14
b. Connect another wire from the cable (BLACK) to
the GND terminal on the controller. Connect the
other end of the wire to the remaining open termi-
nal on the SEN terminal block (COM on
33ZCT57SPT).
c. On 33ZCT56SPT and 33ZCT57SPT thermostats,
connect the remaining wire (WHITE/CLR) to the
T56 terminal on the controller. Connect the other
end of the wire to the SET terminal on the sensor.
d. In the control box, install a no. 10 ring type crimp
lug on the shield drain wire. Install this lug under
the mounting screw of the fan coil controller.
e. On 33ZCT56SPT thermostats install a jumper
between the two center terminals (right SEN and
left SET). See Fig. 17.
f. On 33ZCT57SPT thermostats, a separate
3-conductor, shielded cable is used to connect the
fan speed wiring. Connect the SPD terminal on the
thermostat to the SPEED terminal on the fan coil
controller. Use the white/clr wire. Connect the
COM terminal on the thermostat to the GND ter-
minal on the fan coil controller. Use the black
wire. Connect the 10V terminal on the thermostat
to the +10V terminal on the fan coil controller.
Use the red wire.
In the control box, install a no. 10 ring type crimp
lug on the fan speed wiring shield drain wire.
Install this lug under the mounting screw of the
fan coil controller.
Wiring the CCN Network Communication Service Jack —
See Fig. 16-18. To wire the service jack, perform the following:
1. Strip back the jacket from the CCN communication
cable(s) for at least 3 inches. Strip
1
/
4
-in. of insulation
from each conductor. Remove the shield and separate
the drain wire from the cable. Twist together all the
shield drain wires and fasten them together using an
closed end crimp lug or a wire nut. Tape off any
exposed bare wire to prevent shorting.
2. Connect the CCN + signal wire(s) (RED) to
Terminal 5.
3. Connect the CCN – signal wire(s) (BLACK) to
Terminal 2.
4. Connect the CCN GND signal wire(s) (WHITE/CLR)
to Terminal 4.
Before wiring the CCN connection, refer to the Connect the
CCN Communication Bus section on page 26, for communica-
tion bus wiring and cable selection. The cable selected must be
identical to the CCN communication bus wire used for the en-
tire 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 50 ft. No more than 10 T-taps are allowed per bus. Wire
the CCN service jack of the sensor in a daisy chain arrange-
ment with other equipment. Refer to the Connect to the CCN
Communication Bus section, page 26, for more details. See
Fig. 19.
Warm
Cool
Fig. 14 — Space Temperature Sensor
(P/N 33ZCT56SPT Shown)
NOTE: Dimensions are in inches.
Fig. 15 — Space Temperature Sensor and Wall
Mounted Humidity Sensor Mounting
