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From inside (document excerpt):
58MXA Deluxe 4Way Multipoise Fixed-Capacity Direct Vent Condensing Gas Furnace Visit www.carrier.com Installation, Start-Up, and Operating Instructions Sizes 040-140, Series 170 24v Wiring .22 Accessories 22 Direct Venting .22 Removal of Existing Furnaces from Common Vent Systems .22 Combustion-Air and Vent Piping .22 Vent Extension Pipe 27 Concentric Vent and Combustion-Air Termination Kit Installation 29 Multiventing and Vent Terminations 33 Condensate Drain 34 General .34 Application .34 Condensation Drain Protection .35 START-UP, ADJUSTMENTS AND SAFETY CHECK .35 General 35 Prime Condensate Trap With Water 36 Purge Gas Lines 37 Sequence of Operation 37 Heating Mode 37 Cooling Mode 40 Thermidistat Mode 40 Continuous Blower Mode .41 Heat Pump Mode .41 Component Test .41 Adjustments .42 Set Gas Input Rate 42 Set Temperature Rise 48 Adjust Blower Off Delay (Heat Mode) 49 Set Thermostat Heat Anticipator 49 Check Safety Controls 49 Check Primary Limit Control .49 Check Pressure Switch 49 Checklist 50 A93040 NOTE: Read the entire instruction manual before starting the installation.
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This symbol indicates a change since the last issue. TABLE OF CONTENTS SAFETY CONSIDERATIONS .2 INTRODUCTION 4 CODES AND STANDARDS 4 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5 APPLICATIONS 6 General 6 Upflow Applications .6 Downflow Applications 8 Horizontal Left (Supply-Air Discharge) Applications 10 Horizontal Right (Supply-Air Discharge) Applications 11 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 .17 General Requirements .17 Ductwork Acoustical Treatment .17 Supply Air Connections 17 Return Air Connections .17 Filter Arrangement 18 Bottom Closure Panel .19 Gas Piping .19 Electrical Connections 20 115v Wiring .20 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. 53580157 Printed in U.S.A. Form 58MXA-18SI Pg 1 2-05 Replaces: 58MXA-17SI Tab 6a 8a AIRFLOW UPFLOW CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing and gloves when handling parts. Recognize safety information. This is the safety-alert symbol. When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation. The 58MXA Multipoise Condensing Gas-Fired Furnaces are CSA (formerly AGA and CGA) design-certified for natural and propane gases (see furnace rating plate) and for installation in alcoves, attics, basements, closets, utility rooms, crawlspaces, and garages. The furnace is factory-shipped for use with natural gas. A CSA listed gas conversion kit is required to convert furnace for use with propane gas.