Trane VariTrac Changeover-Bypass VAV Systems user manual

User manual for the device Trane VariTrac Changeover-Bypass VAV Systems

Device: Trane VariTrac Changeover-Bypass VAV Systems
Category: Thermostat
Manufacturer: Trane
Size: 0.14 MB
Added : 8/5/2013
Number of pages: 16
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Summary of the content on the page No. 1

Marketing
Guide
TM
VariTrac
Changeover-Bypass
VAV Systems
Order No.: VAV-SLM002-EN Date: March 2002

Summary of the content on the page No. 2

The VariTrac History Trane brought their expertise in variable air volume (VAV) controls into the changeover-bypass zoning market with the introduction of VariTrac in 1989. The concept of changeover-bypass zoning brings the flexibility and comfort of VAV systems into the light commercial unitary market, at an affordable price. The first generation of VariTrac was a 16-zone pressure dependent system. The zone dampers featured the same electronic zone controller Trane developed for its VAV boxes

Summary of the content on the page No. 3

Contents The History of VariTrac................................................. 2 Introduction ................................................................... 4 Why Changeover Bypass VAV ............................ 4 The Delivered Systems Concept.......................... 5 Feature and Benefits..................................................... 6 Product Changes at a Glance .............................. 6 Hardware Overview.............................................. 7 VariTrac Functi

Summary of the content on the page No. 4

Introduction Why Changeover-Bypass VAV Packaged unitary systems offer one of today’s most popular and cost- effective methods for supplying conditioned air to small commercial buildings. The unitary machine most commonly used has a constant volume fan with a fixed outside air damper and a single thermostat. While this may meet the thermal requirements of the space, it may not meet all the comfort requirements of the space using a single thermostat for control. Changeover-bypass VAV is a design

Summary of the content on the page No. 5

The Delivered Systems Concept Delivered products represent approximately eighty percent of the light commercial building market. The term delivered product refers to the relationship between the manufacturer and the contractor. The relationship is often limited to the sale and delivery of the product. The contractor takes full responsibility for installation and service. Delivered products contrast with applied products, for which the relationship between manufacturer and contractor extends

Summary of the content on the page No. 6

Features and Benefits The primary advantage of Trane’s zoning systems is that they are completely integrated systems with Trane’s unitary equipment. Another benefit is that these systems are so simple to install, operate and service, that contractors and installers can take advantage of the delivered concept versus the applied world of design, engineering, and programming. For more information, refer to the table below which describes and compares the features and benefits of Trane’s newest cha

Summary of the content on the page No. 7

Hardware Overview Central Control Panel Enclosure The new VariTrac Central Control Panel (CCP) has a three-piece enclosure for simplified installation. All wiring is done on large, easily accessible terminal strips located in the wall mount base plate. The electronics are located in the middle section, which is snapped onto the base plate after mounting. The top section is either a blank face plate, or the optional operator display. Central Control Panel Operator Display The optional operator

Summary of the content on the page No. 8

Digital Display Zone Sensor The new digital display zone sensor has the look and functionality of the standard Trane zone sensor, but includes an LCD digital display of the space temperature and setpoint adjustment in degrees F or C. The sensor has ON and CANCEL buttons, and a communications jack which can be accessed without removing the cover. The sensor requires 24 volts, and may share a power supply with UCM. Zone Occupancy Sensor The new zone occupancy sensor is a ceiling-mount infrared m

Summary of the content on the page No. 9

Supply Air Tempering It is now possible to enable the Supply Air Tempering function in a Voyager via the CCP. This allows the Voyager to cycle a stage of heat on and off to warm up the supply air stream and better manage the load created by increased ventilation air requirements. CO2 Based Demand Control Ventilation CO2 sensors many now be connected to VariTrac zone UCMs. Up to one sensor per zone on the system may be applied. The CCP Demand Control Ventilation configuration screen allows you

Summary of the content on the page No. 10

Application Considerations for Changeover-Bypass-VAV A building with varying loads due to occupancy, time-of-day, or other special needs is a likely candidate for a changeover-bypass VAV system. Also, any structure required to meet the higher ventilation requirements associated with ASHRAE Standard 62 is a prime target. These applications include: • Offices and small manufacturing buildings – Varying occupancy places varying demands on the HVAC system. • Schools – Heightened concerns about indo

Summary of the content on the page No. 11

Customer Identification In technical sales, it is important to understand the answer to a fundamental question: Who needs this product and why? Ideal customers for VariTrac changeover-bypass VAV systems include: • customers with buildings having significant variable occupancy (schools, office buildings, etc.) • customers with buildings that want better tenant comfort, at a reasonable price • building owners or facility managers that receive constant complaints about hot or cold areas in their bu

Summary of the content on the page No. 12

Contractors The first cost benefits associated with Trane’s changeover-bypass-VAV systems are important to contractors because: • at the top of their list is a “delivered” system that requires very little programming, virtually no engineering, and is simple to install, operate, and service • auto-configuring saves hours over having to locate and match terminal units in the field to the software in the main controller • a one-step balance mode saves hours over the traditional method of balancing

Summary of the content on the page No. 13

Selling Changeover-Bypass-VAV Systems Trane’s largest competitor for selling VAV zoning systems is Trane! We sell more rooftops with programmable thermostats than our competitors do selling their VAV zoning systems. In other words, even though we have a formidable competitor with Carrier’s VVT system, we would and could hold a similar share in the marketplace by selling Trane’s VariTrac over single units with programmable stats without even worrying about our competition. The most effective wa

Summary of the content on the page No. 14

14 VAV-SLM002-EN

Summary of the content on the page No. 15

VAV-SLM002-EN 15

Summary of the content on the page No. 16

Literature Order Number VAV-SLM002-EN Date March 2002 Trane Supersedes New An American Standard Company www.trane.com Stocking Location LaCrosse For more information contact your local district Since Trane has a policy of continuous product and product data improvement, it reserves the right to office or e-mail us at comfort@trane.com change design and specifications without notice. 16 VAV-SLM002-EN


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