Mounting Location; To Wire And Mount The Co2/Temperature Sensor - Carrier SPS Installation Manual

Mounting location

This sensor must be placed in an area that is representative of the conditional space or zone.
Wall mounting
Mount the sensor:
• On an internal wall near a return air grille or duct
•
At least 3 feet (.9 m) from any corner, 2 feet from an open doorway and 4 to 6 feet from the floor
•
Proximal to the wiring egress on the wall
•
Where the temperature operating limits are 32° to 122°F
Do not mount the sensor:
•
Close to a window, on an outside all, or next to a door leading to the outside
• Close to or in direct airflow of areas such as open windows, drafts or over heat sources
• In areas with poor circulation
•
Where it may be exposed to direct occupant breathing such as near water coolers or coffee machines
NOTE The sensor mounting plate accommodates the NEMA standard 4x2-in. electrical box. However, the
sensor can be mounted directly on the wall surface if local codes permit.

To wire and mount the CO2/Temperature sensor

Disassemble the sensor into these three parts: sensor cover, sensor base and mounting plate.
1
Feed the wires from the electrical box through the opening in the center of the sensor mounting plate.
2
Use the 2 mounting screws provided to attach the mounting plate to the electrical box.
3
Run the wiring through the wire hole in the sensor base. See diagram below.
4
Reattach the sensor's base to the mounting plate, inserting the top first.
5
Separate the wires into two bundles: one bundle for the CO
6
for the temperature sensor and CCN wires (J5 and J6).
Use the diagram below to connect the wiring to the sensor's J1, J4, J5 and J6 terminals.
7
NOTE On a large number of sensors, J6 was labeled incorrectly with CCN+ and CCN-. Ignore the labels on
the circuit board and use the wiring diagram in this book.
Push excess wire back through the hole.
8
Reattach the sensor's cover to the base and mounting plate.
9
10 Turn the two Allen screws counterclockwise to secure the cover to the mounting plate.
11 Wire the sensor to the Open controller. See the controller's Installation and Startup Guide for details.
Carrier Sensors
CO2/Temperature sensor
sensor wires (J4 and J1), the other bundle
2
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