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Printed in U.S.A.
440 01 4201 01
Sept. 2011
INSTALLATION INSTRUCTIONS
Modulating, Variable Speed Motor
35” Tall High Efficiency Condensing Gas Furnace
(F/G)9MAC
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
(ESD)
PRECAUTIONS
PROCEDURE
5
. . . . . . . . . .
DIMENSIONS
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION
RELATIVE
TO
COOLING
EQUIPMENT
9
. . . . . . . . . . . . . . . . . . . . . . .
AIR
FOR
COMBUSTION
AND
VENTILATION
9
. . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSATE
TRAP
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPFLOW
INSTALLATION
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DOWNFLOW
INSTALLATION
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HORIZONTAL
INSTALLATION
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FILTER
ARRANGEMENT
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR
DUCTS
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS
PIPING
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL
CONNECTIONS
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J
−
BOX
INSTALLATION
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VENTING
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL
VENTING
REQUIREMENTS
FOR
INSTALLATIONS
IN
CANADA
31
. . . . . . .
DIRECT
VENT
/
2
−
PIPE
SYSTEM
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VENTILATED
COMBUSTION
AIR
SYSTEMS
32
. . . . . . . . . . . . . . . . . . . . . . . . . . .
TERMINATION
REQUIREMENTS
FOR
THE
PROVINCES
OF
ALBERTA
AND
SASKATCHEWAN
37
. . . . . . . . . . . . . . . . . . . . . .
INSTALLING
THE
VENT
TERMINATION
42
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAXIMUM
EQUIVALENT
VENT
LENTH
-
FEET
(METERS)
46
. . . . . . . . . . . . . . . . .
MAXIMUM
ALLOWABLE
EXPOSED
VENT
LENGTHS
IN
UNCONDITIONED
SPACE
47
MAXIMUM
LENGTH
OF
UNINSULATED
AND
INSULATED
VENT
PIPE-FT
(M)
47
. . . .
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
−
2009
©
, 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.