From inside (document excerpt):
58MSA 4-Way Multipoise Fixed-Capacity Condensing Gas Furnace Visit www.carrier.com Installation, Start-Up, and Operating Instructions For Sizes 040–120 Series 150 ama CERTIFIED ISO 9001:2000 A93040 NOTE: Read the entire instruction manual before starting the installation. This symbol indicates a change since the last issue. Index Page DIMENSIONAL DRAWING 3 SAFETY CONSIDERATIONS .2 Clearances to Combustibles 4 CODES AND STANDARDS 4 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5 INTRODUCTION 5 APPLICATIONS 5 General 5 Upflow Applications .5 Downflow Applications 8 Horizontal Left (Supply-Air Discharge) Applications 9 Horizontal Right (Supply-Air Discharge) Applications 11 LOCATION 13 General 13 Furnace Location Relative to Cooling Equipment 13 Hazardous Locations .14 AIR FOR COMBUSTION AND VENTILATION 14 INSTALLATION .17 Leveling Legs (If Desired) .17 Installation in Upflow and Downflow Applications 17 Installation In Horizontal Applications 19 Air Ducts .20 General .20 Ductwork Acoustical Treatment .20 Supply Air Connections 20 Return Air Connections .20 Filter Arrangement 20 Bottom Closure Panel .21 Gas Piping .21 Electrical Connections 22 115-v Wiring 22 24-v Wiring 24 Accessories 24 Venting 24 Removal of Existing Furnaces from Common Vent Systems 24 Combustion-Air and Vent Piping .28 Vent Termination .35 Multiventing .35 As an ENERGY STARĀ® Partner, Carrier Corporation has determined that this product meets the ENERGY STARĀ® guidelines for energy efficiency.
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REGISTERED AIRFLOW UPFLOW HORIZONTAL LEFT DOWNFLOW AIRFLOW HORIZONTAL RIGHT AIRFLOW AIRFLOW Fig. 1–Multipoise Orientations A93041 Condensate Drain 36 General .36 Application .36 Condensate Drain Protection .36 START-UP, ADJUSTMENTS AND SAFETY CHECK .37 General 37 Prime Condensate Trap With Water 37 Purge Gas Lines 38 Sequence of Operation 38 Heating Mode 38 Cooling Mode 39 Continuous Blower Mode .39 Heat Pump Mode .39 Component Test .39 Adjustments .40 Set Gas Input Rate 40 Set Temperature Rise 44 Blower Off Delay (Heat Mode) 45 Set Thermostat Heat Anticipator 45 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. 535-80138 Printed in U.S.A. Form 58MSA-10SI Pg 1 8-04 Replaces: 58MSA-9SI Tab 6a 8a Check Safety Controls 45 Check Primary Limit Control .45 Check Pressure Switch 45 CHECKLIST .46 SAFETY CONSIDERATIONS 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 58MSA 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 (formerly AGA and CGA) listed gas conversion kit is required to convert furnace for use with propane gas. See Fig. 3 for required clearances to combustibles. Maintain a 1-in. clearance from combustible materials to supply air ductwork for a distance of 36 inches horizontally from the furnace. See NFPA 90B or local code for further requirements. These furnaces SHALL NOT be installed directly on carpeting, tile, or any other combustible material other than wood flooring. In downflow installations, factory accessory floor base MUST be used when installed on combustible materials and wood flooring. Special base is not required when this furnace is installed on manufacturer’s Coil Assembly Part No.