Desa (V)G36 Owner's Operation And Installation Manual

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www.desatech.com 116010-01C8VenTing inSTallaTionContinuedFigure 9 - Elbow OffsetBAScrewsFIRESTOP SPACERS (1100EFS-10DM)Firestop spacers are required at each point wherethe chimney penetrates a floor space. Their purposeis to establish and maintain the required clearancebetween the chimney and the combustible materials.When the pipe passes through a framed opening intoa living space above, the firestop must be placed ontothe ceiling from below as shown in Figure 10.They also provide complete separation from one floorspace to another or attic space as required by mostcodes. When the double wall pipe passes through aframed opening into an attic space, the firestop mustbe placed into an attic floor as shown in Figure 11.Figure 10 - Firestop Spacer with LivingSpace Above CeilingFigure 11 - Firestop Spacer with AtticSpace Above CeilingExistingCeilingFrameFirestopSpacerScrews orStaples(Min. of 8)FirestopSpacerScrews or Staples(Min. of 8)PENETRATING THE ROOFTo maintain a 1" clearance to the pipe on a roofwith a pitch, a rectangular opening must be cut.1. Determine the center point through which thepipe will penetrate the roof.2. Determine the center point of the roof. Pitchis the distance the roof drops over a givenspan, usually 12". A 6/12 pitch means thatthe roof drops 6" for each 12" one measurehorizontally down from the roof rafters.3. Use the roof opening chart (Figure 12) todetermine the correct opening length andflashing required.4. Remove the shingles around the openingmeasured. Cut out this section.5. Add the next sections of the pipe until theend penetrates the roof line. Check to see thatthe proper clearances are maintained. Extendchimney by adding sections of double wallpipe until pipe is minimum of 30" above thehighest point of the roof cutout. Terminationand chimney must extend a minimum of36" above the highest point where it passesthrough the roof.17" Min. 30" Min.1" Min.1" Min.1" Min.Opening "A"Pitch Slope Opening"A" Max.Used FlashingModel No.Flat 0° 17" V6F-10DM0-6/1 6.6° 19" V6F-10DM6/1-1/1 45.0° 4" V12F-10DMExistingCeilingFrameFigure 12 - Roof Opening Measurements