1 - INTRODUCTION
1.1 - ABOUT THIS MANUAL
This manual is intended to be used as an additional guide for using and configuring the Pro-Dialog control for
the 30GX & HX chillers.
The use of this document does not substitute the IOM.
This manual is intended for use by Service organizations inside the Carrier corporation. It is delivered on
the express condition that it is not to be disclosed, reproduced in whole or in part, or used for
manufacture by anyone other than Carrier Corporation.
1.2 - MANUAL STRUCTURE AND CONTENTS
This manual includes the following sections:
v
Introduction
v
Product general description
v
Hardware description
v
Control description
v
Appendixes
The introduction and product general description sections contain information about this manual as an overview
of the 30GX&HX Pro-Dialog
Plus
controls.
The hardware section provides complete information on boards, devices and connections used by the product.
The control description section is divided in several subsections. First provides a main description of hardware
configuration. This subsection provides sufficient information to runs the control in the most operating cases. For
more complete information, use the remaining sections and also IOM. Second subsection describes all the unit
configuration and the methods to modify it. The last subsections describe the unit control logic’s.
2 - GENERAL DESCRIPTION
2.1 - GENERALITIES
PRO-DIALOG is a system for controlling units which use screw compressors:
w
Dual circuits
w
Air cooled and water cooled chillers
w
Non reversible heat machines
PRO-DIALOG controls compressors and loaders needed to maintain the desired leaving or entering water
control point. It automatically sets the position of the electronic expansion valve to maintain a correct refrigerant
flow in the cooler. For air cooled units it controls the operation of the fans to maintain the correct condensing
pressure in each circuit.
Safety circuits in the unit are constantly monitored by PRO-DIALOG to ensure its safe operation. PRO-DIALOG
also gives access to a Quick Test program covering all inputs and outputs excepted compressors outputs.
The control features of the 30GX&HX Pro-Dialog
Plus
are divided into standard features and options
(
additional board needed
):
CARRIER SA
USER'S GUIDE FOR
30GX&HX PRO_DIALOG 4 V.2
ECG-UG-02-002
Rev: original
Page: 4/98
©
C
ARRIER
S
.
A
NOT
TO
BE
DISCLOSED
TO
PERSONS
OUTSIDE
CARRIER
ORGANIZATION
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