Carrier 58MTA 4SI 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 9 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 12 Pressure Switch Tubing .12 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 .21 Accessories 22 Direct Venting .22 Removal of Existing Furnaces from Common Vent Systems 25 Combustion-Air and Vent Piping .25 Concentric Vent and Combustion-Air Termination Kit Installation .29 Multiventing and Vent Terminations 33 Condensate Drain 33 General .33 Application .34 Condensation Drain Protection .34 START-UP ADJUSTMENT AND SAFETY CHECK 34 General 34 Sequence of Operation 34 Two-Stage Heating With Single-Stage Thermostat 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 3 Gas Piping and Gas Pipe Pressure Testing 3 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) 6 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 9 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. 535­80089 Printed in U.S.A. Form 58MTA-4SI Pg 1 12-02 Replaces: 58MTA-3SI Tab 6a 8a (Adaptive Mode) 35 Two-Stage Heating With Two-Stage Thermostat (Non-Adaptive Heating Mode) .38 Cooling Mode 38 Thermidistat Mode 40 Continuous Blower Mode .40 Heat Pump .41 Start-Up Procedures 41 Purge Gas Lines 41 Component Self-Test .41 Prime Condensate Trap With Water .42 Operate Furnace .42 Furnace Restart 42 Adjustments .42 Set Gas Input Rate 42 Set Temperature Rise 47 Adjust Blower Off Delay (Heat Mode) 48 Set Thermostat Heat Anticipator 48 Check Safety Controls 48 Checklist 49 be performed by trained service personnel. When working on 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. Wear safety glasses and work gloves. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing and gloves when handling parts. Failure to follow this caution could result in personal injury. Have a fire extinguisher available during start-up and adjustment procedures and service calls Recognize safety information. This is the safety-alert symbol When you see this symbol on the unit and in instructions or manuals, be alert>