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Available languages
L1
L1
LIMITS
CONTROLLER
INITIATE
(INITIAL
POWERUP
ONLY)
STANDBY
POWER
POWER
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCKS
FLAME
SIGNAL
DAMPER
MOTOR
1
PII MEANS PRE-IGNITION INTERLOCK.
PURGE
17
TIMER
F
FLAME
AMPLIFIER
G
3K1
1R1
6K1
PRE-
LF
IGNITION
D
3
13
AIRFLOW
1K1
P
10
11
8K2
9K1
X
9K2
12
Fig. 5. Internal block diagram of R7120D3007.
R7120D 3007
PREPURGE
PFEP
HOLD
10 SEC.
00
00
00
TIMED
DRIVE TO
(4 SEC. IF
PREPURGE
LOW FIRE
JR1 CLIPPED
POWER
POWER
PILOT
PILOT
FLAME
FLAME
MAIN
MAIN
ALARM
ALARM
BURNER/BLOWER MOTOR
10 SEC. IGN./PILOT 5
INTERMITTENT PILOT VALVE
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCKS CLOSED
PII CLOSED
3
1
LOW FIRE SW.
SAFE START CHECK
R7120D SWITCHING
10
10
11
TO
MOTOR ACTION
Fig. 6. Operating sequence for R7120D3007.
7
R7120D BURNER CONTROL MODULES
CONFIGURATION
JUMPERS
INTERNAL
ELECTRONICS
A
ALARM
M
BLOWER
1R1
4K1
INTERMITTENT
5
PILOT
7K1
15 SECOND
INTERMITTENT
6
PILOT VALVE
2K2
7
MAIN VALVE
10
20
25
00
MFEP
RUN
POWER
POWER
POWER
PILOT
PILOT
PILOT
FLAME
FLAME
FLAME
MAIN
MAIN
MAIN
ALARM
ALARM
ALARM
M
6
MAIN VALVE
7
TO
L1
13
3
TO
P
TO
13
M
TO
D
FLAME PROVING
10
TO
11
TO
12
L2
L2
M32639
15
POSTPURGE
STANDBY
POWER
POWER
SSC
10
TO
12
M32640
66-1196EF—01
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