Honeywell RM7898A1000 User Manual

RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
7 32-00209—03
Fig. 5. Wiring subbase and sequence chart for RM7898 without Valve Proving.
G
L2
3
4
5
6
7
8
9
10
13
14
15
16
17
18
19
20
21
22
12
AIRFLOW INTERLOCK
MASTER
SWITCH
IGNITION
MAIN FUEL VALVE #1
BURNER
CONTROL
LINE VOLTAGE
INTERRUPTED PILOT/
IGNITION
PRE-IGNITION
INTERLOCK (POC)
FLAME DETECTOR
BURNER MOTOR
(BLOWER)
Q7800 SUBBASE
1
3
11
2
ALARM
LIMITS
6
7
L1
L2
L1
6
PFEP
1
0 SEC
.
(4 SEC. I
F
J
R
1
C
LIPPE
D
9
M23872A
PROVIDE LINE VOLTAGE INPUT TO TERMINAL 19 FOR
INTERMITTENT PILOT OPERATION.
RM7898A1018 PROVIDES FOR EARLY SPARK TERMINATION
(IGNITION SHUTS OFF WHEN FLAME IS SENSED), PFEP
TIMING WILL COMPLETE BEFORE GOING TO RUN.
POWER
OPERATING
CONTROLS
AND
INTERLOCKS
BURNER
FLAME
SIGNAL
INITIATE
(INITIAL
POWERUP
ONLY)
POWER
STANDBY
POWER
PILOT
FLAME
MAIN
POWER
MFEP
PILOT
FLAME
MAIN
RUN
POWER
POSTPURGE
POWER
STANDBY
00
10
00
20
IGN.
RUNNING INTERLOCKS CLOSED
PREIGNITION INTERLOCK CLOSED
SAFE START CHECK
FLAME PROVING
10
7TO
20TO
5
6
MAIN VALVE
9
8
TIMED
PREPURGE
POWER
FLAME
MAIN
PILOT
ALARM
POWER
FLAME
MAIN
PILOT
ALARMALARMALARM
00
PII
SSC
LED
DISPLAY
INTERRUPTED PILOT
4
5
6
BURNER/BLOWER MOTOR
4
120V, 50/60 HZ POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION (15 AMP TYPE SC
FUSE OR EQUIVALENT FAST BLOW FUSE) AS REQUIRED.
DO NOT CONNECT ANY WIRES TO UNUSED TERMINALS.
SEE FLAME DETECTOR SPECIFICATIONS FOR CORRECT
DETECTOR WIRING.
1
2
3
7
4
5
6
PROGRAMMED ON SETUP USING S7800A1142 DISPLAY.
PURGE TIME DEPENDS ON WHICH ST7800 IS INSTALLED.
PFEP
10 SEC.
(4 SEC. IF
JR1
CLIPPED
LIMITS AND BURNER CONTROLLER CLOSED
6
TO
L1
7

Honeywell RM7898A1000 Specifications

General

Brand	Honeywell
Model	RM7898A1000
Category	Control Unit
Language	English