R7140G,L,M BURNER CONTROL MODULES
21 66-1153—03
Fig. 17. R7140M1007 used on applications replacing R4140M Programmers with Start Interlocks or BC7000 with PM720M.RECTIFYING FLAME
ROD, RECTIFYING
PHOTOCELL, OR
INFRARED
(LEAD SULFIDE)
FLAME DETECTOR
C7027A, C7035A, OR
C7044A ULTRAVIOLET
FLAME DETECTOR
C7012A, C, E, OR F
ULTRAVIOLET
FLAME DETECTOR
LOW FIRE
START SWITCH
MAIN FUEL
VALVE(S)
INTERMITTENT
PILOT
5 SECOND IGNITION
(EARLY SPARK
TERMINATION)
RUNNING
INTERLOCKS
(INCLUDING
AIRFLOW SWITCH)
BURNER
CONTROLLER
120V ALARM
MASTER
SWITCH
120V, 60 HZ
POWER
SUPPLY
L1 (HOT)
L2
5
6
7
8
G
L1
L2
12
13
F
3
4
9
10
11
LIMITS
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
USE ALL NEC CLASS 1 WIRING.
START INTERLOCKS IF USED BECOME PRE-IGNITION
INTERLOCKS (MUST REMAIN CLOSED UNTIL IGNITION TRIALS BEGIN.)
PM720M 16 TO 4 IS A PRE-IGNITION INTERLOCK.
USE 2 POSITION SPRING RETURN MOTOR.
WHITE LEADWIRES ON C7012 U.V. FLAME DETECTORS. REPLACE C7012
WITH C7061 UV DETECTOR AND R7861A1026 AMPLIFIER.
MAKE SURE CONNECTOR IS ON TERMINAL 16.
REMOVE J1 AND J2 JUMPERS ON R7140M IF LOW FIRE SWITCH OR A JUMPER
IS CONNECTED BETWEEN 8 AND 13.
1
1
2
L1
L2
L2
18
17
16
15
14
BLUE
BLUE
BLACK
BLACK
WHITE
WHITE
WHITE
YELLOW
OR
OR
IGNITION
1ST STAGE
FUEL VALVE
2ND STAGE
FUEL VALVE
(OPTIONAL)
TO
L2
5
6
7
FOR DIRECT SPARK IGNITION OF OIL OR GAS
3
DAMPER
CONTROL
10 SECOND
INTERRUPTED
PILOT/IGNITION
BURNER MOTOR
WIRING
SUBBASE
TERMINAL
STRIP (4)
2
3
5
8
6
7
4
5
6
7
8
4