Related Manuals for DuraVent Type B
Summary of Contents for DuraVent Type B
- Page 1 Installation Instructions Round and Oval Type B GasVent Systems for use with natural as or liquid propane category I and draft hood equipped appliances and appliances listed to use Type B Gas Vent.
- Page 2 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 TYPE B GAS VENT BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. NOTE: READ THROUGH ALL OF THESE INSTRUCTIONS BEFORE BEGINNING YOUR INSTALLATION.
- Page 3 TypE B GaS VEnT InSTaLLaTIOn InSTRucTIOnS CONTENTS Round B Vent, General Information, Planning ......4 Steps for Typical Installations ........7 Bucket Support .
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Page 4: General Information
5. Combustion Air. Refer to appliance for category II, III, or IV gas appliances. installation instructions and local building Type B Vent shall not be used to vent flue codes to ensure compliance with required products from incinerators, combination gas/... - Page 5 HIGH WInD cap DuRacap TOp DOTTED L InES SHOW pOSSIBLE OFFSET In aTTIc SpacE cEILInG SuppORT / STOR M FIRESTOp cOLLaR TOTa L 90° aDJuSTaBLE VEnT SEE TaBLE 2 ELBOW FLaSHInG HEIGHT B-VEnT TEE B-VEnT pIpE WaTER HEaTER cOnnEcTOR RISE FuRnacE 1 IncH MInIMuM FIRESTOp...
- Page 6 TABLE 1 PIPE SIzE STOCK FRAMED INSIDE NUMBER DIMENSIONS (x & Y) OF CEILING FIG.4 1 IncH MInIMuM TOTaL SUPPORT cLEaRancE VEnT B-VEnT WyE (aLL SIDES) HEIGHT 3 IncH 1440 6"x6" 4 IncH 1441 7"x7" B-VEnT uSED aS cOnnEcTOR 5 IncH 1442 8"x8"...
- Page 7 Thimble with insulation, although an RTV-type (OpTIOnaL) sealant may be applied around the flange and nail heads if desired. 5. Pipe Assembly. Sections of DuraVent round pipe are joined together by lining up the Figure 8 female end of the locking lug with the male end slot, pushing them together, and turning 16”...
- Page 8 Some appliances require Type B-Vent as a complete dedicated system from the flue collar of the appliance to the termination of the vent to the outside atmosphere. DuraVent’s STEp 1 Duraconnect, a uL listed flexible connector, can Figure 9 be used if single wall connectors are allowed.
- Page 9 DuraVent does not recommend installation of B-Vent pipe on the outside wall of a building, particularly in cold climates. If it is necessary to do this, enclose the outside portion of the system in a chase, as shown...
- Page 10 TABLE 2 gas vent systems using vent caps listed by underwriters labroratories may terminate in accordance with this vent termination table ROOF PITCH MINIMUM HEIGHT FEET METERS FLaT TO 7/12 OVER 7/12 TO 8/12 0.46 OVER 8/12 TO 9/12 0.61 OVER 9/12 TO 10/12 0.76 Figure 13...
- Page 11 assembled unit are shown in Figure 15. The combination cap is designed to accommodate roof pitches from flat to 6/12, and is available for 3” through 6” diameter B-Vent pipe. 2. Location. Locate the point in the underside of the roof where the system is to penetrate, 1 1/2 to 3 using a plumb bob or level.
- Page 12 1. Description. The male and female adaptors enable an installer to connect DuraVent B-vent components to an existing Type B gas vent system manufactured by the following companies: american Metals products, Household Mfg, Hart & cooley Mfg, Metal Fab, Inc, White Metal products, air Jet, Mitchell Metal products.
- Page 13 B-VEnT aDapTER system up towards the termination using Dura- (FEMaLE) Vent Type B Gas Vent, connect a Male adaptor to the last section of the system, as shown in EXISTInG Figure 23, insuring that the inner liner of the SySTEM...
- Page 14 (c). Connector. Read the appliance manufacturer’s instructions for connecting the Flex pipe to the appliance. In most cases, a Draft Hood connector will be required as shown in Figure 26. If you are not sure, contact the appliance manufacturer for clarification. place the appliance out in front of the fireplace area, as shown in Figure 27, and install the 15 IncHES...
- Page 15 (a). Locate Appliance. Set the appliance roof (more than 7/12 pitch) ,use the height as stated in Table 2. in it’s desired position, and mark the center (g). Flashing. Bend and trim the base of the of the hole where the lateral pipe Section Tall cone Flashing so it fits onto the top of the is to pierce the masonry chimney.
- Page 16 procedure is to make the hole only large OPTIONAL STORM COLLAR enough for the pipe Section to pass through, HIGH WIND WITH SCREWS and construct an access gate on the other FLASHING side of the masonry chimney. Do not mortar directly to the pipe, but use a Mortar Sleeve instead.
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Page 17: Troubleshooting
Table of this sheet, contact your DuraVent Dealer, 2. Inadequate combustion air is also a major Distributor, or DuraVent’s Engineering cause of downdraft problems. - Page 18 DuraVent B-Vent system. of corrosion are listed below: If in doubt call a you will need to inspect the cap, Vent pipe, professional to inspect the vent. connector pipe, and the connection to the (a) If the vent system is located in an area appliance.
- Page 19 • attic Furnaces to terminate the vent. It is locked to the top section of pipe, and gives protection against Type B gas vents shall not be used for venting the entrance of rain, snow, debris, and birds. incinerators, conversion burners, combination...
- Page 20 HIGH WInD cap TABLE 1 Minimum Roof Pitch Height* FLaT TO 7/12 STORM OVER 7/12 TO 8/12 cOLLaR SEE TaBLE 1 FLaSHInG OVER 8/12 TO 9/12 OVER 9/12 TO 10/12 OVER 10/12 TO 11/12 3.25 OVER 11/12 TO 12/12 1 IncH MInIMuM OVER 12/12 TO 14/12 cLEaRancE OVER 14/12 TO 16/12...
- Page 21 a gas vent support or firestop spacer must be provided where the vent passes through the ceiling. The ceiling opening is framed, using the same sized lumber as the existing joists, to fit around the raised edge of the gas vent support, which is pushed up into the ceiling from below.
- Page 22 4-INCH OVAL GAS VENT FOR INSTALLATION IN 2” x 4” STUD 1 IncH MInIMuM WALLS cLEaRancE TO cOMBuSTIBLES MH6375 CATEGORY I APPLIANCES ONLY Gas vent shall extend at least 2 feet above the highest point where it passes through the roof, and at least 2 feet higher than any portion of the building within 8 feet.
- Page 23 DuRa-VEnT DuRa-VEnT STORM cOLLaR STORM cOLLaR ROOF FLaSHInG ROOF FLaSHInG nOTE: OFFSET MuST BE OVaL-TO-ROunD OVaL-TO-ROunD SuppORTED aDapTER aDapTER BW VEnT cEILInG pLaTE pIpE cEILInG pLaTE BW VEnT pIpE OVaL BaSE pLaTE SuppORT 2” X 4” 2” X 4” STuDS STuDS 16”...
- Page 24 5-INCH OVAL GAS VENT FOR INSTALLATION IN 2” x 4” STUD WALLS STORM cOLLaR MH6375 CATEGORY I APPLIANCES ONLY Where pipe passes through the roof, maintain ROOF FLaSHInG 1-inch minimum clearance to all combustible materials. Install oval flashing, storm collar, and oval vent 1 IncH MInIMuM cap.
- Page 25 HIGH WInD cap DuRa-VEnT MaLE EnD STORM cOLLaR ROOF SEE TaBLE 1 FLaSHInG FEMaLE EnD SuppORT 1 IncH MInIMuM cLEaRancE TO cOMBuSTIBLES To assemble, align the two pieces, and push OVaL-TO-ROunD aDapTER together until they click. Use only vents labeled “For Exterior Use FIRESTOp SpacER Only”, above roofline.
- Page 26 6-INCH OVAL GAS VENT FOR INSTALLATION IN 2” x 6” STUD WALLS STORM cOLLaR MH6375 CATEGORY I APPLIANCES ONLY Ensure at least 1 inch clearance to all ROOF FLaSHInG combustibles, including the area the pipe passes through the roof. Install oval flashing, storm collar, and oval vent 1 IncH MInIMuM cap.
- Page 27 HIGH WInD cap DuRa-VEnT MaLE EnD STORM cOLLaR ROOF SEE TaBLE 1 FLaSHInG FEMaLE EnD SuppORT 1 IncH MInIMuM cLEaRancE TO cOMBuSTIBLES To assemble, align the two pieces, and push OVaL-TO-ROunD aDapTER together until they click. Use only vents labeled “For Exterior Use FIRESTOp SpacER Only”, above roofline.
- Page 28 (10) years. This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney fires, acts of God, or any product that was: (1) purchased other than from an authorized DuraVent dealer, retailer or distributor;...
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