Installation, Operation and Maintenance 5 - 1
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This section contains an overview of the operator
interface with the Series R chillers equipped with
microcomputer-based control systems. It presents
the array of options available using the Clear
Language Display and the associated keypad.
The section is organized first as a discussion of the
control system and the individual modules, showing
their relationship and functions.
The remainder of the section presents information on
accessing available chiller information using the
screens to either monitor or change settings and
setpoints. This part of the section covers information
available to you by pressing each report key followed
by the settings, tests, and diagnostics keys.
The display information is for reference only and not
in the form of sequential operating or controls
instructions, although certain specific instructions as
to programming and changing settings is given. In
many cases, background information on specific key
or controls functions is provided.
In all cases, other than report data displays, caution
should be observed before changing any parameters
until the impact of the change on chiller performance
is understood.
Following this section, sections 6 and 7 cover the
actual startup and shutdown sequences.
Maintenance schedules and procedures that must be
performed to keep the unit in top condition are in
sections 8 and 9. Diagnostic information (section 10)
is provided to allow you to identify system
malfunctions.
UCP2 Microprocessor Control System
The Unit Control Panel version 2 (UCP2)
microprocessor control system is a collection of
modules and software that perform system control,
protection, and optimization functions for the RTHC
chiller. All module control elements reside in the
control panel usually “stacked” on top of one another
and mounted on the panel’s backplane. Additionally,
the Clear Language Display operator interface is
mounted on the panel door.
The “Control System Block Diagram.” on page 2
accompanies the discussion in the following
paragraphs that describe the modules and the
specific chiller operating characteristics that are
displayed and reported.
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