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Frequently Asked Questions
Single Zone VAV
Building Life
Trane knows that careful
attention to the unique
needs of a building can
improve the life of
equipment, controls and
HVAC systems.
This solutions-oriented
commitment to delivering
exceptional performance
fosters an environment that
has a positive impact on the
lives of the people within it.
What is Single Zone VAV?
What are the
applications?
Why is it better than a
Constant Volume system?
How does Single Zone
VAV impact operating
cost?
How does a Single Zone
VAV system improve
comfort for building
occupants?
How can I get a Single
Zone VAV system?
Single Zone Variable Air Volume (VAV) is a high efficiency
system in which the motor speed and air volume automatically
adjust in response to a space’s needs.
Spaces where occupancy varies. Examples include classrooms,
office buildings, gymnasiums, dormitories and barracks.
Single Zone VAV offers substantial operating savings because
a high efficiency motor driven, variable fan speed can be the
most energy efficient way to address partial load conditions.
Single Zone VAV lowers operating costs because of the ef-
ficiency gains that come from the ability to operate at low
speeds for partial loads.
Temperature Stability – Variable speed technology gradu-
ally changes fan speed, which reduces temperature swings.
Quiet Operation – Variable speed units run at the lowest
fan speed necessary, and move up and down slowly between
speeds. This soft ramp capability means fewer audible changes
and a substantial 5 to 8 decibel reduction in system noise.
Dehumidification – Operating at lower speeds for more time
improves dehumidification, a key factor for IAQ and comfort.
Trane ECM terminal units integrated with the UC400
Unit Controller offers the only factory commissioned
Single Zone VAV solution in the industry.
T
T
EA
OA
RA
SA
space
Single Zone VAV System Configuration
In a Single Zone VAV system, the
temperature sensor in the zone is
used to vary the air temperature and
the air volume in order to maintain
the desired set point.