Service Instructions
127
WIRING DIAGRAMS
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
AEPF
NO
MARK
INDICATES
NO
HE
A
T KIT INST
A
LLED
AFTER INSTALLING OPTIONAL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.
MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS INSTALLED
BK
BK
BL
IF REPLACEMENT OF THE ORIGINAL W IRES SUPPLIED WITH THIS ASSEMBLY IS NECESSARY, USE 105°C. W IRE. SIZE TO CONFORM TO THE NATIONA L ELECT RIC CODE.
FIELD CONNEC TION
* SEE N OTE 7
LOW VOLTAGE
DS 1
COPPER
(SEE RATING PLATE)
POW ER SUPPLY
CONTROLS SHOW N WITH UTILITIES IN "ON" POSITION AND THERMOSTAT IN "OFF" POSITION.
PN. B1368270 REV. A
J1
BOX
THERMOST
A
TS
W2
HEAT ER
W
CR
J3J2
BR
R
BL
Y/Y2
24 VAC
Y1
R
PU
HUMIDISTAT
HUM
R Y1 G
Y
G
USE COPPER WIRE
EQUIPMENT GROUND
R
BL
W
BR
W1
THERMOSTAT
YCON
CONDE NSER
COM W2OED
W1
OUTDO OR
HEATPUMP
W/W2
R
W
BL
OTC OT 1 COT2OE\ W1
BR
BL
Y
BL
Y
YCO N
TO
CONDENSER
C
PL2
312
BR
BK
PL1
PUW
BL
BR
R
Y
G
Y1C
W2 R
TO
Y/Y2
G
1
R
23
BK
L1 L 2
BK
BK
HTR1
TL
HTR2
R
9
8
7
R
W
BL
PU
TL
BK
5
6
3
4
BK
R
1
2
W
BK
L2L1
BK
R
R
R
BK
R
HTR1
TL
0140A000 00P
EM
2
24 VOLT
O
SEE NOTE 2
COLOR CODE
PRO GRAM JUMPER
7. SEE COMPOSITE WIRING DIAGRAMS IN INSTALLATION INSTRUCTIONS FOR PROPER LOW VOLTAGE
CONN ECTIONS AND DETAILS ON COMPATIBLE THERMOSTATS AND THEIR CONN ECTIONS.
3. FOR OUTDOOR THERMOSTAT OPERATION OF SECOND STAGE HEAT, CUT PJ2 & ADD OT18-60 TO OTC & OT2.
2. FOR TWO STAGE ELECTRIC HEAT APPLICATIONS CUT PJ4. (USE ONLY ON 15 & 20 KW MODELS).
4. FOR SINGLE STAGE COOLING APPLICATIONS CONNECT THERMOSTAT TO Y/Y2 ONLY,
TAPE OR REMOVE Y1 CONNECTION. CONNECT CONDENSING UNIT TO YCON & C.
6. RED WIRES TO BE ON TRANSFORMER TERMINAL 3 FOR 240 VOLTS AND ON TERMINAL 2 FOR 208 VOLTS.
1. FOR HEAT PUMP APPLICATION S REMOVE ORANGE JUMPER WI RE BETWEEN O & Y1.
EVAPORATOR MOTOR
5. WHEN HUMIDSTAT IS PROVIDED CUT PJ6. THER MOSTAT OPENS ON HUM IDITY RISE.
N
OTES:
EM
BK
R
G
PJ2,PJ4,PJ6
SEE NOTE 3
BLACKBK
PL
EM
Y
R
BL
PLUG
RED
YELLOW
BLUE
W WHITE
BL
456789
W
R
R
BL
COM
3
BL
5
TR
240
2
208
1
24V
4
R
4567 89
SEE NOTE 5
HUM
R
PJ6
2
OT
1
OT
PJ2
W2
OT
C
5 PL2
TR
4
PL2
2
1
PL1
2
FACTORY WIRING
W
IRING CODE
FIELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
HIGH VOLTAGE
LOW VOLTAGE
TERMINAL BOARD
VARIABLE SPEE D TR ANSFORMERVSTB TR
COMP
ONENT CODE
PU PURPLE
PINK
ORANGE
BROWNBR
PK
0
GREENG
SEE NOTE 1
NOTE DIODE
ON VSTB
*SEE NOTE 7
W1
W1
6
W2W E
PJ4
5
DIODE
IN4005
Y1
Y
Y2
YCO N
PL2
208/240 VOLTS
3
TO LOW VOLTAGE
TERMINAL BOARD
G
C
NOTE 4
SEE
4
PL2
1PL2
1
PL1
L1
BK
6
8
9
7
2
R
PU
4
5
3
BK
R
1
BK
L2 L1 L2
R
Y
M1
M2
BK
R
Y
R
R1
M4
R
BK
M3
HTR3
TL
HTR2
HTR1
TL
TL
PU
M2
R2
Y
M1
BL
W
BR
BL
R
BK
R
BK
TLHTR1
BK
HTR4
HTR3
HTR2
BK
R
9
7
8
L2L1 L1 L2
2
5
6
3
4
1
R
M1
Y
BK
M2
BL
W
6
BL
R
BK
Y
8
9
7
M6
M5
M3
R1
M4
R
PU
M7
R2
M8
BL
TL
TL
TL
Y
BL
R
BK
R
BL
BR
4
5
3
2
BK
1
OT2
HUM
W1
OT1
W2
PJ2
PJ6
PJ4
SEE NOTE 8
8. DISCARD ORIGINAL "PL1" PLUG CONNECTOR WHEN INSTALLING OPTIONAL HEAT KIT.
RELAY
THERMAL LIMIT
R
HEAT ELEMENT
HTR
TL
ONE (1) ELEMENT ROWS TWO (2) ELEMENT ROWS THREE (3) ELEMENT ROWS FOUR (4) ELEMENT ROWS
O
W2
BR
O
O
BR
R
R
O
O
FL FUSE LINK
FL
M1
M2
FL
FL
M1
M2
M3
M4
FL
FL
FL
FL
FL
FL
FL