Trane Installation Guide

Introduction

Read this manual thoroughly before operating or servicing this unit.

Warnings, Cautions, and Notices

Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

• AWARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
• ACAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices.
• NOTICE: Indicates a situation that could result in equipment or property-damage only accidents.

Important Environmental Concerns

Scientific research has shown that certain man-made chemicals can affect the earth's naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.

Important Responsible Refrigerant Practices

Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified according to local rules. For the USA, the Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them.

Copyright

This document and the information in it are the property of Trane, and may not be used or reproduced in whole or in part without written permission. Trane reserves the right to revise this publication at any time, and to make changes to its content without obligation to notify any person of such revision or change.

Trademarks

All trademarks referenced in this document are the trademarks of their respective owners.

Revision History

Updated Wiring the Sensor - IntelliPak I section in Installation chapter.

Overview

General

An economizer must be installed and functional before attempting to install a CO2 Sensing Kit. These sensors detect and control the carbon dioxide level in the conditioned space by measuring CO2 concentration, comparing it with a user-adjustable set point (set at the Human Interface). The CO2 signals cause the economizer damper to be positioned so that sufficient fresh air is introduced into the conditioned space to reduce and maintain the CO2 concentration to a minimum level as selected by the user.

Inspection

1. Unpack all components of the CO2 Sensing kit.
2. Check carefully for any shipping damage. If any damage is found it must be reported immediately and a claim made against the transportation company.

Parts List

CO2 sensor as follows: BAYCO2K011A (Wall Sensor), BAYCO2K012A (Duct Sensor)

• 1 - CO2 Demand-Controlled Ventilation Wall Sensor with instructions and mounting hardware
• 1 - CO2 Demand-Controlled Ventilation Duct Sensor with instructions and mounting hardware
• 1 - Length of 1/8" X 3/4" foam gasket tape
• 2 - #8-32 Screws for mounting
• 2 - Wire Tie, Standard
• 5 - Wire Tie, Pop-In Anchor Type
• 1 - Plastic Bushing for 1.09 diameter hole
• 1 - Plastic Bushing for 0.88 diameter hole
• 1 - "CO2 Kit installed" Label

Installation

Instructions

Mounting the Wall Sensor

1. Select a proper location in the room to mount the CO2 sensor. Look for an interior wall with good air circulation, approximately 54 in. (1.4 m) from the floor.
2. Remove the back plate from the sensor and thread the power wires and output signal wire through the hole in the back plate. For surface wiring, make cut-outs with pliers to the thinner section of the upper or lower edge of the back plate and to thread the wires through.
3. Mount the back plate to the wall with screws. Note that the arrow on the back plate shows the mounting direction.
4. On the circuit board, use the two jumpers next to the terminal block to set up the type of output (0-10 Vdc, 0-20 mA, 4-20 mA).
5. Insert the circuit board in the back plate as shown. Do not press the metal tube while inserting the circuit board.

Figure 1. Field wiring of CO2 wall sensor

Diagram Description: A diagram showing the back of the CO2 wall sensor with a cut-out section for wires and the circuit board being inserted into the back plate.

Mounting the Duct Sensor

1. Select a proper location on the duct to mount the CO2 sensor.
2. Drill a 7/8-inch to 1-inch hole in the mounting surface for sensor insertion.
3. Attach the mounting plate to the duct wall with four screws.
4. Insert the sensor through the mounting plate, adjusting the depth for optimal air sensing.
5. If conduit is required, remove the wiring grommet and install the supplied 1/2-inch National Pipe Thread (NPT) conduit fitting.
6. On the circuit board, use the two jumpers next to the terminal block to set up the type of output (0-10 Vdc, 0-20 mA, 4-20 mA). The default setting is 4-20 mA. This needs to be changed to 0-10 Vdc.

Figure 2. CO2 duct sensor

Diagram Description: A diagram illustrating the dimensions and mounting of the CO2 duct sensor.

Wiring the Sensor - IntelliPak II

1. Wire the sensor from the ground terminal (terminal 0) to 1TB6-18. 1TB6-18 is wired to J7-3 on the VCM.
2. For voltage output, wire terminal V (OUT) on the sensor to 1TB6-17. 1TB6-17 is wired to J7-2 on the VCM.

Figure 3. IPak II wiring from the CO2 sensor to the VCM

Diagram Description: A wiring diagram showing the connection of the CO2 sensor to the VCM (Vehicle Control Module) for IntelliPak II systems, including voltage and ground connections.

Wiring the Sensor - IntelliPak I

Wire the sensor to the unit according to the following table.

Figure 4. Wiring from the CO2 wall sensor to the unit

Diagram Description: A wiring diagram illustrating the connections between the CO2 wall sensor and the IntelliPak I unit, specifying terminals for 24V, OUT, and GND.

Note: The 1XD25 terminals are factory wired to the 1KF11 board.