R7140G,L,M BURNER CONTROL MODULES
966-1153—03
Fig. 4. Operating sequence, R7140G1000/R7140G2008.R7140G
POWER
OPERATING
CONTROLS
AND
INTERLOCKS
BURNER
FLAME
SIGNAL
FIRING
RATE
MOTOR
INITIATE
(INITIAL
POWERUP
ONLY)
POWER
STANDBY
PREPURGE
HOLD
DRIVE TO
LOW FIRE
POWER
PILOT
FLAME
MAIN
POWER
PFEP
10 SEC.
(4 SEC. IF
JR1
CLIPPED
PILOT
FLAME
MAIN
POWER
MFEP
PILOT
FLAME
MAIN
RUN
POWER
POSTPURGE
POWER
STANDBY
00 00 10 25 00 1520
MOTOR ACTION
BURNER/BLOWER MOTOR
IGN.
15 SEC. INTERRUPTED PILOT VALVE
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCKS CLOSED
PII CLOSED
LOW FIRE SW.
SAFE START CHECK FLAME PROVING
10 SEC. IGN./PILOT 5
18
8
5 SEC.
6
TO
3TO
16
TO
813
TO
10 11
TO
10 11
TO
M23319
INTERLOCK. CHECK
14 11
TO 14 11
TO
4
16
L1
MAIN VALVE 7
TIMED
PREPURGE
POWER
FLAME
MAIN
PILOT
ALARM
POWER
FLAME
MAIN
PILOT
ALARMALARMALARMALARM
00
IC
SSC
LED
DISPLAY
R7140G SWITCHING
1TERMINAL 6 HAS THE FOLLOWING OPTIONS:
AS RECEIVED - INTERMITTENT PILOT
JR2 CLIPPED - 15 SECOND MAIN FLAME ESTABLISHING PERIOD (INTERRUPTED PILOT)
JR2 CLIPPED PLUS TERMINALS 8 - 15 JUMPERED - 30 SECOND MAIN FLAME ESTABLISHING PERIOD (INTERRUPTED PILOT)
1
16
2
2
PII MEANS PRE-IGNITION INTERLOCK.
3FOR R7140G1000:
L1 TO 4
4 TO 3
3
3