In the event that an emergency shut down is required, disconnect the Heater power
by detaching the MS Power Connector from the Heater, or disconnect the breaker
to the heater.
In the event of an emergency shut down, DO NOT TOUCH the Heater until it has
had sufficient time to cool. The Heat Exchanger remains at full temperature and
the Heater will not have completed a purge cycle, both of which will pose a safety
Note: The Heater will also automatically shut down if an unsafe operating condition
or component fault is detected.
3.4.1 Manual Shutdown
At any time during Start Up or Run Operation, the Heater may be manually shut down by moving the
START/OFF/RUN switch to the OFF position. When the switch remains in the OFF position for more than two
(2) seconds, the Heater will enter Purge Mode, and after four (4) minutes will automatically shut off. During a
Manual Shut Down the Heater's Diagnostic Display will report the Heater's Data Codes (ref. 3.6)
During Shut Down and Purge, the Heater will not respond to the Control Box Switch until the four (4) minute
Purge Cycle has been completed.
PURGING THE HEATER
To manually Purge the Heater, hold the Control Box Switch in the "Start" position for ten (10) seconds, and the let switch
go to "Off" position. The Heater will then commence a (4) minute Purge cycle while the Diagnostic Display Code shows
00 for one minute, then cycles through the Heater Data Codes (ref. 3.6).