Orion-system PREHEAT-X Manuel d'utilisateur télécharger pdf (Page 11)

SEQUENCE OF OPERATIONS

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

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 27 28

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Orion-system PREHEAT-X Manuel d'utilisateur Page 11