Honeywell RM7895A1014 Installation Instructions Manual page 11

SEQUENCE
STATUS
LED PANEL
RESET
BUTTON
DUST
COVER
Fig. 4. RM7895A,B,C,D/EC7895A,C; RM7896A,B,C,D Relay Module, exploded view.
2. STANDBY PERIOD
a. Airflow lockout feature is enabled and the airflow
switch does not close after ten seconds or within
the specified purge card timing.
b. Flame signal is detected after 30 seconds.
c. Ignition/pilot valve/intermittent pilot valve ter-
minal is energized.
d. Main valve terminal is energized.
e. Delayed main valve terminal is energized
(RM7895C,D).
f. Internal system fault occurred.
g. Purge card is removed.
h. Purge card is bad.
3. PREPURGE PERIOD
a. Airflow lockout feature is enabled and the airflow
switch opens.
b. Ignition/pilot valve terminal is energized.
c. Main valve terminal is energized.
d. Delayed main valve terminal is energized
(RM7895C,D).
e. Internal system fault occurred.
f. Purge card is removed.
g. Purge card is bad.
h. Flame signal is detected.
4. PILOT FLAME ESTABLISHING PERIOD (PFEP)
RM7895A,B,C,D/EC7895A,C; RM7896A,C,D 7800 SERIES RELAY MODULES
WIRING
SUBBASE
RUN/TEST (C,D ONLY)
SWITCH
RELAY
MODULE
CONFIGURATION
JUMPERS
PURGE
TIMER
POWE R
PILOT
FLAM E
MAIN
ALARM
RESE T
11
SUBBASE Q7800A1005/U SHOWN
H O N E Y W E LL
a. Airflow lockout feature is enabled and the airflow
switch opens.
b. No flame signal at end of PFEP.
c. Ignition/pilot valve/intermittent pilot valve ter-
minal is not energized.
NOTE: For the RM7895C1020 and RM7896C1036, during
the first 8 seconds of PFEP, when a flame signal is
detected, terminal 10 is de-energized. If the flame
signal is lost, terminal 10 will re-energize.
d. Main valve terminal is energized.
e. Delayed (second stage) main valve terminal is
energized (RM7895C,D/EC7895C; RM7896C,D).
f. Internal system fault occurred.
g. Purge card is removed.
h. Purge card is bad.
5. MAIN FLAME ESTABLISHING PERIOD (MFEP)
(RM7895C, RM7896C,D; EC7895C)
a. Airflow lockout feature is enabled and the airflow
switch opens.
b. Ignition terminal is energized.
c. Ignition/pilot valve terminal is not energized.
d. Main valve terminal is not energized.
e. Delayed main valve terminal is energized.
f. No flame signal at end of Flame Failure
Response Time.
CAPTIVE
MOUNTING
SCREW
FLAME
AMPLIFIER
32-00156—01