Trane Tracer VV550 User manual

CNT-PRC003-EN
October 2005
Tracer™Controls
Tracer VV550/551 VAV Controllers

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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 labor-
saving packaging features for field-
installed 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 kΩthermistor)
• Space setpoint (1 kΩpotentiometer)
• Primary/discharge air temperature
(10 kΩthermistor)
• Primary air flow
Binary inputs:
• Occupancy or generic
Binary outputs:
• Air valve close
• Air valve open
•Heat1
•Heat2
• Heat 3 or fan On/Off
Introduction
© 2005 American Standard All rights reserved
™ ® The following are trademarks or registered trademarks of their respective compa-
nies: ICS, Rover, Tracer, Tracer Summit, and Trane of American Standard Inc.; LonMark,
LonTalk, and LonWorks of the Echelon Corporation.

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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

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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
2sensor 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

CNT-PRC003-EN 5
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Auto-commissioning
sequence
Tracer VV550/551 VAV controllers
provide an automatic commissioning
sequence. With a discharge air
temperature sensor installed, this
feature exercises the air valve, fan, and
heat in the box and records the
discharge air temperature before and
after the action. This allows the installer
to easily checkout the operation of the
box and commission by exception. The
data from this test is retained in the
controller for immediate reports or
retrieval at a later date (for comparison
purposes).
Manual test function
A Tracer VV550/551 VAV controller
includes a manual test button, which
enables a technician to easily exercise
the outputs of the controller. On
consecutive button presses, the
controller steps through a predefined
sequence that exercises all of the
controller outputs.
Drive minimum and
maximum from zone sensor
When applied with a Trane zone sensor
module that includes a thumbwheel
setpoint, a Tracer VAV VV550/551
controller can easily be overridden to
minimum and maximum flow. By simply
turning the thumbwheel to ∗, the
controller drives the air valve to the
minimum cooling flow setpoint.
Similarly, turning the thumbwheel to ∗∗
drives the air valve to the maximum
cooling flow setpoint. This simple
override feature is most useful during
the checkout and balancing phases of a
project.
Trane controller
compatibility
Tracer VV550/551 VAV controllers are
compatible with the latest generation of
Trane control products. The controllers
communicate over a LonTalk®
communications link. This allows Tracer
VV550/551 VAV controllers to exist on
the same communication wire as other
Trane controllers and to share data with
them as required.
Interoperability
Tracer VV550/551 VAV controllers are
designed with LonWorks®technology
and are LonMark®certified. They follow
the guidelines of the LonMark®Space
Comfort Controller (SCC) profile. As
such, the Tracer VV550/551 controllers
enable control system integration
flexibility.
Wiring diagram
See Figure 3 on page 6.
Wiring diagram 2

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Figure 3. Tracer VV550/551 wiring diagram
{
{
{
{
3
2
1
On
Cancel
Binary
input
Trane zone
sensor
In
Out
Rover
service tool
Analog inputs
Binary outputs
LonTalk®
communication
link
24V
GND
Wiring diagram for Tracer
VV550/551 VAV controllers

CNT-PRC003-EN 7
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Tracer VV550/551 VAV controllers can
operate on a Tracer Summit BAS, on a
building management system from
another manufacturer, on a peer-to-peer
network, or as stand-alone devices. The
Rover service tool can configure the
controllers at any accessible location on
the LonTalk®communication link (Figure
4).
Cancel
ON
85
*
80
75
70
65
60
55
50
**
oo
o
TM
ROVER
Cancel
ON
85
*
80
75
70
65
60
55
50
**
Cancel
ON
85
*
80
75
70
65
60
55
50
**
Figure 4. Network architecture with Tracer VV551 VAV controllers
Tracer Summit PC Workstation
LonTalk®
link
LAN (Ethernet or ARCNET)
Building
control unit
(BCU)
Building
control unit
(BCU) with
operator
display
Rover service tool
Zone
sensor
Tracer VV551 Tracer VV551 Tracer VV551
VAV box VAV box VAV box
LonTalk®
link
Zone
sensor
Zone
sensor
Network architecture

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Zone sensors are available in a variety of
configurations. Table 1 describes the
features of the five Trane zone sensors
that are available for use with Tracer
VV550/551 VAV controllers. The same
five sensors are shown in Figure 5.
Contact your Trane sales office about
other compatible zone sensors.
Figure 5. Zone sensors for use with Tracer VV550/551
GCC order
number
Zone Timed override
buttons
LCD Comm jack
Setpoint
thumbwheel
Temperature
sensor ON CANCEL
4190 1087 xx
4190 1088 xxx x
4190 1090 xxxx x
4190 1094 xx x
4190 1120 xxxxxx
4190 1088
4190 1090 4190 1094
4190 1087
4190 1120
Zone sensor options
Table 1. Zone sensors for use with Tracer VV550/551

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Power requirements
Supply: 18–32 Vac (24 Vac nominal) at
50/60 Hz
Operating environment
Temperature:
32 to 140°F (0 to 60°C)
Relative humidity:
From 5 to 95% non-condensing
Storage environment
Temperature:
-40 to 185°F (-40 to 85°C)
Relative humidity:
From 5 to 95% non-condensing
Dimensions
(See Figure 6 on page 10.)
Board only
Height: 4.5 in. (11.4 cm)
Width: 5.5 in. (13.8 cm)
Depth: 2 in. (5.1 cm)
With enclosure (VV551)
Height: 7.5 in. (13.7 cm)
Width: 6.5 in. (16.7 cm)
Depth: 5.5 in. (14.0 cm)
Weight with enclosure
(Tracer VV551)
With no actuator: 3.9 lb (1.77 kg)
With Belimo actuator: 5.0 lb (2.27 kg)
With Trane actuator: 5.2 lb (2.36 kg)
Analog inputs
Space temperature; thermistor:
10 kΩ@ 77°F (25°C)
From 14 to 122°F (-10 to 50°C)
Space setpoint; potentiometer:
1 kΩ
From 50 to 90°F (-10 to 32.2°C)
Primary/discharge air temperature;
thermistor:
10 kΩ@ 77°F (25°C)
From -40 to 212°F (-40 to 100°C)
Primary air flow; pressure transducer:
From 0 to 2 in. water (0 to 498 Pa)
Binary input
Occupancy or generic (dry contact)
Binary outputs
Air valve close:
maximum output rating: 12 VA
Air valve open:
maximum output rating: 12 VA
Heat stage 1:
maximum output rating: 12 VA
Heat stage 2:
maximum output rating: 12 VA
Heat stage 3/Fan on/off:
maximum output rating: 12 VA
Agency listings/compliance
Tracer VV550:
UL 873 and CSA C22.2 No. 24-93:
Temperature Indicating and Regulating
Equipment
Tracer VV551:
UL-916-PAZX—energy management
CUL-C22.2—signal devices—Canada
UL 94-5V (UL flammability rating for
plenum use)
FCC Part 15, Class A
CE marked
Dimensions and specifications

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Figure 6. Tracer VV551 dimensions
7.5 in. (19.2 cm)
6.5 in. (16.7 cm)
6.5 in. (16.7 cm)
7.5 in. (19.2 cm)
5.5 in. (14.0 cm)
Cover off
Cover on

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Data lists
Table 2 provides an input/output listing
for Tracer VV550/551 VAV controllers.
Table 3 provides the configuration
properties for the controller. The content
of the lists conforms to both the
LonMark®SCC functional profile 8500
and the LonMark®node object.
Table 2. Input/output listing
Input description Input SNVT type Output description Output SNVT type
Space temperature nviSpaceTemp SNVT_temp_p Space temperature nvoSpaceTemp SNVT_temp_p
Setpoint nviSetpoint SNVT_temp_p Unit status, mode nvoUnitStatus SNVT_hvac_status
Occupancy, schedule nviOccSchedule SNVT_tod_event Effective setpoint nvoEffectSetpt SNVT_temp_p
Occupancy, manual
command
nviOccManCmd SNVT_occupancy Effective occupancy nvoEffectOccup SNVT_occupancy
Occupancy sensor nviOccSensor SNVT_occupancy Heat cool mode nvoHeatCool SNVT_hvac_mode
Application mode nviApplicMode SNVT_hvac_mode Setpoint nvoSetpoint SNVT_temp_p
Heat/cool mode input nviHeatCool SNVT_hvac_mode Discharge air
temperature
nvoDischAirTemp SNVT_temp_p
Fan speed command nviFanSpeedCmd SNVT_switch Terminal load nvoTerminalLoad SNVT_lev_percent
Auxiliary heat enable nviAuxHeatEnable SNVT_switch Space CO2nvoSpaceCO2 SNVT_ppm
Valve override nviValveOverride SNVT_hvac_overid Effective air flow
setpoint
nvoEffectFlowSP SNVT_flow
Flow override nviFlowOverride SNVT_hvac_overid Air flow nvoAirFlow SNVT_flow
Emergency override nviEmergOverride SNVT_hvac_emerg File table address nvoFileDirectory* SNVT_address
Source temperature nviSourceTemp SNVT_temp_p Object status nvoStatus* SNVT_obj_status
Space CO2nviSpaceCO2 SNVT_ppm Alarm message nvoAlarmMessage SNVT_str_asc
Clear alarms/
diagnostics
nviRequest* SNVT_obj_request * Part of the node object.
Air flow setpoint input nviAirFlowSetpt SNVT_flow
Ventilation ratio limit nviVentRatioLim SNVT_lev_percent
Ventilation for the zone
input
nviVentSetpt SNVT_flow
* Part of the node object.
Table 3. Configuration properties
Configuration property
description Configuration property SNVT type SCPT reference
Send heartbeat nciSndHrtBt SNVT_time_sec SCPTmaxSendTime (49)
Occ temperature setpoints nciSetpoints SNVT_temp_setpt SCPTsetPnts (60)
Minimum send time nciMinOutTm SNVT_time_sec SCPTminSendTime (52)
Receive heartbeat nciRecHrtBt SNVT_time_sec SCPTmaxRcvTime (48)
Location label nciLocation SNVT_str_asc SCPTlocation (17)
Local bypass time nciBypassTime SNVT_time_min SCPTbypassTime (34)
Manual override time nciManualTime SNVT_time_min SCPTmanOverTime (35)
Space CO2limit nciSpaceCO2Lim SNVT_ppm SCPTlimitCO2 (42)
Nominal air flow nciNomFlow SNVT_flow SCPTnomAirFlow (57)
Air flow measurement gain nciFlowGain SNVT_multiplier SCPTsensConstVAV (67)
Minimum air flow nciMinFlow SNVT_flow SCPTminFlow (54)
Maximum air flow nciMaxFlow SNVT_flow SCPTmaxFlow (51)
Minimum air flow for heat nciMinFlowHeat SNVT_flow SCPTminFlowHeat (55)
Maximum air flow for heat nciMaxFlowHeat SNVT_flow SCPTmaxFlowHeat (37)
Minimum flow for standby nciMinFlowStdby SNVT_flow SCPTminFlowStby (56)
Firmware major version nciDevMajVer* n/a SCPTdevMajVer (165)
Firmware minor version nciDevMinVer* n/a SCPTdevMinVer (166)
Flow offset for tracking applications nciFlowOffset SNVT_flow_f SCPToffsetFlow (265)
Local heating minimum air flow nciMinFlowUnitHt SNVT_flow SCPTminFlowUnitHeat (270)
* Part of the node object.

Trane has a policy of continuous product and product data improvement and reserves the right to
change design and specifications without notice.
Literature Order Number CNT-PRC003-EN
File Number PL-ES-CNT-PRC003-1005
Supersedes CNT PRC003-EN April 2004
Stocking Location Inland
Trane
A business of American Standard Inc.
www.trane.com
For more information, contact your local Trane
office or e-mail us at [email protected]