Orion-system PREHEAT-X Manual de usuario Pagina 11

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SEQUENCE OF OPERATIONS
11
PREHEAT-X Technical Guide
Emergency Shutdown
The Emergency Shutdown input must always be used and wired
as a 24 VAC normally closed contact. If an Emergency Shutdown
occurs, and that contact opens:
All outputs will be immediately de-energized.
An alarm will be generated.
High Leaving Air Temperature Alarm
If the Leaving Air Temperature is above the LAT High
Temperature Alarm Limit for more than the Alarm
Delay all heating outputs will be de-energized
immediately.
An alarm will be generated.
A manual reset will be required.
Low Leaving Air Temperature Alarm
If the Leaving Air Temperature is below the LAT Low Temperature
Alarm Limit for more than 2 minutes, the heat will remain on but
an alarm will be generated.
Operation Modes
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