Printed in U.S.A. 44001710402 12/9/2014
INSTALLATION INSTRUCTIONS
Single--Stage, PSC Blower Motor
35” Tall, High Efficiency Condensing Gas Furnace
WFAR080B048 (B Series Only)
WFAR (All C Series)
These instructions must be read and understood completely before attempting installation.
Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and NOTE
The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manual that may
apply to the product.
DANGER -- Immediate hazards which will result in
severe personal injury or death.
WARNING -- Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION -- Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE -- Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
!
WARNING
Signal Words in Manuals
The signal word CAUTION is used throughout
this manual in the following manner:
!
CAUTION
Signal Words on Product Labeling
Signal words are used in combination with
colors and/or pictures or product labels.
The signal word WARNING is used throughout
this manual in the following manner:
Safety--alert symbol
When you see this symbol on the unit and in
instructions or manuals, be alert to the
potential for personal injury.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 3..............................
INTRODUCTION 4.........................................
CODES AND STANDARDS 4................................
ELECTROSTATIC DISCHARGE
PRECAUTIONS PROCEDURE 5............................
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS 5...
DIMENSIONAL DRAWING 7................................
LOCATION 8..............................................
GENERAL 8...............................................
AIR FOR COMBUSTION AND VENTILATION 9................
MINIMUM FREE AREA REQUIRED 11........................
MINIMUM SPACE VOLUMES 11..............................
CONDENSATE TRAP 12.....................................
INSTALLATION 20..........................................
FILTER AND RETURN DUCT SIZING 22.......................
AIR DUCTS 28.............................................
GAS PIPING 29.............................................
ELECTRICAL CONNECTIONS 30.............................
J--BOX INSTALLATION 31...................................
VENTING 35...............................................
SPECIAL VENTING REQUIREMENTS
FOR INSTALLATIONS IN CANADA 35........................
VENTING SYSTEMS 36.....................................
INSTALLING THE VENT TERMINATION 42....................
VENTING SYSTEM LENGTH CALCULATIONS 46..............
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 .
INSTALLER: Affix these instructions on or adjacent to the
furnace.
CONSUMER: Retain these instructions for future
reference.
Portions of the text and tables are reprinted from NFPA 54 /ANSI Z223.1--2012, 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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