R7140G,L,M BURNER CONTROL MODULES
66-1153—03 12
Fig. 7. Wiring diagram for R7140G2008 for application replacing R4140G with start Interlock or BC7000L1000 with PM720G.RECTIFYING FLAME
ROD, OR
INFRARED
(LEAD SULFIDE)
FLAME DETECTOR
C7027A, C7035A, OR
C7044A ULTRAVIOLET
FLAME DETECTOR
C7012A, C, C7061, OR
C7076A ULTRAVIOLET
FLAME DETECTOR
LOW FIRE
START SWITCH
BURNER MOTOR
(BLOWER)
MAIN FUEL
VALVE(S)
10 SECOND
INTERRUPTED
PILOT/IGNITION
PILOT/IGNITION
RUNNING
INTERLOCKS
(INCLUDING
AIRFLOW SWITCH)
PREIGNITION
INTERLOCK(S)
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
W
R
B
W
R
B
LIMITS
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
USE ALL NEC CLASS 1 WIRING.
START INTERLOCKS IF USED BECOME PREIGNITION INTERLOCKS - (MUST REMAIN CLOSED UNTIL IGNITION TRIALS BEGIN.)
TERMINAL 6 HAS THE FOLLOWING OPTIONS:
AS RECEIVED - INTERMITTENT PILOT
JR2 CLIPPED - 15 SECOND MAIN FLAME ESTABLISHING PERIOD
JR2 CLIPPED AND JUMPER FROM 8-15 - 30 SECOND MAIN FLAME ESTABLISHING PERIOD.
C7012E.F NEEDS TO BE UPDATED TO C7061.
1
1
2
3
L2
18
17
16
15
14
BLUE
BLUE
WHITE
WHITE
WHITE
YELLOW
OR
OR
M22607B
HIGH FIRE
COMMON
MODULATE
LOW FIRE
SERIES 90
CONTROLLER
SERIES 90
FIRING RATE
MOTOR
IGNITION
TRANSFORMER
1ST STAGE
FUEL VALVE
2ND STAGE
FUEL VALVE
(OPTIONAL)
TO
L2
5
6
7
FOR DIRECT SPARK IGNITION (OIL OR GAS)
3
WIRING
SUBBASE
TERMINAL
STRIP (4)
2
4
4
5
5
4
5 SECOND IGNITION
(EARLY SPARK
TERMINATION)