
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
Comentários a estes Manuais