Carrier 58MTB Service And Maintenance Instructions

Also see for 58MTB: User's information manual Owner's manual Installation, start-up, and operating instructions

Contents

2SAFETY CONSIDERATIONSRecognize safety information. This is the safety--alert symbol .When you see this symbol on the furnace and in instructions ormanuals, be alert to the potential for personal injury.Understand the signal words DANGER, WARNING, andCAUTION. These words are used with the safety--alert symbol.DANGER identifies the most serious hazards which will result insevere personal injury or death. WARNING signifies a hazardwhich could result in personal injury or death. CAUTION is usedto identify unsafe practices which may result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability, oroperation.Installing and servicing heating equipment can be hazardous due togas and electrical components. Only trained and qualifiedservice agency personnel should install, repair, or serviceheating equipment. Untrained personnel can perform basicmaintenance functions described in User’s InformationManual such as cleaning and replacing air filters.All other operations must be performed by trained servicepersonnel. When working on heating equipment, observeprecautions in the literature, on tags, and on labels attached to orshipped with the unit and other safety precautions that may apply.Follow all safety codes including the National Fuel Gas Code(NFGC) NFPA 54--2006/ANSI Z223.1--2006 in the USA, CSAB149.1--05 National Standard of Canada, Natural Gas and PropaneInstallation Codes (NSCNGPIC) in Canada, and the InstallationStandards, Warm Air Heating and Air Conditioning Systems(NFPA 90B) ANSI/NFPA 90B. Wear safety glasses and workgloves. Have a fire extinguisher available during start--up andadjustment procedures and service calls.UNIT DAMAGE HAZARDFailure to follow this caution may result in damage tofurnace.Label all wires prior to disconnection when servicingcontrols. Wiring errors can cause improper and dangerousoperation.CAUTION!GENERALThis furnace can be installed as a direct vent (2--pipe) or non--directvent (1--pipe) condensing gas furnace. These instructions arewritten as if the furnace is installed in an upflow application. Anupflow furnace application is where the blower is located belowthe combustion and controls section of the furnace, andconditioned air is discharged upward. Since this furnace can beinstalled in any of the 4 positions shown in Fig. 2, you may need torevise your orientation to component location accordingly.¤¥ ¥ ¥ ¥ ¥U L T R A H I G H E F F I C I E N C YG A S F U R N A N C E¤A05079Fig. 1 -- Multipoise Furnace in Upflow OrientationUPFLOWDOWNFLOWHORIZONTALLEFTAIRFLOW AIRFLOWAIRFLOWAIRFLOWHORIZONTALRIGHTA93041Fig. 2 -- Multipoise OrientationELECTROSTATIC DISCHARGE (ESD)PRECAUTIONSUNIT DAMAGE HAZARDFailure to follow this caution may damage furnacecomponents.Electrostatic discharge can affect electronic components.Take precautions during furnace installation and servicingto protect the furnace electronic control. Precautions willprevent electrostatic discharges from personnel and handtools which are held during the procedure. Theseprecautions will help to avoid exposing the control toelectrostatic discharge by putting the furnace, the control,and the person at the same electrostatic potential.CAUTION!58MTB