Service Manual
140
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.
AWUF18[03/05/08]16BB AWUF24[03/05/08/10]16BB AWUF30[05/08/10]16BC
AWUF36[05/08/10]16BC
NOTES:
1) RED WIRE TO BE ON TRANSFORMER TERMINAL 3 FOR 23 0 VOLTS AND ON
2) TO PLACE AIRHANDLER IN HIGH SPEED, REMOVE RED MOTOR LEAD FROM ELECTRONIC
3) SEE COMPOSIT E WIRING DIAGRAMS IN INSTALLATION INSTRUCT IONS FOR PROPE R
4) ASTERISK (*) INDICATES TH AT HEATING ELEMENT , THERMAL LI MIT,
CONTROLS SHOWN WITH UTILITIESIN "ON" POSITION AND THERMOSTAT IN "OFF" POSITION.
COLOR CO
DE WIRING CODE
0140A00282-A
BLOWER TIME DELAY RELAY (EBTDR) COM TERMINAL AND REPLACE WITH BLACK
RELAY (SEQUENCER) AND INTERCONNEC TING WIRES AND JUMPERS OF HEAT ER #2
ARE DELETED WITH SINGLE ELEMENT UNITS.
MOTOR LE AD. ALL UNIT S WILL BE F A CTORY CONNECTED A T LOW SPEED.
TERMINAL 2 FOR 208 VOLTS.
LOW VOLTAGE W IRING CONNECTI ONS.
YELLOW
TIME DELAY RELAY
EVAPORATOR MOTOR
ELECTRONIC BLOWER
DISCONNECT SWITCH
EBTDR
DISC
EM
RD RED
BL
YL
BLUE
WH
BK
WHITE
BLACK
COMPO
NENT CODE
TL
HTR
TR
R
FC
GREEN
BROWN
PURPLE
BR
GR
PU
NOTE 3
RELAY
FAN CAPACITOR
THERMAL LIMIT
TRANSFORMER
HEATER ELEMEN T
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
FIELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
TR
RD
24 VOLT45
2
SEE NOTE 1
1
3
LO
FC
*
EM
HI
TL1
TL1
HTR 1
HTR 2
COM
BL BR
WH
R1
GR
NONC
TL2
TL2
208/230 VOLTS
DISC
* *
DISC
EBTDR
OFF DELAY WHEN "G" IS DE-ENERGIZED .
5) EBTDR HAS A 7 SECOND ON DELAY WHEN "G" IS ENERGIZED AND A 65 SECON D
R
EBTDR
G
C
EBTDR
M2
IF REPLACEMENT OF THE ORIGINAL WIRES SUPPLIED WITH THIS ASSEMBLY IS NECESSARY, USE 105°C.
WIRE SIZE TO CONFORM TO THE NATIONAL ELECTRIC CODE.
C
L2
L1
T2
T1
4
RD
WH
BR
RD
BL
GR
EM
FC
BR
EVAPORATOR MOTOR LEADS
BR
RD
RD
NOTE
SEE
3
DISC
EQUIPMENT
GROUND
DISC
3
5
BK
12
TR
RD
HTR2*
HTR1
*
BK
BK
TL1
TL1
RD
*
RD
TL2*
TL2
EBTDR
SEE
NOTE 5
COPPER
POWER SUPPLY
(SEE RATING PLATE)
USE MIN. 75°C FIELD WIRE
N.E.C. CLASS 2 WIRE
COM
R
NC
NO
UP
C
K1
SPEED
K1
M1
XFMR-C
EBTDR
XFMR-R
G
M2
L2
L1
BL
BK
RD
RD
RD
BK
BL
WH
BR
RD
RD
BK
BK
BL
GR
RD
RD
RD
RD
RD
BK
RD
PU
BK
RD
C CONTACTOR
N
.E.C. CLASS 2 WIRE
PU COMMON
BK HIGH
RD LOW
RD
BK
2T2L
HC
HC HEATER CONTACTOR