HEATING & COOLING58VCA58VUAVariable-Speed Gas-Fired Condensing FurnacesService and Maintenance InstructionsFor Sizes 060-100. Series 100NOTE; Read the entire instruction manual before starting theinstallation.SAFETY CONSIDERATIONSInstalling and servicing heating equipment can be hazardousdue to gas and electrical components. Only trained and qualifiedpersonnel should install, repair, or service heating equipment.Untrained personnel can perform basic maintenance functionssuch as cleaning and replacing air filters. All other operations mustbe performed by trained service personnel. When working onheating equipment, observe precautions in the literature, tags, andlabels attached to or shipped with the unit and other safetyprecautions that may apply.Follow all safety codes, including NFPA 54/ANSI Z223.1-1988,National Fuel Gas Code. Wear safety glasses and work gloves.Have a fire extinguisher available during start-up and adjustmentprocedures and service calls.Recognize safety information. This is the safety-alert symbol ^ .When you see this symbol on the unit and in instructions ormanuals, be alert to the potential for personal injury.Understand the signal word —DANGER, WARNING, or CAU¬TION. These words are used with the safety-alert symbol. DAN¬GER identifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies hazards that couldresult in personal injury or death. CAUTION is used to identifyunsafe practices, which would result in minor personal injury orproduct and property damage.CARE AND MAINTENANCEFor continuing high performance and to minimize possible equip¬ment failure, it is essential that maintenance be performed annuallyon this equipment. Consult your local dealer for maintenance andthe availability of a maintenance contract.Fig. 1—Model 58VUA Upflow FurnaceA92095Fig. 2—Model 58VCA Downflow FurnaceManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 101 Catalog No. 565-997 Printed in U.S.A. Form 58V-1SM Pg 1 6-92 Replaces: 58SXB-1SMBook 1 4Tab 6a 8a