915SB
SINGLE--STAGE, 4--WAY MULTIPOISE, 35--IN. (889 MM)
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
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 Volumes
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 Z223.1
E
, 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.
