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If the terminus of the last section is not within this distance, use the telescopic vent section SV4.5LA, as the last vent section. For wall thicknesses greater than that shown in Figure 31, refer to table 3 on page 16. This table lists the additional venting components needed (in addition to the termination and adapter) for a particular range of wall thicknesses. K. When using square (SV4.5HTS) or short square (SV4.5 HTSS) horizontal termination - attach termination adapter Attach the adapter (adapter - SV4.5RCH - provided with the termination) to the vent section or telescoping vent section), elbow or appliance collar as shown inFigure 29in the same manner as any SV4.5 vent component (refer to Step E). When using long square (SV4.5HTSSL) horizontal termination Assemble the vent system to point where the terminus of the last section is within 0 in. (0 mm) to 9... in. (248 mm) inboard of the exterior surface to which the termination is to be attached, see Figure 32. If the terminus of the last section is not within this distance, use the telescopic vent section SV4.5LA, as the last vent section. For wall thicknesses greater than that shown in Figure 31, refer to table 3 on page 16. This table lists the additional venting components needed (in addition to the termination and adapter) for a particular range of wall thicknesses. K. When using square (SV4.5HTS) or short square (SV4.5 HTSS) horizontal termination - attach termination adapter Attach the adapter (adapter - SV4.5RCH - provided with the termination) to the vent section or telescoping vent section), elbow or appliance collar as shown inFigure 29in the same manner as any SV4.5 vent component (refer to Step E). When using long square (SV4.5HTSSL) horizontal termination Assemble the vent system to point where the terminus of the last section is within 0 in. (0 mm) to 9... in. (248 mm) inboard of the exterior surface to which the termination is to be attached, see Figure 32. *Firestop/Spacer (SV4.5HF) shownon the exterior side of the wall. It may also be installed on theinterior side. SV4.5 HTSSL Termination L. Install Firestop/Spacer at exterior wall When using either of the square terminations, install SV4.5HF (Secure Vent), or SF4.5HF (Secure Flex) firestop/spacer over the opening at the exterior side of the framing, long side up, with the 3 inch spacer clearance at the top as shown in Figure 29 or 30, and nail into place. (The Firestop/Spacer may be installed over the opening at the interior side of the framing.) When using the round termination, a separate firestop/spacer is not required since this termination has integral spacers which provide the same function as a separate firestop/spacer. 10..." (267 mm) 7" (178) 5..." (130 mm) 12..." (308 mm) Note: Centerline of Vent Piping isNOT the Same as the Centerline of the Framed Opening. 6 to 48 inch Vent Section, Elbow or Appliance Collar See Figure 9 on page 7for Min. Distance to Base of Appliance. Base of Appliance 3" (76 mm) 1" (25.4 mm) *When using Secure Flex, useFirestop/Spacer (SF4.5HF) Figure 30 Installing Long Square HorizontalTermination (SV4.5HTSSL) Minimu*6 iInterior Surface of Finished Wall Maxim10.. *Note - Firestop/Spacer(SV4.5HF) required, butnot shown for clarity. um . in. (260 mm) m n. (152 mm) wall thickness wall thickness Minimum wall thickness *10... in. (273 mm) Interior Surface of Maximum wall thickness 20 in. (508 mm) *Cut termination collar for wall thicknesses less than 10... in. (273 mm). Exterio6 in. (152 mExterioMaximum Extent of Vent Run Sections Relative to Exterior Surface of Framing Last Vent Section. Use Telescopic Vent Section(SV4.5LA), If Necessary *Cut termination collar for wall thicknesses r Surface of Framing to 10... in. m ...

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