From inside (document excerpt):
58CVA/CVX Variable Speed Induced Combustion Deluxe 4 Way Multipoise Furnace Installation, Start up, Operating, and Service and Maintenance Instructions Series 140/E 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 . 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 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 NOTE: Read the entire instruction manual before starting the installation. Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1-2006E, 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. REGISTERED Upflow and Horizontal Furnaces . 18 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 ama ISO 9001:2000 CERTIFIED 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. ! CAUTION FURNACE RELIABILITY HAZARD Failure to follow this caution may result in unit component damage. Application of this furnace should be indoors with special attention given to vent sizing and material, gas input rate, air temperature rise, unit leveling, and unit sizing. Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in literature, on tags, and on labels attached to or shipped with furnace and other safety precautions that may apply. These instructions cover minimum requirements and conform to existing national standards and safety codes.