Installation and Maintenance Manual

10 VAV-SVX07A-EN
General Information
Flash Download
The Tracer™ UC400 controller has been designed with flash memory. This allows the option of
upgrading the controller in the field (features, corrections to defects) without changing out the
controller.
Trane Controller Compatibility
The Tracer UC400 controller is a BACnet-compliant controller. As such, the controller is compatible
with the latest generation of Trane controls. This allows the Tracer UC400 controller to exist on the
same communication wire as the rest of our controllers and share data with them as required.
Drive Min and Max from Zone Sensor
When applied with a Trane zone sensor module that includes a thumbwheel setpoint or a LCD
display, the Tracer UC400 controller can easily be overridden to minimum and maximum flow. By
simply turning the thumbwheel to "*" or increasing the setpoint to maximum on display sensors
(end of range in one direction) the controller drives the air valve to the minimum cooling flow
setpoint. Similarly, turning the thumbwheel to the "**" or decreasing the setpoint to minimum on
display sensors (end of range in the other direction) the controller drives the air valve to the
maximum cooling flow setpoint.
Auto-commissioning Report (Tracer SC, Tracer TU)
Tracer SC and Tracer TU both include auto-commissioning reports that extracts and formats the
commissioning data for each VAV controller. This commissioning report is valuable both for the
installer and for the owner. The feature enables the system to be commissioned by exception -- a
benefit for the installer. The feature also can be used as validation -- valuable to the owner.
Simpler VAS
Tracer SC includes a new VAV Air System (VAS) specifically designed for both BACnet and LonTalk
VAV controllers. This new VAS was designed to be much simpler to understand and provides a
wizard to aid in first time setup of a VAS.
Static Pressure Optimization
As a part of the standard application, VAS calculates the duct static pressure setpoint based on the
VAV unit with a damper in the maximum flow position.
Ventilation Optimization
As a part of the standard application, the VAV system has the ability to calculate the ventilation
setpoint for the air-handling unit. In addition, the Tracer UC400 controllers have a ventilation ratio
limit feature that automatically increases airflow to maintain the required ventilation while
operating within system limits for outside air percent concentrations in the supply air stream.
CO
2
-Based Demand Control Ventilation
As a part of the standard application, the VAV system has the ability to calculate the ventilation
setpoint for the air-handling unit based on the CO
2
concentration in one or more spaces.
Ventilation Flexibility
Ventilation can be managed in the following ways:
• Fixed occupancy ventilation setpoint
• Scheduled (or otherwise calculated) ventilation setpoint
• Occupancy sensor to switch between normal and reduced ventilation
•CO
2
sensor for demand-controlled ventilation