Reznor CAUA Unit Installation Manual - Manual (Page 36)

Form I-CAUA, P/N 164771 R8, Page 36
FIGURE 29B - Wiring Diagram with Single-Stage Gas Control
and Direct Drive Blower Motor
7.0 Electrical
and Wiring
(cont'd)
USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25
7. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH
6. VENTER MOTOR ON 350-400 UNITS HAS BROWN AND BLUE WIRES.
VOLTAGE DROPS BEYOND 5% OF SUPPLY LINE VOLTAGE.
5. LINE AND FAN MOTOR BRANCH WIRE SIZES SHOULD BE OF A SIZE TO PREVENT
HAVING A TEMPERATURE RATING OF AT LEAST 105° C. EXCEPT FOR SENSOR
APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL
3. CAUTION: IF ANY OF THE ORIGINAL WIRING AS SUPPLIED WITH THE
1. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:
TIMES THE MAXIMUM TOTAL INPUT AMPS.
4. USE #18 GA. WIRE FOR CONTROL WIRING ON THE UNIT.
LEAD WIRE WHICH MUST BE 150° C.
2. DOTTED WIRING INSTALLED BY OTHERS.
NOTES
8. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.
THERMOSTAT
OPERATING SEQUENCE
- WHEN BLOWER DOOR IS OPENED, THE UNIT IS SHUTDOWN.
1. SET THERMOSTAT SYSTEM SWITCH AT "OFF" POSITION,
2. TURN ON MANUAL GAS VALVE.
3. TURN ON POWER TO UNIT.
- THERMOSTAT CALLS FOR LOW HEAT, ENERGIZING THE VENTER MOTOR.
- VENTER PRESSURE SWITCH CLOSES, FIRING UNIT AT LOW RATE.
- BURNER FLAME IS SENSED, AND IN 30 SECONDS THE BLOWER
MOTOR IS ENERGIZED.
- IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION,
THE INTEGRATED CONTROL SYSTEM CLOSES THE MAIN VALVE AND
MUST BE RESET BY INTERRUPTING POWER TO THE CONTROL CIRCUIT
(SEE LIGHTING INSTRUCTIONS).
4. SET THERMOSTAT SYSTEM SWITCH AT "AUTO" POSITION,
5. SET THERMOSTAT SYSTEM SWITCH AT "OFF" POSITION FOR SHUTDOWN.
- ON CALL FOR COOLING THE BLOWER IS ENERGIZED AND CUSTOMER'S
FAN SWITCH AT "AUTO" POSITION.
FAN SWITCH AT "AUTO" POSITION.
COOLING CIRCUIT IS ENERGIZED.
- ON CALL FOR HIGH HEAT THE UNIT FIRES AT FULL RATE.
FAST FLASH UNDESIRED FLAME (VALVE OPEN &
NO CALL FOR HEAT)
IN LOCKOUT FROM FAILED IGNITIONS OR
FLAME LOSSES
PRESSURE SWITCH IS CLOSED BEFORE
VENTER IS ENERGIZED
PRESSURE SWITCH DOES NOT CLOSE
WITHIN 30 SECONDS OF VENTER
ENERGIZED
WEAK FLAME
INTERNAL CONTROL FAULT OR NO
POWER
YELLOW LED
FLAME SENSED
LIMIT SWITCH OPEN
NORMAL OPERATION NO CALL FOR HEAT
NORMAL OPERATION CALL FOR HEAT
LED FLASH CODES
GREEN LED
STEADY ON
FAST FLASH
1 FLASH
2 FLASH
SLOW FLASH
3 FLASH
STEADY OFF
4 FLASH
STEADY ON
FIELD CONTROL WIRING
150'
250'
350'
75'
125'
175'
#18 GA. WIRE
#16 GA. WIRE
#14 GA. WIRE
TOTAL WIRE
LENGTH
DISTANCE FROM
UNIT TO CONTROL
MIN. RECOMMENDED
WIRE GAUGE
FIELD WIRING
OPTIONAL
FACTORY WIRING
FACTORY WIRING
WHITE - W
PURPLE - PR
BLUE - BL
GREEN - G
YELLOW - Y
ORANGE - O
RED - R
BROWN - BR
BLACK - BK
WIRING CODE
MAIN TERMINAL BLOCK
UNIT TERMINAL STRIP
THERMOSTAT TERMINAL
STRIP
CRIMP TERMINAL
WIRE CONNECTOR
MIXING BOX
AUXILIARY MAIN
THREE PHASE POWER
TERMINAL STRIP
Line and Motor Wiring Size
HP Voltage Phase Wire Ga
1/4-2
208-230 1
14
3 10
5 8
1/4-3
208-230 3
14
5 12
1/4-5 460-575 3 14
VENTER MOTOR (VM1)
LED
DSI CONTROL
SW1
FAN OFF DELAY
TIME
90
120
160
180
OFF
OFF
ON
ON
ON
OFF
OFF
ON
1 2
S W 1
IND BK OR BL
NEUTRAL BK OR BR
(SEE NOTE #6) LED
OK FLAME
G Y
NEUTRAL
LIMIT CONTROL
R R
R
P1-8
P1-3
BK OR BL
BR P1-2
P1-4 BL
BK
L1 NEUTRAL L1 SEC
AT
O OR A
TC
3.0 A
MP
TEST
FUSE
FLAME
ROLLOUT SWITCH
ACB HEAT
ACB COOL
W
L1
L2
W L2
COM
1
O
BR
FLAME
ELECTRODE
FLAME
GROUND
P1-7
P1-9
PRESSURE SWITCH
Y
Y P1-6
P1-5 W
3
SPARK GAP
SPARK
TRANSFORMER
BL
BK
BR
TRANSFORMER
40 VA
BR BL
BK
R
BL
DOOR SWITCH
BK BK BK
CAUA: AG1-AK3-DR1
WD #280695
R R
C NO
SEE NOTES FOR
LED FLASH CODES
(TX1)
(DS1)
GAS VALVE
HONEYWELL
MV
MV
BL
BR
3
R
W
G
Y
P3-4
P3-3
P3-2
R
G
W
TERMINAL STRIP
THERMOSTAT
C
Y1
Y2
W1
W2
P3-1 Y
P3-5 BR
G
7
R
C
RELAY COIL
CUSTOMER'S COOL
(NOT IN
SEQUENCE)
230/1/60
GRD G
DISCONNECT SWITCH
CONTACTS
HEAT SPEED
MOTOR
BLOWER L1
L2
PROTECTED
INTERNALLY
BL
BK
W
BL
W
BK
BK
W
BL BL
W
W
W W
BK
BK
W
W R
R
(SEE NOTES)
BK BK CONTACTS
COOL SPEED
ACB HEAT
ACB COOL BK
BK L2
CONTACTOR COIL
W
HEAT SPEED
CONTACTOR COIL
COOL SPEED
W BK
BK
L2
24V
R
230V Y
Y
BK
BK W
INTERNALLY
PROTECTED
BLOWER
MOTOR
7.3 Typical Wiring Diagrams