Carrier 58MTA 6SI Gas Furnace Owners Manual

58MTA Deluxe 4­Way Multipoise 2-Stage Direct Vent Condensing Gas Furnace Visit www.carrier.com Installation, Start-up, and Operating Instructions Sizes 060-120 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. Pressure Switch Tubing .9 Condensate Trap Freeze Protection 10 Horizontal Left (Supply-Air Discharge) Applications 10 Condensate Trap Location 10 Condensate Trap Tubing .10 Condensate Trap Field Drain Attachments 11 Pressure Switch Tubing .11 Condensate Trap Freeze Protection 11 Construct a Working Platform 11 Horizontal Right (Supply-Air Discharge) Applications 11 Condensate Trap Location 12 Condensate Trap Tubing .12 Condensate Trap Field Drain Attachment 13 Pressure Switch Tubing .13 Condensate Trap Freeze Protection 13 Construct a Working Platform 13 LOCATION 13 General 13 Furnace Location Relative to Cooling Equipment .14 Hazardous Locations .14 INSTALLATION .14 Leveling Legs (If Desired) .14 Installation in Upflow and Downflow Applications 15 Installation in Horizontal Applications 16 Air Ducts .16 General Requirements .16 Ductwork Acoustical Treatment .17 Supply Air Connections 17 Return Air Connections .18 Filter Arrangement 18 Bottom Closure Panel .18 Gas Piping .18 Electrical Connections 20 115-V Wiring .20 24-V Wiring .22 Accessories 24 Direct Venting .24 Removal of Existing Furnaces from Common Vent Systems 24 Combustion-Air and Vent Piping .25 Concentric Vent and Combustion-Air Termination Kit Installation .29 Multiventing and Vent Terminations 31 Condensate Drain 32 General .32 Application .32 Condensation Drain Protection .33 START-UP ADJUSTMENT AND SAFETY CHECK 33 General 33 Prime Condensate Trap With Water 34 Purge Gas Lines 34 A93040 TABLE OF CONTENTS SAFETY CONSIDERATIONS .2 INTRODUCTION 2 CODES AND STANDARDS 3 Safety .3 General Installation .3 Combustion and Ventilation Air 3 Duct Systems 3 Acoustical Lining and Fibrous Glass Duct 5 Gas Piping and Gas Pipe Pressure Testing 5 Electrical Connections 5 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5 APPLICATIONS 6 General 6 Upflow Applications .6 Condensate Trap Location (Factory-Shipped Orientation) 6 Condensate Trap Tubing (Factory-Shipped Orientation) 7 Condensate Trap Location (Alternate Upflow Orientation) 7 Condensate Trap Tubing (Alternate Upflow Orientation) 8 Condensate Trap Field Drain Attachment 8 Pressure Switch Tubing .8 Upper Collector Box and Inducer Housing (Unused) Drain Connections .8 Condensate Trap Freeze Protection 8 Downflow Applications 8 Condensate Trap Location 8 Condensate Trap Tubing .9 Condensate Trap Field Drain Attachment 9 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. 535­80119 Printed in U.S.A. Form 58MTA-6SI Pg 1 1-04 Replaces: 58MTA-4SI Tab 6a 8a Sequence of Operation 34 Two-Stage Heating With Single-Stage Thermostat (Adaptive Mode) 35 Two-Stage Heating With Two-Stage Thermostat (Non-Adaptive Heating Mode) .38 Cooling Mode 38 Thermidistat Mode 41 Continuous Blower Mode .42 Heat Pump .42 Component Self-Test .42 Operate Furnace .43 Furnace Restart 43 Adjustments .43 Set Gas Input Rate 43 Set Temperature Rise 48 Adjust Blower Off Delay (Heat Mode) 48 Set Thermostat Heat Anticipator 48 Check Safety Controls 48 Checklist 49 heating equipment, observe precautions in literature, on tags, and on labels attached to or shipped with unit and other safety precautions that may apply. These instructions cover the minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residential construction practices. We require these instructions as a minimum for a safe installation.