Orion System E-BUS Digital Room v.1 - Manual (Page 13)

Operator Interface
E-BUS DIGITAL ROOM SENSOR
13
E-BUS Digital Room Sensor
Wall-Mounted
E-BUS CO Sensor
2
EBC E-BUS Cable
EBC E-BUS Cable
Display Override
OVERRIDE ALARM
NOTE: Mount
Both Sensors At
Least 5 Feet Above
Floor. The Digital
Room Sensor
Connects To The
Sensor. CO
2
VCB-X Controller
24 VAC POWER
ONLY
WARNING!
POLARITY MUST
BE OBSERVED
OR THE
CONTROLLER
WILL BE
DAMAGED
AO2
AO3
TR1
= SC
= DIGITAL CO
TRIAC OUTPUT
LED N M
NORMAL
SAT FAIL
OAT FAIL
SPC FAIL
MECH COOL FAIL
MECH HEAT FAIL
FAN PROOF FAIL
DIRTY FILTER
EMERGENCY SHUTDOWN
LOW SAT 1
HIGH SAT 2
CONT. TEMP COOL FAIL 3
CONT. TEMP HEAT FAIL 4 4
PUSH BUTTON OVR 1 5
OUTPUT FORCE ACTIVE 0 6
WattMaster Label
#LB102093-01-A
Rev.: 1C
E-BUS
EXPANSION
E-BUS
EXPANSION
24 VAC
INPUT
=
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 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.
Appendix - Wall Mounted 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.
Revised 05/01/12