Installation and Maintenance Manual

VAV-SVX07A-EN 11
General Information
Temperature Statistics
As a part of the standard application, both the VAS and Area applications calculate the minimum
space temperature (and source), maximum space temperature (and source), and the average space
temperature.
Tracer™ UC400 Controller Compatibility
The Tracer UC400 controller integrates with other BACnet systems and devices using BACnet MS/
TP. The Tracer UC400 controller provides standard BACnet objects (data points) that can be read
by and/or written to by other systems.
Note: See BACnet Integration Guide (BAS-SVP01*-EN) for more information on the Tracer UC400
controller interface to non-Trane systems.
Note: BACnet is the Building Automation and Control Network (BACnet and ANSI/ASHRAE
Standard 135-2004) protocol.
Table 3. Tracer UC400, Tracer VV550, and VAV 4.2 controller comparisons
Tracer UC400 VAV Tracer VV550/VV551 VAV 4.2
Supports BACnet. Supports LonTalk (Comm5).
Supports only Comm4 or Comm3 (VariTrac or
VariTrane).
Local CO
2
sensor input is available.
No local CO
2
sensor input. Uses only a
communicated value.
Local CO
2
sensor input is available.
Single star (*) initiates cool minimum
airflow override.
(a)
Single star (*) initiates cool minimum
airflow override.
(a)
Single star (*) initiates maximum flow override
after pressing the ON button. Override is held
until you move the thumbwheel.
Double star (**) initiates cool maximum
airflow override.
(b)
Double star (**) initiates cool maximum
airflow override.
(b)
Double star (**) initiates unoccupied override
after pressing the ON button. Override is held
until you move the thumbwheel.
Does not support VariTrac central control
panel (CCP2 and CCP3).
Does not support VariTrac central control
panel (CCP2 and CCP3).
Does support VariTrac CCP2 and CCP3.
Supports ventilation flow control. Supports ventilation flow control. Does not support ventilation flow control.
Supports flow tracking control. Supports flow tracking control. Does not support flow tracking control.
Supports enhanced ventilation control
sequences.
Supports enhanced ventilation control
sequences.
Does not support enhanced ventilation control
sequences.
Supports auto-commissioning sequence. Supports auto-commissioning sequence.
Does not support auto-commissioning
sequence.
Does not support zone sensor air balance
sequence.
Supports zone sensor air balance
sequence.
Does not support zone sensor air balance
sequence.
(a) 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.
(b) 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.