Orion System Digital Room v.1 - Manual (Page 11)

Operator Interface
DIGITAL ROOM SENSOR
11
Appendix
Connecting a Remote Sensor
NOTE: The following directions are for the OE217-00 Space
Temperature Only E-BUS Digital Room Sensor. If you
are using an OE217-01 Space Temperature and Humidity
Model, please contact WattMaster Technical Support for
instructions.
Sometimes due to the requirements of a job, the sensor must be located
outside the conditioned space due to special requirements such as
hospital surgical room codes, security, or tampering considerations.
In these cases, the Digital Room Sensor can be mounted in a different
room and have a remote sensor connected to it. Typically, this would be
Figure 19: Attaching a Remote Sensor
MI CR
O
C H IP
PI C 24 H J
25 6G P2 06
MI CR
O
C H IP
PI C 24 H J
25 6G P2 06
OE217-00 Digital Room Sensor Back View
OE217-00 Digital Room Sensor Back View
Sensor Shown With
Back Cover Removed
Sensor Shown With
Back Cover Removed
Cut Wire Loop As Shown.
Make Sure That The Wires
Are Cut Close Enough To
The Circuit Board So They
Can’t Touch Each Other.
Mount Sensor In Return Air
Duct As Shown. Route Wires
To Digital Room Sensor
Location And Connect To
Terminal Block.
Return
Air Duct
OE231 Return Air
Temperature Sensor
a Return Air Duct Temperature Sensor. Usually, you will be using the
OE231 Return Air Temperature Sensor, but you can also use any Type III
10K Ohm Thermistor Sensor.
To connect a remote sensor to the Digital Room Sensor, you must fi rst
remove the Digital Sensor’s back cover. You will see a loop of wire hang-
ing off of the sensor circuit board. See Figure 19. This is the external
thermistor loop wire. Clip the external thermistor loop wire so that the
sensor will read the remote temperature input. Be sure to cut the ends
of the wire close to the circuit board so that the sensor loop wire ends
won’t short between each other. The remote sensor then wires to the
remote sensor terminal block on the back of the Digital Room Sensor.
If using the WattMaster OE210 type Space Sensor as the remote sensor,
you must clip off the yellow C1 capacitor from the back of the OE210.
Be sure to cycle power to begin reading the remote sensor.