Carrier 58MCA 15SI Gas Furnace Owners Manual

58MCA 4-Way Multipoise Fixed-Capacity Direct-Vent Condensing Gas Furnace Visit www.carrier.com Installation, Start-Up, and Operating Instructions For Sizes 040-140, Series 180 ama A93040 CERTIFIED NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. Index Page DIMENSIONAL DRAWING 2 SAFETY CONSIDERATIONS .3 Clearances to Combustibles 4 CODES AND STANDARDS 4 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5 INTRODUCTION 5 APPLICATIONS 6 General 6 Upflow Applications .6 Downflow Applications 7 Horizontal Left (Supply-Air Discharge) Applications 9 Horizontal Right (Supply-Air Discharge) Applications 10 LOCATION 12 General 12 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 14 Air Ducts .14 General .14 Ductwork Acoustical Treatment .16 Supply Air Connections 16 Return Air Connections .17 Filter Arrangement 17 Bottom Closure Panel 17 Gas Piping 17 Electrical Connections 19 115-v Wiring 19 24-v Wiring 20 Accessories 20 Direct Venting .20 Removal of Existing Furnaces from Common Vent Systems 23 Combustion-Air and Vent Piping .23 Concentric Vent and Combustion-Air Termination Kit Installation 29 Multiventing and Vent Termination .34 As an ENERGY STAR® Partner, Carrier Corporation has determined that this product meets the ENERGY STAR® guidelines for energy efficiency.

REGISTERED QUALITY SYSTEM AIRFLOW UPFLOW HORIZONTAL LEFT DOWNFLOW AIRFLOW HORIZONTAL RIGHT AIRFLOW AIRFLOW Fig. 1–Multipoise Orientations A93041 Condensate Drain 34 General .34 Application .34 Condensate Drain Protection .34 START-UP, ADJUSTMENTS AND SAFETY CHECK 34 General .34 Prime Condensate Trap With Water .35 Purge Gas Lines 35 Sequence of Operation 35 Heating Mode .35 Cooling Mode .36 Continuous Blower Mode 36 Heat Pump Mode .36 Component Test .36 Adjustments .37 Set Gas Input Rate .37 Set Temperature Rise .44 Adjust Blower Off Delay (Heat Mode) 44 Set Thermostat Heat Anticipator .45 Check Safety Controls .45 Check Primary Limit Control 45 Check Pressure Switch .44 CHECKLIST 44 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.