Carrier 58MXA 11SI Gas Furnace Owners Manual

58MXA Deluxe 4­Way Multipoise Fixed-Capacity Direct-Vent Condensing Gas Furnace Visit www.carrier.com Installation, Start-Up and Operating Instructions EFFICIENCY RATING CERTIFIED Ca rr ier Cor pora ti on CERTIFIED SO 900 #A28 A93040 REGISTERED QUALITY SYSTEM NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue.

TABLE OF CONTENTS SAFETY CONSIDERATIONS .1 INTRODUCTION 2 Codes and Standards 4 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5 APPLICATIONS 5 General 5 Upflow Applications .5 Downflow Applications 7 Horizontal Left (Supply-Air Discharge) Applications 8 Horizontal Right (Supply-Air Discharge) Applications 9 LOCATION 11 General 11 Furnace Location Relative to Cooling Equipment 13 Hazardous locations 13 INSTALLATION .13 Leveling Legs (If Desired) .13 Installation in Upflow and Downflow Applications 14 Installation in Horizontal Applications 15 Air Ducts .15 Filter Arrangement 17 Bottom Closure Panel .18 Gas Piping .18 Electrical Connections 19 Direct Venting .20 Condensate Drain 30 Sequence of Operation 32 START-UP PROCEDURES 35 General 35 Prime Condensate Trap With Water 35 Purge Gas Lines 35 HORIZONTAL LEFT AIRFLOW UPFLOW IR REG I ST ® M HORIZONTAL RIGHT I DOWNFLOW AIRFLOW AIRFLOW AIRFLOW A93041 Fig. 1–Multipoise Orientations Adjustments .36 Check Safety Controls 40 Checklist 42 SAFETY CONSIDERATIONS 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 unit and other safety precautions that may apply. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 535-763 Printed in U.S.A. Form 58MXA-11SI Pg 1 10-00 Replaces: 58MXA-11SI Tab 6a 8a Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) NFPA 54-1999/ANSI Z223.1-1999 and the Installation Standards, Warm Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. In Canada, refer to the current edition of the CAN/CGA-B149.1- and .2-M95 National Standard of Canada, Natural Gas and Propane Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have a fire extinguisher available during start-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 or manuals, be alert to the potential for personal injury. 26 15/16 ” 26 1/4 ” 24 1/2 ” 22 5/16 ” 2-IN. COMBUSTIONAIR CONN CONDENSATE DRAIN TRAP LOCATION (DOWNFLOW & HORIZONTAL LEFT) 7 13 Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage.