All-Fuel Chimney System 5” to 8” diameter DuraTech 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 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.
For the most up-to-date installation instructions, see www.duravent.com CONTENTS DuraTech All-Fuel Chimney System, 5” to 8” diameter CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 PERMITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 DURATECH CHIMNEY APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 EQUIPMENT & MATERIALS.. . . . . . . . . . . . .
CLEARANCES Always allow at least a 2-inch clearance between DuraTech Chimney Pipe and any combustible materials. Never fill any required clearance space with insulation or any other materials. Combustible materials include lumber, plywood, sheetrock, plaster and lath, furniture, curtains, electrical wiring and building insulation.
2 FT MIN ABOVE HIGHEST POINT OF ROOF WITHIN 10 FT DuraTech Chimney Components 6”, 12”, 18”, 24”, 36”, 48” pipe sections Firestop Radiation Shield Elbow with swivel Attic Insulation Shield Tee with Tee Cap Elbow Strap Adjustable Tee Support Bracket Adjustable Wall Strap Chimney Cap Anchor Plate Round Ceiling Support Box Extended Roof Bracket Trim collars for Round Support Boxes Adjustable Roof Flashing Square Ceiling Support Box Chase Top Flashing Flat Ceiling Support Box Flat Roof Flashing
CHIMNEY PLACEMENT When deciding the location of your chimney, try to avoid modifications to roof beams and other structural components of the building. CHIMNEY ENCLOSURE REQUIREMENTS Through Rooms: Interior chimneys shall be enclosed where they extend through closets, storage areas, occupied spaces, or anyplace where the surface of the chimney could be contacted by persons or combustible materials. Maintain at least a 2-inch air space between the outer wall of the chimney and the enclosure (Fig 2).
CEILING SUPPORTED 1. Place Appliance: Position the appliance according to the manufacturer’s instructions. The flue outlet collar should be placed between the rafters or joists above, if possible. 2. Frame Support Opening: Drop a plumb bob to the center of the appliance’s flue outlet and mark this center point on the ceiling. Refer to Table 2 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.
SQUARE CEILING SUPPORT BOX WITH TRIM FRAME IN PLACE ROUND CEILING SUPPORT WITH TRIM IN PLACE MIN OF 2 INCHES BELOW FINISHED CEILING WOOD SCREWS ARE REQUIRED Figure 6 CAP STORM COLLAR WOOD SCREWS ARE REQUIRED ADJUSTABLE FLASHING CHIMNEY SECTION 2 INCH MIN CLEARANCE TO INSIDE OF ENCLOSURE ATTIC INSULATION SHIELD FRAMED ENCLOSURE MIN OF 3 INCHES BELOW FINISHEDCEILING 18 INCH MIN FOR SINGLE WALL STOVEPIPE FIRESTOP RADIATION SHIELD CHIMNEY SECTION Figure 7 Support, refer to the Square ceiling installa
Framing Dimensions TWIST CLOCKWISE TO TIGHTEN Chimney Diameter 5” 6” 7” 8” Cathedral Ceiling Support Box 11-1/4” 12-1/4” 13-1/4” 14-1/2” Flat Ceiling Support Box 11-1/4” 12-1/4” 13-1/4” 14-1/2” Round Ceiling Support Box 11-1/4” 12-1/4” 13-1/4” 14-1/4” Firestop Radiation Shield 11-1/4” 12-1/4” 13-1/4” 14-1/4” Wall Thimble 11-1/4” 12-1/4” 13-1/4” 14-1/4” CAS Ceiling Support na 12-1/4” na 14-1/2” CAS Wall Thimble na 12-1/4” na 14-1/4” Reduced Clearance Support Box na 10-1/4” na na
Figure 11 ROOFING FASTENERS ADJUSTABLE FLASHING Figure 12 PUSH COLLAR DOWN TO FLASHING AND SEAL WITH NONHARDENING HIGHTEMP SILICONE SEALANT Figure 13 7. Assemble Chimney Sections: Lower the female end of the first Chimney Section in the Support Box (Fig 9). It will twist-lock clockwise onto the male end of the Support Box. Turn Pipe Sections firmly clockwise to lock them together. Sheet metal screws are not required, but they may be used to reinforce the connection, if desired.
chimney above the roof. Allow space to permit sliding the next Chimney Section up through the Flashing. Always insure the chimney remains vertical (use a level), and that at least a 2-inch clearance to combustible materials is maintained all around. Install the upper edge of the Flashing under the roofing. Nail to the roof along the upper edge and down each side with 1-inch roofing nails. Do not nail the lower edge of the Flashing (Fig 12).
ELBOW STRAP Strap, Tee Support, or similar support method to support the weight of the pipe and to relieve stress on the Elbows. Attach the second Elbow above the Chimney Section to complete the offset (Fig 15). 2. Secure Offset: Place the Elbow Strap’s band around the angled portion of the top Elbow, then tighten the nut and bolt until the clamp is firm.
least (2) 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 15).
CAP STORM COLLAR SQUARE PORTION OF SUPPORT BOX NEEDS A MIN OF 2 INCHES CLEARANCE TO FINISHED CEILING ADJUSTABLE FLASHING CHIMNEY SECTION CHIMNEY SECTION 18 INCH MIN CLEARANCE FOR SINGLE-WALL STOVEPIPE SQUARE CEILING SUPPORT BOX OR REDUCED CLEARANCE SUPPORT BOX FRAMED OPENING Figure 18 CAP STORM COLLAR CHIMNEY SECTION ADJUSTABLE FLASHING CHIMNEY SECTION CHIMNEY SECTION CHIMNEY SECTION Figure 19 Installation Instructions for directions on how to install the remainder of the Combustible Air System.
ceiling and roof exists, as shown in Figure 18 (Low Attic), first cut and frame a ceiling opening as described in Ceiling-Supported Installations (Step 2). Refer to Table 2 for clearance and framing specifications. If it is desired to install through a cathedral ceiling (Fig 19), then the hole is cut in the roof. 3.
DURATECH CHIMNEY PIPE ROOF SUPPORT FLOORING FRAMING MEMBERS (ALL SIDES) FIRESTOP RADIATION SHIELD (TRIM RADIATION SHIELD IF NEEDED TO AVOID ROOF SUPPORT) MIN OF 3” BELOW CEILING OR EXPOSED FRAMING Figure 22 hardware. Attach the Roof Support Brackets to roof using (4) 8 penny nails or (4) #8, 1-1/2” screws per side (Fig 21). 3. Determine how much DuraTech Chimney will be extending into the room (minimum of 3” below the ceiling).
as needed to fit your installation. There are two options when installing a Tee-Supported installation: the Tee Support above the Tee, or the Tee Support below the Tee. The required parts and general configuration are as shown in Figures 23, 24, 25 and 26. 1. Place Appliance: Position the appliance according to the manufacturer’s instructions. It is a good idea to try to position the appliance so it will allow the chimney to line up centered between studs. 2.
WALL THIMBLE COVER PLATE CHIMNEY TEE FINISHING COLLAR TEE BRANCH (MUST EXTEND AT LEAST 6 INCHES INTO ROOM) Figure 25 INSTALLATION WITH TEE BELOW TEE SUPPORT (SHOWN WITH LEG BRACKETS MOUNTED ABOVE SUPPORT PLATE) TEE SUPPORT MAY BE INSTALLED WITH LEG BRACKETS ABOVE OR BELOW SUPPORT PLATE AS SHOWN ADJUSTABLE WALL STRAP, ALLOWS 2”-6” CLEARANCE TO WALL 8-PENNY NAILS OR #8, 2 1/2” WOOD SCREWS, 2 PER SIDE TEE SUPPORT WITH LEG BRACKETS MOUNTED ABOVE SUPPORT PLATE CAN SUPPORT A MAXIMUM OF 50-FEET OF CHIMNEY.
Section: Twist lock the Tee onto a desired length of Chimney to be used as the cleanout section. Use only one chimney section (any length) to attach to bottom of the Tee. Tighten support band around chimney section at proper height to insure that Tee is centered through Wall Thimble (Fig 25 & 26). Use the 1/2” sheet metal screws provided to insure a tight connection between support band and chimney section. Connect support band to support base using the 1/2” sheet metal screws provided (Fig 26).
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 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 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 30). 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. Attach Chimney: Twist lock the first Chimney Section clockwise onto the Anchor Plate. 4.
ANCHOR PLATE NOTE: Follow local building code requirements for connecting factory-built chimney to masonry fireplaces. HIGH TEMP SEALANT MAINTAIN 1 INCH MIN CLEARANCE FROM ANCHOR PLATE TO COMBUSTIBLES MASONRY ANCHOR BOLTS (4) REQUIRED (NOT FURNISHED) EXISTING MASONRY CHIMNEY WITH LEVELED SURFACE Figure 30 CHIMNEY SECTION SHEET METAL SCREWS (4 REQUIRED) ANCHOR PLATE Figure 31 ZERO-CLEARANCE FIREPLACE INSTALLATIONS 1.
or Finishing Collar. Align the tabs on the DVL/ DuraBlack Chimney Adapter with the slots cut into the face of the Support Box or Finishing Collar, and push it in, and rotate to lock it in place. Detailed instructions for assembling the remainder of the close clearance system are included in the DVL shipping cartons. 3. Connection to Oil-Burning Appliance: DVL is especially recommended for oil appliances because of the corrosive nature of oil-burning exhaust.
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.
