AAON AA-EBUS-DRS-TGD-01K Technical Manual - page 13
E-BUS Digital Room Sensor Technical Guide
APPENDIX
13
E-BUS Digital
Room Sensor
Wall-Mounted
E-BUS CO Sensor
2
EBC E-BUS Cable
EBC E-BUS Cable
NOTE: Mount
Both Sensors At
Least 5 Feet Above
Floor. The Digital
Room Sensor
Connects To The
Sensor.
CO
2
VCCX2 Controller
Display
Override
OVERRIDE
ALARM
24 VAC POWER
ONLY
WARNING!
POLARITY MUST
BE OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
WattMaster
Overlay
#S
000079
Rev.: 1A
W
GND
DUCT
STATIC
+24
VA
C
DUAL
EBUS
Figure 19: OE256-05 – Wall Mounted E-BUS CO
2
Sensor Wiring
E-BUS CO
2
Wall Mounted Sensor
The OE256-05 Wall Mounted E-BUS CO
2
Sensor is used to monitor CO
2
levels in the space served by the HVAC unit. The CO
2
Sensor connects to
the VCC-X / VCCX2 or VCB-X Controller with an EBC E-BUS cable.
It can be daisy-chained with the E-BUS Digital Room Sensor ( OE217-
02, OE217-03, OE217-04) for applications requiring both a room CO
2
sensor and room temperature sensor.
Wall Mounted E-BUS CO
2
Sensor Wiring
It should be mounted at approximately 5 Ft. above the fl oor on the wall
in an area that does not have drafts or is exposed to direct sunlight. See
Figure 19 for wiring details and installation notes.
NOTE: The OE265-07 Duct Mounted E-BUS CO
2
Sensor can
be used if desired instead of the Wall Mounted E-BUS
CO
2
Sensor. However, the E-BUS Digital Room Sensor
does not directly connect to the Duct Mounted E-BUS
CO
2
Sensor. See the OE265-07 E-BUS CO
2
Sensor
Technical Guide for Duct Mounted E-BUS CO
2
Sensor
wiring details.