Carrier 58MVB 3SM Gas Furnace Owners Manual

58MVB Deluxe 4 Way Multipoise Variable Capacity Condensing Gas Furnace Service and Maintenance Instructions For Sizes 040– 120, Series 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. Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified service agency personnel should install, repair, or service heating equipment. 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 5 Cleaning Heat Exchangers . 6 Flushing Collector Box and Drainage System 7 Servicing Hot Surface Igniter . 8 Electrical Controls and Wiring 9 Checking Heat Tape Operation (If Applicable) 10 Winterizing 10 WIRING DIAGRAMS 10 TROUBLESHOOTING . 12 ! 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 ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD 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.