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R7140G,L,M BURNER CONTROL MODULES
66-1153—03 18
Fig. 13. Block diagram of field wiring for the R7140L2007, used for replacing
BC7000L1000 with PM720L.
RECTIFYING FLAME
ROD, RECTIFYING
PHOTOCELL, OR
INFRARED
(LEAD SULFIDE)
FLAME DETECTOR
C7027A, C7035A, OR
C7044A ULTRAVIOLET
FLAME DETECTOR
C7012A, C, C7076A, OR
C7061
ULTRAVIOLET
FLAME DETECTOR
HIGH FIRE
PURGE SWITCH
LOW FIRE START
SWITCH
BURNER MOTOR
(BLOWER)
MAIN FUEL
VALVE(S)
10 SECOND
INTERRUPTED
PILOT/IGNITION
15 SECOND
INTERRUPTED
PILOT
IGNITION
TRANSFORMER
LOCKOUT
INTERLOCKS
(INCLUDING
AIRFLOW SWITCH)
PREIGNITION
INTERLOCKS
BURNER
CONTROLLER
120V ALARM
MASTER
SWITCH
120V, 60 HZ
POWER
SUPPLY
L1 (HOT)
L2
TO
MAIN FUEL VALVE (S)
L2
5
6
7
FOR DIRECT SPARK IGNITION (OIL OR GAS)
5
6
7
8
G
L1
L2
12
13
F
3
4
9
10
11
W
R
B
W
R
B
5 SECOND IGNITION
(EARLY SPARK
TERMINATION)
LIMITS
PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
USE ALL NEC CLASS 1 WIRING.
IN SOME INSTALLATIONS THE LOW FIRE INTERLOCK IS BETWEEN
TERMINALS L1 AND 13.
C7076 COMES WITHOUT LEADWIRES; C7061 DOES NOT HAVE BLACK LEADWIRES.
1
1
2
3
L1
L2
L2
18
17
16
15
14
BLUE
BLUE
BLACK
BLACK
WHITE
WHITE
WHITE
YELLOW
OR
OR
M22611B
HIGH FIRE
COMMON
MODULATE
LOW FIRE
SERIES 90
CONTROLLER
SERIES 90
FIRING RATE
MOTOR
JUMPER
3
2
WIRING
SUBBASE
TERMINAL
STRIP (4)
4
4