Honeywell R7140G Installation Instructions Manual page 18

R7140G,L,M BURNER CONTROL MODULES
INITIATE
(INITIAL
POWERUP
ONLY)
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCKS
FLAME
SIGNAL
DAMPER
MOTOR
66-1153—2
00
TIMED
PREPURGE
STANDBY
POWER POWER POWER
PILOT
FLAME
MAIN
ALARM
BURNER/BLOWER MOTOR
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCKS CLOSED
PII CLOSED
SAFE START CHECK
R7140M SWITCHING 1
10 L2
TO
MOTOR ACTION
1 WHEN USING A SPRING RETURN ACTUATOR MOTOR, REMOVE J1 AND J2 JUMPERS LOCATED ON R7140M SUBBASE.
2 PII MEANS PRE-IGNITION INTERLOCK.
R7140M WHEN USED AS BC7000 REPLACEMENT ON R4140 WITH START INTERLOCKS L1 TO 16.
3
Fig. 14. Operating sequence, R7140M.
R7140M
PREPURGE PFEP
HOLD 10 SEC.
00 00 10
DRIVE TO (4 SEC. IF
LOW FIRE JR1 CLIPPED MFEP
POWER POWER POWER
PILOT
PILOT PILOT
FLAME FLAME
FLAME
MAIN MAIN
MAIN
ALARM ALARM ALARM
18 IGN. 5 SEC.
10 SEC. IGN./PILOT 5
INTERMITTENT PILOT VALVE
MAIN VALVE
16
4 TO 16
2
8
LOW FIRE SW. TO
FLAME PROVING
18
20 25 00 15
RUN POSTPURGE STANDBY
POWER POWER
PILOT
FLAME
MAIN
ALARM
8
6
7
TO
L1 4
3
TO 3
3
13
10 L2
TO
POWER
SSC
M23331