Grandaire WFAR Installation Instructions Manual

INSTALLATION INSTRUCTIONS
35" Tall, High Efficiency Condensing Gas Furnace
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and NOTE
The signal words
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.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CODES AND STANDARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTROSTATIC DISCHARGE
PRECAUTIONS PROCEDURE
MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS
DIMENSIONAL DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR FOR COMBUSTION AND VENTILATION
MINIMUM FREE AREA REQUIRED
MINIMUM SPACE VOLUMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSATE TRAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FILTER AND RETURN DUCT SIZING
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONNECTIONS
J--BOX INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL VENTING REQUIREMENTS
FOR INSTALLATIONS IN CANADA
VENTING SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLING THE VENT TERMINATION
VENTING SYSTEM LENGTH CALCULATIONS
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.
Printed in U.S.A.
Single- -Stage, PSC Blower Motor
WFAR080B048 (B Series Only)
WFAR (All C Series)
Safety Labeling and Signal Words
DANGER, WARNING,
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . .
Signal Words in Manuals
The signal word WARNING is used throughout
this manual in the following manner:
WARNING
!
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.
Safety--alert symbol
When you see this symbol on the unit and in
instructions or manuals, be alert to the
potential for personal injury.
3
4
4
5
5
7
8
8
9
11
11
12
20
22
INSTALLER: Affix these instructions on or adjacent to the
28
29 furnace.
30
CONSUMER: Retain
31
reference.
35
35
36
42
46
440 01 7104 02
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 .
these instructions
12/9/2014
for future