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VCCX2 Controller Technical Guide
E-BUS Return Air Temperature and
Humidity Sensor
The ASM01840 E-BUS Return Air Temperature and Humidity
Sensor connects to the VCCX2 Controller. A 50 ft. E-BUS cable
(provided) plugs into the sensor’s attached 3 ft. cable and then
plugs into the E-BUS port of the VCCX2 Controller or other
E-BUS expansion board. The sensor should be mounted in the
upright position as shown in an area that is protected from the
elements and direct sunlight. See
Figure 18, this page
for details.
Figure 18: E-BUS Return Air Temperature and Humidity Sensor Wiring
50 ft. E-BUS cable
(provided)
Note:
Connect the sensor to the
VCCX2 Controller using the
provided E-BUS cable.
WIRING
E-BUS Return Air Temperature and Humidity Sensor
CAUTION:
Be sure to mount the Outdoor Air
Temperature Sensor in the upright position,
in an area that is not exposed to direct
sunlight, and is protected from the elements.
The shaded area under the HVAC unit rain
hood is normally a good location. Unused
conduit opening(s) must have closure plugs
installed and must be coated with sealing
compound to provide a rain-tight seal. Water
can damage the sensor.
NOTE:
If using multiple E-BUS Sensors or Modules, the
E-BUS Hub (ASM01635 or G033970) or E-BUS
Adapter Board (ASM01878) may be required.