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 INSTALLATION NOTES. . . . . . . . . . . . . . .
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.
CHIMNEY HEIGHT The National Fire Protection Association Standard #211 states: “Chimneys shall extend at least three feet above the highest point where it passes through the roof of a building, and at least two feet higher than any portion of a building within ten feet.” (Fig.1) DuraTech Chimney may be installed up to 60 feet high. If the chimney extends more than 5 feet above the roof, an Extended Roof Bracket must be used (see page 12).
roof assembly through which they pass. Cold Climates: In cold climates, chimneys mounted on an outside wall should be enclosed in a chase. Exterior chases reduce condensation and creosote formation, and enhance draft. Include an access door by the Tee Cap for chimney cleaning (Fig.26,27).
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. CARRIAGE BOLT FLAT WASHER LOCKING WASHER NUT UNIVERSAL SUPPORT BAND WALL SUPPORTS/RE-SUPPORTS Wall Supports, Re-Supports, and Tee Supports can be used interchangeably (Fig.6) to support the chimney on vertical runs.
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 ROUND SUPPORT BOX FRAMED OPENING ROUND TRIM COLLAR Figure 8 3.
the overlapping “U-shaped” Trim pieces so they cover the Support Box, and secure them to the framing members using the (6) 1-1/4” round head wood screws provided (Fig.9). CAP STORM COLLAR UNOCCUPIED SPACE 2 INCH MIN CLEARANCE TO INSIDE OF ENCLOSURE ADJUSTABLE FLASHING 5. Cut Roof Opening: Cut an opening in the roof directly above the opening below, and at least 4” larger than the chimney’s outside diameter to provide at least a 2” clearance all around the chimney.
per corner. Refer to Table 1 for framing requirements. 7. Assemble Chimney Sections: Lower the female end of the first Chimney Section in the Support Box (Fig.12). 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. Use only 1/2” (or shorter) sheet metal screws. Do not penetrate the inner liner of the chimney. 8.
Figure 14 PUSH COLLAR DOWN TO FLASHING AND SEAL WITH NONHARDENING HIGH TEMP SILICONE ROOFING FASTENERS ADJUSTABLE FLASHING Figure 15 9. Attach Flashing: In new construction, assemble the Chimney Sections to a point above the roof, then slip the Flashing over the chimney. On an existing roof, center and install the Flashing before extending the chimney above the roof. Allow space to permit sliding the next Chimney Section up through the Flashing.
may be constructed with standard framing and sheathed with sheetrock or plywood. Important: Use Wall Straps every 8’ min to maintain a minimum of 2” of air space between the chimney and combustible materials. OFFSET ELBOW INSTALLATION Elbows are manufactured in 15° and 30° angles measured from the vertical. In the US, a 30° Elbow is the largest that can be used in an offset. A 30° Elbow may not be combined with a 15° Elbow to make a 45° offset. Elbows inhibit draft, avoid their use where possible.
ELBOW STRAP ELBOW CHIMNEY SECTION RISE (INCHES) OFFSET (INCHES) ELBOW STRAP ADDITIONAL ELBOW STRAPS REQUIRED FOR EACH CHIMNEY SECTION USED IN OFFSET ELBOW STRAPS OR TEE SUPPORTS ARE REQUIRED TO SUPPORT WEIGHT OF OFFSET AND TO RELIEVE STRESS ON ELBOWS ELBOW 2. Attach the Legs: The Adjustable Legs of the assembly will adjust from 67” to 114”. Secure one end of each Leg to the Pipe Band using the nuts and bolts included (2 per Leg).
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.
Figure 21 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 to install the remainder of the Combustion Air System. The Support Box must remain level, and the top edge of the box must cover the edge of the roof’s decking material. Mobile home chimney installations are roof supported. Do not seal openings in flashing. A1.
framing with at least three (3) 8-penny nails, or (3) 1-1/2”, #8 screws, per side (Fig.21). Be sure to keep the Support Box level. Screw the trim sections into the ceiling (Fig.9). A3. Complete Installation: Refer to Steps 7, 9 & 10 in the “Ceiling Supported” section to complete the Roof Supported install. (B) Roof Support: A Roof Support may be used in installations where there is a cathedral ceiling, and a Square Ceiling Support is not desired.
DuraTech Chimney (Table 2). The various support components are adjustable in length from the wall to better fit your installation. There are two options when installing a TeeSupported installation: the Tee Support above the Tee, or the Tee Support below the Tee. The required parts and general configuration are as shown in Fig.24, 25, 26 and 27. 1. Place Appliance: Follow Step 1 from “Ceiling-Supported” method detailed earlier. 2.
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 screws. Once the chimney is at the minimum height specified in Fig.
bottom of the Storm Collar and the Chase Top Flashing. METHOD 4: MASONRY FIREPLACE INSTALLATIONS 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 1. Determine Chimney Size: Use Fig.30 to determine the correct diameter chimney for your fireplace. 2. Mount Anchor Plate: Chimneys for masonry fireplaces begin with an Anchor Plate.
METHOD 5: ZERO-CLEARANCE FIREPLACE INSTALLATIONS 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. 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. 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 installation. There will be 1-1/4” lost to the joint between the Adjustable piece and the next section of chimney. 2.
Length together, compressing the insulation to achieve the desired length. Important: the outer walls of the two sections must overlap a min of 2” to ensure a proper connection. When at the correct length, secure the two sections together with (4) sheet metal screws provided. 4. Twist lock the Adjustable Length into the DuraTech chimney system. The Adjustable Length is not intended to support chimney either above or below.
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.
