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Use wall straps for this purpose (see Figure 19). Whenever possible, use 45° elbows instead of 90° elbows. The 45° elbow offers less restriction to the flow of the flue gases and intake air. 5. Place the flashing over the pipe section(s) extending through the roof. Secure the base of the flashing to the roof and framing with roofing nails. Be sure roofing material overlaps the top edge of the flashing as shown in Figure 19. There must be a 1" clearance from the vent pipe to combustible materials. 6. Continue to add pipe sections until the height of the vent cap meets the minimum building code requirements described in Figure 7 on page 6. Note: You must increase vent height for steep roof pitches. Nearby trees, adjoining roof lines, steep pitched roofs, and other similar factors may cause poor draft or down-drafting in high winds. Increasing the vent height may solve this problem. 7. Twist-lock the vent cap onto the last section of vent pipe. Note: If the vent pipe passes through any occupied areas above the first floor, including storage spaces and closets, you must enclose pipe. You may frame and sheetrock the enclosure with standard construction material. Make sure and meet the minimum allowable clearances to combustibles. Do not fill any of the required air spaces with insulation. Roof Flashing Wall Strap 45° Elbow If area above is an attic space or insulated area, install firestop above framed hole. Ceiling Firestop Figure 19 - Offset with Wall Strap and 45° Elbows If area above is a living space, install firestop below framed hole. Figure 20 - Installing Firestop Venting Installation instructions Continued Venting with Two 90° Elbows Vertical (V1) Horizontal (H) 5' min. 6' max. 6' min. 12' max. 7' min. 18' max. 8' min. 20' max. Vertical Termination Configurations Figures 21 through 24 show four different configurations for vertical termination. Venting with Two 90° Elbows Vertical (V) Horizontal (H1) + Horizontal (H2) 5' min. 2' max. 6' min. 4' max. 7' min. 6' max. 8' min. 8' max. 20' max. 8' max. Note: Install restrictor into inner collar of fireplace as shown. 45° Elbow 45° Elbow Note: Vertical (V1) + Vertical (V2) = 40' max. Figure 23 - Vertical Venting Configuration Using Two 90° Elbows (Vertical Round High Wind Termination Shown) Note: Install restrictor into inner collar of fireplace as shown. Figure 21 - Vertical Venting Configuration Using Two 90° Elbows with Two Horizontal Runs (Vertical Round High Wind Termination Shown) Venting with One 90° Elbow Vertical (V) Horizontal (H) 5' min. 2' max. 6' min. 4' max. 7' min. 6' max. 8' min. 8' max. 20' max. 8' max. Vertical Venting V = 40' max. Note: Install restrictor into inner collar of fireplace as shown. 45° Elbow 45° Elbow Note: Install restrictor into inner collar of fireplace as shown. Figure 24 - Vertical Venting Configuration With No Horizontal Run (Vertical Round High Wind Termination Shown) Figure 22 - Vertical Venting Configuration Using One 90° Elbow (Vertical Round High Wind Termination Shown) Venting Installation instructions Continued High Altitude Installation Your DESA direct-vent fireplace has been CSA tested and approved for elevations from 0-2000 feet (USA) and elevations from 0-4500 feet (Canada). When installing this fireplace at an elevation above 2000 feet (in the USA), you may need to decrease the input rating by changing the existing burner orifice to a smaller size. Reduce input 4% for each 1000 feet above sea level. Check with your local gas company for proper orifice size identification. When installing this fireplace at an elevation above 4500 feet (in Canada), check with local authorities. Consult your local gas company to help determine the proper orifice for your location. For assistance with any high altitude installation contact DESA Customer Service Department at 1-866-672-6040. Parts lists for venting kits and components DESA Pipe & Vent Kits Number Description P58-6 6" Section Double Wall Pipe - Galvanized P58-12 12" Section Double Wall Pipe - Galvanized P58-24 24" Section Double Wall Pipe - Galvanized P58-36 36" Section Double Wall Pipe - Galvanized P58-48 48" Section Double Wall Pipe - Galvanized PA58-712 Adjustable 7"-12" Section Coaxial Pipe - Galvanized FPA58-6 6" Duravent Collar to FMI Pipe Adaptor (6" Collar/Pipe Section) DPA58-6 6" FMI Collar to Pipe Duravent Adaptor (6" Collar/Pipe Section E58-45 45° Elbow, Galvanized E58-90 90° Elbow, Galvanized FSE58-45 45° Starter Elbow, Galvanized (Duravent Collar to FMI Pipe) DSE58-45 45° Starter Elbow, Galvanized (FMI Collar to Duravent Pipe) VKG-58 Ground Floor Vent Kit - Galvanized VKB-58 Basement Vent Kit - Galvanized VKS-58 Snorkel Kit - Galvanized VKR-58 Roof Vent Kit - Galvanized VKC-58 Corner Vent Kit - Galvanized HTK Horizontal Round Termination Kit HT-58 Horizontal Round Termination Kit, Galvanized HTKS-58 Horizontal Square Termination Kit HTS-58 Horizontal Square Termination Kit, Galvanized VT-58 Vertical Round Termination, Galvanized ST-58-14 14" Snorkel ...
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