valutazioni - 2, GPA: 3
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A terminal shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings. Local codes or regulations may require different clearances. Do not allow the inside liner to bunch up on horizontal or vertical runs and elbows. Keep it pulled tight. A 1-1/4" air gap all around between the inner liner and outer stove pipe is required for safe operation. Use a firestop when penetrating interior walls, floor or ceiling. DIRECT VENT SPECIFICS -GDS28 VENTING LENGTHS AND AIR TERMINAL LOCATIONS Use only Wolf Steel or Simpson Dura-Vent Model DV-GS venting components. Minimum and maximum vent lengths, for both horizontal and vertical installations, and air terminal locations for either system are set out in this manual and must be adhered to. For Simpson Dura-Vent, follow the installation procedure provided with the venting components. Both Wolf Steel and Simpson Dura-Vent venting components may have a 0" rise per foot on horizontal runs. When using Wolf Steel venting components, use only the following vent kits: WALL TERMINAL KIT GD175 (7-1/2' of venting included), or 1/12 TO 7/12 PITCH ROOF TERMINAL KIT GD110, 8/12 TO 12/12 ROOF TERMINAL KIT GD111, FLAT ROOF TERMINAL KIT GD112 or STOVE PERISCOPE KIT GD180 (for wall penetration below grade) in conjunction with the appropriate venting components. For optimum performance, it is recommended that all horizontal runs have a minimum . inch rise per foot. These vent kits allow for either horizontal or vertical venting of the stove. FIGURES 3, 4, & 5. The maximum number of 4" flexible connections is two horizontally or three vertically (excluding the stove and the air terminal connections). FIGURE 3 When terminating vertically, the minimum vertical rise is 34 inches above the stove and the maximum vertical rise is 40 feet. Deviation from the minimum vertical vent length can create difficulty in burner start-up and/or carboning. Use an adjustable pipe as the final length of rigid piping to the stove for ease of installation. W415-0153 / A / 10.29.01 6 W415-0153 / A / 10.29.01 HORIZONTAL RUN NOT TO EXCEED VERTICAL RISE SPECIAL INSTALLATION EXAMPLE When a horizontal offset is required in a through-the-roof installation, the following procedure for vent length calculations must be followed: In an installation as shown in FIGURE 7, lengths A and C are known based on room height and roof requirements. Length C must never be less than 29 inches. Any 90° and 45° elbows must be calculated as 5 feet of venting each. The allowable horizontal run can be calculated using these parameters. In this example, the total vertical height is 20 feet (length "A" is required to be 11 feet while length "C" needs to be 9 feet). The maximum vertical length is 40 feet and all runs and elbows must be subtracted from this maximum vertical length. The maximum allowable horizontal run that "B" can be is: 40 ft. (maximum vertical run length) -11 ft. (through the roof vertical rise "A") -10 ft. (2 - 90° elbow) - 9 ft. (vertical run "C") 10 ft. (maximum allowable horizontal length for "B") The length of "B" must never be greater than the length of "A" and "C" combined. OFFSET INSTALLATION EXAMPLE FIGS 5 FIGURE 4 If a first run of 72 inches is required, using the "First Vent Run" on the chart shows that a maximum second run of 48 inches is allowable. IF NECESSARY, THE FIRST RUN AND THE SECOND RUN MAY BE REVERSED. REQUIRED V E R T I C A L RISE FROM FIREPLACE TO FIRST ELBOW IN INCHES FIGURE 6 CALCULATED HORIZONTAL VENT RUN IN FEET For optimum flame appearance and stove performance, keep the vent length and number of elbows to a minimum. The air terminal must remain unobstructed at all times. Examine the air terminal at least once a year to verify that it is unobstructed and undamaged. The maximum horizontal run is 34 inches with a 90° elbow located 29" above the stove. FIGURE 4. The maximum horizontal run with a 57 inch vertical rise immediately above the stove is 20 feet . Figures 5. If vertical rises greater than 57 inches are necessary, the increased rise must be deducted from the maximum horizontal run. Use chart, Figure 6, to calculate horizontal runs for vertical rises between 29 and 57 inches. When calculating maximum run lengths, include 10 feet for each 90° elbow or 5 feet for each 45° elbow. Do not include the first elbow directly off the unit. FIGURE 8 57" first run 72" second run 48" FIGURE 9 C B A FIGURE 7 7 W415-0153 / A / 10.29.01 FIGURE 10 AIR TERMINAL INSTALLATIONS: * Recommended to prevent condensation on windows and thermal breakage ** It is recommended to use a heat shield and to maximize the distance to vinyl clad soffits. *** The periscope GD-201 requires a minimum 18 inches clearance from an inside corner. **** This is a recommended distance. For additional requirements check local codes. † Three feet above if within 10 feet horizontally. ‡ A vent shall not terminate directly above a sidewalk or paved driveway that...
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