Carrier 58MCB 1SM Gas Furnace Owners Manual

58MCB 4-Way Multipoise Fixed-Capacity Condensing Gas Furnace Visit www.carrier.com Service and Maintenance Instructions For Sizes 040–140, Series 100 FIRE OR EXPLOSION HAZARD Failure to follow this warning could cause corrosion of heat exchanger, fire, 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.

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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. TABLE OF CONTENTS 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 .3 Cleaning Burners 5 Cleaning Heat Exchangers 6 Primary Heat Exchangers 6 Secondary Heat Exchangers 8 Flushing Collector Box and Drainage System 8 Servicing Hot Surface Igniter .9 Electrical Controls and Wiring .9 Checking Heat Tape Operation (If Applicable) 10 Winterizing 10 WIRING DIAGRAM .11 TROUBLESHOOTING .11 Status Codes 11 Component Tests 12 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, CAUTION, and NOTE. 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 hazards 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. A93040 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. 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 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. ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in possible damage to this equipment, serious 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. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Printed in U.S.A. Catalog No. 58MCB-1SM Pg 1 8-05 Replaces: 58MCA-10SM Tab 6a 8a ELECTRICAL SHOCK AND UNIT DAMAGE HAZARD Failure to follow this caution may result in minor personal injury or damage to furnace. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. This GENERAL furnace can be installed as a direct vent (2-pipe) or non-direct vent (1-pipe) condensing gas furnace. These instructions are written as if the furnace is installed in an upflow application. An upflow furnace application is where the blower is located below the combustion and controls section of the furnace, and conditioned air is discharged upward. Since this furnace can be installed in any of the 4 positions shown in Fig. 2, you may need to revise your orientation to component location accordingly. AIRFLOW A05078 Fig. 1–Multipoise Furnace in Upflow Orientation 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. Untrained personnel can perform basic maintenance functions described in User’s Information Manual such as cleaning and replacing air filters. All other operations must be performed by trained and qualified service agency personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply.

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