FasNSeal® & FasNSeal® W2 Single-wall and double-wall special gas vent systems. UL 1738 and ULC S636. FasNSeal® Flex Flexible chimney liner for special gas vent system. UL 1738 and UL 1777.
Specifications UL 1738 and ULC S636 Systems Applications FasNSeal and FasNSeal Flex is 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 480°F and a maximum positive pressure of 15” (FasNSeal Flex 6") water column.
Special Gas Vent | FasNSeal Typical Installations *updated* Installation Key 1 3 4 2 2 6 5 1 5 6 6 3 7 4 10 1 Rain Cap 9 Universal Condensate Drain 2 Storm Collar 10 Appliance Adapter 3 Variable Pitch Roof Flashing 11 Top Plate* 4 Vent Length 12 Male Flex Adapter 5 Adjustable Vent Length 13 FasNSeal Flex 6 Firestop/Flat Flashing 14 Female Flex Adapter 7 Horizontal Drip Tee 15 Standard Tee 8 Elbow Refer to our Typical Venting Installation drawings to select the app
FasNSeal | Special Gas Vent Commercial Applications 4 3 2 NOTES: ZONE 1. ALL WORKMANSHIP MUST MEET AND/OR EXCEED ALL JURISDICTIONAL REQUIREMENTS. 28.00 D 3. USE A NON-COMBUSTIBLE HANGER 8 EVERY SIX (6) FEET OF HORIZONTAL RUN. 11 26.00 13 12 ITEM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 2 7 6 5. REFER TO THE FASNSEAL INSTALLATION INSTRUCTIONS FOR ADDITIONAL REQUIREMENTS. 8 27.50 NOTE: Every effort has been made to Assure the accuracy of this information.
Special Gas Vent | FasNSeal FasNSeal® - Single-Wall Vent Length Use to vent category II, III and IV appliances.
FasNSeal | Special Gas Vent Adjustable Vent Length Use to add length to straight length of FasNSeal pipe. Adds 2”–14” of length. Requires at least 4” overlap for a secure connection. Available in Custom Lengths.
Special Gas Vent | FasNSeal FasNSeal Flex *updated description* Use to vent Category II,III and IV gas burning appliances. Listed to UL 1738. Can only be used in vertical or near vertical runs. Custom lengths are available for 3”-12” diameters. Minimum length of 10’ for custom orders. Maximum length of 50' for 3" - 9" diameter custom orders and 25' for 10" and 12" diameter custom orders. Must be ordered in 10' increments. Use with FasNSeal components only.
FasNSeal | Special Gas Vent Female Flex Adapter Use to connect FasNSeal Flex to FasNSeal rigid Vent Pipe at the top of the system.
Special Gas Vent | FasNSeal 88° Elbow Use to transition from a vertical to a horizontal run. Stabilizes a 2° pitch towards the condensate drain for good condensate management.
FasNSeal | Special Gas Vent 15° Elbow Offsets obstructions as needed. Allows for better condensate management and less back pressure.
Special Gas Vent | FasNSeal Standard Tee Use for a 90° offset, or to combine connections from two or more appliances into a common vent. Can also use as a condensate management point when used in conjunction with drain fitting. All Standard Tees are completely welded.
FasNSeal | Special Gas Vent Single-Wall Wye Use in place of any M&G DuraVent tee for a 45° angle instead of 90°; can be used as a manifold connection to gang multiple boilers into a common vent.
Special Gas Vent | FasNSeal Drain Fitting Use instead of Tee Cap to manage condensates at the bottom of a vertical run. For vent systems larger than 5”, use an IPS Drain Fitting. SIZE ORDER # STOCK # 3” 5⁄8” IPS Drain Fitting 3” FSDF3 810003116 4” FSDF4 810003170 5” FSDF5 810003226 Use to connect iron drain pipe to flow acidic condensates to a neutralization tank before disposal. Uses 1” NPT thread.
FasNSeal | Special Gas Vent Horizontal Drip Tee Use to manage condensate in horizontal runs. A B SIZE ORDER # STOCK # A B C 3" FSHDT3 810003119 6” 1 1⁄2” 3⁄8” 4" FSHDT4 810003173 6” 1 1⁄2” 3⁄8” C Bird Screen Use for 3” and 4” standard through-the-wall terminations. Check installation instructions for restrictions on horizontal terminations, such as minimum distance from windows and doors.
Special Gas Vent | FasNSeal Termination Box Use for horizontal through-the-wall terminations. Check installation instructions for restrictions on horizontal terminations, such as minimum distance from windows and doors. Larger sizes available, contact customer service.
FasNSeal | Special Gas Vent Wall Pass Through *MIN 4 ¼”, MAX 8 ½” MIN 5 ¾”, MAX 11 ½” A Wall Thimble Sleeve Extension A B Firestop/Flat Flashing Use for through-the-wall termination. Fits between standard wall studs. 3”-5” diameters accommodates wall thickness of 4 1⁄4” to 8 1⁄2”. 6”–16” diameters accommodate wall thickness of 5 3⁄4” to 11 1⁄2”.
Special Gas Vent | FasNSeal Support Clamp Use to support vertical and horizontal runs using threaded rod. Recommended every 10’ on vertical runs and every 6’ in horizontals. Use additional Support Clamps as needed.
FasNSeal | Special Gas Vent Rain Cap Use to terminate above the roof line. When terminating above 12” vent diameter use a Termination Cone.
Special Gas Vent | FasNSeal Storm Collar Use to create a weather tight seal between the pipe and flashing.
FasNSeal | Special Gas Vent Tall Cone Roof Jack Use as a heat shield within the flashing. Maintains center-line and clearance to combustibles. Use with Tall Cone Flashings.
Special Gas Vent | FasNSeal Stepped Increaser Use to increase vent diameter when space constraints are an issue. Available in custom size combinations. B 6” SIZE ORDER # STOCK # A B 3” x 4” FS34I 810003138 3” 4” 4” x 5” FS45I 810003195 4” 5” A Tapered Reducer Use to reduce vent diameter. Creates a smooth transition for an undisruptive flow. Maximum 10” diameter increase size on both sizes. Available in custom size combinations.
FasNSeal | Special Gas Vent Standard Wall Mount Kit Kit includes: Wall Thimble w/ Termination, Adjustable 90° Elbow, and Universal Appliance Adapter. Use to vent wall mounted boilers or tankless water heaters. Terminates through-the-wall only. Available in 3”, 4” and 5” vent diameters. Adjust vertically from 16 1⁄2” to 21” and horizontally from 8” to 12 1⁄2”. 3”& 4” compatible with most gas-burning appliances. 5” compatible with tankless. Not a UL Listed component.
Special Gas Vent | FasNSeal 90° Bird Screen Wall Mount Kit Kit includes: 90° Bird Screen Termination, Wall Thimble, Adjustable 90° Elbow, and Universal Appliance Adapter. Use to vent wall mounted boilers or tankless water heaters. 3” kit adjusts vertically from 14 1⁄2” to 19” and horizontally from 9” to 13 1⁄2”. 4” kit adjusts vertically from 14” to 18 1⁄2” and horizontally from 9” to 13 1⁄2”. Compatible with all Rheem gas appliances. 3” kit requires a FSA-RI-4.2 Adapter.
FasNSeal | Special Gas Vent Wall Mount Concentric Kit A C B Remote Concentric Kit A B C 255 DuraVent | www.duravent.com Use for through-the-wall termination with direct vent wall mounted gas appliances. Features a fixed right or left hand air intake snout and accommodates a maximum of 8” wall thickness. Check installation instructions for restrictions on horizontal termination, such as minimum distance from windows and doors. SIZE ORDER # STOCK # A B C 4” FDVWMT0403RH 810003077 4” 3” 8” max.
Special Gas Vent | FasNSeal W2 FasNSeal W2® - Double-Wall Vent Length Used for venting special gas burning Categories II, III and IV appliances. To calculate O.D. add 1” to vent diameter.
FasNSeal W2 | Special Gas Vent Adjustable Vent Length Use to add variable length to your straight length of FasNSeal pipe. Adds 2”–14” of length. Requires at least 4” overlap for a secure connection.
Special Gas Vent | FasNSeal W2 45° Elbow Offsets obstructions as needed. Allows for better condensate management and less back pressure.
FasNSeal W2 | Special Gas Vent Standard Tee Use for a 90° offset, to combine connections from two or more appliances into a common vent or as a condensate management point when used in conjunction with drain fitting. All Standard Tees have completely welded inner walls.
Special Gas Vent | FasNSeal W2 Tee Cap Use to cap Standard Tee, Branch Tee or Boot Tee. Remove Tee Cap to inspect the system; clean out debris.
FasNSeal W2 | Special Gas Vent Wall Thimble w/AVL B Use for through-the-wall termination. Fits between standard wall studs. 3”-5” diameters accommodates wall thickness of 4 1⁄4” to 8 1⁄2”. 6”–16” diameters accommodate wall thickness of 5 3⁄4” to 11 1⁄2”. AVL pipe allows for adjustability in length variance.
Special Gas Vent | FasNSeal W2 Support Clamp Use to support vertical and horizontal runs. Recommended every 10’ in the vertical run. Use additional Support Clamps as needed. When installing FasNSeal W2 with this component use 1” larger diameter, (e.g. 10” vent system, use 11” size).
FasNSeal W2 | Special Gas Vent Stepped Increaser Use to increase vent diameter when space constraints are an issue. Available in custom size combinations. B A Tapered Increaser SIZE ORDER # STOCK # A B 4” x 5” W2-45I 810003696 4" 5” 8” x 9” W2-89I 810003779 8” 9” Use to increase vent diameter. Creates a smooth transition for an undisruptive flow. FasNSeal W2 has a 10” max change in PRODUCT DESCRIPTION diameter. Available in custom size combinations.
Special Gas Vent | FasNSeal W2 Single-Wall Adapter Use to transition from double-wall pipe to single-wall pipe. To transition from single-wall to double-wall, please reference double-wall adapter available in single-wall FasNSeal section.
FasNSeal W2 | Special Gas Vent Bird Screen Use for 3” and 4” standard through-the-wall terminations. Check installation instructions for restrictions on horizontal terminations, such as minimum distance from windows and doors. A SIZE 23° Bird Screen STOCK # A 3" FSBS3 810003120 2” 4" FSBS4 810003174 2” Use for 5” to 16” through-the-wall termination. Deters rain and other elements from entering the vent system.
Special Gas Vent | FasNSeal W2 Storm Collar Use to create a weather tight seal between the pipe and flashing. When installing FasNSeal W2 with this component use 1” larger diameter, (e.g. 10” vent system, use 11” size).
FasNSeal | Adapters Appliances and Adapters Manufacturer Model Appliance Adapter Termination Adapter Buderus Aerco International Benchmark 2.0 GWS, 3.
Adapters | FasNSeal Appliances and Adapters Manufacturer De Dietrich Model Appliance Adapter Termination Adapter Laars Rheos 1200 - 2400 FSAAU6, 7, 10 a Rheos Plus 1200 - 2400 FSAAU6, 7, 10 a Summit 200, 250 FSA-PVC3 GT334A, GT335A, GT336A FSAAU7 GT337A, GT338A, GT339A FSAAU8 GT430-8A to GT430-10A FSAAU10 NeoTherm 285, 399, 500, 600 Standard Vent Pipe 4” GT430-11A to GT430-14A FSAAU12 NeoTherm NT 750, 850 Standard Vent Pipe 6” GT-530- 22 thru -25 FSAA18 MightyTherm 2 FSAAU Series
FasNSeal | Adapters Appliances and Adapters Noritz N-0751M FSAAU4 N-0751M-DV FSAAU4 Appliances and Adapters Paloma Patterson-Kelley FSA-NSC4 Advanced Design Boiler ADB-500 FSAAU6 ADB-750 thru 1501 FSAAU8, 10, 12 N-0931M FSAAU4 N-0931M-DV FSAAU4 Hi Delta 122 thru 2342 FSAAU4, 5, 6, 8, 12, 14, 16 N-0931M ASME FSAAU4 MVB 1003 FSAAU6 N-0931M-DV ASME FSAAU4 FSA-NSC4 FSAAU8 NH-1501-DV ASME FSAAU4 FSA-NSC4 MVB 2003, 1753, 1503, 1253 NH-2001-DV ASME FSAAU4 Pool heater CR-406A FSAAU9
Adapters | FasNSeal Appliances and Adapters T-M50 FSAAU5 Solaris FSA-TS6 LMGD Series FSA-LMGD4 a CWL-GS Series TBA Thermal Solutions Evolution Series FSA-HFA3 a, 4 a, 6 a, 8 a Triad 1600 (steam) FSAAU8 900 (steam) FSAAU8 Delta Performance FSA-TR3 Delta Performance Plus FSA-TR3 Prestige Solo 250 FSA-ULT3 Prestige Solo 399 FSA-ULT4 Prestige Solo 110 FSA-ULT3 Solo 250 FSA-ULT3 Solo 399 FSA-ULT4 U.S.
FasNSeal | Adapters Universal Appliance Adapter A Universal Appliance Adapter w/ Test Port 6¼" SIZE ORDER # STOCK # A SIZE ORDER # STOCK # A 3” FSAAU3 810003966 5 3⁄5” 9” FSAAU9 810003982 5 3⁄5” 4” FSAAU4 810003970 5 3⁄5” 10” FSAAU10 810003984 5 3⁄5” 5” FSAAU5 810003972 5 3⁄5” 12” FSAAU12 810003987 5 3⁄5” 6” FSAAU6 810003974 5 3⁄5” 14” FSAAU14 810003990 5 3⁄5” 7” FSAAU7 810003977 5 3⁄5” 16” FSAAU16 810003992 5 3⁄5” 8” FSAAU8 810003980 5 3⁄5” SIZE ORD
Adapters | FasNSeal W2 Appliance Adapter B C A W2 Appliance Adapter w/ Test Port 6¼" Metric Male Appliance Adapters A De Dietrich GT Series Appliance Adapter SIZE ORDER # STOCK # A B C 3” 4 4⁄5” 3” 6” W2-AA3 810003994 4” W2-AA4 810003996 4 4⁄5” 3” 6” 5” W2-AA5 810003998 4 4⁄5” 3” 6” 6” W2-AA6 810004000 4 4⁄5” 3” 6” 7” W2-AA7 810004002 4 4⁄5” 3” 6” 8” W2-AA8 810004005 4 4⁄5” 3” 6” 9” W2-AA9 810004006 4 4⁄5” 3” 6” 10” W2-AA10 810004008 4 4⁄5” 3” 6” 1
FasNSeal | Adapters 4" PVC to 4" FasNSeal Appliance Adapter SIZE ORDER # STOCK # A 4” FSA-4PVC-4FNS 810004019 5½” 4” A 4½” Aerco International Appliance Adapter SIZE ORDER # STOCK # A 6” FSA-AE6 810004022 11 4⁄5” 8” FSA-AE8 810004023 11 4⁄5” SIZE ORDER # STOCK # A 3” FSA-B3 810004024 4 4⁄5” 4” FSA-B4 810004025 4 4⁄5” SIZE ORDER # STOCK # A A Laars Endurance Series Appliance Adapter A Elbow Appliance Adapter A A 273 DuraVent | www.duravent.
Adapters | FasNSeal Fulton Boiler Appliance Adapter SIZE ORDER # STOCK # A 4” FSA-F4 810004028 4 9⁄10” 6” FSA-F6 810004029 4 9⁄10” A Heatfab-to-FasNSeal Appliance Adapter SIZE ORDER # STOCK # A SIZE ORDER # STOCK # A 3” FSA-HFA3 810004032 6” 7” FSA-HFA7 810004036 6” 4” FSA-HFA4 810004033 6” 8” FSA-HFA8 810004037 6” 5” FSA-HFA5 810004034 6” 9” FSA-HFA9 810004038 6” 6” FSA-HFA6 810004035 6” 10” FSA-HFA10 810006988 6” ORDER # STOCK # A 3” FSA-HFB3 810004039 6”
FasNSeal | Adapters Crown, Dunkirk & Modine Termination Appliance Adapter SIZE ORDER # STOCK # A 3” FSA-M3 810004042 2 1⁄2” 4” FSA-M4 810004043 2 1⁄2” SIZE ORDER # STOCK # A 6” FSA-MCF6 810004044 6” A Cleaver Brooks MCF Series Appliance Adapter 8” FSA-MCF8 810004045 6” 10” FSA-MCF10 810004046 6” 12” FSA-MCF12 810004047 6” SIZE ORDER # STOCK # A FSAMETEK3 810004048 6” A Dunkirk XEB Series & Pennco FSB Series Appliance Adapter 3” PART# 300880 300881 A Fulton Tapered
Adapters | FasNSeal Noritz NOM-DV Series Termination Appliance Adapter SIZE STOCK # A FSA-NSC4 810004049 4” ORDER # STOCK # A FSA-NYV3 810004050 4” ORDER # STOCK # A FSA-PDE3 810004051 6” SIZE ORDER # STOCK # A 4” FSA-PK4 810004052 8 3⁄4” 5” FSA-PK5 810004053 4 7⁄8” 8” FSA-PK8 810004054 5 7⁄8” 4” ORDER # A Slantfin Concept & New Yorker PVCG Series Termination Appliance Adapter SIZE 3” A Peerless PDE Model Appliance Adapter SIZE 6” A Patterson Kelly Mach Series Appli
FasNSeal | Adapters Tappered Patterson Kelly Mach Series Appliance Adapter SIZE 6” ORDER # STOCK # A FSA-PKT6 810004055 8” A Peerless & Lochinvar Appliance Adapter SIZE 3” ORDER # STOCK # A FSA-PSC/DE3 810004056 6” A Burnham & Quietside Termination Appliance Adapter SIZE ORDER # STOCK # A 3” FSA-PV3 810004057 3” SIZE ORDER # STOCK # A A PVC to FasNSeal Appliance Adapter A 277 DuraVent | www.duravent.
Adapters | FasNSeal Rheem/Ruud RTG & Paloma PTG/PH Series Appliance Adapter SIZE ORDER # STOCK # A 3” FSA-RI 810004058 3” SIZE ORDER # STOCK # A 7” FSA-SB7 810004059 6” 8” FSA-SB8 810004060 6” 10” FSA-SB10 810004061 6” A Buderus SB Series Appliance Adapter A Smith GV-100 Appliance Adapter 12” FSA-SB12 810004062 6” 14” FSA-SB14 810004063 6” SIZE ORDER # STOCK # A FSA-SMITH4 810004064 18” SIZE ORDER # STOCK # A 3” FSA-TR3 810004065 4” 4” A Triangle Delta Seri
FasNSeal | Adapters Thermal Solutions Appliance Adapter SIZE ORDER # STOCK # A 6” FSA-TS6 810004066 4 1⁄10” SIZE ORDER # STOCK # A FSA-TTA4 810004067 3” ORDER # A A Takagi TK-TV Series Termination Appliance Adapter 4” A Weil McLain Ultra Series Appliance Adapter SIZE STOCK # 3” FSA-ULT3 810004068 3 3⁄5” 4” FSA-ULT4 810004069 3 3⁄5” A Columbia LVGD Series Appliance Adapter A 279 DuraVent | www.duravent.
Adapters | FasNSeal Viessmann Vitoden Series Appliance Adapter SIZE ORDER # STOCK # A 3” FSA-V3 810004075 3” 4” FSA-V4 810004076 3” A Weil McLain GV Model Appliance Adapter SIZE 3” ORDER # STOCK # FSA-WEIL-GV3 810004070 A 4 1⁄2” A Weil McLain Tee Appliance Adapter SIZE 3” ORDER # STOCK # A B FSA-WEIL-GVTEE3 810004071 5” 7 3⁄10” A B Weil McLain CG Series & Williamson Thermoflow GWI Series Appliance Adapter SIZE 3” ORDER # STOCK # A FSA-WM-CG3 810004072 3” A 800-835-4
FasNSeal | Adapters Fulton Muffler Inlet Muffler SIZE ORDER # STOCK # A 4” FSAAM4 810004077 5 9⁄20” 6” FSAAM6 810004078 5 9⁄20” SIZE ORDER # STOCK # A A Female-to-Male Jeremias Muffler 7” FSA-180F-7M 810004079 5 4⁄5” A Male-to-Female Jeremias Muffler A 281 DuraVent | www.duravent.
