33
WARNING
H
IgH
Voltage
!
t
o
aVoID
Personal
InjurY
or
DeatH
Due
to
electrIcal
sHock
,
DIsconnect
electrIcal
Power
Before
serVIcIng
or
cHangIng
anY
electrIcal
wIrIng
.
CAUTION
l
aBel
all
wIres
PrIor
to
DIsconnectIon
wHen
serVIcIng
controls
. w
IrIng
errors
can
cause
IMProPer
anD
Dangerous
oPeratIon
. V
erIfY
ProPer
oPeratIon
after
serVIcIng
.
w
IrIng
H
arness
The wiring harness is an integral part of this furnace. Field
alteration to comply with electrical codes should not be
required. Wires are color coded for identification purposes.
Refer to the wiring diagram for wire routings. If any of
the original wire as supplied with the furnace must be
replaced, it must be replaced with wiring material having
a temperature rating of at least 105° C. Any replacement
wiring must be a copper conductor.
115 V
olt
l
Ine
c
onnectIons
Before proceeding with electrical connections, ensure that
the supply voltage, frequency, and phase correspond to
that specified on the unit rating plate. Power supply to
the furnace must be NEC Class 1, and must comply with
all applicable codes. The furnace must be electrically
grounded in accordance with local codes or, in their
absence, with the latest edition of The National Electric
Code, ANSI NFPA 70 and/or The Canadian Electric Code
CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse
or circuit breaker must be sized in accordance with the
maximum overcurrent protection specified on the unit
rating plate. An electrical disconnect must be provided at
the furnace location.
Connect hot, neutral, and ground wires as shown in the
wiring diagram located on the unit’s blower door.
locatIons
.
FI
LT
ER
AIR FLOW
CENTRAL
RETURN
GRILLE
FI
LT
ER
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
P
ossIBle
u
PrIgHt
u
Pflow
f
Igure
44
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SUPPORT
BRACKET
(Field Supplied)
P
ossIBle
u
PrIgHt
c
ounterflow
f
Ilter
l
ocatIons
f
Igure
45
E
lEctrical
c
onnEctions
WARNING
H
IgH
Voltage
!
t
o
aVoID
tHe
rIsk
of
electrIcal
sHock
,
wIrIng
to
tHe
unIt
Must
Be
PolarIZeD
anD
grounDeD
.
