Carrier 58MCA Service And Maintenance Instructions

Also see for GAS FURNACE 58MVP: Installation, start-up, and operating instructions User's information manual User manual User's information manual User's information manual

Contents

Carrier 58MCA Service And Maintenance Instructions Manual pdf 1 page image

58MCA, 58MXA, 58MVPDeluxe Multipoise Gas-FiredCondensing FurnacesService and Maintenance InstructionsFor Sizes 040—120, Series 111NOTE: Read the entire instruction manual before performing anyservice or maintenance.Index PageSAFETY CONSIDERATIONS..................................................1-2ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSPROCEDURE ...........................................................................2GENERAL......................................................................................2CARE AND MAINTENANCE................................................2-13Clean and/or Replace Air Filter............................................2-3Blower Motor and Wheel Maintenance................................3-4Clean Burners ........................................................................4-5Clean Heat Exchangers .........................................................5-8Primary Heat Exchangers ................................................5-6Secondary Heat Exchangers................................................6Flush Collector Box and Drainage System..............................6Service Hot Surface Ignitor......................................................6Electrical Controls and Wiring .............................................6-9Troubleshooting ...................................................................9-12Check Heat Tape Operation (If Applicable)..........................12Winterizing..............................................................................13WIRING DIAGRAM ......................................................14 and 20Fixed Capacity ........................................................................14Variable Capacity....................................................................20TROUBLESHOOTING ..........................................................15-19Fixed Capacity...................................................................15-17Variable-Capacity Service Label ......................................18-19SAFETY CONSIDERATIONSInstalling and servicing heating equipment can be hazardous due togas and electrical components. Only trained and qualified person-nel 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, on tags,and on labels attached to or shipped with the unit and other safetyprecautions that may apply.Follow all safety codes, including NFPA 54/ANSI Z223.1-1992,National Fuel Gas Code. In Canada, refer to the current edition ofthe National Standard of Canada CAN/CGA-B-149. Wear safetyglasses and work gloves. Have a fire extinguisher available duringstart-up and adjustment procedures 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 words DANGER, WARNING, and 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 whichcould result in personal injury or death. CAUTION is used toidentify unsafe practices which would result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability,or operation.The ability to properly perform maintenance on this equip-ment requires certain expertise, mechanical skills, tools, andequipment. If you do not possess these, do not attempt toperform any maintenance on this equipment other than thoseprocedures recommended in the User’s Manual. FAILURETO FOLLOW THIS WARNING COULD RESULT INPOSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUSPERSONAL INJURY, OR DEATH.A93040Fig. 1—Multipoise Furnace in Upflow OrientationA93007®amaCANADIAN GAS ASSOCIATIONA P P R O V E DRManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 6a 8a PC 101 Catalog No. 565-904 Printed in U.S.A. Form 58M-2SM Pg 1 6-94 Replaces: 58M-1SM