Évaluations - 3, GPA: 4.3 ( )

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VENTING FIREPLACE - TOP (continued) Positioning the Fireplace Determine the exact position of the appliance so the direct vent termination will be centered (if possible) between two (2) studs. This will avoid any extra framing. All vent kit pipes should be assembled on the unit after the unit is moved into the final position. Cutting the Hole (Figures 24) After the fireplace has been positioned in its permanent location, the hole through the exterior wall of the house can be cut. This hole must be 10" (254mm) high x 10" (254mm) wide with its center line determined by the amount of vertical rise and horizontal run of the termination. (See Figure 24) When locating the hole it must be noted that the bottom of the cap must be 12" (305mm) above the ground level, and top of the cap must be no less than 18" (457mm) below a combustible projection, and no closer than 9" (229mm) to any wall running parallel to vent termination. (See Figure 25) Figure 27 Figure 28 24” 24”MINIMUMCLEARANCETOCOMBUSTIBLESEXAMPLES - TOP VENT RUN EXAMPLES - TOP VENT RUN Figure 29 23552-4-0408 Page 21 VENTING FIREPLACE - REAR Venting Graph (Dimensions in Feet) To Use the Vent Graph (Figure 30) 1. Determine the height of the center of the horizontal vent pipe. Using this dimension on the Sidewall Vent Graph, locate the point it intersects with the slanted graph line. 2. Fromthepointofthisintersection,drawavertical line to the bottom of the graph. 3. Select the indicated dimension, and position the unit in accordance with same. EXAMPLE A: If the vertical dimension from the floor of the unit is 12 feet, 4 inches the horizontal run to the outer wall flange must not exceed 12 feet, 3 inches. EXAMPLE B: If the vertical dimension from the floor of the unit is 6 feet, 9 inches, the horizontal run to the outer wall flange must not exceed 6 feet, 6 inches. SPECIAL NOTE: For each 45 degree elbow installed in the horizontal run, the length of the horizontal run MUST be reduced by 18" (457 mm). This does not apply if the 45 degree elbows are installed on the vertical part of the vent system. Reduce 3' for every 90° elbow. Example: According to the chart the maximum horizontal vent length is 20' and if two 45 degree elbows are required in the horizontal vent it must be reduced to 17'. The maximum number of 45 degree elbows permitted per side wall installation is two (2). These elbows can be installed in either the vertical or horizontal run. Note: When rear venting unit, adjust air shutter from 1/16" open up to between 1/8" and 3/16" for NAT gas. Adjust air shutter from 1/4" open to between 5/16" and to 3/8" for LP gas. REAR EXIT -VERTICAL AND HORIZONTAL TERMINATION (DIMENSIONS IN FEET) VERTICALDIMENSIONFROMTHEBOTTOMOFTHEUNITTOTHECENTEROFTHEFLUEOUTLETWITHVERTICALORHORIZONTALTERMINATIONCAPS262728293031323334353637383940HORIZONTALRUNREARHORIZONTALVENTCONNECTIONBADVD48FP(ONLY) Acceptable vertical and horizontal vent run. Unacceptable vertical and horizontal vent run. Note: When rear venting unit, adjust air shutter from 1/16" open up to between 1/8" and 3/16" for NAT gas. Adjust air shutter from 1/4" open to between 5/16" and 3/8" for LP gas. Figure 30 Page 22 23552-4-0408 EXAMPLES - REAR VENT RUN Model Maximum Pipe Length H1 DVD32 24" DVD36 24" DVD42 24" DVD48 6" Figure 33 Figure 31 Model Maximum Pipe Length H1 DVD32 24" DVD36 24" DVD42 18" DVD48 N/A Figure 32 Figure 34 23552-4-0408 Page 23 Termination clearance for buildings with combustible and noncombustible exteriors. TERMINATION CLEARANCES Figure 35 Vertical Sidewall Installations Important! Minimum clearance between vent pipes and combustible materials is three (3") (76 mm) on top, and (1") (25 mm) on bottom and sides. Important! When vent termination exits through foundation less than 20" below siding outcrop, the vent pipe must extend outward so that the horizontal vent terminal is located flush to, or beyond the outcrop siding. Information on Various Venting Routes and Components Important: It is always best to locate the fireplace in such a way that minimizes the number of offsets and horizontal vent length. Since it is very important that the venting system maintain its balance between the combustion air intake and the flue gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to. The graph showing the relationship between vertical and horizontal side wall venting will help to determine the various vent lengths allowable. The horizontal vent run refers to the total length of vent pipe from the flue collar of the fireplace to the face of the outer wall. The maximum horizontal vent run is 20 feet (6.10 m) when the vertical vent rise is 8 feet (2.44 m) (See Figure 20). Venting terminals shall not be recessed into wall or siding. Page 24 23552-4-0408 23552-4-0408 Page 25 Figure 36 A = *Clearance above grade, veranda, porch, deck or balcony [*12 inches (305 mm) minimum] B = clearance to window or door that may be opened [*12 inches (305 mm) minimum for appliance...

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