time called out by the silicone manufacturer. Basic FasNSeal Flex Liner Installation 1. Determine the required location and opening in the masonry chimney. For a basic FasNSeal Flex installation the opening must be large enough for the mortar sleeve and Male Flex Adapter to easily pass through. If a Tee application is necessary, a larger hole may be required.
Instructions 1. If a tee is needed lower down the liner as in Step 3 of the previous section to the proper location, even with the opening in the chimney. 2. Attach the appropriate drain fitting to the bottom of the Tee Body. top plate sealant existing masonry chimney 3. Be sure to remember to connect the condensate drain at the bottom of the stack. See previous section on Condensate Drains for instructions.
The FasNSeal Vent Kit is designed for sidewall venting of instantaneous tankless water heaters and wall hung boilers. This kit contains three easy to install parts that provide the ability to vent through any combustible wall. The Vent Kit is compatible with standard FasNSeal® (FNS) products. Be sure to read these instructions completely, and those of the appliance itself, before proceeding with the installation of this kit. Local codes and regulations may be applicable and should always be adhered to.
• Proper clearances to combustibles must be maintained over the entire length of the system (refer to Figure 17). • Never install FNS on an appliance that is not listed for use with a Special Gas Vent or Type BH vent. • Additional FNS vent lengths can be installed for extended runs. The overall equivalent length of the system shall not exceed the specifications of the appliance manufacturer’s instructions. • Horizontal vent runs shall have a slope of no less than ¼ inch (6.
FasNSeal Vent Kit INSTALLATION INSTRUCTIONS 1. Examine all components for possible shipping damage prior to installation 2. Determine the location and cut an opening for the wall thimble (refer to Figure 18). • Position Part A into the opening so that angled hood is located on the outside of the structure. • Apply a bead of silicone between the structure and mounting plate before nailing or screwing Part A to the outside surface of the building.
entire system to ensure all joints are secured and sealed correctly. The seams and joints must be checked for gas tightness when using the venting system with Category III or IV appliances and for free movement of flap. M&G DuraVent recommends that a qualified inspector check the entire system at least once annually following the initial installation. The installation must conform to the requirements of the appliance manufacturer’s instructions, the National Fuel Gas Code, and local codes and regulations.
M&G DuraVent limited lifetime 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.
