5538117-UIM-B-0319
16
Johnson Controls Ducted Systems
FIGURE 11:
Ladder Wiring Diagram
208/230-3-60
THREE PHASE
COOLING UNIT WITH OR WITHOUT
ELECTRIC HEAT
CAUTION - OPEN ALL DISCONNECTS
BEFORE SERVICING THIS UNIT
1. ALL FIELD WIRING TO BE ACCOMPLISHED FOLLOWING CITY, LOCAL AND/OR
NATIONAL CODES IN EFFECT AT THE TIME OF INSTALLATION OF THE UNIT.
2. CAUTION : LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS
OPERATION. IF ANY OF THE WIRING, AS SUPPLIED WITH THE UNIT, MUST
BE REMOVED, IT MUST BE REPLACED WITH TYPE 105 C. 600 VOLT
WIRE OR EQUIVALENT CLEARLY RENUMBERED FOR IDENTIFICATION.
VERIFY PROPER OPERATION AFTER SERVICING.
3. FACTORY WIRED FOR 230 VOLT THREE-PHASE SUPPLY POWER. FOR 208 VOLT,
MOVE BLACK WIRES FROM THE 230 TO THE 208 VOLT TAP ON THE TRANSFORMER.
NOTES:
COM
PRI
24V SEC
75 VA
208V
230V
L2
COMPRES
L3
L1
L2
BLOWER
MOTOR
L
N
G
HI PRESSURE
SWITCH
CONTACTOR
COIL
CAPACITOR
T1
L1
L2
T2
LADDER WIRING DIAGRAM
BLK
YEL
RED
OD FAN
MOTOR
R
C
S
BLK/WHT
RED
BRN/WHT
PUR
BLK
PUR
BLU
RED
BLK
XFMR
BLU
3A FUSE
YEL
YEL
BLOWER
MOTOR
5
3
C
1
4
2
GRN
WHT
BRN
WHT
BLU
BLU
W1
R
G
C
THERMOSTAT
Y
W2
BLU
L1
CRANKCASE
HEATER
GRN
BLK
BLK
TEMPERATURE
SWITCH
BLK
OPTIONAL CRANKCASE HEATER WIRING
FEMALE CONNECTOR
FOR 6HK HEATER KIT
FOR WIRING WITH ELECTRIC
HEATERS SEE SCHEMATIC ON
HEATER ACCESSORY.
1
2
3
4
5
6
1
2
3
4
5
6
L3
T3
L3
BLU
WIRING DIAGRAM FOR
HEATER KIT:
6HK06501825
SEE HEATER WIRING DIAGRAM FOR ALTERNATE
HEATER ACCESSORY KITS.
OPTIONAL ELECTRIC
HEATER ACCESSORY
L1
L2
L3
HE6
HE5
HE4
HE3
HE2
FL
FL
FL
FL
FL
L1
L2
L3
GND
RLY 4
RLY 5
RLY 6
RLY 1
RLY 2
RLY 3
HE1
FL
LS
LS
WHT
BLU
PUR
RED/WHT
BLK
BRN
BLU
BLU
BLU
BLU
BLU
BLU
YEL
YEL
YEL
YEL
BLK
BLK
BLK
BLK
YEL
BLK
BLK
BLU
YEL
BLK
YEL
BLU
BLU
YEL
BLK
BLU
WHT
WHT
WHT
WHT
BLU
BLU
BLU
BLU
THIS UNIT IS WIRED
FOR THREE-PHASE POWER.
DO NOT CONNECT TO
A SINGLE-PHASE SUPPLY.
NOTICE
SEE NOTE 6
GND
LOW
VOLTAGE
BOX
LINE VOLTAGE
FIELD INSTALLED POWER
LOW VOLTAGE
FIELD INSTALLED CONTROL
4. MOTORS ARE INHERENTLY PROTECTED.
5. SEE UNIT NAMEPLATE FOR MAXIMUM FUSE AND/OR CIRCUIT BREAKER SIZE
AND MINIMUM CIRCUIT AMPACITY.
6. BLOWER MOTOR SPEED CONNECTIONS SHOWN ARE TYPICAL, BUT
MAY VARY BY MODEL AND APPLICATION. SEE INSTALLATION MANUAL
FOR PROPER SPEED TAP INFORMATION FOR EACH APPLICATION TO OBTAIN
APPROX. 400 CFM/TON IN COOLING.
7. IF ELECTRIC HEAT IS INSTALLED, SELECT A HEATING BLOWER SPEED THAT
DELIVERS SUFFICIENT AIRFLOW TO SUIT THE WATTAGE OF ELECTRIC HEAT
INSTALLED. SEE TABLE IN INSTALLATION MANUAL.
