INSTALLATION INSTRUCTIONS - Lennox

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EXHAUST TERMINATION INTAKE TERMINATION EXHAUST 12" (305) ABOVE AVERAGE SNOW ACCUMULATION INTAKE FIGURE 22 Inches (mm) FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION DIRECT VENT CONCENTRIC ROOFTOP TERMINATION (71M80, 69M29 or 60L46) Inches (mm) FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION EXHAUST INTAKE INTAKE TERMINATION EXHAUST TERMINATION 12" (305) Min. above grade or average snow accumulation. INTAKE VENT 1/2" (13) Foam Insulation in Unconditioned Space FIELD− PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION Inches (mm) EXHAUST VENT INTAKE VENT DIRECT VENT WALL TERMINATION KIT (22G44, 44J40, 30G28 or 81J20) FIGURE 25 5" (127) 18" MAX. (457) EXHAUST VENT EXHAUST VENT 5−1/2" (140) Front View Top View INTAKE VENT OUTSIDE WALL 12" (305) Front View EXHAUST VENT DIRECT VENT CONCENTRIC WALL TERMINATION (71M80, 69M29 or 60L46) FIGURE 23 Inches (mm) INTAKE VENT Side View Inches(mm) UNCONDITIONED SPACE OUTSIDE WALL 12" (305) MAX. for 2" (51) 8 (203) MIN. OPTIONAL VENT TERMINATION FOR MULTIPLE UNIT <strong>INSTALLATION</strong> OF DIRECT VENT WALL TERMINATION KIT (22G44, 44J40, 30G28 or 81J20) FIGURE 26 PROVIDE SUPPORT FOR INTAKE AND EXHAUST LINES EVERY 36" (914) FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION 1/2" (13) FOAM INSULATION IN UNCONDITIONED SPACE SIDE VIEW DIRECT VENT WALL RING TERMINATION (15F74) See venting table 5 for maximum venting lengths with this arrangement. FIGURE 24 12" (305) ABOVE AVERAGE SNOW ACCUMULATION 1/2" (13) FOAM INSULATION SIZE TERMINATION PIPE PER TABLE 6. Page 22
INTAKE AIR GRADE 12" (305) MAX. for 2" (51) 20" (508) MAX. for 3" (76) 8" (203) Minimum Inches (mm) EXHAUST AIR 12" (305) Minimum ABOVE GRADE OR AVERAGE SNOW ACCUMULATION INTAKE AIR 5" (127) FIGURE 27 COVER EXHAUST VENT WITH 1/2" (13) FOAM INSULATION 12" MIN. (305) Above Grade or average snow accumulation Side View GRADE ÉÉÉÉÉÉÉÉÉÉ Front ÉÉÉÉÉÉÉÉÉÉ View DIRECT VENT TERMINATION WALL TERMINATION KIT (22G44, 44J40, 30G28 or 81J20) EXTENDED VENT FOR GRADE CLEARANCE 12" (305) 5-1/2" (140) EXHAUST AIR G43UF DIRECT VENT APPLICATION USING EXISTING CHIMNEY 8" − 12" (203mm − 305mm) 3" − 8" (76mm− 203mm) STRAIGHT−CUT OR ANGLE−CUT IN DIRECTION OF ROOF SLOPE * EXHAUST VENT 1/2" (13mm) WEATHERPROOF INSULATION 12" (305mm) ABOVE AVE. SNOW ACCUMULATION Inches(mm) SIZE TERMINATION PIPE PER TABLE 6. MINIMUM 12" (305mm) ABOVE ROOF OR AVERAGE SNOW ACCUMULATION INTAKE PIPE INSULATION (optional) SHEET METAL TOP PLATE SHOULDER OF FITTINGS PROVIDE SUPPORT OF PIPE ON TOP PLATE ALTERNATE INTAKE PIPE 3" (76) OR 2" (51) PVC PROVIDE SUPPORT FOR EXHAUST LINES UNCONDITIONED ATTIC SPACE INSULATE TO FORM SEAL 3" − 8" (76mm− 203mm) EXTERIOR PORTION OF CHIMNEY *SIZE TERMINATION PIPE PER TABLE 6. NOTE − Do not discharge exhaust gases directly into any chimney or vent stack. If vertical discharge through an existing unused chimney or stack is required, insert piping inside chimney until the pipe open end is above top of chimney and terminate as illustrated. In any exterior portion of chimney, the exhaust vent must be insulated. FIGURE 28 Details of Exhaust Piping Terminations for Non-Direct Vent Applications Exhaust pipes may be routed either horizontally through an outside wall or vertically through the roof. In attic or closet installations, vertical termination through the roof is preferred. Figures 29 through 32 show typical terminations. 1 − Exhaust piping must terminate straight out or up as shown. The termination pipe must be sized as listed in table 6.The specified pipe size ensures proper velocity required to move the exhaust gases away from the building. 2 − On field supplied terminations for side wall exits, exhaust piping should extend a maximum of 12 inches (305mm) beyond the outside wall. See figure 30. NON−DIRECT VENT ROOF TERMINATION KIT (15F75 or 44J41) 1/2" (13) ARMAFLEX INSULATION IN UNCONDITIONED SPACE FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION Inches (mm) FIGURE 29 FIGURE 30 12" (305) Max. for 2" (51) TOP VIEW NON−DIRECT VENT WALL RING KIT (15F74) 1/2" (13) ARMAFLEX INSULATION PVC REDUCER SIZE TERMINATION PIPE PER TABLE 6. Page 23
Page 1 and 2: 2005 Lennox Industries Inc. Dallas,
Page 3 and 4: G43UF Parts Arrangement G43UF PARTS
Page 5 and 6: In order to ensure proper unit oper
Page 7 and 8: CAUTION Do not install the furnace
Page 9 and 10: The G43UF gas furnace can be instal
Page 11 and 12: Screw Removing the Bottom Panel Bot
Page 13 and 14: TABLE 3 OUTDOOR TERMINATION KITS AN
Page 15 and 16: Joint Cementing Procedure All cemen
Page 17 and 18: TYPICAL AIR INTAKE PIPE CONNECTIONS
Page 19 and 20: VENT TERMINATION CLEARANCES FOR NON
Page 21: Details of Intake and Exhaust Pipin
Page 25 and 26: CAP O−RINGS CONDENSATE ASSEMBLY H
Page 27 and 28: Nominal Iron Pipe Size −Inches(mm
Page 29 and 30: G43UF and CONDENSING UNIT THERMOSTA
Page 31 and 32: INTEGRATED CONTROL BOARD (Automatic
Page 33 and 34: Heating Sequence Of Operation When
Page 35 and 36: Testing for Proper Venting and Suff
Page 37 and 38: Blower Motor Performance G43UF−24
Page 39 and 40: Service WARNING ELECTRICAL SHOCK, F
Page 41 and 42: Planned Service A service technicia
Page 43 and 44: Troubleshooting: Heating Sequence o
Page 45 and 46: Troubleshooting: Continuous Fan Seq
Page 47: Requirements for Commonwealth of Ma

INSTALLATION INSTRUCTIONS - Lennox

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