SL280DFV Gas Furnace Installation Manual - Lennox

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Unit Dimensions − inches (mm) 3−1/8 (79) 9/16 (14) D FLUE OUTLET (Top) B RETURN AIR OPENING 19−7/16 (494) 9/16 (14) 9/16 (14) TOP VIEW A B 9/16 (14) 1−1/2 (38) Front Panel 27−3/4 (7705) 19−7/16 (494) 9/16 (14) 33 (838) 5−3/8 (137) Right 2−1/8 (54) Left ELECTRICAL INLET (Either Side) GAS PIPING INLET (Either Side) 6−5/8 (168) Right 7−1/8 (181) Left C Supply Air 3/4 (19) 19−1/4 (489) Supply Air FRONT VIEW SIDE VIEW Model No. A B C D in. mm in. mm in. mm in. mm SL280DF070V36A 14−1/2 368 13−3/8 340 13 330 4−3/4 121 SL280DF090V48B 17−1/2 446 16−3/8 416 16 406 6−1/4 159 SL280DF090V60C SL280DF110V60C 21 533 19−7/8 504 19−1/2 495 8 203 Page 2
Parts Arrangement FLUE CHASE CONTROL BOX (Includes two−stage integrated control, transformer and circuit breaker) BLOWER ASSEMBLY GASKET SECONDARY LIMIT INTERNAL FLUE PIPE ASSEMBLY DOOR INTERLOCK SWITCH PRIMARY LIMIT LOCATION ROLLOUT SWITCH HEAT EXCHANGER COMBUSTION AIR INDUCER PRESSURE SWITCHES COMBUSTION AIR INDUCER GAS VALVE INNER BLOWER ACCESS PANEL BURNER BOX ASSEMBLY ACCESS PANEL FIGURE 1 Page 3
Page 1: 2011 Lennox Industries Inc. Dallas,
Page 5 and 6: chilled air from entering the furna
Page 7 and 8: Confined Space A confined space is
Page 9 and 10: Downflow Installation Downflow unit
Page 11 and 12: Front Back Horizontal Downflow Appl
Page 13 and 14: Common Venting Using Tile−Lined I
Page 15 and 16: 18 − The common vent diameter mus
Page 17 and 18: Vent Height H (feet) 6 8 10 15 20 3
Page 19 and 20: Removal of the Furnace from Common
Page 21 and 22: Leak Check After gas piping is comp
Page 23 and 24: Generator Use − Voltage Requireme
Page 25 and 26: TABLE 13 SL280 Field Wiring Applica
Page 27 and 28: TABLE 13 SL280 Field Wiring Applica
Page 29 and 30: SL280DFV Schematic Wiring Diagram F
Page 31 and 32: Integrated Control HUM ACC HS/ CAI
Page 33 and 34: NOTE − The off portion of the sel
Page 35 and 36: BLOWER DATA SL280DF070V36A BLOWER P
Page 37 and 38: TABLE 20 SL280DFV, Non−Communicat
Page 39 and 40: Unit Start−Up FOR YOUR SAFETY REA
Page 41 and 42: High Altitude The manifold pressure
Page 43 and 44: Applications Using A Single−Stage
Page 45 and 46: SL280DFV BURNER, COMBUSTION AIR IND
Page 47 and 48: Planned Service The following items
Page 49 and 50: Integrated Control Diagnostic Codes
Page 51 and 52: Integrated Control Diagnostic Codes
Page 53 and 54:
Integrated Control Diagnostic Codes
Page 55 and 56:
Program Unit Capacity/Size Mode Pow
Page 57 and 58:
Troubleshooting: Heating Sequence o
Page 59 and 60:
Troubleshooting: Cooling Sequence o
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SL280DFV Gas Furnace Installation Manual - Lennox

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