1 - GENERAL DESCRIPTION
1.1 - General
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 19PV water-cooled chillers using MagLev
compressors with an integrated variable frequency drive.
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 qualied Manufacturer 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 the equipment and it is
not to be reproduced, modied or used for any other purpose
without the prior consent of the Manufacturer.
1.2 - Abbreviations
In this manual, the refrigerant circuits are called circuit A and
circuit B.
Compressors in circuit A are labelled A1, A2 and compressors in
circuit B are labelled B1 and B2.
The following abbreviations are used frequently:
BMS Building Management System
EWT Entering Water Temperature
EXV Electronic Expansion Valve
LED Light Emitting Diode
LEN Internal communication bus linking the controller and
the boards
LWT Leaving Water Temperature
MagLev Magnetic Levitation
OAT Outdoor Air Temperature
4
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