Honeywell RM7898A1000 User Manual

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

Honeywell RM7898A1000 Specifications

General

Brand	Honeywell
Model	RM7898A1000
Category	Control Unit
Language	English