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(6.1m), but if a 90° is required in the horizontal vent, it must be reduced to 17 ft. (5.2m). NOTE: The sum of Dim. A and Dim. B must not be greater than 17 ft. (5.2m). (Fig. 22) AB90oFP1437 Fig. 22 Horizontal run reduction. A + B = 17’ (5.2m) Max. 7’6” (2.3m) 360DVS Series Direct Vent Fireplaces • The maximum number of 45° elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run. • For each 45° elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18” (45 cm). This does not apply if 45° elbows are installed on the vertical part of the vent system. • The maximum number of elbow degrees in a system is 270°. Example shown in Figure 23: Elbow 1 = 90° Elbow 2 = 45° Elbow 3 = 45° Elbow 4 = 90° Total angular variation = 270° 123412341 + 2 + 3 + 4 = 270° FP1438 Fig. 23 Maximum elbow usage. Vertical Side Wall Installation STEP 1 Locate and cut vent opening in the side wall. It may be necessary to first position the fireplace and measure to obtain the hole location. Depending on whether the wall is combustible or noncombustible, cut the opening to size per Figure 24. Combustible walls: Cut a rectangular hole measuring 9...” H x 9...” W (240 x 240mm) through the exterior wall and frame. Frame in the opening per Figure 24. Noncombustible walls: Cut a round hole measuring 7...” (190 mm) diameter through the exterior wall and frame. (Fig. 24) STEP 2 For combustible walls: Measure wall thickness and cut zero clearance sleeve parts to proper length. Max. length is 12” (305mm). Assemble the sleeve and attach it to the firestop with #8 sheet metal screws (supplied). Install the firestop assembly. (Fig. 25) Zero clearance sleeve is required only for combustible walls. 10006326 17 360 DVS Series Direct Vent Fireplaces 9...” (240mm) Framing Detail Vent Opening for Combustible Wall 9...” (240mm) Vent Opening for Noncombustible Wall 7...” (190mm) VO584-100 Fig. 24 Locate vent opening on rear wall. Maximum Length 12” (305mm) #8 Screws (2) #8 Screws (2) Firestop Side View CFM135a Fig. 25 Adjustable zero clearance sleeve. STEP 3 Place fireplace into position. (Fig. 26) Measure the vertical height (X) required from the base of the flue collars to the center of the wall opening. XXFP1439 Fig. 26 Vertical height requirement. STEP 4 Apply a bead of silicone to the inner and outer flue collars of the fireplace and using appropriate length of pipe section(s) attach to fireplace with three (3) screws. Follow with the installation of the inner and outer elbow, again secure joints as described in “Connecting Vent Pipes” section. STEP 5 Measure the horizontal length requirement including a 2” (51 mm) overlap, i.e. from the elbow to the outside wall face plus 2” (51 mm) (or the distance required if installing a second 90° elbow. (Fig. 27) Always install horizontal venting on a level plane. X X FP1441 Fig. 27 Horizontal length requirement. STEP 6 Use appropriate length of pipe section—telescopic or fixed—and install. The 20” (508 mm) section of pipe which goes through the wall is packaged with the 7DVSK starter kit, and can be cut to suit if necessary. Seal vent pipe and firestop gaps with high temperature sealant to restrict cold air being drawn in around the fireplace. STEP 7 Apply high temperature sealant to 4” (102 mm) and 7” (178 mm) collars, or to the termination 1” (25 mm) away from the crimped end. Guide 4” and 7” collars of vent terminations into respective vent pipes. Double check vent pipes to see that they overlap the collars by 18 10006326 360DVS Series Direct Vent Fireplaces 2” (51 mm). Secure termination to the wall with screws provided, and caulk around the wall plate to weatherproof. One alternative to screwing the termination directly to the wallis the use of expanding plugs or an approved exterior construction adhesive. Or, you may attach the termination with screws through the inner body into the 4” (102 mm) vent pipe; however, for this method, you must extend the 4” (102mm) pipe approximately 6” (153 mm) beyond the outer face of the wall. Support the horizontal pipes with metal pipe straps every 36” (914mm). Below Grade Installation When it is not possible to meet required vent terminal clearances of 12” (305 mm) above grade level, we recommend using a starter kit. It allows installation depth down to 7” (178 mm) below grade level. Measure 7” (178 mm) from the center of the horizontal vent pipe as it penetrates through the wall. NOTE: Ensure sidewall venting clearances are observed. If venting system is installed below ground, we recommend a window well with adequate and proper drainage. If installing a snorkel, a minimum 24” (610 mm) vertical rise is necessary. The maximum horizontal run with 24” (610 mm) vertical pipe is 36” (914mm). The measurement is taken from the collar of the fireplace (or transition elbow) to the face of exterior wall. See sidewall vent graph, Page 15, for extended horizontal runs if the verti...
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