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Twist elbow sections in a clockwise direction only so as to avoid the possiblity of unlockinganyofthepreviouslyconnectedvent sections. See Figure 22 on Page 13. I. Continue installation of horizontal/inclined sections -Continue with the installation of the straight vent sections in horizontal/inclined run as described in Step E. Install support straps every 5 ft. (1.52 m) along horizontal/inclined vent runs using conventional plumber’s tape. See Figure 33. It is very important that the horizontal/inclined run be maintained in a straight (no dips) and recommended to be in a slightly elevated plane, in a direction away from the fireplace of 1/4" rise per foot (20 mm per meter) which is ideal, though rise per foot run ratios that are smaller are acceptable all the way down to at or near level. It is important to maintain the required clearances to combustibles: 1" (25 mm) at all sides for all vertical runs; and 3" (76 mm) at the top, 1" (25 mm) at sides, and 1" (25 mm) at the bottom for all horizontal/inclined runs. 18 NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE. J. Assemble vent run to exterior wall - If not previously measured, locate the center of the vent at the exterior wall. Prepare an opening as described in Step B. Assemble the vent system to point where the terminus of the last section is located relative to the exterior surface to which the termination is to be attached as shown in Figure 35 and Table 12 on Pages 18 & 19. 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 35, refer to Table 12 on Page 19. This Table lists the additional venting components needed (in addition to the termination and adapter) for a particular range of wall thicknesses. K. 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 in Figure 34 in the same manner as any SV4.5 vent component (refer to Step E). L. Install Firestop/Spacer at exterior wall - When using the square termination, install SV4.5HF (Secure Vent), 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 34, and nail into place. (The Firestop/Spacer may also be installed over the opening at the interior side of framing). M. Install the Square Termination (SV4.5HT-2) Install the square termination - For the last step , from outside the exterior wall, slide the collars of the termination onto the adapter (the outer inside the outer and the inner outside the inner) until the termination seats against the exterior wall surface to which it will be attached. Orient the housing of the termination with the arrow pointed upwards. Secure the termination to the exterior wall. The horizontal termination must not be recessed into the exterior wall or siding by more than the 1-1/4" (32 mm) as shown in Figure 35. SV4.5 HT-2 Termination SV4.5 HT-2 Termination Horizontal terminations have been designed to perform in a wide range of weather conditions. Our terminations meet or exceed industry standards. When selecting the locations of your horizontal terminations, do not place the termination where water from eaves and adjoining rooflines may create a heavy flow of cascading water onto the termination cap. If the cap must be placed where the possibility of cascading water exists, it is the responsibility of the builder to direct the water away from the termination cap by using gutters or other means. Take care to carefully follow the installation instructions for the termination, including the use of silicone caulking where required. Figure 35 Figure 34 - INSTALLING SQUARE HORIZONTAL TERMINATION (SV4.5HT-2) Siding Stucco 1-1/4” Maximum Recess of Square Termination into Exterior Finishing Material Exterior Surface of Framing Exterior Surface of Siding Maximum Extent of Vent Run Sections Relative to Exterior Surface of Framing Interior Surface of Finished Wall Last Vent Section. Use Telescopic Vent Section (SV4.5LA), If Necessary Adapter SV4.5RCH .. Use silicone caulking to seal the top and sides of the termination, up to the underlayment, stucco, or masonry wall surface. ..Caulk ..Caulk Maximum Wall Thickness 10 in. (254 mm) 6 in. to 9-1/4 in. (152 to 235 mm) .. .. 10-1/2" (267mm) 7" (178) 5-1/8" (130 mm) 12-1/8" (308 mm) Note: Centerline of Vent Piping is NOT the Same as the Centerline of the Framed Opening. 6 to 48 inch Vent Section, Telescopic vent section, Elbow or Appliance Collar Base of Appliance 3" (76 mm) 1" Adapter (25.4 mm) SV4.5RCH To help minimize water infiltration it is recommended that the Firestop/Spacer (SV4.5HF) be installed on the exterior side of the wall. Venting Connection and Exterior Wall Recessing of the Horizontal Square Termination (SV4.5HT-2). See Figure 14 on Page 9 fo...

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