Honeywell R7140G Installation Instructions Manual page 13

INITIATE
(INITIAL
POWERUP
ONLY) STANDBY
POWER POWER
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCKS
FLAME
SIGNAL
FIRING
RATE
MOTOR
1 FOR R7140L1009:
L1 TO 4.
4 TO 3.
PII MEANS PRE-IGNITION INTERLOCK.
2
Fig. 9. Operating sequence, R7140L1009 and R7140L2007.
PREPURGE PREPURGE
HOLD HOLD
00 00 00
TIMED
DRIVE TO DRIVE TO
PREPURGE
HIGH FIRE LOW FIRE
POWER POWER
PILOT
FLAME
MAIN
ALARM
BURNER/BLOWER MOTOR
LIMITS AND BURNER CONTROLLER CLOSED
LOCKOUT INTERLOCKS CLOSED
PII CLOSED
4
2
8 TO 15 HIGH FIRE SW.
SAFE START CHECK
SWITCHING
10 11
TO
MOTOR ACTION
13
R7140G,L,M BURNER CONTROL MODULES
R7140L
PFEP
10 SEC.
00 10 20 25
(4 SEC. IF
JR1 CLIPPED MFEP
POWER POWER POWER
PILOT
PILOT PILOT
FLAME FLAME
FLAME
MAIN MAIN
MAIN
ALARM ALARM ALARM
IGN. 5 SEC.
18
10 SEC. IGN./PILOT 5
15 SEC. PILOT 6
MAIN VALVE
TO
L1
16 TO
TO 16
13
LOW FIRE SW. 8 TO
FLAME PROVING
10 TO 14
00 15
RUN POSTPURGE STANDBY
POWER POWER POWER
PILOT
FLAME
MAIN
ALARM
8
7
16
1
3
1
SSC
10 TO 11
TO
10 14
M23322
66-1153—2