5285473-UIM-E-1217
22
Johnson Controls Unitary Products
SECTION VIII: TYPICAL WIRING DIAGRAMS
FIGURE 13:
Connection Wiring Diagram
FACTORY CONTROL BOARD SETTINGS:
COMBUSTION BLWR POST PURGE: 15 SEC.
INDOOR BLWR HEAT ON DELAY: 30 SEC.
INDOOR BLWR COOL OFF DELAY: 60 SEC.
INDOOR BLWR HEAT OFF DELAY: FIELD SELECT
2 STAGE COOLING UNIT WITH GAS HEAT
208/230-3-60
CONNECTION WIRING DIAGRAM
LIMIT
SWITCH
ROLLOUT
SWITCH
HIGH PRESSURE
SWITCH
LOSS OF CHARGE
SWITCH
PRESSURE
SWITCH
2 STAGE
GAS VALVE
IGNITOR
FLAME
SENSOR
CAP
CONTACTOR
POWER SUPPLY
208/230-3-60
USE COPPER
CONDUCTORS
ONLY
BLK
BLK 1
BLK
BLK/WHT 57
BLK 56
BLK
CRANKCASE
HEATER
TEMPERATURE
SWITCH
GRN 31
BLU 28
BLU
PUR/WHT 6
BLU/WHT 7
RED/WHT 55
BLU
BLU 30
BLK
BLU
YEL
GRN 19
GRY 18
YEL 38
WHT 42
BLK 41
ORG 39
ORG 40
RED
RED 36
BLK 44
RED 43
BLK 34
PUR 35
BLK 2
PUR 3
BLK/WHT 10
PUR 4
GRN 8
RED11
RED 12
BRN/WHT 9
YEL 14
YEL 13
BLU
BLU
YEL/BLU 15
BLU 26
RED/BLK 37
RED 16
RED/GRN 17
RED 33
GRN 32
BLU 29
YEL/BLK 23
YEL/BLK 22
YEL/BLK 24
BLU 27
RED 25
WHT 21
WHT/BLK 20
LOW VOLTAGE
BOX
THERMOSTAT
CAUTION
!
OPEN ALL DISCONNECTS
BEFORE SERVICING THIS UNIT.
GRN 5
230V
24V SEC
75VA
COM
208V
F
C
M
HI
C
INDUCER
MOTOR
1
1
3
2
WHT
RED
BLK
GRN
GND
T1
L1
W1
R
C
G
DHUM
Y1
Y2
W2
ID BLWR
MOTOR
1
L1
COMPR.
L2
P
3
L3
OD FAN
MOTOR
1
1
2
3
4
5
6
BLK
BRN
GRN
RED
2 STAGE DSI
CONTROL BOARD
C
R
O
Y1
Y2
W1
C
R
O
Y1
W1
W2
G
DHUM
P4
P3
1
2
3
4
5
6
7
8
9
10
11
12
P1
P2
T1
P5
P7
P8
1
1
HUM
PRESENT
NO HUM
180
120
90
60
AC
HP
BLOWER
DELAY
3A
1
2
3
4
LAST
ERROR
STATUS
FIELD INSTALLED CONTROL
FIELD INSTALLED POWER
24V LOW VOLTAGE
208/230V LINE VOLTAGE
6 5 4
3 2 1
PWM
ENABLE
PWM COM
P6
1
T2
L2
T3
L3
DSI FAULT CODES
OPERATIONAL FAULT CODES
NORMAL OPERATION
GREEN HEARTBEAT
Normal Operation / Standby mode
AMBER HEARTBEAT
Call for furnace heat active
RAPID GREEN FLASHES
Control in Factory Test mode
4 AMBER FLASHES
No G from thermostat with Y call
NONE
Power off or open fuse
RAPID AMBER FLASHES
Low flame sense current
1 RED FLASH
Flame sensor with gas off
STEADY ON (ANY COLOR)
Control failure
2 RED FLASHES
Check pressure switch wiring
3 RED FLASHES
Check pressure switch, wiring, draft inducer
4 RED FLASHES
Airflow problem
5 RED FLASHES
Flame rollout
6 RED FLASHES
Repeated pressure switch cycles
7 RED FLASHES
Failed to light burners
8 RED FLASHES
Loss of flame during call for heat
9 RED FLASHES
Incorrect polarity
10 RED FLASHES
Gas valve shorted “ON”
11 RED FLASHES
Check blower motor/wiring
12 RED FLASHES
Missing model ID plug or improperly
connected
NOTES
1. ALL FIELD WIRING TO BE ACCOMPLISHED FOLLOWING
CITY, LOCAL, AND/OR NATIONAL CODES IN EFFECT AT THE
TIME OF INSTALLATION OF 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 UNIT MUST BE REMOVED, IT MUST BE REPLACED WITH TYPE
105 C 600 VOLT WIRE OR EQUIVALENT AND CLEARLY RENUMBERED
FOR IDENTIFICATION. VERIFY PROPER OPERATION AFTER SERVICING.
3. FACTORY WIRED FOR 230 VOLT THREE PHASE SUPPLY POWER.
FOR 208 VOLT THREE PHASE SUPPLY POWER, MOVE BLACK
TRANSFORMER
WIRES FROM THE 230 VOLT TAP TO THE 208 VOLT TAP.
4. MOTORS ARE INHERENTLY PROTECTED.
5. SEE UNIT NAMEPLATE FOR MAXIMUM FUSE AND/OR CIRCUIT
BREAKER SIZE AND MINIMUM CIRCUIT AMPACITY.
6. SELECT INDOOR BLOWER SPEED TO REMAIN WITHIN THE
TEMPERATURE RISE RANGE ON THE NAMEPLATE IN HEATING AND
TO OBTAIN APPROXIMATELY 400 CFM/TON IN COOLING.
NOTICE
THIS UNIT IS WIRED FOR THREE-PHASE POWER
DO NOT CONNECT TO A SINGLE PHASE SUPPLY
5282990-UWD-A-0816
