Honeywell 7800 Series Installation Instructions Manual page 4

Relay modules
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RM7897A1002, RM7897C1000 7800 SERIES RELAY MODULES
LINE VOLTAGE ALARM
BURNER MOTOR
(BLOWER)
BURNER
CONTROLLER/LIMITS
RUNNING INTERLOCK
(INCLUDING
AIRFLOW SWITCH)
INTERMITTENT
PILOT/IGNITION
MAIN FUEL VALVE(S)
IGNITION
FLAME DETECTOR
LED
DISPLAY
BURNER
OPERATING
CONTROLS
AND
INTERLOCKS
FLAME
SIGNAL
1
120 VAC, 50/60 HZ POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
2
66-1151
G
L2
3
4
5
6
7
8
9
10
F
3
INITIATE
00
(INITIAL
TIMED
POWERUP
PREPURGE
ONLY)
STANDBY
POWER
POWER
POWER
PILOT
FLAME
MAIN
ALARM
BURNER/BLOWER MOTOR
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCKS CLOSED
PREIGNITION INTERLOCK CLOSED
SAFE START CHECK
Fig. 2. Wiring subbase and sequence chart for RM7897A.
Q7800
FOR DIRECT SPARK IGNITION
12
(OIL OR GAS)
IGNITION
13
10
TRANSFORMER
14
8
MAIN VALVE
15
(L1)
16
17
2
18
19
PREIGNITION
20
INTERLOCK
21
MASTER
22
SWITCH
PFEP
5
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
5
10
IGN.
INTERMITTENT PILOT
8
8
21
21
INTERRUPTED PILOT
MAIN VALVE
TO
L1
6
6
TO
7
5
TO
20
FLAME PROVING
SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT WIRING.
3
PROGRAMMED ON SETUP USING S7800A1142 DISPLAY.
4
PURGE TIME DEPENDS ON WHICH ST7800 IS INSTALLED.
5
4
L2
10-SECOND
INTERRUPTED
PILOT
L1
(HOT)
1
L2
00
4
POSTPURGE
STANDBY
POWER
POWER
9
PII
SSC
M22728B

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