Carrier 58MXA 3SI Gas Furnace Owners Manual

58MCA, 58MXA Multipoise Gas-Fired Condensing Furnace Installation, Start-Up, and Operating Instructions For Sizes 040–120 Series 111 CANADIAN GAS ASSOCIATION ® ama AIRFLOW A PP R O VED R A93040 UPFLOW NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. Index Page HORIZONTAL LEFT DOWNFLOW AIRFLOW AIRFLOW HORIZONTAL RIGHT DIMENSIONAL DRAWING 2 SAFETY CONSIDERATIONS .3 Clearances to Combustibles 3 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE 3-4 INTRODUCTION 4 APPLICATIONS 4-11 General 4 Upflow Applications 4-6 Downflow Applications .7-8 Horizontal Left (Supply-Air Discharge) Applications .8-9 Horizontal Right (Supply-Air Discharge) Applications .9-11 LOCATION 11-12 General .11-12 Furnace Location Relative to Cooling Equipment 12 Hazardous Locations .12 INSTALLATION 12-16 Leveling Legs (If Desired) 12-13 Installation On a Concrete Slab .13 Installation On a Combustible Floor (Downflow Applications) 13-14 Installation In Horizontal Applications 14 Filter Arrangement 15 Bottom Closure Panel .15 Gas Piping 15-16 ELECTRICAL CONNECTIONS .16-18 115-v Wiring 16-18 24-v Wiring .18 Accessories 18 DIRECT VENTING .18-27 Removal of Existing Furnaces from Common Vent Systems .18 Combustion-Air and Vent Piping .18-25 Concentric Vent and Combustion-Air Termination Kit Installation 25-27 AIRFLOW Fig.

1–Multipoise Orientations A93041 Multiventing and Vent Termination .27 CONDENSATE DRAIN 27-29 General .27-29 Application 29 Condensate Drain Protection 29 SEQUENCE OF OPERATION 30-31 Heating Mode 30 Cooling Mode .30 Continuous Blower Mode .30 Heat Pump Mode 30 Component Test .30-31 START-UP PROCEDURES 31-35 General 31 Prime Condensate Trap With Water 31 Purge Gas Lines 31 Adjustments .31-35 Set Gas Input Rate 31-34 Set Temperature Rise 34-35 Adjust Blower Off Delay (Heat Mode) .35 Set Thermostat Heat Anticipator 35 CHECK SAFETY CONTROLS 35 Check Primary Limit Control .35 Check Pressure Switch .35 CHECKLIST .35-36 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. 565-830 Printed in U.S.A. Form 58MXA-3SI Pg 1 12-94 Replaces: 58MXA-2SI Tab 6a 8a 26 15/16 ” 26 15/16 ” AIRFLOW 26 1/4 ” 22 5/16 ” 13/16 ” 9/16 ” 28 1/2 ” 26 1/4 ” A 13/16 ” 24 1/2 ” D TYP OUTLET 2-IN. COMBUSTIONAIR CONN /2-IN.