Catalogue
8 UV-PRC004-EN
Features and Benefits
Controls
• This is the industry’s first solution that is factory-mounted, -wired, and -programmed for infinite
modulation of fan speed based on space loads, using the Tracer™ UC400.
• Auto Fan Speed control with the Tracer ZN520 ram
ps the fan speed up and down to meet space
loads.
• All controls are factory-mounted and tested to minimize field setup and improve reliability.
• Controls are wired with a 24-Vac transformer to
keep only a single source power connection
requirement to the unit.
• All wall-mounted zone sensors require only low voltage control wir
ing from the device to the
unit control box. (No line voltage.)
• The controller automatically determ
ines the unit’s correct operating mode (heat/cool) by
utilizing a proportional/integral (PI) control algorithm to maintain the space temperature at the
active setpoint, allowing total comfort control.
• Entering water temperature sampling elim
inates the need for inefficient bleedlines to sense
automatic changeover on two-pipe changeover units.
• The random start-up feature helps reduce electrical demand peaks by randomly staggering
m
ultiple units at start-up.
• Occupied/unoccupied operation allows the controller to utilize unoccupied temperature
setp
oints for energy savings.
• Warm-up and cool-down energy features are standar
d with Trane controls.
• To customize unit control, Tracer TU or Rover™ soft
ware will allow field modification of Tracer
ZN520 default settings. Tracer UC400 uses Tracer TU.
• Maximize system efficiency with free cooling economiz
ers and modulating valves on units with
Tracer ZN520 and Tracer UC400.
Trane offers a broad range in control packages to fit both retrofit and new applications. From the
field convertible end-device package to a complete building automation system, Trane controls
integrate the highest quality components within their unit ventilator to allow greater optimization
of the entire system.
Certification Standards
Comfort, energy and IAQ are all major issues that need to be considered in today’s school designs.
Therefore, it is important that designers of these systems have accurate information to make
Figure 3. Face and bypass damper
UV-PRC004-EN.book Page 8 Monday, February 4, 2013 11:01 AM