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Printed in U.S.A.
440 01 4103 03
12/5/2013
INSTALLATION INSTRUCTIONS
Single
−
Stage, PSC Blower Motor
35” Tall, High Efficiency Condensing Gas Furnace
N9MSE (A 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
DIMENSIONS
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION RELATIVE TO COOLING EQUIPMENT
9
. . . . . . . . . . .
AIR FOR COMBUSTION AND VENTILATION
9
. . . . . . . . . . . . . . . .
CONDENSATE TRAP
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPFLOW INSTALLATION
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DOWNFLOW INSTALLATION
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORIZONTAL INSTALLATION
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FILTER ARRANGEMENT
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR DUCTS
28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS PIPING
28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONNECTIONS
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J
−
BOX INSTALLATION
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VENTING
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL VENTING REQUIREMENTS
FOR INSTALLATIONS IN CANADA
35
. . . . . . . . . . . . . . . . . . . . . . . .
DIRECT VENT / 2
−
PIPE SYSTEM
39
. . . . . . . . . . . . . . . . . . . . . . . . . .
VENTILATED COMBUSTION AIR
39
. . . . . . . . . . . . . . . . . . . . . . . . . .
TERMINATION REQUIREMENTS FOR
THE PROVINCES OF ALBERTA AND SASKATCHEWAN
39
. . . . .
INSTALLING THE VENT TERMINATION
48
. . . . . . . . . . . . . . . . . . . .
MAXIMUM EQUIVALENT VENT LENGTH
53
. . . . . . . . . . . . . . . . . . .
MAXIMUM ALLOWABLE EXPOSED VENT LENGTH
56
. . . . . . . . .
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.