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3VAV-PRC003-EN
Contents
Introduction ............................................................. 4
Comfort Made Simple ................................................................ 4
The Changeover Bypass VAV Comfort Advantage ....................... 4
VariTrac Product Enhancements ................................................. 4
Features and Benefits ........................................... 5–12
Overview ................................................................................... 6
Central Control Panel ................................................................. 7
Optional Operator Display .......................................................... 7
Communicating Bypass Controller ............................................. 8
Tracker System Integration ......................................................... 8
VariTrac Bypass Dampers ........................................................... 9
VariTrac Zone Dampers ............................................................ 10
Unit Control Module ................................................................ 10
Zone Sensors ...................................................................... 11–12
Application Considerations ................................ 13–24
Introduction .............................................................................. 13
Zoning Considerations .............................................................. 13
Effective Changeover Bypass VAV System Design ................ 14–19
Pressure Dependent vs. Pressure Independent .......................... 20
Local Reheat Capabilities Using VariTrane VAV Units ............. 20–21
Bypass Damper Operation ........................................................ 22
Building Pressure Control ......................................................... 23
Application Tip Summary .......................................................... 24
Selection Procedures ......................................... 25–28
VariTrac Dampers ................................................................ 25–26
Service Model Numbers ........................................................... 27
Typical Bill of Materials ............................................................. 28
Electrical Data and Connections ......................... 29–34
Specifications ................................................... 35–38
Acoustics .......................................................... 39–40
Dimensions and Weights .................................... 41–46
Glossary ........................................................... 47–48
™ ® The following are trademarks or
registered trademarks of their respective
companies: Precedent, ReliaTel, Trace, Tracker,
VariTrac, VariTrane, Voyager.