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From inside (document excerpt):
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 6-12 General 6 Upflow Applications 6-7 Downflow Applications .7-9 Horizontal Left (Supply-Air Discharge) Applications .9-10 Horizontal Right (Supply-Air Discharge) Applications .10-12 LOCATION 12-13 General 12 Furnace Location Relative to Cooling Equipment 13 Hazardous Locations .13 INSTALLATION 13-14 Leveling Legs (If Desired) 13-14 Installation In Upflow and Downflow Applications .14 Installation In Horizontal Applications 14 AIR DUCTS 14-19 General 14 Ductwork Acoustical Treatment .16 Supply Air Connections 16-17 Return Air Connections 17 Filter Arrangement 17 Bottom Closure Panel .17 Gas Piping 17-19 ELECTRICAL CONNECTIONS .19-20 115-v Wiring 19-20 24-v Wiring .20 Accessories 20 DIRECT VENTING .20-30 Removal of Existing Furnaces from Common Vent Systems .23 Combustion-Air and Vent Piping .23-29 Concentric Vent and Combustion-Air Termination Kit Installation 29-30 Multiventing and Vent Termination .30 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 30-34 General .30-32 Application 32 Condensate Drain Protection .32-34 SEQUENCE OF OPERATION 34-36 Heating Mode 34 Cooling Mode 34-35 Continuous Blower Mode .35 Heat Pump Mode 35 Component Test .35-36 START-UP PROCEDURES 36-44 General 36 Prime Condensate Trap With Water 36 Purge Gas Lines 36 Adjustments .36-44 Set Gas Input Rate 36-44 Set Temperature Rise 44 Adjust Blower Off Delay (Heat Mode) .44 Set Thermostat Heat Anticipator 44 CHECK SAFETY CONTROLS 44 Check Primary Limit Control .