ML193DF Gas Furnace Installation Manual - Lennox

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<strong>ML193DF</strong> 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 1/2" (13mm) FOAM INSULATION SIZE TERMINATION PIPE PER TABLE 8. Minimum 12" (305MM) above chimney top plate 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" (76mm) OR 2" (51mm) 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 8. 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 37 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 38 through 41 show typical terminations. 1 − Exhaust piping must terminate straight out or up as shown. The termination pipe must be sized as listed in table 8.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 exit, exhaust piping may extend a maximum of 12 inches (305mm) for 2" PVC and 20 inches (508mm) for 3" (76mm) PVC beyond the outside wall. See figure 39. NON−DIRECT VENT ROOF TERMINATION KIT (15F75 or 44J41) 1/2" (13mm) ARMAFLEX INSULATION IN UNCONDITIONED SPACE FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION SIZE TERMINATION PIPE PER TABLE 8. FIGURE 38 12" (305mm) MAX. for 2" (51mm) 20" (508mm) MAX. for 3" (76mm) 1/2" (13mm) ARMAFLEX INSULATION PVC REDUCER 12" MIN. (305mm) Above Grade or average snow accumulation NON−DIRECT VENT FIELD SUPPLIED WALL TERMINATION OR (15F74) WALL TERMINATION KIT FIGURE 39 3 − If exhaust piping must be run up a side wall to position above snow accumulation or other obstructions, piping must be supported every 24 inches (610mm) as shown in figure 40. When exhaust piping must be run up an outside wall, any reduction in exhaust pipe size must be done after the final elbow. Page 26
UNCONDITIONED SPACE 6" (152mm) Max *WALL SUPPORT OUTSIDE WALL FIELD−PROVIDED REDUCER MAY BE REQUIRED TO ADAPT LARGER VENT PIPE SIZE TO TERMINATION 12" (305mm) MAX. for 2" (51mm) 20" (508mm) MAX. for 3" (76mm) SIZE TER- MINATION PIPE PER TABLE 8. 12" (305mm) ABOVE GRADE OR AVERAGE SNOW ACCUMULATION NOTE − If necessary the condensate trap may be installed up to 5´ away from the furnace. Use PVC pipe to connect trap to furnace condensate outlet. Piping from furnace must slope down a minimum of 1/4" per ft. toward trap. CONDENSATE TRAP AND PLUG LOCATIONS 1/2" (13mm) FOAM INSULATION IN UNCONDITIONED SPACE *Use wall support every 24" (610). Use two supports if extension is greater than 24" but less than 48". FIGURE 40 1/2" (13mm) FOAM INSULATION NON−DIRECT VENT FIELD SUPPLIED WALL TERMINATION EX- TENDED OR (15F74) WALL TERMINATION VENT PIPE EXTENDED Trap (same on right side) 1−1/2 in. Plug (same on left side) <strong>ML193DF</strong> NON−DIRECT VENT APPLICATION USING EXISTING CHIMNEY SIZE TERMINATION PIPE PER TABLE 8. STRAIGHT−CUT OR ANGLE−CUT IN DIRECTION OF ROOF SLOPE Minimum 12" (305MM) above chimney top plate or average snow accumulation INSULATE TO FORM SEAL SHEET METAL TOP PLATE 3" − 8" (76mm− 203mm) 3" − 8" (76mm− 203mm) 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 41 EXHAUST VENT 1/2" (13mm) WEATHERPROOF INSULATION SHOULDER OF FITTINGS PROVIDE SUPPORT OF PIPE ON TOP PLATE EXTERIOR PORTION OF CHIMNEY Condensate Piping This unit is designed for either right- or left-side exit of condensate piping. Refer to figure 42 for condensate trap locations. FIGURE 42 1 − Determine which side condensate piping will exit the unit, location of trap, field−provided fittings and length of PVC pipe required to reach available drain. 2 − Remove plug (figure 42) from the cold end header box at the appropriate location on the side of the unit. Install field−provided 1/2" NPT male fitting into cold end header box. Use teflon tape or appropriate pipe dope. 3 − Install the cap over the clean out opening at the base of the trap. See figure 45. NOTE − Vinyl tubing may be used for condensate drain. Tubing must be 1−1/4" OD X 1" ID and should be attached to the drain on the trap using a hose clamp. 4 − Install drain trap using appropriate PVC fittings, glue all joints. Glue the provided drain trap as shown in figure 45. Route the condensate line to an open drain. NOTE − If necessary the condensate trap may be installed up to 5 feet away from the furnace. Piping from furnace must slope down a minimum of 1/4" per ft. toward trap. Page 27
Page 1 and 2: 2010 Lennox Industries Inc. Dallas,
Page 3 and 4: ML193DF Parts Arrangement CONTROL B
Page 5 and 6: NOTE − Furnace must be adjusted t
Page 7 and 8: All gas-fired appliances require ai
Page 9 and 10: ML193DF09048C BLOWER MOTOR RIGID LE
Page 11 and 12: TABLE 2 COMBUSTIBLE FLOORING BASE O
Page 13 and 14: IMPORTANT ML193DF exhaust and intak
Page 15 and 16: 2 − When furnace is installed in
Page 17 and 18: TYPICAL EXHAUST PIPE CONNECTIONS Pi
Page 19 and 20: VENT TERMINATION CLEARANCES FOR NON
Page 21 and 22: Details of Intake and Exhaust Pipin
Page 23 and 24: FIELD SUPPLIED WALL TERMINATION OR
Page 25: If intake and exhause pipe is less
Page 29 and 30: OPTIONAL Condensate Drain Connectio
Page 31 and 32: MANUAL MAIN SHUT−OFF VALVE (With
Page 33 and 34: Left side INTERIOR MAKE−UP BOX (F
Page 35 and 36: TYPICAL ML193DF WIRING DIAGRAM FIGU
Page 37 and 38: Placing the furnace into operation:
Page 39 and 40: TABLE 14 Conversion Kit and Pressur
Page 41 and 42: BLOWER DATA ML193DF045P36B PERFORMA
Page 43 and 44: 19 − Reinstall heat exchanger int
Page 45 and 46: Troubleshooting: Heating Sequence o
Page 47 and 48: Troubleshooting: Cooling Sequence o
Page 49 and 50: Repair Parts List The following rep
Page 51 and 52: 1 UNIT OPERATION HEATING MODE GAS M

ML193DF Gas Furnace Installation Manual - Lennox

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