Carrier 58TMA 3SI Gas Furnace Owners Manual

58TMA Downflow/Horizontal 2-Speed, 2-Stage Induced-Combustion Gas Furnace Installation, Start-Up, and Operating Instructions Series 100, Sizes 065-125 NOTE: Read the entire instruction manual before starting the installation. Index Page ® CANADIAN GAS ASSOCIATION SAFETY CONSIDERATIONS .1 Clearances to Combustibles 1 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE .2 INTRODUCTION 2 Dimensional Drawing 3 LOCATION 3 General 2 Location Relative to Cooling Equipment 3 Hazardous Locations .3 AIR FOR COMBUSTION AND VENTILATION .3-5 Unconfined Space .4 Confined Space 4-5 SUPPLY-AIR PLENUM INSTALLATION (DOWNFLOW) 5 Installation On a Concrete Slab .5 Installation On a Combustible Floor 5-6 HORIZONTAL ATTIC INSTALLATION .6 HORIZONTAL CRAWLSPACE INSTALLATION 6 FILTER ARRANGEMENT .6 GAS PIPING .6-7 ELECTRICAL CONNECTIONS .7-8 115-v Wiring 7-8 24-v Wiring .8 Accessories 8 VENTING 8 START-UP, ADJUSTMENT, AND SAFETY CHECK .9-17 General .9-10 Sequence of Operation 10-13 Adaptive Heating Mode 10-12 Non-Adaptive Heating Mode .12 Cooling Mode 12-13 Continuous Blower Mode .13 Heat Pump Mode 13 Defrost Mode 13 Start-Up Procedures .13-17 Adjustments .14-16 Set Gas Input Rate 14-15 Set Temperature Rise 15-16 Set Thermostat Heat Anticipator 16-17 Check Safety Controls 17 Checklist 17 SAFETY CONSIDERATIONS Installing and servicing heating equipment can be hazardous due to gas and electrical components.

Only trained and qualified personnel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on ama A PP R O VED R heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply. Table 1– Clearances to Combustible Materials (In.) UNIT SIZE 065 AND 085 105 AND 125 DOWNFLOW (IN ALCOVE OR CLOSET) Single-Wall Vent 1* 0 Sides Type B-1 Double-Wall Vent 0 0 Back 0 0 Top 1 1 Single-Wall Vent 6 6 Front (See Notes) Type B-1 Double-Wall Vent 3 3 Single-Wall Vent 6 6 Vent Type B-1 Double-Wall Vent 1 1 HORIZONTAL POSITION (IN ALCOVE, ATTIC, AND CRAWLSPACE) Sides 1 1 Back 0 0 Single-Wall Vent 1 1 Top Type B-1 Double-Wall Vent 1 1 Single-Wall Vent 6 6 Front (See Notes) Type B-1 Double-Wall Vent 3 3 Single-Wall Vent 6 6 Vent Type B-1 Double-Wall Vent 1 1 HORIZONTAL POSITION (IN CLOSET) Sides ** 1 1 Back 3 3 Single-Wall Vent 2 2 Top Type B-1 Double-Wall Vent 2 2 Single-Wall Vent 6 6 Front (See Notes) Type B-1 Double-Wall Vent 3 3 Single-Wall Vent 6 6 Vent Type B-1 Double-Wall Vent 1 1 * For casing widths larger than 14-1/4 in., 0 clearance may be used. 18 in. front clearance required for alcove. Clearance shown is for the outlet end. The inlet end must maintain 6 in. clearance from flue to combustible materials when using single-wall vent. ** Indicates supply or return sides when furnace is in the horizontal position. NOTES: 1. Provide 30-in. front clearance for servicing. An open door in front of the furnace can meet this requirement. 2. A minimum clearance of 3 in. must be provided in front of the furnace for combustion air and proper operation. Follow all safety codes. In the United States, refer to the National Fuel Gas Code (NFGC) NFPA No. 54-1992/ANSI Z223.1-1992. In Canada, refer to the current edition of the National Standard of 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. 535-824 Printed in U.S.A. Form 58TMA-3SI Pg 1 6/94 Replaces: 58TMA-2SI Tab 6a 8a Canada CAN/CGA-B149.1- and .2-M91