Safety Shutdown - Honeywell 2RM7800L1087 Installation Instructions Manual

RM7800L1087; RM7840G1022,L1075; EC7840L1014 RELAY MODULES WITH VALVE PROVING
Edit:
-
Fig. 23. Confirm Postpurge time.
20. Press Enter.
Edit:
-
Fig. 24. Confirm correct/incorrect screen.
21. Press Enter.
22. Press the down arrow to confirm the correct postpurge
time. "Getting Data" will be displayed until the screen in
Fig. 20 appears.
Edit: -
Fig. 25. Setup Done screen.
23. Press and hold the relay module RESET button for five
seconds to program the Valve Proving setup into the
relay module.
The Release Reset screen will appear on the KDM.
Edit: -
Fig. 26. Release Reset screen.
66-1162—2
+
M22674A
+
M22671B
+
M22676B
+
M22765B
Once the system is in operation, the settings of the Valve
Proving and Postpurge can be viewed in Diagnostics, using
your S7800 Keyboard Display Module (KDM).
Future changes to the Valve Proving and Postpurge features
are still possible. With the relay module in standby, scroll to
the Setup line and enter the password to change the settings.

SAFETY SHUTDOWN

Safety Shutdown (Lockout) occurs if any of
the following occur during the indicated
period:
1. Anytime:
a. Purge card is not installed or removed.
b. Purge card is bad.
c. Configuration jumpers are changed (after 200 hours
of operation).
d. Internal system fault.
e. Demand present at terminals 6 and 17 at the same
time.
f. Failure of the Valve Proving test.
g. Demand at terminal 17 and device at default "Never."
2. INITIATE Period:
a. AC line power errors occurred, see Operation
section.
b. Four minute INITIATE period has been exceeded.
3. STANDBY Period:
a. Flame signal is present after 240 seconds.
b. Pre-Ignition Interlock is open an accumulative time
of 30 seconds.
c. Interlock check feature is enabled (L only with JR3
clipped) and the Interlock String (including airflow
switch) is closed for 120 seconds with controller
closed.
d. Ignition/pilot valve/intermittent pilot valve terminal is
energized.
e. Main valve terminal(s) energized.
f. Internal system fault occurred.
4. PREPURGE Period:
a. Pre-Ignition Interlock opens anytime during
PREPURGE period (except during VP test).
b. Flame signal is detected after first ten seconds
during PREPURGE (RM7800L/40L, EC7840L).
c. High Fire Switch fails to close within four minutes
and fifteen seconds after the firing rate motor is
commanded to drive to the high fire position at the
start of PREPURGE (RM7800L/40L, EC7840L).
d. Low Fire Switch fails to close within four minutes
and fifteen seconds after the firing rate motor is
commanded to drive to the low fire position at the
end of PREPURGE.
e. Running Interlock does not close within 30 seconds
(RM7840G).
f. Lockout Interlock does not close within 10 seconds
(RM7800L/40L, EC7840L).
g. Lockout Interlock opens during PREPURGE
(RM7800L/40L, EC7840L).
h. Ignition/pilot valve/intermittent pilot valve terminal is
energized.
i. Main valve terminal is energized (except during
Valve Proving testing).
j. Internal system fault occurred.
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