Installing the VVT Zone II
VVT Zone II Controller
CARRIER CORPORATION ©2019
Installation and Start-up Guide
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20
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.
1
Strip the outer jacket from the cable for at least 3 inches (7.62 cm). Strip .25 inch (.6 cm) of insulation from
each wire. Cut the shield and drain wire from the cable.
2
Wire the sensor to the controller, attaching the red wire to the
T55 (Opt)
terminal and the black wire to the
Gnd
terminal. See diagram below.
3
Verify that the
T55 (Opt)
jumper is in the
Thermistor
position.
To wire the Supply Air Temperature sensor to the controller
Part #33ZCSENSAT
Each VVT 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.
Summary of Contents for VVT Zone
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