Carrier 58DFA manual

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Table of contents for the manual

  • Page 1

    58DFA, 58GFA Induced-Combustion Furnaces Service and Maintenance Instructions For Sizes 065-150 Series 120 NOTE: Read the entire instruction manual before starting the installation. Index Page SAFETY CONSIDERATIONS .....................................................1 CARE AND MAINTENANCE..................................................1-8 Air Fi[...]

  • Page 2

    The ability to properly perform maintenance on this equip- ment requires certain expertise, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User’s Manual. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE T[...]

  • Page 3

    b. Remove blower access door after removing 2 screws. c. Reach up behind top plate, tilt filters toward center of return-air plenum, remove filters, and replace or clean as needed. d. Furnaces are equipped with permanent, washable filters. Clean filters with tap water. Spray water through filter in opposite direction of airflow. e. Rinse and let dr[...]

  • Page 4

    9. Mark blower wheel, motor, and motor support in relation to blower housing before disassembly to ensure proper reassem- bly. 10. Loosen setscrew holding blower wheel on motor shaft. 11. Remove bolts holding motor mount to blower housing and slide motor and mount out of housing. Disconnect ground wire attached to blower housing before removing mot[...]

  • Page 5

    (6.) Insert brush end of cable in lower opening of cell, and proceed to clean 2 lower passes of cell in same manner as 2 upper passes. (7.) Repeat foregoing procedures until each cell in furnace has been cleaned. (8.) Remove residue from each cell using vacuum cleaner. (9.) Clean burner assembly using vacuum cleaner with soft brush attachment. (10.[...]

  • Page 6

    Fig. 8—Heating and Cooling Application Wiring Diagram A78461 115-VOLT FIELD- SUPPLIED FUSED DISCONNECT AUXILIARY J-BOX CONTROL BOX 24-VOLT TERMINAL BLOCK TWO-WIRE HEATING- ONLY FOUR WIRE FIELD-SUPPLIED FUSED DISCONNECT CONDENSING UNIT TWO WIRE FURNACE R G C W R G Y GND GND FIELD 24-VOLT WIRING FIELD[...]

  • Page 7

    Fig. 9—Unit Wiring Diagram A92176 FU1 IDR PL1-3 PR-1 PR-2 SEC-1 SEC-2 TRAN 24VAC 115VAC BLWM LO MED LO MED HI HI COM CAP L2 COM 4 3 2 1 C CFR HFR PL4 NOTE#4 NOTE#8 EAC-1 EAC-2 L1 ILK EQUIPMENT GROUND TO 115V AC FIELD DISCONNECTIONS NOTE #5 NOTE#10 PL2 L1 L2 PL1-1 IDR PL1-4 ALS FL LS PL1-7 R Y W G C NOTE #1 CFR NOTE #10 PL1-2 PL1-6 NC NO PRS C [...]

  • Page 8

    A91253 Is 24VAC across pressure switch N/O contact & screw C on board? YES NO Is 24VAC across pressure switch N/O contact & screw C on board? Is heat exchanger pressure drop greater than 0.35-in. wc? Is 24VAC across gas valve? Is unit lit? Check/Replace: 1. Vent systems 2. Induce wheel 3[...]