All-Fuel Chimney System 5” to 8” diameter DuraTech® Installation Instructions
A MAJOR CAUSE OF VENT RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED CLEARANCES TO COMBUSTIBLE MATERIALS. IT IS OF THE UTMOST IMPORTANCE THAT DOUBLE WALL DURATECH BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. NOTE: Read through all of these instructions before beginning your installation. Failure to install as described in this instruction will void the manufacturer’s warranty, and may have an effect on your homeowner’s insurance and UL listing status. Keep these instructions for future reference.
For the most up-to-date installation instructions, see www.duravent.com CONTENTS DuraTech® ALL-FUEL CHIMNEY SYSTEM, 5” TO 8” DIAMETER CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 NON-COMBUSTIBLE INSULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PERMITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 DURATECH CHIMNEY APPLICATIONS . . . . .
CLEARANCES Always allow at least a 2-inch clearance between DuraTech Chimney Pipe and any combustible materials. Combustible materials include lumber, plywood, sheetrock, plaster and lath, furniture, curtains, electrical wiring and building insulation.
manufacturer’s instructions and safety manual in regards to fuels. Not all appliances are equipped to burn coal. Coal with a low sulfur content will reduce the possibility of corrosion. Care must be taken to avoid over-firing, which can damage the appliance, stovepipe and chimney system. 2 FT MIN ABOVE HIGHEST POINT OF ROOF WITHIN 10 FT 10 FT 3 FT MIN ABOVE ROOF Mobile Homes: Please read the appliance manufacturer’s instructions and safety manual carefully.
rating of not less than one hour when such chimneys are located in a building less than 4 stories in height, and not less than 2 hours when such chimneys are located in a building more than 4 stories in height.” In Canada, except in single-family and two-family dwellings, chimneys which extend through another story must have an enclosure with a fire resistance rating equal to or greater than that of the floor or roof assembly through which they pass.
chimney height supported by the various components and must be followed throughout this instruction, this data applies to both styles. Items in Table 2 noted N/A are not load bearing components. BAND-BRACKET CONNECTIONS For Universal components, use the carriage bolt through the band and through the leg. Use (1) flat washer, (1) locking washer, and (1) nut per side to secure to carriage bolt (Fig.5). Ensure carriage bolts are directly across from each other.
CHIMNEY CAP ADJUSTABLE FLASHING STORM COLLAR CHIMNEY SECTIONS REF FIG. 7 FOR MIN DISTANCE BELOW CEILING FOR SUPPORT USED 18 INCHES MINIMUM FOR SINGLE WALL STOVEPIPE ATTIC INSULATION SHIELD FRAMED OPENING ROUND SUPPORT BOX ROUND TRIM COLLAR Figure 8 mark this center point on the ceiling. Refer to Table 1 for specific framing and clearance dimensions. Mark appropriate cutting lines around the center point. Cut a square hole in the ceiling for the Support Box.
CAP STORM COLLAR UNOCCUPIED SPACE 2 INCH MIN CLEARANCE TO INSIDE OF ENCLOSURE ADJUSTABLE FLASHING CHIMNEY SECTION ATTIC INSULATION SHIELD FRAMED ENCLOSURE REF FIG. 7 18 INCH MIN FOR SINGLE WALL STOVEPIPE FIRESTOP RADIATION SHIELD 4. Frame Openings: Frame openings in each ceiling or floor above the Support Box (Fig.10). These openings are to hold the Firestop Radiation Shield and Attic Insulation Shield. Locate each opening by dropping a plumb bob to the four corners of the opening below.
Box is in the 1st floor ceiling), you would need a Firestop Radiation Shield at the 2nd floor ceiling, and at the 3rd floor ceiling, etc., including where the chimney penetrates into the attic. Fig.10 shows a typical 2-story installation with an attic. Note: a Firestop Radiation Shield is not installed where the chimney penetrates through the roof. The Firestop Radiation Shield is installed on the underside of the ceiling/floor framing, with the cylindrical “tube” portion of the shield pointing upward.
Figure 14 PUSH COLLAR DOWN TO FLASHING AND SEAL WITH NONHARDENING HIGH TEMP SILICONE ROOFING FASTENERS ADJUSTABLE FLASHING Figure 15 B3. Extend the Firestop Radiation Shield tube extension (keep at least 1” overlap), and secure in place using sheet metal screws. B4. Slip the Attic Insulation Shield over the Chimney and Firestop Radiation Shield until the base sits squarely on the framed opening (Fig.10, 13). If desired, non-combustible insulation may be installed in the Attic Insulation Shield.
SPLITTER Figure 16 collar of the cap and twist locking it clockwise onto the chimney. Do not hold upper portion of the cap and twist, as this may damage the cap. The Chimney Cap can be removed for chimney cleaning as described in the Chimney Maintenance section of the instructions. Use an Extended Roof Bracket if the chimney extends more than 5’ above the roof (Fig.18 in the Extended Roof Bracket section). If you are located in heavy snow country, it is recommended that a Snow Splitter be installed (Fig.
ELBOW STRAP 8-penny nails or (2) #8, 1-1/2 screws. Do not add more Chimney Sections until the Elbows are supported. Be sure that the chimney remains vertical. If there is more than one Chimney Section between the Elbows, install a second Elbow Strap around the joint of the two Chimney Sections (Fig.17).
CAP STORM COLLAR ADJUSTABLE FLASHING UNOCCUPIED SPACE CHIMNEY SECTION REF FIG. 7 FOR MIN DISTANCE BELOW CEILING FOR SUPPORT USED CHIMNEY SECTION 18 INCH MIN CLEARANCE FOR SINGLE-WALL STOVEPIPE SQUARE CEILING SUPPORT BOX OR REDUCED CLEARANCE SUPPORT BOX FRAMED OPENING Figure 19 CAP STORM COLLAR REF FIG. 7 FOR MIN DISTANCE BELOW CEILING FOR SUPPORT USED CHIMNEY SECTION CHIMNEY SECTION STOVEPIPE Figure 20 approximately a 60° angle with the chimney, and with each other (Fig.18).
METHOD 2: ROOF SUPPORTED INSTALLATIONS There are two types of Roof Supported Installations: (A) Using a Square Ceiling Support Box or Reduced Clearance Support Box and (B) Using a Roof Support.
Box into the framed opening so the square portion projects at least 2” below the finished ceiling and rafters (bottom of round portion is 5” below, Fig.7), and extends above the ceiling to framing or decking materials to which it can be nailed. Level the Support Box, and slit the corners to the roofline where they extend beyond it.
3. Install a Firestop Radiation Shield below the finished ceiling or framing members. Trim the ‘tube’ portion of the Firestop Radiation Shield as needed if it interferes with the Roof Support Installation (Fig.22). 4. Follow steps B5 and B6 from the Roof Support section. Note: Non-combustible insulation is not approved for use with Roof Supported installations. METHOD 3: TEE-SUPPORTED INSTALLATIONS Tee-Supported installations are used when passing through a wall to a chimney.
CHIMNEY SECTION TEE BRANCH (MUST PENETRATE A MINIMUM OF 6 INCHES INTO ROOM) CHIMNEY TEE WALL THIMBLE ASSEMBLY TEE SUPPORT IS ADJUSTABLE FOR DISTANCE FROM CHIMNEY TO WALL. USE 8 PENNY NAILS OR #8, 2 1/2” WOOD SCREWS. USE 4 FOR EACH SUPPORT LEG.
MIN 6 INCHES CLEARANCE BETWEEN CAP AND CHASE TOP EXTENDED ROOF SUPPORT BRACKET CHASE TOP FLASHING FRAMED EXTERIOR ENCLOSURE ADJUSTABLE WALL STRAP 2 INCHES MIN ADJUSTABLE FLASHING TYPICAL THRUTHE-WALL TEE SUPPORTED INSTALLATION ACCESS DOOR FOR CLEANING 2 INCHES MIN FRAMED CHASE ADJUSTABLE TEE SUPPORT 6 INCHES MIN INTO ROOM ACCESS DOOR FOR CLEANING Figure 26 Figure 27 used to penetrate through the wall must extend at least 6” into the room (Fig.24 & 27).
ALLOW MIN OF 2 INCHES AIR SPACE ON ALL SIDES 2 INCHES MIN 2 INCHES MIN Figure 28 ALLOW 1 INCH AIR GAP BETWEEN STORM COLLAR AND CHASE TOP FLASHING 1/2 INCH AIR SPACE ESTABLISHED BY SPACERS Flashing. Using a Chase Top Flashing allows for a lower profile for the chimney. The Chase Top Flashing has an opening that is 3” larger in diameter than the DuraTech Chimney. If the Chase Top Flashing can fit over your chase enclosure as required (Fig.29) then install as directed, or trim as needed.
masonry accordingly. Follow the requirements of your local building department for connecting factory-built chimneys to masonry fireboxes or masonry chimneys. Center the Anchor Plate over the masonry flue opening, and seal the Anchor Plate with a high-temperature (1000ºF) sealant. Secure Anchor Plate with at least (4) 1/4” x 4” masonry anchors (Fig.31). It is very important that the Anchor Plate is level. Be sure to maintain a 1” min. clearance to combustibles from the Anchor Plate. 3.
ANCHOR PLATE NOTE: Follow local building code requirements for connecting factory-built chimney to masonry fireplaces. MAINTAIN 1 INCH MIN CLEARANCE FROM ANCHOR PLATE TO COMBUSTIBLES MASONRY ANCHOR BOLTS (4) REQUIRED (NOT FURNISHED) HIGH TEMP SEALANT Figure 31 EXISTING MASONRY CHIMNEY WITH LEVELED SURFACE 3. Chimney Sections: Attach a Chimney Section to the Anchor Plate by twist-locking clockwise. 4.
ADJUSTABLE CHIMNEY LENGTH The DuraTech Adjustable Length is used when an exact length of chimney is needed and standard lengths of chimney are not sufficient. The Adjustable Length spans from 15”-22” (Fig.34) and can be used between any other DuraTech chimney sections (straight pipe lengths, elbows, tees, etc.). 1. Determine the length needed for your installation. There will be 1-1/4” lost to the joint between the Adjustable piece and the next section of chimney. 2.
can lead to premature failure of the chimney. To reduce corrosion, clean the chimney thoroughly within 48 hours of shutting down the stove for the season. An annual inspection is required. 6. Chemical Cleaners: Use chemical cleaners only as a last resort, and use only those which the manufacturer specifically warrants as being noncorrosive to the chimney liner. DuraVent will assume no liability for damage resulting from the use of chemical cleaners. 7.
THIS PAGE IS INTENTIALLY LEFT BLANK 25
THIS PAGE IS INTENTIALLY LEFT BLANK 26
THIS PAGE IS INTENTIALLY LEFT BLANK 27
DURAVENT LIMITED LIFETIME WARRANTY DuraVent, Inc. 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.
