Honeywell R7140G Installation Instructions Manual page 17

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