WIRINGS DIAGRAMS (CONT’D)
24
VAC
CRG
Y/Y2
OW
1
W
2
Y
1
24VAC
COMMON OUT
FUSED 24VAC
POWER OUT
CALL FOR
FAN
CALL FOR
COOL.
REVERSING
VALVE
CALL FOR
HEAT 1
X13 COM
X13
HE
AT
X
13 COOL
XFMR
L1
L1
L2
COM
L2
L2
CO
M
P3-1 P3-2 P3-3
P3-4
P3-5
P3-6 P3-7
BOARD POWER
SUPPLY
POWER
HEAT 1
HEAT 2
HEAT 3
HEAT 4
VOUT
GND
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
F1
5 A
E
HTL
E
HTL
HEAT 1
E
HTL
G
L2
L1
MRHTL
HEAT 2
HEAT 3
KC2
KC1
KC3
COM
NO
COM
NO
COM
NO
BLK (HI)
BLU (MED-HI)
RED (LO)
Cla
ss
2 Tranformer
Prim.: 240V 60Hz
Second.: 24V 60Hz 40VA
YEL
YEL
RED
BLK
RED
BLK
BLK
BLK
RED
RED
BLK
BLK
BLK
RED
BLK
WHT
HEAT 3
HEAT 2
HEAT 1
PNK
BRN
GRY
PNK
BRN
GRY
WHT
YEL
YEL
WHT
WHT
WHT
RED
GRN
N
RED
GRN
YEL (MED
-LO
)
K7
4
6
2
5
1
3
PNK
BLU
BLU
WHT
ORG
WHT
P3
P2
P1
RED
BLK
PNK
CS
T
5
4
3
2
1
N
G
L
C
M
BLK
BLK
RED
RED
ORG
BLK
C=COM
L=LINE
G=GROUND
N=NEUTRAL
1=LO
2=MED HI
3=MED HI
4=HI
5=HI
M
24 Vdc
24 Vdc
24 Vdc
CALL FOR
COOL 1
CALL FOR
HEAT 2
24 Vdc
MRHTL
WHT
WHT
Open: 93.3°C (200°F)
24Vac
coil
24V~
KC1B
BLK
GRY
NC
RED
F
F + H
CONTINUOUS
SPEED
PPL
PPL
PPL
GRY
GRY
SEASON SELECT
HEAT INDICATOR
VS
LO
MED-LO
RED
YEL
YEL
RED
VENTILATION SPEED
OFR18000/20000
E
HTL
HEAT 4
RED
BLK
KC4
COM
NO
HEAT 4
WHT
24 Vdc
PPL
PPL
BLK
PPL
BLK
BLK
SS
TB2
NC
Line voltage wiring:
UL AWM 1015/1230, 600V, 105°C,
VW-1,12AWG;
CSA TEW 600V, 105°C, FT1, 12AWG.
Low voltage wiring: same ratings as
high voltage except 18AWG.
Critical Characteri
s
tic
1. If any of the original wire, as
supplied, must be replaced, use
the same equivalent wire. Wiring
must comply with applicable codes,
ordinances and regulations.
2. Field wiring must comply with
applicable codes, ordinances and
regulations. Use only Class 1 wiring
inside furnace compartments.
For the u
s
e of a two-
s
tage heat
thermo
s
tat or an outdoor thermo
s
tat,
connect
b
etween W1and W2. Make
s
ure that the
Sea
s
on Select
s
witch
i
s
s
et to the Mild Po
s
ition.
HI
BLACK
MED-HIGH
BLUE
MED-LOW
YELLOW
LOW
RED
FAN
MOTOR SPEED
COLOR
WIRING COLOR CODE
BLK BLACK
BLU BLUE
BRN BROWN
GRN GREEN
GRY GREY
ORG ORANGE
PNK PINK
PPL PURPLE
RED RED
WHT WHITE
YEL YELLOW
LEGEND
F1 Fu
s
e
E Heating
Element
KC Heating
Element
Relay
K Fan
Relay
HTL Auto-Re
s
et
Thermal
Protector
MRHTL Manual
Re
s
et
Thermal
Protector
M Fan
Motor
TB2 Terminal
Block
T Tran
s
former Cla
ss
2
HEAT Heat
L1, L2
240V Line Supply
N Neutral
8
WARNING
Risk of electrical shock. Disconnect power before installation, servicing, maintenance or field wiring. Replace all panels before
operating. Failure to do so can result in electrical shock causing severe injuries or death.
!
