17
Fig. 19 — Communication Bus Wiring to Fan Coil Zone Controller
Warm
Cool
Warm
Cool
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
2 COND TWISTED
CABLE OR 3 COND
CABLE (TEMP
SENSOR WIRING) (TYP)
SPACE
TEMPERATURE
SENSOR
DISTANCE GREATER
THAN 50 FT.
CCN COMM BUS
TYPICAL
FAN COIL UNIT
FAN COIL
ZONE
CONTROLLER
50 FT. MAXIMUM
Wiring when distance between fan coil controller and space temperature sensor is 50 feet or less
Wiring when distance between fan coil controller and space temperature sensor is greater than 50 feet
