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Automatic calibration
Tracer VV550/551 VAV controllers
automatically calibrate the flow
transducer each time the box transitions
to the unoccupied state. This eliminates
the need to initiate/schedule calibration
for most installations. The exception is
24/7 sites, in which case the Tracer
Summit building automation system can
be used to initiate/schedule calibration.
Ventilation flexibility
Tracer VV550/551 VAV controllers can
manage ventilation 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
This flexibility gives owners and facility
managers an option to simply select one
of several effective solutions for
managing ventilation.
Flow tracking
Tracer VV550/551 VAV controllers can
easily be applied in flow tracking
applications. In a flow tracking
application, supply and exhaust boxes
are paired together for the purpose of
maintaining either positive or negative
space static pressure. This feature
allows the installer to quickly define the
relationship of the supply and exhaust
air boxes without the need for custom
programming.
Ventilation flow control
with tempering
Tracer VV550/551 VAV controllers have
been designed for ventilation flow
control applications. These applications
pair a fresh air unit or self-contained unit
with ventilation boxes to provide fresh
(tempered) air to a floor/area. With this
feature, the installer can quickly
configure the flow control boxes and set
up the system without the need for
custom programming.
Local versus remote reheat
flexibility
Tracer VV550/551 VAV controllers can be
configured to have local and/or remote
heat. This configuration flexibility
enables the controllers to be applied
across a broad range of VAV
applications.
Occupied and unoccupied
operation
The occupancy input on a Tracer VV550/
551 VAV controller works with a motion
(occupancy) sensor or a time clock to
determine the occupancy mode. An
occupancy request can also be
communicated from a building
automation system to determine the
mode of the controller. Whether stand-
alone or combined with a
communicated occupancy request, a
Tracer VV550/551 controller can be used
with an occupancy sensor to save
energy whenever a space is vacant.
Timed override
The timed override function for after-
hours operation allows users to request
unit operation by the touch of a button
on the unit zone sensor. Additionally,
users can press the CANCEL button at
any time to place the unit back into
unoccupied mode. This occupancy
feature minimizes energy use by running
the system only as scheduled or as
demanded after hours.
Service pin from the Trane
zone sensor
Certain installation scenarios require
access to the SERVICE button on the
controller. Access to this button typically
requires a ladder or a lift. The Tracer
VV550/551 VAV controller allows a
technician to replicate pressing the
SERVICE button by pressing the zone
sensor ON button. This feature
eliminates the need for accessing the
SERVICE button, saving the technician
time and energy.
Features and benefits
