Removal and replacement procedures 58
3.
Reconnect power to the LED light.
Sensors
The HP POD 20c has several temperature sensors that monitor the environmental factors and communicate
data back to the ECS.
Drain pan sensors
The HP POD 20c includes three heat exchanger condensate drains. One drain pan sensor is located in the
drain tray below each set of heat exchangers.
Three sensors are also located in the chilled water supply and return header drain pans, one in each of the
corresponding cooling zones.
Removing the chilled water supply and return header drain pan sensor
1.
Follow the sensor wire to the associated satellite box. Disconnect the wire from the satellite box terminal
and note the wire location.
2.
Pull the wire through from the satellite box to the sensor location, and then remove the sensor.
Replacing the chilled water supply and return header drain pan sensor
1.
Position the sensor in the main header drain pan.
2.
Route the wire to the associated zone satellite box.
3.
Connect the sensor wire to the appropriate port on the satellite box terminal.
