All-Fuel Chimney System 10” to 24” 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 DURATECH BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. IMPORTANT: Read through all of these instructions before beginning your installation.
For the most up-to-date installation instructions, see www.duravent.com CONTENTS DuraTech® ALL FUEL CHIMNEY SYSTEM FOR 10" - 24" DIAMETER Clearances, Permits, Equipment Needed, Chimney Applications, Notes . . 4 Chimney Diameter, Height & Placement, Enclosure Requirements. . . . . . . 5 Appliance Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Ceiling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 DIAMETER Follow the appliance manufacturer’s instructions to determine chimney diameter and clearances between combustible materials and your heating appliance. Never choose a chimney with an inside diameter smaller than your appliance’s outlet. If you are connecting to a masonry fireplace, refer to Table 4, for proper sizing. To calculate the chimney’s outside diameter, add 2 inches to the inside diameter.
condensation and creosote formation, and enhance draft. Include an access door by the Tee Cap for chimney cleaning (Refer to Fig 18). ATTIC SPACE OCCUPIED SECOND FLOOR ATTIC INSULATION SHIELD FIRESTOP RADIATION SHIELD (INSIDE) ENCLOSURE MUST HAVE 2 INCHES OF CLEARANCE BETWEEN CHIMNEY AND WALL FIRST FLOOR SUPPORT BOX Figure 2 least 2 inches (Fig 2). Multi-Story: Consult local building code officials for requirements in your area.
CEILING SUPPORT Ceiling supported systems are available for diameters 10”-16". JOISTS & FRAMING 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.
3. Install Support: For installation into a flat ceiling, you need to use the Round Support Box. The Round Ceiling Support Box has the option of a square or round Trim Collar available (Fig 5). The Support Box must extend at least 3 inches below the finished ceiling.
Table 2 Inside Square Framing Dimensions (X" x X") Chimney Diameter 10" 12" 14" 16" 18" 20" 22" 24" CEILING SUPPORT BOX 16 1/4" 18 1/4" 20 1/4" 22-1/4" na na na na WALL THIMBLE 16" 18" 20" 22" na na na na FIRESTOP RADIATION SHIELD 16" 18" 20" 22" 24 1/4" 26 1/4" 28 1/4" 30 1/4" ATTIC INSULATION SHIELD 16 1/4" 18 1/4" 20 1/4" 22 1/4" 24 1/4" 26 1/4" 28 1/4" 30 1/4" properly). Level the Support Box and secure it to the framing using at least three 8-penny nails per side (min.
INSTALL ROOF RADIATION SHIELDS WITH A 1/2" CLEARANCE FROM ROOF JOIST FACE. NAILS OR SCREWS ROOF JOISTS ROOF RADIATION SHIELDS Figure 8 CHIMNEY SECTION SITS INSIDE SUPPORT BOX SUPPORT BOX WITH SQUARE TRIM Figure 9 ATTIC INSULATION SHIELD Figure 10 10 including where the chimney penetrates into the attic. Figure 6 shows a typical 2-story installation with an attic. Note: a Firestop Radiation Shield is not installed where the chimney penetrates through the roof.
9. Install Attic Insulation Shield: Install the Attic Insulation Shield where the chimney passes into an attic. It’s purpose is to prevent debris and building insulation from getting too close to the chimney (Fig 10). An installed Attic Insulation Shield is 15 inches high. In attic areas where this shield cannot fit, you must enclose the attic portion of the chimney in a framed enclosure. If the chimney is fully enclosed through the attic, an Attic Insulation Shield is not required.
ROOFING FASTENERS ADJUSTABLE FLASHING Figure 12 SEAL EXPOSED SEAM WITH NON-HARDENING HIGHTEMP SILICONE SEALANT PUSH COLLAR DOWN TO FLASHING AND SEAL WITH NONHARDENING HIGHTEMP SILICONE SEALANT Figure 13 SNOW SPLITTER SNOW SPLITTER TOP VIEW Figure 14 12 the chimney by setting the female end of the Cap onto the male end of the last chimney section. Secure the Cap by using (6) sheet metal screws provided. Do not push down from the top portion of the cap as this may damage the cap.
are necessary to avoid obstructions such as rafters, ridgepoles, or joists, you are only allowed to use 1 pair of Elbows in any one chimney system. 1. Attach Elbows: Attach Elbow to Chimney Section or other Elbow by mating the male and female ends with each other and using the (6) sheet metal screws provided. Attach one Elbow to the Chimney Section below, and align it for the offset.
EXTENDED ROOF BRACKET ASSEMBLY PIPE BAND AROUND CHIMNEY SECTION ADJUSTABLE LEGS ADJUST FROM 67 TO 114 INCHES 60° Figure 16 CHIMNEY CAP USE EXTENDED ROOF BRACKET IF MORE THAN 4 FT.
CHIMNEY SECTION TEE BRANCH (MUST PENETRATE A MINIMUM OF 6 INCHES INTO ROOM) UP CHIMNEY TEE 1/4"X2" LAG SCREWS (3 REQUIRED) WALL THIMBLE ASSEMBLY TEE CAP RETAINING BAR FINISHING COLLAR TEE CAP Figure 19 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 INSIDE OUTSIDE CHIMNEY TEE FINISHING COLLAR TEE BRANCH (MUST SHIELD EXTEND AT LEAST 6 EXTENSION INCHES INTO ROOM) BACK OF WALL THIMBLE (SECURE WITH 4 NAILS OR 4 SCREWS) Figure 20 EXTENDED ROOF SUPPORT BRACKET WALL STRAP 2 INCHES MINIMUM FLASHING 2 INCHES MINIMUM FRAMED ENCLOSURE ACCESS DOOR FOR CLEANING Figure 21 Support so that the chimney Tee will be centered inside the Wall Thimble (Figs 19 & 20).
the wall with Wall Straps at 4-foot intervals to maintain at least 2 inches of clearance to combustible materials. Slip the Wall Straps around the chimney, tighten the bolts, and fasten the Wall Straps to the wall with (4) #8, 2-1/2” long wood screws. Once the chimney is at the minimum height specified in Figure 1, attach the Chimney Cap onto the top of the chimney by holding it by the collar and slipping the female end of the Cap onto the male end of the Chimney Pipe.
STORM COLLAR SITS DOWN ON COLLAR OF CHASE TOP FLASHING. TIGHTEN SO THERE IS AT LEAST 1" CLEARANCE BETWEEN STORM COLLAR AND FLASHING. CHIMNEY CAP STORM COLLAR 3/8 INCH AIR SPACE ESTABLISHED BY SPACERS CHASE TOP FLASHING 3/8 INCH AIR SPACE CHIMNEY SECTIONS CHASE TOP FLASHING SPACER 3/8 INCH 6 INCH MINIMUM CLEARANCE BETWEEN BOTTOM OF CAP AND CHASE TOP FLASHING 3/8 INCH FRAMED CHASE ENCLOSURE Figure 23 MASONRY FIREPLACE INSTALLATIONS 1.
tension is needed to prevent the damper plate from rattling when closed. Mount the Lintel Hook to the masonry with the screws provided. 4. Attach Chimney: Attach the first Chimney Section onto the Anchor Plate by using the sheet metal screws provided. ANCHOR PLATE OR ANCHOR PLATE WITH DAMPER MASONRY ANCHORS HI-TEMP SEALANT 5. Finish Chimney: Install the rest of the chimney as directed in the Ceiling Supported Installation section, Steps 4 through 11.
T CHIMNEY HEIGHT (FEET) T Chimney Sizing Chart for Fireplace Installations 50 CHIMNEY 40 (FEET) HEIGHT 30 20 50 15 T 3040 20 10 15 8 10 8 24 24 22 22 20 20 18 18 16 16 84 72 60 W W ID TH 48 42 36 30 24 12 10 24 20 18 8 7 10 30 48 42 36 6 8 T H W H W 84 72 14 12 T FIREPLACE OPENING (INC FIREPLACE OPENING (INCHES) 14 20 Table 4 Dotted line 7 represents sample problem. Example shows fireplace opening as 36” wide and 30” high, and the 6 chimney height as 20’.
CHIMNEY MAINTENANCE 1. Creosote and Soot: When wood is burned slowly, it produces tar and other organic vapors, which combine with expelled moisture to produce creosote. The creosote vapors condense in the relatively cool chimney flue of a slow-burning fire. As a result, creosote residue accumulates on the flue lining. When ignited, this creosote makes an extremely hot fire. 2. Access: Chimneys must be installed so that access is provided for inspection and cleaning. 3.
TYPICAL INSTALLATIONS Fireplace Attic Offset Through-the-Wall Two Story 23
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.
