Honeywell RM7897C1000 User Manual

RM7897A1002, RM7897C1000 7800 SERIES RELAY MODULES
66-1151 4
Fig. 2. Wiring subbase and sequence chart for RM7897A.
M22728B
G
L2
3
5
6
7
8
9
10
F
(L1)
13
14
15
16
17
18
19
20
21
22
12
MASTER
SWITCH
IGNITION
MAIN FUEL VALVE(S)
BURNER
CONTROLLER/LIMITS
BURNER MOTOR
(BLOWER)
INTERMITTENT
PILOT/IGNITION
120 VAC, 50/60 HZ POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
FOR DIRECT SPARK IGNITION
(OIL OR GAS)
LINE VOLTAGE ALARM
L1
(HOT)
L2
1
8
10
IGNITION
TRANSFORMER
MAIN VALVE
1
Q7800
2
2
L2
4
RUNNING INTERLOCK
(INCLUDING
AIRFLOW SWITCH)
FLAME DETECTOR
SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT WIRING.
PROGRAMMED ON SETUP USING S7800A1142 DISPLAY.
PURGE TIME DEPENDS ON WHICH ST7800 IS INSTALLED.
3
3
4
5
PREIGNITION
INTERLOCK
10-SECOND
INTERRUPTED
PILOT
POWER
OPERATING
CONTROLS
AND
INTERLOCKS
BURNER
FLAME
SIGNAL
INITIATE
(INITIAL
POWERUP
ONLY)
POWER
STANDBY
POWER
PILOT
FLAME
MAIN
PFEP
10 SEC.
(4 SEC. IF
JR1
CLIPPED
POWER
MFEP
PILOT
FLAME
MAIN
RUN
POWER
POSTPURGE
POWER
STANDBY
00
10
00
20
BURNER/BLOWER MOTOR
IGN.
LIMITS AND BURNER CONTROLLER CLOSED
RUNNING INTERLOCKS CLOSED
PREIGNITION INTERLOCK CLOSED
SAFE START CHECK FLAME PROVING
8
10
5
21
6
TO
7TO
20TO5
6
L1
MAIN VALVE
9
TIMED
PREPURGE
POWER
FLAME
MAIN
PILOT
ALARM
POWER
FLAME
MAIN
PILOT
ALARMALARMALARM
00
PII
SSC
LED
DISPLAY
INTERRUPTED PILOT
8INTERMITTENT PILOT
21
4
5

Honeywell RM7897C1000 Specifications

General

Brand	Honeywell
Model	RM7897C1000
Category	Control Unit
Language	English