Carrier 58MCB 4SM Gas Furnace Owners Manual

58MCB 4 Way Multipoise Fixed Capacity Condensing Gas Furnace Service and Maintenance Instructions For Sizes 040– 120, Series 110 & 120 NOTE: Read the entire instruction manual before starting the installation. SAFETY CONSIDERATIONS Recognize safety information. This is the safety-alert symbol. When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS . 1 GENERAL . 2 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS. 2 CARE AND MAINTENANCE . 3 Cleaning and/or Replacing Air Filter 3 Blower Motor and Wheel Maintenance 4 Cleaning Burners . 6 Cleaning Heat Exchangers 7 Primary Heat Exchangers 6 Secondary Heat Exchangers 7 Flushing Collector Box and Drainage System . 8 Servicing Hot Surface Igniter . 10 Electrical Controls and Wiring 11 Checking Heat Tape Operation (If Applicable) . 11 Winterizing 13 WIRING DIAGRAM 13 TROUBLESHOOTING 13 Status Codes . 13 Component Tests 14 ! WARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD Failure to follow this warning could result in possible damage to this equipment, personal injury, or death. The ability to properly perform maintenance on this equipment 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. ! WARNING FIRE OR EXPLOSION HAZARD Failure to follow this warning could property damage, personal injury, or death. Never store anything on, near, or in contact with the furnace, such as: 1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools. 2. Soap powders, bleaches, waxes or other cleaning compounds, plastic or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry cleaning fluids, or other volatile fluids. 3. Paint thinners and other painting compounds, paper bags, or other paper products. ! ELECTRICAL HAZARD WARNING SHOCK, FIRE, OR EXPLOSION Failure to follow safety warnings exactly could result in dangerous operation, personal injury, death, or property damage. – Before servicing, disconnect all electrical power to furnace. -When servicing controls, label all wires prior to disconnecting. Reconnect wires correctly. – Verify proper operation after servicing.