Sterling SDFI, Installation And Maintenance Instructions Manual

Page: 11 / 36

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SEQUENCE
STATUS
LEDs
RESET
PUSHBUTTON
FLAME
SIMULATOR INPUT
FLAME CURRENT
TEST JACKS
RUN/TEST SWITCH
(RM7895C,D;
EC7895C;
RM7896C,D)
CAPTIVE
MOUNTING
SCREW
PLUG-IN
PURGE
CARD
DUST
COVER
RELAY
MODULE
FLAME
AMPLIFIER
M7552A
RUN/TEST SWITCH
(EC7895C; RM7895C,D; RM7896C,D)
SELECTABLE CONFIGURATION JUMPERS
M7553A
HONEYWELL
POWER
PILOT
FLAME
MAIN
ALARM
RESET
DUST
COVER
PURGE
TIMER
WIRING
SUBBASE
CAPTIVE
MOUNTING
SCREW
RUN/TEST (C,D ONLY)
SWITCH
CONFIGURATION
JUMPERS
RELAY
MODULE
SEQUENCE
STATUS
LED PANEL
RESET
BUTTON
FLAME
AMPLIFIER
BURNER CONTRO
L
M15122
Figure 4 - RM7895A,B,C,D/EC7895A,C; RM7896A,B,C,D Relay Module Exploded View
SECTION VII - TROUBLE SHOOTING
continued
SETTINGS AND ADJUSTMENTS
Selectable Site-Configurable Jumpers
The relay module has three site-configurable jumper
options, see Fig. 6 and Table 7. If necessary, clip the
site-configurable jumpers with side cutters and remove
the resistors from the relay module.
SERVICE NOTE: Clipping and removing a site-
configurable jumper enhances the level of safety.
Figure 5 - Sequence Status LEDs
Figure 6 - Selectable Site-Configurable Jumpers
Table 7 - Site-Configurable Jumper Options
Jumper
Number
Description Intact Clipped
JR1*
Pilot Flame
Establishing Period (PFEP)
10 Seconds 4
Seconds
JR2 Flame Failure Action Recycle Lockout
JR3
Airflow Switch (ILK)
Recycle Lockout
Failure
IMPORTANT: Clipping and removing a jumper after
200 hours of operation causes a nonresettable Fault
110. The relay module must then be replaced.