926TB
TWO--STAGE, VARIABLE--SPEED ECM
MULTIPOISE CONDENSING GAS FURNACE
Installation, Start--up, Operating and
Service and Maintenance Instructions
NOTE: Read the entire instruction manual before starting the installation.
SECTIONS
SAFETY CONSIDERATIONS 4.........................
INTRODUCTION 5...................................
CODES AND STANDARDS 6...........................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 6...
ACCESSORIES 6.....................................
LOCATION 7........................................
AIR FOR COMBUSTION AND VENTILATION 9..........
CONDENSATE TRAP 12...............................
CONDENSATE DRAIN 13.............................
INSTALLATION 17...................................
AIR DUCTS 30.......................................
GAS PIPING 30......................................
ELECTRICAL CONNECTIONS 32.......................
VENTING 38........................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 60......
SERVICE AND MAINTENANCE PROCEDURES 70........
SEQUENCE OF OPERATION 78........................
PARTS REPLACEMENT GUIDE 84......................
TABLES
Loose Parts Bag Contents 5..............................
Minimum Clearances to Combustible Materials 5.............
Minimum Free Area Required 11.........................
Minimum Space Volumes 11.............................
Filter Size Information 23...............................
Opening Dimensions 23................................
Air Delivery CFM 26...................................
Maximum Capacity of Pipe 31...........................
Electrical Data 35......................................
Combustion--Air Vent Pipe, Fitting & Cement Material.. 40.....
Vent Termination Kit for Direct Vent (2--Pipe) Systems 41......
Hangar Spacing 49.....................................
Maximum Allowable Exposed Vent Lengths Insulation 52......
Maximum Equivalent Vent Length 53......................
Deductions from Maximum Equivalent Vent Length 53........
Altitude Derate Multiplier for U.S.A. 68....................
Blower Off Delay Setup Switch 68........................
Gas Rate 68..........................................
Orifice Size and Manifold Pressure 69.....................
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
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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