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R7120D BURNER CONTROL MODULES
7
66-1196EF—01
Fig. 5. Internal block diagram of R7120D3007.
Fig. 6. Operating sequence for R7120D3007.
INTERNAL
ELECTRONICS
M32639
CONFIGURATION
JUMPERS
PURGE
TIMER
FLAME
AMPLIFIER
ALARM
BLOWER
INTERMITTENT
PILOT
1R1
3K1
6K1
A
M
6
MAIN VALVE
7
LF
D
F
G
17
L1
L1
L2
L2
15 SECOND
INTERMITTENT
PILOT VALVE
5
4K1
7K1
2K2
1K1
P
AIRFLOW
3
13
LIMITS
CONTROLLER
1R1
X
10
PRE-
IGNITION
11
8K2
9K1
12
9K2
R7120D 3007
POWER
OPERATING
CONTROLS
AND
INTERLOCKS
BURNER
FLAME
SIGNAL
DAMPER
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 15
20
MOTOR ACTION
BURNER/BLOWER MOTOR
INTERMITTENT 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
M
6
13
TO
P
TO
13
TO
M
D
TO
10
11
TO
10
12
TO
10
12
TO
10
11
TO
M32640
3
3
L1
MAIN VALVE
7
TIMED
PREPURGE
POWER
FLAME
MAIN
PILOT
ALARM
POWER
FLAME
MAIN
PILOT
ALARM
ALARM
ALARM
ALARM
00
SSC
LED
DISPLAY
R7120D SWITCHING
1
1
PII MEANS PRE-IGNITION INTERLOCK.
Содержание R7120D
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