912SD
SINGLE--STAGE, 35--IN. (889 MM) Tall
4--WAY MULTIPOISE
CONDENSING GAS FURNACE
Installation, Start---up, Operating and
Se rvice and Mainte nance Instr uct io ns
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 7........................................
AIR FOR COMBUSTION AND VENTILATION 9..........
CONDENSATE TRAP 12...............................
CONDENSATE DRAIN 17.............................
INSTALLATION 21...................................
AIR DUCTS 31.......................................
GAS PIPING 33......................................
ELECTRICAL CONNECTIONS 34.......................
VENTING 39........................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 63......
SERVICE AND MAINTENANCE PROCEDURES 73........
SEQUENCE OF OPERATION 81........................
PARTS REPLACEMENT GUIDE 85......................
Portions of the text and tables are reprinted from current edition of
NFPA 54/ANSI Z223.1, 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.
TABLES
Loose Parts Bag 4.....................................
Minimum Clearances to Combustible Materials 8.............
Minimum Free Area Required 11.........................
Minimum Space Volumes 11.............................
Filter Size Information 27...............................
Opening Dimensions 30................................
Air Delivery CFM 32...................................
Maximum Capacity of Pipe 34...........................
Electrical Data 38......................................
Vent T e rmination Kit for Direct Vent (2--Pipe) System 41.......
Hangar Spacing 48.....................................
Combustion--Air Vent Pipe, Fitting & Cement Material.. 50.....
Maximum Allowable Exposed Vent Lengths Insulation 51......
Maximum Equivalent Vent Length 52......................
Deductions from Maximum Equivalent Vent Length 52........
Blower Off Delay Setup Switch 67........................
Altitude Derate Multiplier for U.S.A. 68....................
Gas Rate 70..........................................
Orifice Size and Manifold Pressure 71.....................
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