Remote Rack Sensor Wiring
141 Liebert
®
CRV
™
13.2 Set 2T Rack Sensor Identities-DIP Switch settings
1. Confirm the DIP switches are set correctly for 2T sensors numbered 1, 2 and 3.
2. If additional sensors are to be connected to a cooling unit:
a. Apply numbered stickers to the sensor housings, corresponding to sensor chain position.
b. Based on the sensor number, use the included DIP switch tool to set the DIP switches
according to the table above. If you are having difficulty setting switches through the opening
in the housing or if the hole is not present, you may open the case by removing the three
Phillips head screws. Reassemble housing once complete.
Figure 124 Setting DIP switches for 2T sensors
Table 36 DIP switch settings
2T Temperature and
Humidity Sensor
DIP Switch Position
Factory-Set
to Terminated12345678
Included with Liebert CRV
Sensor # 1 Off Off On Off
On Off Off Off
-
Sensor # 2 On Off On Off -
Sensor # 3 Off On On Off Yes
Optional 2T Rack Sensors
Sensor # 4OnOnOnOff
On Off Off Off
-
Sensor # 5 Off Off Off On -
Sensor # 6 On Off Off On -
Sensor # 7 Off On Off On -
Sensor # 8 On On Off On -
Sensor # 9 Off Off On On -
Sensor # 10 On Off On On -
NOTE
Use a field-supplied DIP switch tool (or similar non-conductive tool) to move the DIP switches.
Do not insert any metal object into the sensor case.
Non-Conductive
DIP Switch Tool
(field-supplied)
2T Sensor Terminal
Housing DIP switch hole
2T Sensor Housing Case Opened
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