Thomas & Betts RGM 405, RZ405 dimensions Typical Wiring Diagrams contd

TYPICAL WIRING DIAGRAMS (cont'd)

Figure 18 - Typical Wiring Diagram for Models CAUA with Belt-Drive Blower Motor

OPTIONAL DISCONNECT SWITCH

G

GRD

(SEE NOTE)

INHERENTLY

MOTOR

PROTECTED

CONTACTOR

BLOWER

L1

BK

BK

MOTOR

OR 230/1/60

W

W

208

L2

G

GRD

BK

W

DSI CONTROL

VENTER MOTOR

(SEE NOTE #8)

L1

BK

BK

LINE

CMB

BK OR BR

BK OR BL

L2

VAC HOT

BLWR AUX

MOTOR

CONTACTOR COIL

1

BL

BL

24VAC

ACB HEAT

BK

W

L2

FLAME

HOT

ROLLOUT SWITCH

1

BL

BL

CUSTOMER'S

BL

ROLLOUT

ACB COOL

BK

L2

IN

COOL RELAY COIL

C

GROUND

BR

BR

7

IGNITOR

THERMOSTAT

HV LEAD

BR

7

BURNER GROUND

TERMINAL STRIP

R

BL

FLAME SENSE

R

FLAME SENSING

PROBE

C

Y

PRESSURE SWITCH

HIGH

NC

LIMIT

SUBBASEQ539ATHERMOSTATT87F AMPS0.6ATANTICIPATORSET

R

R

Y

Y1

PSW

BK

PILOT

HONEYWELL

VALVEGASPASS-BY OUTLETPILOTPLUG

R

NO

Y 2

R

R

C

W

Y

Y2

BK

HI LIMIT

Y

2

IN

G

W

W1

BK

Y

HI LIMIT

R

OUT

LED

G

W2

BL

R

TR OR

BR

7

PV-MV

Y

BL

MAIN

G

VALVE

TH OR

CHASSIS GRND.

MV

TH-TR

DOOR SWITCH

OR PV

1

BL

BL

3

BL

24V

BR

BR

7

40 VA. CONTROL

BK

Y

TRANSFORMER

Y

L1

LINE VOLT

L2

R

MAIN TERMINAL BLOCK

UNIT TERMINAL STRIP

THERMOSTAT TERMINAL STRIP

WIRING CODE

BLACK - BK

BROWN - BR

RED - R

ORANGE - O

YELLOW - Y

GREEN - G

BLUE - BL

PURPLE - PR

WHITE - W

FACTORY WIRING

FIELD WIRING

OPTIONAL FACTORY

WIRING

	BR	C	ALTERNATE W.R. ORROBERTSHAW BY-PASS GAS VALVE PLUG PILOT OUTLET
	BL	MAIN
		M
BK		PILOT
		P

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 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.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).

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

9.WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25 TIMES THE MAXIMUM TOTAL INPUT AMPS.

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

Form 405, Page 18