All-Fuel Chimney System ® DuraPlus Installation Instructions Complete Venting Solutions
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 DURAPLUS CHIMNEY BE INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS. Dear Customer, Installer, or End User: I welcome any comments regarding matters pertaining to our Simpson Dura-Vent products. I welcome any ideas, input or complaints and I’ll make sure that someone responds directly back to you. Send your emails to: president@duravent.
CONTENTS DuraPlus All-fuel Chimney System Clearance / Permits / Applications / Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Chimney Diameter / Chimney Height / Chimney Placement . . . . . . . . . . . . . 5 Chimney Enclosure Requirements / Stove Recommendations. . . . . . . . . . .6 Step-by-Step Directions / Ceiling Supported . . . . . . . . . . . . . . . . . . . . . . . . 7 Offset Elbow Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLEARANCE Allow at least a 2-inch clearance between DuraPlus Pipe and any combustible materials. Where the chimney passes through floors, joists, or ceilings, Firestop Radiation Shields, Support Boxes, and Close Clearance Shields may permit reduced clearances as established by these parts, or spacers built on to these parts.
Table 1 duraplus (sdp) parts with ul catalog numbers UL Cat # Part UL Cat # Part SDP-P Chimney Sections SDP-TS Tee Support Bracket SDP-T Tee SDP-IS Insulation Shield SDP-F Flashing SDP-FRS Firestop Radiation Shield SDP-TF Flat Roof Flashing SDP-SC Storm Collar SDP-S Flat Ceiling Support Box SDP-WS Wall Strap SDP-RS Round Ceiling Support Box SDP-ES Elbow Strap SDP-SB Square Ceiling Support Box SDP-RSA Extended Roof Bracket SDP-WT Wall Thimble SDP-AP SDP-C Chimney Cap Anchor
Attic Attic insulation shield Ceiling Firestop radiation shield enclosure must have 2 inches clearance between chimney and wall. floor support box Figure 2 CHIMNEY ENCLOSURE REQUIREMENTS Through Rooms: Interior chimneys shall be enclosed where they extend through closets, storage areas, or habitable spaces where the surface of the chimney could be contacted by persons or combustible materials. The space between the chimney and the enclosure shall be at least 2 inches. (Figure 2).
STEP-BY-STEP DIRECTIONS There are five general types of DuraPlus installations: 1. Ceiling-supported 2. Roof-supported 3. Tee-supported (through the wall) 4. Masonry Fireplace 5. Zero-Clearance Fireplace Attic minimum of 2 inches below finished ceiling Review the step-by-step directions before beginning your installation. 18 inches minimum for single-wall stovepipe CEILING SUPPORTED 1. Place Appliance: Position the appliance according to the manufacturer’s instructions.
cap sdp-c storm collar sdp-sc flashing ventilated sdp-sc chimney sections sdp-p round ceiling support sdp-rs attic insulation shield sdp-is Firestop Radiation shield sdp-is flat support box sdp-s attic second story Figure 5 support box in cathedral ceiling with trim frame in place wood screw (6 req) round ceiling support with trim plates in place wood screw (8 req) Figure 6 3. Install Support: Slip the Support Box ,(Figure 5), into the framed opening.
Table 2 framing for square support boxes, round support boxes and wall thimbles SQUARE SUPPORT BOXES Chimney inside diameter 6 INCHES 7 INCHES 8 INCHES Framed opening inside dimensions 14 ½ x 14 ½ 14 ½ x 14 ½ 14 ½ x 14 ½ Chimney inside diameter 6 INCHES 7 INCHES 8 INCHES Framed opening inside dimensions 14 ½ x 14 ½ 14 ½ x 14 ½ 14 ½ x 14 ½ Chimney inside diameter 6 INCHES 7 INCHES 8 INCHES Framed opening inside dimensions 14 ½ x 14 ½ 14 ½ x 14 ½ 14 ½ x 14 ½ Chimney inside diameter 6
firestop radiation shield sdp-frs nails (at least 2 per side) two-story going into attic framing framing firestop radiation shield sdp-frs multi-story going into next floor Figure 9 nails (at least 2 per side) ventilated flashing Figure 10 Chimney section sdp-p support box sdp-s, sdp-rs, sdp-sb Figure 11 10 illustrates the two-story building.
necessary. The Firestop Radiation Shield will fit inside the Attic Insulation Shield. b. Assemble Chimney Sections until at least 18 inches of chimney extends above the Firestop Radiation Shield. c. Slip the Insulation Shield over the Chimney and Firestop Radiation Shield until the base sits squarely on the framed opening. (Figure 7). d. Nail the Insulation Shield to the top of the framed opening with at least two 8-penny nails per side. (Figure 12). e.
cap sdp-c apply small bead of non-hardening sealant along seam seam of chimney pipe section Figure 15 splitter splitter top view Figure 16 sdp-es sdp-e 15º / 30º sdp-p not more than 48 inches rise sdp-p offset Figure 17 12 chimney above the Flashing, and also along the vertical seam of the chimney pipe, which is exposed to the weather. (Figures 14 and 15). Slide the Storm Collar down over the chimney to the top of the Flashing. Tighten and seal the Storm Collar against the sealant.
2 pairs of Elbows (4 elbows total) in any one chimney system. 1. Attach Elbows: Attach Elbows to Chimney Sections or other Elbows by twisting clockwise until they lock firmly. Attach one Elbow to the Chimney Section below, and align it for the offset. If the needed direction of the Elbow is different than the fully locked position, the Elbow can be rotated to desired direction and can be secured to pipe section with a minimum of (4) sheet metal screws. Do not penetrate the inner wall.
chimney section sdp-p extended roof bracket sdp-rsa 60º 3/4 inch thin-wall galvanized electrical conduit (not furnished) Figure 18 chimney cap sdp-c (Figures 18 and 19). Cut 2 pieces of 3/4 inch thin wall galvanized steel electrical conduit, (or rigid galvanized tubing) to these lengths. The conduit is not furnished by Simpson Dura-Vent, and must be locally procured. Mount the two Roof Brackets where the conduit meets the roof, using 6 roofing nails per bracket.
ROOF SUPPORTED INSTALLATIONS Use only where a leveled Square Support Box will extend at least 2 inches below the ceiling (on the low side), while the top edge at least covers the edge of the roof’s decking material. Square Support Boxes are available in 11 inch, 24 inch, and 36 inch heights. Mobile home chimney installations are roof supported, and use Ventilated Flashings. Do not seal openings.
4. Complete Installation: Refer to Steps 8, and 9, in the Ceiling Supported Installation section, to complete the Roof-Supported installation. pipe sdp-p pipe section 6-inch or 9-inch sdp-p tee sdp-t wall thimble sdp-wt TEE-SUPPORTED INSTALLATIONS Tee-Supported installations are used when passing through a wall to an outside chimney. The required parts and general configuration are as shown in Figures 23, and 24. 1. Place Appliance: Position the appliance according to the manufacturer’s instructions.
diameter hole must be cut through the wall. 3. Install Wall Thimble: Insert the black section of the Wall Thimble into the opening in the wall from inside the room, and align the nail holes with the studs. (Figure 26). Do not nail the black thimble section at this time. Attach the Tee to a 9-inch or 12-inch Chimney Section by twisting until it is firmly locked. If the wall is less than 6 inches thick, use a 9-inch Chimney Section; if the wall is between 6 and 9 inches thick, use a 12-inch Chimney Section.
wall strap allow a minimum of 2 inches air space on all sides 2 inches minimum 2 inches minimum Figure 28 Use (2) 5/16 inch, 3-inch long lag screws to attach the straps to the wall. Replace the Tee Cleanout Cap and screws, once the Tee is installed. 6. Complete Chimney: Attach the Chimney Sections as in Step 7 of the Ceiling Supported Installation section. Secure the chimney to the wall with Wall Straps at 4-foot intervals to maintain at least 2 inches of clearance to combustible materials.
1/2 inch air space established by spacers 1/2 inch air space flat roof flashing 12 inch minimum framed chase enclosure in the event the chimney is to be enclosed. The other is a flat plate, to be used in cases when the chimney is not enclosed. 3. Attach Chimney: Place the first Chimney Section over the flange on the Anchor Plate with the arrows pointing up.
Table 4 20
chimney section sheet metal screws base plate (sdp-bp) zero-clearance fireplace Figure 31 ZERO-CLEARANCE FIREPLACE INSTALLATIONS 1. Manufacturer’s Instructions: Carefully read and comply with the manufacturer’s installation instructions for your fireplace. Verify that Simpson Dura-Vent’s DuraPlus chimney is approved for use on your fireplace. 2. Base Plate: Attach a Base Plate to the fireplace top with sheet metal screws. (Figure 31). A high temperature sealant may be used if desired. 3.
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.
SIMPSON DURA-VENT WARRANTY Simpson Dura-Vent Company, Inc. (“Simpson”) provides this limited lifetime warranty for all of its products to the original purchaser, with the exception of Ventinox (lifetime), DuraBlack (five years) and all Termination Caps (five years). Subject to the limitations set forth below, Simpson warrants that its products will be free from substantial defects in material or manufacturing, if properly installed, maintained and used.
