915SB
SINGLE--STAGE, 4--WAY MULTIPOISE, 35--IN. (889 MM)
CONDENSING GAS FURNACE
Installation, Start---up, Operating and
Se rvice and Maint e nance I ns t ructions
NOTE: Read the entire instruction manual before starting the installation.
SECTIONS
SAFETY CONSIDERATIONS 3.........................
INTRODUCTION 4...................................
CODES AND STANDARDS 5...........................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5...
ACCESSORIES 5.....................................
LOCATION 7........................................
AIR FOR COMBUSTION AND VENTILATION 9..........
CONDENSATE TRAP 12...............................
CONDENSATE DRAIN 13.............................
INSTALLATION 17...................................
AIR DUCTS 27.......................................
GAS PIPING 27......................................
ELECTRICAL CONNECTIONS 29.......................
VENTING 34........................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 56......
SERVICE AND MAINTENANCE PROCEDURES 66........
WINTERIZATION 73..................................
SEQUENCE OF OPERATION 73........................
PARTS REPLACEMENT GUIDE 78......................
TABLES
Loose Parts Bag 4.....................................
Minimum Clearances to Combustible Materials 4.............
Minimum Free Area Required 11.........................
Minimum Space Vo lumes 11.............................
Filter Size Information 22...............................
Opening Dimensions 25................................
Air Delivery CFM 26...................................
Maximum Capacity of Pipe 28...........................
Electrical Data 33......................................
Vent Termination Kit for Direct Vent (2--Pipe) System 36.......
Hangar Spacing 42.....................................
Combustion--Air Vent Pipe, Fitting & Cement Material.. 44.....
Maximum Allowable Exposed Vent Lengths Insulation 45......
Maximum Equivalent Vent Length 46......................
Deductions from Maximum Equivalent Vent Length 46........
Orifice Size and Manifold Pressure 58.....................
Blower Off Delay Setup Switch 63........................
Altitude Derate Multiplier for U.S.A. 64....................
Gas Rate 66..........................................
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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