Carrier 58MSA 3SI Gas Furnace Owners Manual

58MSA 4-Way Multipoise Fixed-Capacity Condensing Gas Furnace Visit www.carrier.com Installation, Start-Up, and Operating Instructions For Sizes 040–120 Series 110 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since last issue. ® ama CANADIAN GAS ASSOCIATION A PP R O VED R A93040 Index Page DIMENSIONAL DRAWING 2 SAFETY CONSIDERATIONS .3 Clearances to Combustibles 3 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 3-4 INTRODUCTION 4 APPLICATIONS 4-11 General 4 Upflow Applications 4-7 Downflow Applications .7-8 Horizontal Left (Supply-Air Discharge) Applications .8-10 Horizontal Right (Supply-Air Discharge) Applications .10-11 LOCATION 11-13 General .11-12 Furnace Location Relative to Cooling Equipment 13 Hazardous Locations .13 AIR FOR COMBUSTION AND VENTILATION .13-15 General 13 Unconfined Space .13 Confined Space 13-15 INSTALLATION 15-19 Leveling Legs (If Desired) .15 Installation On a Concrete Slab .15 Installation On a Combustible Floor (Downflow Applications) 15-16 Installation In Horizontal Applications 16 Filter Arrangement 16 Bottom Closure Panel .16 Gas Piping 17-19 ELECTRICAL CONNECTIONS .19-20 115-v Wiring 19-20 24-v Wiring .20 Accessories 20 VENTING .20-29 Removal of Existing Furnaces from Common Vent Systems 20-22 Combustion-Air and/or Vent Piping .22-25 Vent Termination .25-28 Multiventing 29 CONDENSATE DRAIN 29-30 General 29 Application .29-30 Condensate Drain Protection 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 SEQUENCE OF OPERATION 30-32 Heating Mode 31 Cooling Mode .31 Continuous Blower Mode .31 Heat Pump Mode 31 Component Test .31-32 START-UP PROCEDURES 32-38 General 32 Prime Condensate Trap With Water 32 Purge Gas Lines 32 Adjustments .32-38 Set Gas Input Rate 32-37 Set Temperature Rise 37 Blower Off Delay (Heat Mode) .37 Set Thermostat Heat Anticipator 37 CHECK SAFETY CONTROLS 38 Check Primary Limit Control .38 Check Pressure Switch .38 CHECKLIST .38-39 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. 535-748 Printed in U.S.A.