CenCon
46
ALARM DESCRIPTION
Drain Sensor Failure
Sensor reads <30°F or >212°F for more than 10 seconds.
Tank High Pressure Overflow
Unexpected hot water reading at drain sensor. Drain temperature has
been >110°F after the burner has been on for more than 5 minutes.
Fill Valve Stuck Open
Unexpected hot water reading at drain sensor. Drain temperature is
>110°F, both LWP and FWP probes are covered, and SH status is OFF.
Hot Drain Lockout
Drain tempering valve appears to not function. Drain temperature senses
>130°F for more than 1 minute. Attempts to drain 15 times, then locks
out for 2 hours before retrying drain attempt.
Foaming Alarm
If during steam production the low water probe (LWP) is uncovered in the
first 2 minutes of the fill valve being turned on, after the burner has been
on for longer than 10 minutes.
Water Probe Sequence
During fill, if the FWP is made before the LWP.
Failure to Drain
The drain valve has been enabled for more than 1 hour and the LWP is
still covered.
Tank High Limit
Tank high limit temperature switch open. Manual reset.
Failed Water Supply
On initial fill, if the LWP is not covered within the full fill time.
During normal steam production, alarm occurs if FWP is not covered after
5 minutes of fill command.
