Honeywell 7800 Series Installation Instructions Manual page 8

RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCKS
FLAME
SIGNAL
120 VAC, 50/60 HZ POWER SUPPLY. PROVIDE DISCONNECT MEANS
1
AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
2
PROGRAMMABLE POST PURGE TIMING USING S7800A1142 KDM.
3
SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT WIRING.
4
PURGE TIME DEPENDS ON WHICH ST7800 IS INSTALLED.
5
Fig. 6. Wiring subbase and sequence chart for RM7898 operating Valve Proving.
32-00209-03
LINE VOLTAGE ALARM
BURNER MOTOR
(BLOWER)
AIRFLOW INTERLOCKS
INTERMITTENT/
INTERRUPTED PILOT/
6
IGNITION
MAIN FUEL VALVE 1
IGNITION
7
FLAME DETECTOR
4
INITIATE
(INITIAL
5
00
POWERUP TIMED
ONLY) PREPURGE
STANDBY
POWER POWER POWER
PILOT
FLAME
MAIN
ALARM
10
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCK
PREIGNITION INTERLOCK CLOSED
SAFE START CHECK
8
Q7800
2
SUBBASE
12
G
L2 13
3 14
4 15
VALVE PROVING
(L1)
16
5
SWITCH
BURNER
6 17
CONTROL
18
7
8
8
19
6
PREIGNITION
20
9
INTERLOCK (POC)
MAIN FUEL
10 21
VALVE #2
11 22
MASTER
PFEP SWITCH
10 SEC.
00 10 20
(4 SEC. IF
JR1 CLIPPED MFEP RUN
POWER POWER POWER
PILOT PILOT
PILOT
FLAME FLAME
FLAME
MAIN MAIN
MAIN
ALARM ALARM ALARM
4
BURNER/BLOWER MOTOR
IGNITION
7
INTERRUPT/PILOT 8
MAIN VALVE
9
MAIN VALVE 2 21
TO
L1 17
7
17 TO
5 TO 20
FLAME PROVING
PROVIDE LINE VOLTAGE INPUT TO TERMINAL 19 FOR
6
INTERMITTENT PILOT OPERATION.
RM7898A1018 PROVIDES FOR EARLY SPARK TERMINATION
7
(IGNITION SHUTS OFF WHEN FLAME IS SENSED). PFEP
TIMING WILL COMPLETE BEFORE GOING TO MAIN FLAME
ESTABLISHING PERIOD.
PROVIDE LINE VOLTAGE INPUT TO TERMINAL 19 FOR GAS
8
FIRED DIRECT SPARK IGNITION APPLICATIONS.
ALTERNATE WIRING IF VALVE PROVING BOTH, SPLIT EACH
9
AFTER ARE SELECTED.
LIMITS
9
L1
(HOT)
1
L2
00
3
POSTPURGE STANDBY
POWER POWER
6
9
PII
SSC
M23873A