Trane VAV-IN-24, VAV User Manual

Installation

Unit Control Module (UCM) 4.2 Retrofit
Model VAV

Models

“A” and later Design Sequence

VAV

July 2005

VAV-IN-24

Notice

NOTICE:

Warnings and Cautions appear at appropriate sections throughout this manual.
Read these carefully.

WARNING – Indicates a potentially hazardous situation

which, if not avoided, could result in death or
serious injury.

CAUTION – Indicates a potentially hazardous situation

which, if not avoided, may result in minor or

moderate injury. It may also be used to alert

against unsafe practices.

CAUTION – Indicates a situation that may result in

equipment or property-damage-only accidents.

General

The purpose of this installation manual is to provide application, functional and
calibration information for the Trane Retrofit package. Examples and charts are
provided to enhance the understanding of this information.

Introduction

The DDC/VAV retrofit kit consists of the UCM control assembly, a Honeywell™ or
Belimo™ actuator (both optional), and various accessories such as zone sensors,
transformers, flow sensors, etc. This manual is intended to show how to apply,
install and configure the DDC/VAV Retrofit kit. It is intended to provide
information specific to the VAV retrofit. Refer to VAV-SVX01C-EN for complete
DDC/VAV system wiring, installation and programming instructions.

Applications

The retrofit kit may be applied to pneumatic terminals by replacing the pneumatic
actuator with an electric actuator or electrically controlled terminals by either
using the existing electric actuator or by replacing it with one provided by Trane.

The kit may be used on existing shutoff, shutoff hot water reheat, shutoff with up
to three stages of electric heat, and fan powered (both parallel and series) cooling
only, hot water, and electric reheat units.

Note: Fan powered units have only two stages of reheat available.

Dual duct units may also be retrofitted using two sets of controllers. The kit has
also been applied to constant volume reheat systems where the retrofit kit is used
to control duct coils.

The kit has been tested on VAV terminals of several major manufacturers. It is
mandatory for unit to have an external shaft to function properly with the direct
coupled actuators offered.

© 2005 American Standard All rights reserved VAV-IN-24

Contents

Installation/Startup/Commissioning

Notice/Introduction

Application

Hardware 4

Installation 5

Commissioning 6

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VAV-IN-24 3