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VAV-PRC003-EN 11
Features and
Benefits
Figure 10. DDC zone sensors Figure 11. DDC zone sensor with LCD
DDC Zone Sensor
The direct digital control (DDC) zone
sensor is an uncomplicated, reliable
electro-mechanical room sensor. No
programming is required and most
sensors contain an internal
communications jack.
Models are available with combinations
of features such as override (on-cancel)
buttons and space-mounted setpoint.
Four sensor variations are available:
• Sensor only (no communications jack)
• Sensor with override buttons
• Sensor with temperature setpoint only
• Sensor with temperature setpoint and
override buttons
DDC Zone Sensor with LCD
The DDC zone sensor with LCD (liquid
crystal display or digital) is compatible
with VariTrane VAV and VariTrac
controllers.
Zone Sensors
Digital Zone Sensor Summary
• Displays setpoint adjustment and space
temperature in °F or °C
• Simple, two-button control of space
setpoint
• Setpoint control and room temperature
display can be optionally disabled
• Includes button for timed override and
a cancel feature for after-hours system
operation
• An easily accessible communications
jack is provided for Trane portable edit
terminal devices
• Nonvolatile memory stores last
programmed setpoints
• For field balancing, maximum and
minimum airflow or position can be
overridden from the sensor