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VCCX2 Controller Technical Guide
Duct-Mounted E-BUS CO
2
Sensor
The ASM01831 Duct-Mounted E-BUS CO
2
Sensor with Remote
Pickup Tube is used for sensing the current CO
2
level in the
HVAC unit’s return air stream. This is useful when you want a
CO
2
reading in the area served by the HVAC unit or when you
don’t want a Wall-Mounted E-BUS CO
2
Sensor due to sensor
tampering concerns in the space.
The Duct-Mounted E-BUS CO
2
Sensor is comprised of the CO
2
Sensor, the AAON Aspiration Box Assembly, and a Remote
Pickup Tube.
The Duct-Mounted E-BUS CO
2
Sensor with Remote Pickup Tube
is designed to be mounted in the return air duct of the HVAC unit
and uses its integral aspiration box to sample the CO
2
level in the
duct. See
Figure 10, this page
for wiring and installation details.
NOTE:
If using multiple E-BUS sensors or modules, the
E-BUS Hub or Adapter Board may be required.
Note:
The Duct-Mounted E-BUS CO Sensor connects to the
VCCX2 Controller using an E-BUS cable of the required
length or the provided 10 ft. E-BUS cable.
2
10 ft. E-BUS cable
(provided)
E-BUS cable with
jack connection
ASM01831
Duct-Mounted
E-BUS CO Sensor
2
Figure 10: Duct-Mounted E-BUS CO
2
Sensor Wiring
WIRING
Duct-Mounted E-BUS CO
2
Sensor