Technical Guide
718432-YTG-E-0314
Johnson Controls Unitary Products 55
Typical DEZ036, 060 Cooling Only 208/230-3-60 volt Wiring Diagram
LEGEND
CB CIRCUIT BREAKER
COMPR COMPRESSOR
FCB FAN CONTROL BOARD
FU1-3 FUSE (10, 15, 20 & 25 KW ELEC HEAT)
FU4-6 FUSE (10, 15, 20 & 25 KW ELEC HEAT)
FU4-9 FUSE (20 & 25 KW ELEC HEAT)
HP HIGH PRESSURE SWITCH
HTR1-3 ELECTRIC HEATER (10, 15, 20 & 25 KW)
HTR4-6 ELECTRIC HEATER (20 & 25 KW)
ID_FAN INDOOR FAN MOTOR
K3 RELAY, ELECTRIC HEAT
K7 RELAY LIMIT TRIP 24 VDC COIL
LP LOW PRESSURE SWITCH
LS LIMIT SWITCH
M1 CONTACTOR, COMPRESSOR & OUTDOOR FAN
M2 CONTACTOR, ELECTRIC HEAT
M3 CONTACTOR, ELECTRIC HEAT
OD_FAN OUTDOOR FAN MOTOR
P2/S2 SOCKET/PLUG CONNECTION, 24V
P3/S3 SOCKET/PLUG CONNECTION, LINE VOLTAGE
RC2 RUN CAPACITOR
T1 TRANSFORMER 24V 75VA
TB1 TERMINAL BLOCK, FCB
PRESSURE CONTROLS
DEVICE OPERATING PRESSURE (PSIG)
OPEN +/- CLOSE +/-
HP 625 25 525 25
LP 7 3 22 5
COOLING UNIT WITH ELECTRIC HEAT
ELEMENTARY DIAGRAM
CAUTION - OPEN ALL DISCONNECTS
BEFORE SERVICING THIS UNIT
121/BK
123/BL
126/Y
709/R
711/PR
710/O
BLK
BRN
PRP
105/BL
704/BK
705/BL
708/Y
720/Y
712/BL
718/BK
703/R
717/R
706/PR
713/PR
707/O
719/O
109/BK
108/PR
205/R
128/BK
129/PR
808/BR
809/O
811/O
810/BL
702/PR 721/Y
722/R
203/BR 281/BR
GRN
POWER SUPPLY WITHOUT
ELECTRIC HEAT 208/230-3-60
701/O
723/PR
709/R
703/R
711/PR
706/PR
710/O
707/O
717/R
713/PR
719/O
212/R
205/R
224/R
105/BL
BRN
PRP
710/O
129/PR
711/PR
127/PR
108/PR
125/BK
128/BK
709/R
109/BK
121/BK
BLK
202/Y
807/BL
123/BL
105/BL
126/Y
201/BR
203/BR
281/BR
806/BR
108/PR 109/BK
212/R 201/BR
205/R
702/PR
701/O
129/PR
128/BK
202/Y
279/W
808/BR
204/BR
809/O
203/BR
CONTROL BOX
NOTE: JUMPER 204/BR NOT
PRESENT W/ELECTRIC HEAT
704/BK
705/BL
708/Y
703/R
702/PR
723/PR
706/PR
701/O
721/Y
707/O
718/BK
712/BL
720/Y
717/R
722/R
713/PR
723/PR
719/O
722/R
810/BL
721/Y
811/O
809/O
811/O
808/BR
704/BK
705/BL
708/Y
718/BK
712/BL
720/Y
ELECTRIC HEAT SECTION
803/BK
804/BK
805/BL
804/BK
803/BK
802/BK
121/BK 123/BL
126/Y
BLK
BRN
PRP
127/PR
GRN
125/BK
281/BR
NOTES:
1. ALL FIELD WIRING TO BE ACCOMPLISHED FOLLOWING CITY, LOCAL AND/OR
NATIONAL CODES IN EFFECT AT TIME OF INSTALLATION OF THIS UNIT.
2. CAUTION: LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS
OPERTION.IF ANY OF THE WIRE, AS SUPPLIED WITH THE UNIT MUST BE
REMOVED,IT MUST BE REPLACED WITH TYPE 105 DEGREE C, 600 VOLT
WIRE OREQUIVALENT CLEARLY RENUMBERED FOR IDENTIFICATION. VERIFY
PROPER OPERATION AFTER SERVICING.
3. THREE PHASE MOTORS ARE INHERENTLY PROTECTED UNDER PRIMARY
SINGLE PHASE CONDITIONS.
4. FACTORY WIRED FOR 230V. FOR 208V OPERATION, MOVE WIRE 108/PR TO
208V TAP ON TRANSFORMER T1.
5. SEE UNIT NAMEPLATE FOR MAXIMUM FUSE AND/OR CIRCUIT BREAKER SIZE
AND MINIMUM CIRCUIT AMPACITY.
6. WIRE 204/BR IS REMOVED WHEN ELECTRIC HEAT IS INSTALLED.
FACTORY WIRING AND DEVICES
OPTIONAL WIRING AND DEVICES
FIELD WIRING
POWER SUPPLY
208/230-3-60
USE COPPER
CONDUCTORS ONLY
810/BL
212/R
201/BR
125/BK
127/PR
224/R
226/O
225/BK
LTRIP ECM
2 SPEED
K7 226/0
280/BL
225/BK
224/R
226/O 225/BK
278/PR
(LOW)
(LOW/MED)
(MED)
(MED/HIGH)
(HIGH)
ID_FAN
277/Y
279/W
278/PR
280/BL
8. SELECT SPEED TAP TO OBTAIN DESIRED AIR FLOW.
277/Y
K3
235/Y
A2
B7
233/BL
202/Y
227/BK
LR (SEE NOTE 7)
3
12
807/BL
806/BR
805/BL
ASCT (SEE NOTE 7)
801/BL
ID_FAN
(LOW)
(LOW/MED)
(MED)
(MED/HIGH)
(HIGH)
229/BL
202/Y
7. REMOVED.
M
3
COMPR
L1
L2
L3
M
1
BLK
BRN
PRP
P
OD_FAN
M1
L1 T1
M1
L2 T2
M1
L3 T3
FU1
FU2
FU3
RC2
M2
L1 T1
M2
L2 T2
M2
L3 T3
M3
L1 T1
M3
L2 T2
M3
L3 T3
FU4
FU5
FU6
FU7
FU8
FU9
HTR3
HTR2
HTR1
HTR6
HTR5
HTR4
C
PRI
24V SEC
75 VA
208V
240V
T1
CB
3.2
T
LH
FL
H4
H3
H2
P2
L1
L1
H1
L2
L2
L2
S3
L1
L1
K1
K2
R
Y
G
W2
W1
O
C
TB1 TB1
24V
Y
G
W2
W1
O
C
FU24
FCB
1
2
3
4
1
2
3
4
5
6
P3
S2
LS
K3AB
M2BA
K3
COM NO
M3BA
M1AB
M
230V
C
L
G
N
1
2
3
4
5
1
1
2
3
4
5
P5
1
2
3
4
R
Rc
G
Y1
Y2
W1
W2
TH2
TH2 ANT
TH1
TH1 ANT
TC2
TC1
TC2
ANT
AUTO
ON
FAN SWITCH
TC1
ANT
OFF
HEAT
AUTO
COOL
ROOM THERMOSTAT
FU1
FU4
FU2
FU5
FU3
FU6
FU7
FU8
FU9
CB
RC2
GND
LUG
T1
SEC
240 208 C
24V COM
M1
R
Y
G
W2
W1
O
C
24
VAC
L1 L1 H1 L2 L2
L1
L2
L1
TRANSFAN
H2
H3
LT
FL
LH
T
2 SPEED
LTRIP
FAN CONTROL
K2 K1
M2M3
HTR3
HTR2
HTR1
HTR6
HTR5
HTR4
NO COM
FS
LP
HP
LS
COMPR
L1 L2
L3
OUTDOOR
FAN
BLK
BRN
PRP
M
230V
C
L
G
N
1
2
3
4
5
1
2
3
4
5
1
2
3
4
1
FU1, FU2, FU3, FU4
FU5, FU6, FU7, FU8, FU9
50 AMP 250 VOLT
REPLACE WITH/REMPLACER PAR
BUSSMAN
CHASE SHAWMUT
LITTLEFUSE
FRN-R50
TR50R
FLN-R50
4
6
GND
K7
NO COM
K7AB
NO COM
8
LP
HP
851846-UWD-A-0412
228/BK