Service Manual
136
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.
NOTES:
1) RED W IRE TO BE ON TRANSFO RMER TERMINAL 3 FOR 230 VOLTS AND ON
2) TO PLACE AIRHANDLER IN HIGH SPEED, REMOVE RED MOTOR LEAD FROM ELECTRONIC
3) SEE COMPOS ITE WIRING DIAGRAMS IN INSTALLATION INSTRUCTIONS FOR PROPER
4) ASTERISK (*) I NDICATES THAT HEATING ELEMENT , THERMA L LIMIT,
CONTROLS SHOWN WITH UTILITIES IN "ON" POSITION AND THERMOSTAT IN "OFF" POSITION.
COLOR COD
E WIRING CODE
0140 A00543-B
BLOWER TIME DELAY RELAY (EBTDR) COM TERMINAL AND REPLACE WITH BLACK
AND INTERCONNECTING WIRES AND JUMPERS OF HEATER #2
ARE DELETED WITH SINGLE ELEMENT UNITS.
MOTOR LEAD. ALL UNITS WILL BE FACTOR Y CONNECTE D AT LOW SPEED.
TERMINAL 2 FOR 208 VOLTS.
LOW VOLTAGE WIRING CONNECTIONS.
YELLOW
TIME DELAY RELAY
EVAPORATOR MOTOR
ELECTRONIC BLOWER
DISCONNECT SWITCH
EBTDR
DISC
EM
RD RED
BL
YL
BLUE
WH
BK
WHITE
BLACK
COM
PONENTCODE
TL
HTR
TR
R
FC
GREEN
BROWN
PURPLE
BR
GR
PU
RELAY
FAN CAPACITOR
THERMAL LIMIT
TRANSFORMER
HEATER ELEMENT
FACTORY WIRING
HIGH VOLTAGE
LOW VOLTAGE
FIELD WIRING
HIGH VOLTAGE
LOW VOLTAGE
TR
RD
24 VOLT45
2
SEENOTE1
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 ENERG IZED AND A 65 SECOND
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.
5
RD
BL
GR
EM
FC
BR
EVAPORATOR MOTOR LEADS
BR
RD
NOTE
SEE
3
DISC
EQUIPMENT
GROUND
DISC
1
4
3
2
TR
HTR1
BK
BK
TL1
TL1
RD
RD
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
RD
L1
BK
BL
BK
RD
GR
RD
BL
RD
BK
RD
PU
BK
N.E.C. CL
ASS2WIRE
PU COMMON
BK HIGH
RD LOW
L2
T2
HC
HC HEATER CONTACTOR
T1
L1
HC
*
*
*
*
*
HTR2*
TL2*
*
C
L1
L2
T1
T2
BK
BL
BR
WH
RD
RD
BL
RD
PU
BK
BK
BK
RD
RD
BK
RD
BL
RD
RD
RD
RD
WH
BR
AWUF180[316,516,816]BD, AWUF240[316,516,816]BD, AWUF241016BD,
AWUF300[516,816]BE, AWUF301016BE, AWUF360[516,816] BE, AWUF361016BE