Carrier Touch Pilot Junior Manual page 4

PREFACE
The goal of this document is to give a broad overview of
the main functions of the control system used to control
30RBS air-cooled liquid chillers and 30RQS reversible
heat pumps with 39 to 160 kW cooling/heating capacity.
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.
Heating option! Heating option applies to cooling-only
units fitted with a boiler and heat pumps.
Note that this document may refer to optional components
and certain functions, options or accessories may not be
available for the specific unit. The cover images are solely
for illustration and form no part of any offer for sale or any
sale contract.
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.
4
CAUTION
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,
modified or used for any other purpose without the prior
consent of Carrier Corporation.
Acronyms/abbreviations
In this manual, the refrigeration circuits are called circuit A
and circuit B. Compressors in circuit A are labelled A1, A2,
A3, whereas compressors in circuit B are labelled B1, B2.
BMS Building Management System
CCN Carrier Comfort Network
DGT Discharge Gas Temperature
EXV Electronic Expansion Valve
EHS Electric Heater Stage
FC Free cooling
OAT Outdoor Air Temperature
LED Light Emitting Diode
LEN Sensor Bus (internal communication bus linking the basic
board to slave boards)
SCT Saturated Condensing Temperature
SST Saturated Suction Temperature
Network mode/Net Operating type: Network
Local-Off/LOFF Operating type: Local Off
Local-On/L-C Operating type: Local On mode
Local-Schedule/L-SC Operating type: Local On following a time schedule
Master mode/Mast Operating type: Master unit (master/slave assembly)
Remote mode/Rem Operating type: Remote contacts