Assessments - 4, GPA: 4.3
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• Trees, buildings, roof lines and wind conditions affect performance. • Chimney height may need adjustment if smoking or overdraft occurs. Additional support for tall chimneys Install roof flashing according to minimum requirements Maintain minimum clearances to combustibles as specified Offsets/returns may not exceed 30° from vertical Lock chimney sections together firmly to resist movement Ceiling firestops are required where chimney passes through ceiling or floor Support straps for returns must be secured to adequate framing Termination Cap Storm Collar Offsets and returns must be secured with the screws provided (outer pipe only) 88 Chimney Assembly NOTICE: Chimney performance may vary. • Trees, buildings, roof lines and wind conditions affect performance. • Chimney height may need adjustment if smoking or overdraft occurs. Figure 8.1 Typical Chimney System - Guidelines for Chimney System Installation Heatilator • A36R & A42R • 28376 • Rev AF • 11/08 A. Chimney Requirements Determine the chimney components needed to complete your particular installation: Measure vertical distances from the base of the fireplace as shown in Figure 8.2. • Measure the total vertical height of the fireplace installation from the base of the fireplace assembly to • Minimum overall straight height 16.5 ft (5.03 m) the approximate location of the bottom of the termination • Minimum height with offset/return 16.5 ft (5.03 m) cap. • Maximum height 90 ft (27.43 m) • Subtract the effective height of the fi replace assembly • Maximum chimney length between an offset 20 ft (6.1 m) (see Figure 8.2) from the total vertical height to determineand return the overall height of the chimney installation. • Maximum distance between chimney 35 ft (10.67 m) • Create a schematic for your application similar to Figure stabilizers 8.2 showing components required (referring to Table • Double offset/return minimum height 20 ft (6.1 m) 8.1). Figure 8.1 identifies those components and where • Maximum unsupported chimney length 6 ft (1.83 m) used. between the offset and return • Install a ceiling firestop whenever the chimney penetrates • Maximum unsupported chimney height above 35 ft (10.67 m) a floor/ceiling. the fireplace • Maximum unsupported chimney above roof 6 ft (1.83 m) NOTICE: A maximum of two pairs of offsets and returns may be used. WARNING! Risk of Fire! You must maintain 2 in. (51 CAUTION! Risk of Fire and/or Asphyxiation! DO mm) air space clearance to insulation and other combus-NOT connect this fireplace to a chimney fl ue servicing tible materials around the chimney system. Failure to do another appliance. DO NOT connect to any air distribuso may cause overheating and fire. tion duct or system. These actions could cause over heating/fire in the chimney flue, or release of exhaust fumes into the living areas. Table 8.1 HEIGHT OF CHIMNEY COMPONENTS in. mm Chimney Stabilizer SL3 4-3/4 121 Ceiling Firestops FS338 0 0 FS339 0 0 FS340 0 0 Offsets/Returns SL315 13-3/8 340 SL330 15-1/2 394 Roof Flashing RF370 0 0 RF371 0 0 Chimney Sections* SL306 4-3/4 121 SL312 10-3/4 273 SL318 16-3/4 425 SL324 22-3/4 578 SL336 34-3/4 883 SL348 46-3/4 1187 * Dimensions reflect effective height. 20 ft (6.10 m) max. pipe between an offset & return Ceiling firestop 35 ft (10.7 m) max. straight unsupported chimney height 16.5 ft (5.03 m) min. height/single offset-return 20 ft. (6.10 m) min. height/double offset-return 90 ft (27.4 m) max. height 6 ft (1.83 m) max. unsupported chimney above roof 41-1/4 in. (1048 mm) Effective Height Figure 8.2 Chimney Requirements Heatilator • A36R & A42R • 28376 • Rev AF • 11/08 B. Using Offsets/Returns • Use an offset/return to bypass overhead obstructions. • An offset and return can be used as a single entity or separated by chimney section(s). WARNING! Risk of Fire! DO NOT use offset/returns greater than 30°. Chimney draft will be restricted and could cause overheating and fire. • Measure the shift needed to avoid the overhead obstruction. Refer to dimension A in Figure 8.3. • Find the appropriate A dimension listed in Table 8.2. • The B dimension coinciding with the A dimension measurement in Table 8.2 represents the required vertical clearance needed to complete the offset/return. • Read across the chart to find the number of chimney sections/model numbers needed between the offset and return. Example: Your “A” dimension from Figure 8.3 is 14 1/2 in. (368 mm). Using Table 8.2 the dimension closest to, but not less than 14 1/2 in. (368 mm) is 14 1/2 in. (368 mm) using a 30° offset/return. You determine from the table that you need 34 1/8 in. (867 mm) (Dimension “B”) between the offset and return. The chimney component that best fits your applica 1-1/4 in. (32 mm) tion is one SL324. OVERLAP Figure 8.3 Chimney Offset/Return Table 8.2 A B B Height B Height mm 394 473 552 603 686 737 816 867 949 1080 1133 1213 1343 1397 1476 1607 1740 1873 1953 2137 2216 2400 15-degree SL306 SL312 SL318 SL324 SL336 SL348 30-degree A Offset A O...
Este manual também é adequado para os modelos :Lareiras - A36R (4.22 mb)
Lareiras - A36RH (4.22 mb)
Lareiras - A42RH (4.22 mb)