To Wire The T55 Sensor To The Controller; To Wire The Supply Air Temperature Sensor To The Controller - Carrier VAV Zone II Installation And Startup Manual

To wire the T55 sensor to the controller

Part #33ZCT55SPT
This wall-mounted sensor monitors space temperature and can be used instead of a ZS or wireless sensors.
Strip the outer jacket from the cable for at least 3 inches (7.62 cm). Strip .25 inch (.6 cm) of insulation from
1
each wire. Cut the shield and drain wire from the cable.
Wire the sensor to the controller, attaching the red wire to the T55 (Opt) terminal and the black wire to the
2
Gnd terminal. See diagram below.
Verify that the T55 (Opt) jumper is in the Thermistor position.
3

To wire the Supply Air Temperature sensor to the controller

Part #33ZCSENSAT
Each VAV Zone II requires that a temperature sensor be installed in the supply air stream. Mount the SAT sensor
at least 2 feet downstream from a hot water or steam coil, or at least 4 feet downstream from an electric heating
coil.
Wire the sensor to the controller. See diagram below.
VAV Zone II Controllers
Installation and Start-up Guide
23
Installing the VAV Zone II
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