4
PREFACE
The goal of this manual is to give a broad overview of the
main functions of the Touch Pilot control system used to
control and monitor the operation of 30KAV air-cooled
chillers using screw compressor technology.
Instructions in this manual are given as a guide to good
practice in the installation, start-up and operation of the
control system. This document does not contain full service
procedures for the correct operation of the equipment.
The support of a qualified Carrier Service Engineer is
strongly recommended to ensure optimal operation of the
equipment as well as the optimization of all available
functionalities.
Note that this document may refer to optional components
and certain functions, options or accessories may not be
available for the specic unit.
IMPORTANT: All screenshots of the user interface provided
in this manual include text in English. After changing the
language of the system, all labels will be in the language
selected by the user.
Please read all instructions prior to proceeding with any
work. Pay attention to all safety warnings.
The information provided herein is solely for the purpose of
allowing customers to operate and service Carrier-manufactured
equipment and it is not to be reproduced, modied or used for
any other purpose without the prior consent of Carrier
Corporation.
Abbreviations
In this manual, the refrigerant circuits are called circuit A and
circuit B. Compressor in circuit A is labelled A1 and
compressor in circuit B is labelled B1. The following
abbreviations are used frequently:
BMS Building Management System
CCN Carrier Comfort Network
DGT Discharge Gas Temperature
EMM Energy Management Module
EXV Electronic Expansion Valve
LED Light Emitting Diode
LEN Sensor Bus (internal communication bus linking the
basic board to slave boards)
LON Local Operating Network
SCT Saturated Condensing Temperature
SST Saturated suction Temperature
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