Installation, Start--up, Operating and
Ser vice and M a int e nanc e Instr uc t ions
Series A
820TA/821TA
VARIABLE--SP EED, ECM
INDUCED--COMBUSTION, 2--STAGE
4--WAY MULTIPOISE, NON--CONDENSING GAS FURNACE
SAFETY CONSIDERATIONS 3........................
INTRODUCTION 4..................................
CODES AND STANDARDS 4..........................
Safety 4...........................................
General Installation 4................................
Combustion and Ventilation Air 5......................
Duct Systems 5.....................................
Acoustical Lining and Fibrous Glass Duct 5...............
Gas Piping and Gas Pipe Pressure Testing 5...............
Electrical Connections 5..............................
Venting 5.........................................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE 5.....................................
LOCATION 6.......................................
AIR FOR COMBUSTION AND VENTILATION 7.........
Outdoor Combustion Air Method 7....................
The Standard Method: 8............................
Combination of Indoor and Outdoor Air 8..............
INSTALLATION 10..................................
Upflow Installation 10..............................
Downflow/Horizontal Installation 10..................
Leveling Legs (If Desired) 10........................
Suspended Furnace Support 11.......................
Platform Furnace Support 11.........................
Roll--Out Protection 12.............................
Bottom Return Air Inlet 11..........................
Side Return Air Inlet 11.............................
Filter Arrangement 11..............................
AIR DUCTS 12......................................
Ductwork Acoustical Treatment 12....................
Supply Air Connections 12..........................
Upflow and Horizontal Furnaces 12...................
Downflow Furnaces 13.............................
Return Air Connections 19..........................
Downflow Furnaces 19.............................
Upflow and Horizontal Furnaces 19...................
GAS PIPING 19.....................................
ELECTRICAL CONNECTION 21.......................
ACCESSORIES 23...................................
VENTING 24.......................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 34.....
Start--Up Procedures 35..............................
Adjustments 37.....................................
Wiring Diagram 40..................................
Check Safety Controls 47.............................
Checklist 44.......................................
SERVICE AND MAINTENANCE PROCEDURES 44.......
General 45........................................
Care and Maintenance 46.............................
Sequence of Operation 49.............................
Troubleshooting 53..................................
PARTS REPLACEMENT INFORMATION GUIDE 55.......
NOTE: Read the entire instruction manual before starting the
installation.
Portions of the text and tables are reprinted from NFPA 54/ANSI
Z223.1E, with permission of National Fire Protection
Association, Quincy, MA 02269 and American Gas Association,
Washington DC 20001. This reprinted material is not the
complete and official position of the NFPA or ANSI on the
referenced subject, which is represented only by the standard in
its entirety.
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