From inside (document excerpt):
58CVA/CVX Variable Speed, Induced Combustion Deluxe 4 Way Multipoise Gas Furnace Installation, Start up, Operating, and Service and Maintenance Instructions Series 150/F SAFETY CONSIDERATIONS 2 INTRODUCTION 4 CODES AND STANDARDS 4 Safety . 4 General Installation 4 Combustion and Ventilation Air 4 Duct Systems . 4 Acoustical Lining and Fibrous Glass Duct . 4 Gas Piping and Gas Pipe Pressure Testing .
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4 Electrical Connections 4 Venting . 4 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE . 4 LOCATION . 5 AIR FOR COMBUSTION AND VENTILATION . 8 Outdoor Combustion Air Method 9 The Standard Method: 9 Combination of Indoor and Outdoor Air . 10 INSTALLATION 10 Bottom Return Air Inlet 10 Side Return Air Inlet . 10 Leveling Legs (If Desired) 11 Bottom Return Air Inlet 11 Suspended Furnace Support . 11 Platform Furnace Support . 11 Roll-Out Protection . 12 Bottom Return Air Inlet 12 Side Return Air Inlet . 12 Filter Arrangement 13 AIR DUCTS 13 General Requirements 13 Ductwork Acoustical Treatment 13 Supply Air Connections 14 Upflow and Horizontal Furnaces . 14 Downflow Furnaces . 15 Return Air Connections 18 Downflow Furnaces . 18 1 Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program. For verification of certification for individual products, go to www.ahridirectory.org. ER TIFIE Upflow and Horizontal Furnaces . 18 GAS PIPING . 19 ELECTRICAL CONNECTION . 20 ACCESSORIES . 22 VENTING . 22 START-UP, ADJUSTMENT, AND SAFETY CHECK . 34 General 34 Start-Up Procedures 37 Adjustments . 37 Check Safety Controls . 45 Checklist . 46 SERVICE AND MAINTENANCE PROCEDURES . 46 General 46 Care and Maintenance . 47 Sequence of Operation . 52 Wiring Diagram 56 Troubleshooting 56 Accessory List . 59 PARTS REPLACEMENT INFORMATION GUIDE . 60 DE S I GN ISO 9001:2000 Always Ask For NOTE: Read the entire instruction manual before starting the installation. Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1-2009E, with permission of National Fire Protection Association, Quincy, MA 02269 and American Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI on the referenced subject, which is represented only by the standard in its entirety. D REGISTERED C SAFETY CONSIDERATIONS ! WARNING FIRE, EXPLOSION, ELECTRICAL SHOCK, AND CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in dangerous operation, personal injury, death, or property damage. Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified service agency, local gas supplier, or your distributor or branch for information or assistance. The qualified service agency must use only factory-authorized and listed kits or accessories when modifying this product.