Carrier 58MSA 5SM Gas Furnace Owners Manual

58MSA 4-Way Multipoise Fixed-Capacity Condensing Gas Furnace Visit www.carrier.com Service and Maintenance Instructions For Sizes 040–120, Series 140 TABLE OF CONTENTS SAFETY CONSIDERATIONS .2 ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death, or property damage. Improper servicing could result in dangerous operation, serious indury, 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. GENERAL 2 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 2 CARE AND MAINTENANCE .2 Cleaning and/or Replacing Air Filter .3 Blower Motor and Wheel Maintenance .3 Cleaning Burners 4 Cleaning Heat Exchangers 5 Primary Heat Exchanger 5 Secondary Heat Exchanger 6 Flushing Collector Box and Drainage System 6 Servicing Hot Surface Igniter .6 Electrical Controls and Wiring .8 Checking Heat Tape Operation (If Applicable) 8 Winterizing 8 WIRING DIAGRAM .10 TROUBLESHOOTING .10 Status Codes 10 Component Test 10 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. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS 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. Failure to follow this warning can cause corrosion of the heat exchanger, fire, personal injury, or death. NOTE: Read the entire instruction manual before starting the installation.