441 01 3400 02
7/12/2019
INSTALLATION INSTRUCTIONS
80% Single Stage, ECM Motor
Category I, Non--Condensing 33--1/3 in. Gas Furnace
N80ESN and N80ESL
(Series A)
SAFETY CONSIDERATIONS
2
. . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CODES AND STANDARDS
4
. . . . . . . . . . . . . . . . . . . . . . . . .
S
AFETY
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G
ENERAL
I
NSTALLATION
4
. . . . . . . . . . . . . . . . . . . . . . . . . . .
C
OMBUSTION AND
V
ENTILATION
A
IR
4
. . . . . . . . . . . . . . . . .
D
UCT
S
YSTEMS
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A
COUSTICAL
L
INING AND
F
IBROUS
G
LASS
D
UCT
5
. . . . . . . .
G
AS
P
IPING AND
G
AS
P
IPE
P
RESSURE
T
ESTING
5
. . . . . . . . . .
E
LECTRICAL
C
ONNECTIONS
5
. . . . . . . . . . . . . . . . . . . . . . . .
V
ENTING
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCATION
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR FOR COMBUSTION AND VENTILATION
7
. . . . . . . . .
O
UTDOOR
C
OMBUSTION
A
IR
M
ETHOD
8
. . . . . . . . . . . . . . . .
C
OMBINATION OF
I
NDOOR AND
O
UTDOOR
A
IR
8
. . . . . . . . . . .
INSTALLATION
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UPFLOW INSTALLATION
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DOWNFLOW INSTALLATION
10
. . . . . . . . . . . . . . . . . . . . . . . . .
HORIZONTAL INSTALLATION
12
. . . . . . . . . . . . . . . . . . . . . . . . .
FURNACE SUPPORT
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR DUCTS
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS PIPING
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONNECTIONS
19
. . . . . . . . . . . . . . . . . . . . . . . . .
115--V WIRING
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J--BOX RELOCATION
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24--V WIRING
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACCESSORIES
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VENTING
23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL VENTING REQUIREMENTS
23
. . . . . . . . . . . . . . . . . . .
MASONRY CHIMNEY REQUIREMENTS
23
. . . . . . . . . . . . . . . . . .
APPLIANCE APPLICATION REQUIREMENTS
24
. . . . . . . . . . . . . . .
ADDITIONAL VENTING REQUIREMENTS
26
. . . . . . . . . . . . . . . . .
SIDEWALL VENTING
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP, ADJUSTMENT, AND SAFETY CHECK
30
. . . . .
START--UP PROCEDURES
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENTS
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECK SAFETY CONTROLS
33
. . . . . . . . . . . . . . . . . . . . . . . . . .
CHECKLIST
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SERVICE AND MAINTENANCE PROCEDURES
38
. . . . . . .
INTRODUCTION
38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL
38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONTROLS AND WIRING
38
. . . . . . . . . . . . . . . . . .
CARE AND MAINTENANCE
39
. . . . . . . . . . . . . . . . . . . . . . . . . .
CLEANING AND/OR REPLACING AIR FILTER
40
. . . . . . . . . . . . . .
BLOWER MOTOR AND WHEEL
40
. . . . . . . . . . . . . . . . . . . . . . . .
CLEANING HEAT EXCHANGER
41
. . . . . . . . . . . . . . . . . . . . . . . .
SEQUENCE OF OPERATION
43
. . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS
44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
45
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS REPLACEMENT INFORMATION GUIDE
47
. . . . . . .
NOTE
: Read the entire instruction manual before starting the
installation.
Portions of the text and tables are reprinted from current edition
of 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.
SAFETY CONSIDERATIONS
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in dangerous
operation, serious injury, death, or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use could cause carbon monoxide
poisoning, explosion, fire, electrical shock, or other
conditions which may cause personal injury or property
damage. Consult a qualified service agency, local gas
supplier, or your distributor or branch for information or
assistance. The qualified service agency must use only
factory--authorized and listed kits or accessories when
modifying this product.
!
WARNING
FURNACE RELIABILITY HAZARD
Improper installation or misapplication of furnace may
require excessive servicing or cause premature component
failure.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate,
air temperature rise, unit leveling, and unit sizing.
CAUTION
!
Improper
installation,
adjustment,
alteration,
service,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause death, personal injury, or