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R7140G,L,M BURNER CONTROL MODULES
11 66-1153—03
Fig. 6. Internal block diagram of the R7140G2008. (See Fig. 7 for detailed wiring.)
CONFIGURATION
JUMPERS
MICROCOMPUTER
RUN/TEST
SWITCH
PLUG-IN PURGE
TIMER CARD
POWER SUPPLY
HIGH FIRE
COMMON
MODULATE
LOW FIRE
PLUG-IN
FLAME
AMPLIFIER
CONTROL
POWER
TEST
JACK
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLT INPUTS
FIELD WIRING
INTERNAL WIRING
IGNITION
PILOT
PILOT/V2
MAIN VALVE
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.
L1
(HOT)
L2
L1
16
4
3
4K1
7K1
2K2
18
5
6
7
13
F
G
17
1
BLOWER
6K1
8
ALARM
3K1
9
L2
12
13
15
14
M23321
1