1
915SA
SINGLE STAGE 4--WAY MULTIPOISE
CONDENSING GAS FURNACE
SERIES A AND B
Installation, Start--up, Operating and
Service and Maintenance Instructions
NOTE: Read the entire instruction manual before starting the installation.
SECTIONS
SAFETY CONSIDERATIONS 3.........................
INTRODUCTION 4...................................
CODES AND STANDARDS 4...........................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5...
ACCESSORIES 5.....................................
LOCATION 8........................................
AIR FOR COMBUSTION AND VENTILATION 9..........
CONDENSATE TRAP 12...............................
CONDENSATE DRAIN 16.............................
INSTALLATION 20...................................
AIR DUCTS 29.......................................
GAS PIPING 31......................................
ELECTRICAL CONNECTIONS 32.......................
VENTING 37........................................
START -- UP, ADJUSTMENT, AND SAFETY CHECK 61......
SERVICE AND MAINTENANCE PROCEDURES 73........
SEQUENCE OF OPERATION 81........................
PARTS REPLACEMENT GUIDE 85......................
CERTIFIED
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 current edition of
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 of ficial position of the NFPA or ANSI on the
referenced subject, which is represented only by the standard in its
entirety.
TABLES
LOOSE PARTS BAG 5.................................
MIN. CLEARANCES TO COMBUSTIBLE MATERIALS 5...
MINIMUM F REE AREA REQUIRED 11..................
MINIMUM SPACE VOLUMES 11.......................
FILTER SIZE INFORMATION 23........................
OPENING DIMENSIONS 25............................
AIR DELIVERY CFM 30...............................
MAXIMUM CAPACITY OF P IPE 32.....................
ELECTRICAL DATA 34...............................
VENT TERM. KIT FOR DIRECT VENT (2--PIPE) SYSTEMS 39
Combustion--Air Vent Pipe, Fitting & Cement Material.. 45.....
Maximum Allowable Exposed Vent Lengths Insulation 46......
Maximum Equivalent Vent Length 47......................
Deductions from Maximum Equivalent Vent Length 47........
Blower Off Delay Setup Switch 64........................
Altitude Derate Multiplier for U.S.A. 65....................
Gas Rate 68..........................................
Orifice Size and Manifold Pressure 68.....................
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