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R7140G,L,M BURNER CONTROL MODULES
66-1153—03 10
Fig. 5. Internal block diagram of the R7140G1000. (See Fig. 8 for detailed wiring.)
CONFIGURATION
JUMPERS
MICROCOMPUTER
RESET
PUSHBUTTON
RUN/TEST
SWITCH
STATUS LEDs
PLUG-IN PURGE
TIMER CARD
SAFETY RELAY
CIRCUIT
POWER SUPPLY
KEYBOARD
DISPLAY MODULE
HIGH FIRE
COMMON
MODULATE
LOW FIRE
PLUG-IN
FLAME
AMPLIFIER
RELAY
DRIVE
CIRCUIT
CONTROL
POWER
TEST
JACK
REMOTE
RESET
DDL
DDL
COMMUNICATIONS
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS
IGNITION
PILOT
PILOT/V2
MAIN VALVE
1K
9K
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
LIMITS
CONTROLLER
RUNNING/
LOCKOUT
INTERLOCK
PRE-IGNITION
INTERLOCK
1K1 2K1 5K1
8K1
8K2
9K1
9K2
120 Vac,
50/60 Hz
FLAME SIGNAL
TEST
LOW FIRE SWITCH
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
RS485
1
2
3
L1
(HOT) L2
L1
16
3
4K1
7K1
2K2
18
5
6
7
13
8K
7K
6K
5K
4K
3K
2K
F
G
17
1
BLOWER
6K1
8
ALARM
3K1
9
10
11
12
14
M23320
1
L2
FIELD WIRING
INTERNAL WIRING
R1
4
R1