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Before wiring the CCN connection, refer to the Connect to
the CCN Communication Bus section on page 26, for commu-
nication bus wiring and cable selection. The cable selected
must be identical to the CCN communication bus wire used for
the entire network.
The other end of the communication bus cable must be con-
nected to the remainder of the CCN communication bus. If the
cable is installed as a T-tap into the bus, the cable length cannot
exceed 100 ft. Wire the CCN service jack of the sensor in a
daisy chain arrangement with other equipment. Refer to the
Connect to the CCN Communication Bus section, page 26, for
more details.
Warm
Cool
Warm
Cool
100 FT. MAXIMUM
AIR TERMINAL
UNIT (TYP)
ZONE
CONTROLLER
(TYP)
2 COND TWISTED
CABLE OR 3 COND
CABLE (TEMP
SENSOR WIRING) (TYP)
CCN COMM BUS
SPACE
TEMPERATURE
SENSOR
3 COND COMM CABLE (TYP)
Warm
Cool
Warm
Cool
AIR TERMINAL
UNIT (TYP)
ZONE
CONTROLLER
(TYP)
2 COND TWISTED
CABLE OR 3 COND
CABLE (TEMP
SENSOR WIRING) (TYP)
SPACE
TEMPERATURE
SENSOR
DISTANCE GREATER
THAN 100 FT.
CCN COMM BUS
Fig. 14 — Communication Bus Wiring to Zone Controller
Wiring when distance between zone controller and space temperature sensor is greater than 100 feet
Wiring when distance between zone controller and space temperature sensor is 100 feet or less