Orion System OE217-00 - Manual (Page 35)

Form: AAON-OE256-05—EBUS-CO2Sensor-1A.doc
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Description
The Wall Mounted E-BUS CO
2
Sensor (Orion Part No.
OE256-05; AAON Part No. V09310) is used in con-
junction with the VCB-X Controller (Orion Part No.
OE335-23-VCB-X; AAON Part No. V04740) to monitor
and control CO
2
levels in the building environment.
Some typical applications are:

Demand Ventilation Control

Controlling ventilation in a building where the oc-
cupancy varies frequently

Controlling ventilation based on CO
2
levels to
ensure excess outside air is not causing energy
waste

To ensure good air distribution throughout build-
ing zones
The OE256-05 is used for monitoring room CO
2
levels
and is designed for permanent wall mounting in the
conditioned space. It connects to the VCB-X using an
E-BUS cable. It can be daisy chained with the 217-02
E-BUS Digital Room Temperature Sensor for applica-
tions requiring both a room CO
2
sensor and room
temperature sensor.
The OE256-05 CO
2
Sensor uses non-dispersive infra-
red (NDIR) technology. The CO
2
Sensor’s accuracy is
 50 ppm @1000 ppm or 2% of the measured value
and has a measurement range of 0-2000 ppm.
Mounting
The OE256-05 CO
2
Sensor utilizes a sub-base mount-
ing plate with either terminal blocks or E-BUS connec-
tion, providing for quick and easy mounting and wiring.
The wall-mounted sensor’s sub-base is compatible
with standard junction boxes. A locking screw secures
the assembly to the wall.
Technical Data OE256-05 – CO
2
Sensor
Input Power 12-34 VDC Power Consumption 30 mW Maximum Average
1.25 W Peak Power
Operating Temperature 14
 to 122 F Operating Humidity 5-95% RH Non-Condensing
Sample Method Diffusion Or Flow—through
50-100 ml/min
Measurement Range 0 to 2000 ppm
Sensitivity <
20 ppm Resolution 1 ppm
Analog Output 0-5 VDC Communications E-BUS
One Year Warranty WattMaster reserves the right to change specifications without notice
OE256-05 Wall Mounted E-BUS CO
2
Sensor
4.54
2.80 0.96
0.80