5126744-UIM-D-1015
18
Johnson Controls Unitary Products
SECTION VIII: TYPICAL WIRING DIAGRAMS
FIGURE 10:
Connection Wiring Diagram - 2 to 3 Ton Models
BLU 29
YEL 19
RED 30
Y
R
G
C
THERMOSTAT
BLK
BRN
RED
GRN 21
BLK 6
POWER SUPPLY
208/230-1-60
USE COPPER
CONDUCTORS
ONLY
PUR 1
YEL 20
WHT 25
GRN
ID_FAN
(LOW)
(LOW/MED)
(MED)
(MED/HIGH)
(HIGH)
PUR 2
BLK 5
GRN 24
YEL 16
RED 8
BRN 15
COM
PRI
24V SEC
40 VA
208V
230V
1
COMPR
C
S
R
230-1-60
L1
T1
T2
L2
M
230V
C
L
G
N
1
2
3
4
5
1
1
2
3
4
START CAP
1
2
5
START RELAY
HI PRESS
FAN
HERM
C
DUAL
CAPACITOR
RED 7
BLU 22
INDOOR BLOWER 60 SECOND OFF
DELAY FOR BOTH HEAT & COOL MODES.
BLK/WHT 11
LOW
VOLTAGE
BOX
CONTACTOR
COIL
SINGLE POLE
CONTACTOR
W1
BLU 27
BRN 28
WHT 26
1
2
3
4
5
6
W2
YEL 18
FEMALE CONNECTOR
FOR 6HK HEATER KIT
(COOLING SPEED)
(HEATING SPEED)
(CONTINUOUS FAN)
BLU 23
LINE VOLTAGE
FIELD INSTALLED POWER
LOW VOLTAGE
FIELD INSTALLED CONTROL
BLK/WHT 12
BRN/WHT 13
RED 9
OD_FAN
1
230-1-60
GRN
5
4
3
2
6
1
BLK
BRN
GRN 10
RED
SECOND STAGE RELAY
OR SEQUENCER
FIRST STAGE RELAY
OR SEQUENCER
24V COMMON
FOR WIRING WITH ELECTRIC HEATERS
SEE SCHEMATIC ON HEATER ACCESSORY.
3A
FUSE
RED 33
WITH RECIPROCATING COMPRESSOR
208/230-1-60
CONNECTION WIRING DIAGRAM
COOLING UNIT WITH OR
WITHOUT ELECTRIC HEAT
CAUTION - OPEN ALL DISCONNECTS
BEFORE SERVICING THIS UNIT
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 MOTOR SPEED INFORMATION FOR EACH APPLICATION TO
OBTAIN APPROX. 400 CFM/TON IN COOLING.
NOTES:
GND
LUG
CRANKCASE
HEATER
GRN
TEMPERATURE
SWITCH
OPTIONAL CRANKCASE HEATER
BLK
BLK
BLK
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 SUPPLY POWER. FOR 208 VOLT,
MOVE BLACK WIRES FROM THE 230 TO THE 208 VOLT TAP ON THE
TRANSFORMER.