Trane Tracer VV550, Tracer VV551 Installation Manual

Tracer™ Controls

Tracer VV550/551 VAV Controllers

October 2005

CNT-PRC003-EN

®

Introduction

Tracer VV550 and Tracer VV551 variable
air volume (VAV) controllers provide
single-duct digital control for VAV boxes.
They support the following VAV control
sequences:

• Space temperature control

• Flow tracking

• Ventilation flow control

The Tracer VV550 VAV controller is
available factory-installed on Trane
VariTrane VAV boxes (Figure 1). The
Tracer VV551 VAV controller is available
for field installation for a variety of VAV
applications (Figure 2).

Figure 1. Tracer VV550 controller

Figure 2. Tracer VV551 controller
(uses same board as Tracer VV550)

Because the Tracer VV550 and Tracer
VV551 VAV controllers use the same
logic controller, both offer the same
wide range of application and control
flexibility. The Tracer VV551 VAV
controller includes additional labor­saving packaging features for field­installed applications.

Tracer VV550/551 VAV controllers can
operate as part of a Trane Integrated
Comfort™ system (ICS), as part of a
building management system from
another manufacturer, or as a
standalone device.

When it is part of a Trane ICS, a Tracer
VV550/551 VAV controller enables the
building automation system (BAS) to
perform functions such as scheduling,
trending, alarming, remote
communications, and VAV air system
(VAS) coordination. The controller
communicates with a Tracer Summit
BAS over the LonTalk

®

communications
link. The controller can also
communicate with other building control
systems that are compliant with the
LonMark® Space Comfort Controller
(SCC) profile.

Tracer VV550/551 VAV controllers can be
configured using the Rover™ service
tool. They have the following inputs and
outputs (Figure 3 on page 6):

Analog inputs:

• Space temperature (10 kΩ thermistor)

• Space setpoint (1 kΩ potentiometer)

• Primary/discharge air temperature

(10 kΩ thermistor)

• Primary air flow

Binary inputs:

• Occupancy or generic

Binary outputs:

• Air valve close

• Air valve open

•Heat 1

•Heat 2

• Heat 3 or fan On/Off

2 CNT-PRC003-EN

© 2005 American Standard All rights reserved

™ ® The following are trademarks or registered trademarks of their respective compa­nies: ICS, Rover, Tracer, Tracer Summit, and Trane of American Standard Inc.; LonMark,
LonTalk, and LonWorks of the Echelon Corporation.

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2

Features and benefits . . . . . . . . . . . . . . . . 4

Automatic calibration. . . . . . . . . . . . . . . . . . . . . . . . . 4

Ventilation flexibility . . . . . . . . . . . . . . . . . . . . . . . . . 4

Flow tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Ventilation flow control with tempering . . . . . . . . . 4

Local versus remote reheat flexibility . . . . . . . . . . . 4

Occupied and unoccupied operation . . . . . . . . . . . . 4

Timed override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Service pin from the Trane zone sensor . . . . . . . . . 4

Auto-commissioning sequence . . . . . . . . . . . . . . . . 5

Manual test function . . . . . . . . . . . . . . . . . . . . . . . . . 5

Drive minimum and maximum from zone sensor . 5

Trane controller compatibility. . . . . . . . . . . . . . . . . . 5

Interoperability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

®

Wiring diagram for Tracer VV550/551 VAV

controllers. . . . . . . . . . . . . . . . . . . . . . . . . . 6

Network architecture . . . . . . . . . . . . . . . . . 7

Zone sensor options . . . . . . . . . . . . . . . . . 8

Dimensions and specifications . . . . . . . . . 9

Power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . 9

Operating environment . . . . . . . . . . . . . . . . . . . . . . . 9

Storage environment . . . . . . . . . . . . . . . . . . . . . . . . . 9

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Weight with enclosure (Tracer VV551) . . . . . . . . . . . 9

Analog inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Binary input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Binary outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Agency listings/compliance. . . . . . . . . . . . . . . . . . . . 9

Data lists . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CNT-PRC003-EN 3

®

Features and benefits

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

sensor for demand-controlled

2

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 stand­alone 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 after­hours 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.

4 CNT-PRC003-EN