Thomas & Betts RZ405, RGM 405 dimensions Typical Wiring Diagrams

TYPICAL WIRING DIAGRAMS

Figure 17 - Typical Wiring Diagram for Model CAUA with Direct-Drive Blower Motor(s)

OPTIONAL DISCONNECT SWITCH

G

GRD

(SEE NOTE)

BL

BL

INHERENTLY

HEAT SPEED

INHERENTLY

PROTECTED

CONTACTS

BLOWER

PROTECTED

MOTOR

L1

BK

BL

BL

BLOWER

BK

(SEE NOTE #7)

MOTOR

230/1/60

W

W

W

R

R

W

COOL SPEED CONTACTS

OR

BK

BK

BK

BK

BK

208

W

W

W

MOTOR WIRE COLORS

L2

W

W

WHITE - NEUTRAL

BLACK - HIGH SPEED

GRD

BLUE - MEDIUM SPEED

G

RED - LOW SPEED

(DO NOT USE WITH 208V)

BK

W

VENTER MOTOR

DSI CONTROL

(SEE NOTE #8)

L1

BK

BK

LINE

CMB

BK OR BR

BK OR BL

L2

VAC HOT

BLWR AUX

HEAT SPEED

CONTACTOR COIL

1

BL

BL

24VAC

ACB HEAT

BK

W

WIRING CODE

FLAME

HOT

COOL SPEED

BLACK - BK

ROLLOUT SWITCH

CONTACTOR COIL

BROWN - BR

BL

BL

BL

BK

W

1

ROLLOUT

ACB COOL

L2

RED - R

CUSTOMER'S

IN

ORANGE - O

COOL RELAY COIL

YELLOW - Y

C

GROUND

BR

BR

7

GREEN - G

BLUE - BL

IGNITOR

PURPLE - PR

BR

WHITE - W

THERMOSTAT

HV LEAD

7

BURNER GROUND

TERMINAL STRIP

R

BL

FLAME SENSE

R

FLAME SENSING

PROBE

PRESSURE SWITCH

HIGH

NC

MAIN

LIMIT

ROBERTSHAWORW.R.ALTERNATE VALVEGASPASS-BY OUTLETPILOTPLUG

C

PSW

Y

Y

2

R

R

BR

C

R

R

HI LIMIT

C NO

MAIN

SUBBASEQ539ATHERMOSTATT87F AMPS0.6ATANTICIPATORSET

Y

BK

PILOT

HONEYWELL VALVEGASPASS-BY OUTLETPILOTPLUG

BK

R

Y1

IN

Y

2

BL

M

W

Y

Y2

BK

HI LIMIT

R

PILOT

OUT

G

TR OR

BK

Y

BR

W

W1

PV-MV

7

P

BL

R

LED

BL

G

W2

VALVE

TH OR

FACTORY WIRING

MV

G

Y

FIELD WIRING

CHASSIS GRND.

OPTIONAL FACTORY WIRING

							TH-TR
	DOOR SWITCH						OR PV
1	BL	BL	3	BL	24V	BR	BR	7
						40 VA. CONTROL		MAIN TERMINAL BLOCK
						TRANSFORMER
L1				BK	LINE VOLT	Y		Y L2
						R		UNIT TERMINAL STRIP

OPERATING SEQUENCE

1.SET THERMOSTAT SYSTEM SWITCH AT "OFF" POSITION, FAN SWITCH AT "AUTO" POSITION.

2.TURN ON MANUAL GAS VALVE.

3.TURN ON POWER TO UNIT.

4.SET THERMOSTAT SYSTEM SWITCH AT "HEAT" POSITION; FAN SWITCH AT "AUTO" POSITION.

5.THERMOSTAT CALLS FOR HEAT, ENERGIZING THE VENTER MOTOR.

6.VENTER PRESSURE SWITCH CLOSES, FIRING UNIT.

7.BURNER FLAME IS SENSED, AND IN 30 SECONDS THE BLOWER MOTOR IS ENERGIZED.

8.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).

9.SET THERMOSTAT SYSTEM SWITCH AT "COOL" POSITION, FAN SWITCH AT "AUTO" POSITION.

(A)ON A CALL FOR COOLING, BLOWER MOTOR IS ENERGIZED AT HIGH SPEED AND COOLING CIRCUIT IS ENERGIZED.

10.WHEN BLOWER DOOR IS OPENED, THE UNIT IS SHUTDOWN.

11.SET THERMOSTAT SYSTEM SWITCH AT "OFF" POSITION, FAN SWITCH AT "AUTO" POSITION, FOR SHUTDOWN..

NOTES

1.THE FOLLOWING CONTROLS ARE FIELD INSTALLED OPTIONS: THERMOSTAT

2.DOTTED WIRING AND COOL RELAY COIL INSTALLED BY OTHERS.

3.CAUTION: IF ANY OF THE ORIGINAL WIRING AS SUPPLIED WITH THE

APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE RATING OF AT LEAST 105° C. EXCEPT FOR SENSOR LEAD WIRE WHICH MUST BE 150° C.

4.USE 18 GA. WIRE FOR CONTROL WIRING ON THE UNIT.

5.USE 14 GA. WIRE FOR LINE AND MOTOR WIRING ON UNIT.

6.LINE AND FAN MOTOR BRANCH WIRE SIZES SHOULD BE OF A SIZE TO PREVENT VOLTAGE DROPS BEYOND 5% OF SUPPLY LINE VOLTAGE.

7.SECOND BLOWER MOTOR ON 250-400 UNITS ONLY.

8.VENTER MOTOR ON 350-400 UNITS HAS BROWN AND BLUE WIRES.

9.ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY. FOR 230V. UNITS USE BLACK AND YELLOW LEADS (CAP RED).

FOR 208V. UNITS USE BLACK AND RED LEADS (CAP YELLOW).

10.WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO

TIMES THE MAXIMUM TOTAL INPUT AMPS.

THERMOSTAT TERMINAL STRIP

LED CODES

SLOW FLASH NORMAL OPERATION - NO CALL FOR HEAT FAST FLASH NORMAL OPERATION - CALL FOR HEAT

2 FLASHES SYSTEM LOCKOUT - FAILED TO DETECT OR SUSTAIN FLAME 3 FLASHES PRESSURE SWITCH OPEN OR CLOSED

4 FLASHES HIGH LIMIT OPEN

5 FLASHES FLAME SENSED AND GAS VALVE NOT ENERGIZED

STEADY ON INTERNAL FAILURE (MICRO-CONTROLLER FAILURE: SELF CHECK)

		FIELD CONTROL WIRING
TOTAL WIRE		DISTANCE FROM	MIN. RECOMMENDED
LENGTH		UNIT TO CONTROL		WIRE GUAGE
150'	75'			#18 GA. WIRE
250'	125'			#16 GA. WIRE
350'	175'			#14 GA. WIRE

CAUA SERIES 150 - 400 DWG. # B-164607 REV	#1
AG1 - AK2 OR AK3 - CL10 - DIRECT DRIVE	BABS

Mfg No. 164771, Page 17