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INTRODUCTION
Prior to initial start-up of the 19XR unit, those involved in the
start-up, operation, and maintenance should be thoroughly famil-
iar with these instructions and other necessary job data. Proce-
dures in this manual are arranged in the sequence required for
proper chiller start-up and operation. This book also outlines the
control system for those involved in the start-up, operation, and
maintenance of the unit before performing start-up procedures. It
is intended to be used in combination with the 19XR Controls Op-
eration and Troubleshooting manual that describes PIC6 controls
in detail.
CAUTION
UNIT DAMAGE HAZARD
This unit uses a microprocessor-based electronic control sys-
tem. Do not use jumpers or other tools to short out components
or to bypass or otherwise depart from recommended proce-
dures. Any short-to-ground of the control board or accompa-
nying wiring may destroy the electronic modules or electrical
components.
CAUTION
Do NOT punch holes or drill into the top surface of the starter
enclosure for field wiring. Knockouts are provided for field
wiring connections.
CAUTION
PROVIDE MACHINE PROTECTION. Store machine and
starter indoors, protected from construction dirt and moisture
and if required follow Carrier Long Term Storage guidelines.
Inspect under shipping tarps, bags, or crates to be sure water
has not collected during transit. Keep protective shipping cov-
ers in place until machine is ready for installation.
CAUTION
Be aware of electrostatic discharge (static electricity) when
handling or making contact with circuit boards or module con-
nections. Always touch a chassis (grounded) part to dissipate
body electrostatic charge before working inside control center.
Use extreme care when handling tools near boards and when
connecting or disconnecting terminal plugs. Circuit boards can
easily be damaged. Always hold boards by the edges and
avoid touching components and connections.
This equipment uses, and can radiate, radio frequency energy.
If not installed and used in accordance with the instruction
manual, it may cause interference to radio communications.
The PIC6 control boards have been tested and found to com-
ply with the limits for a Class A computing device pursuant to
International Standard in North America EN 61000-2/3 which
are designed to provide reasonable protection against such in-
terference when operated in a commercial environment. Oper-
ation of this equipment in a residential area is likely to cause
interference, in which case the user, at his own expense, will
be required to take whatever measures may be required to cor-
rect the interference.
Always store and transport replacement or defective boards in
anti-static shipping bag.
WHEN FLUSHING THE WATER SYSTEMS isolate the
chiller from the water circuits to prevent damage to the heat
exchanger tubes.
ABBREVIATIONS AND EXPLANATIONS
Frequently used abbreviations in this manual include:
CCN
—
Carrier Comfort Network
ECDW
—
Entering Condenser Water
ECW
—
Entering Chilled Water
EMS
—
Energy Management System
HGBP
—
Hot Gas Bypass
HMI
—
Human Machine Interface
I/O
—
Input/Output
ISM
—
Integrated Starter Module
LCDW
—
Leaving Condenser Water
LCW
—
Leaving Chilled Water
LED
—
Light-Emitting Diode
OLTA
—
Overload Trip Amps
PIC6
—
Product Integrated Controls 6
RLA
—
Rated Load Amps
SCR
—
Silicon Controlled Rectifier
TXV
—
Thermostatic Expansion Valve
VFD
—
Variable Frequency Drive
Factory-installed additional components are referred to as options
in this manual; factory-supplied but field-installed additional com-
ponents are referred to as accessories.
CHILLER FAMILIARIZATION
See Fig. 1-5 for chiller details.
Chiller Information Nameplate
The information nameplate is located on the right side of the
chiller control panel.
System Components
The components include cooler and condenser heat exchangers in
separate vessels, motor-compressor, lubrication package, control
panel/HMI, power panel, economizer, and motor starter or VFD.
Cooler
This vessel (also known as the evaporator) is located underneath
the compressor. The cooler is maintained at lower temperature/
pressure so evaporating refrigerant can remove heat from water
flowing through its internal tubes.
Condenser
The condenser operates at a higher temperature/pressure than the
cooler and has water flowing through its internal tubes in order to
remove heat from the refrigerant.
Motor-Compressor
This component maintains system temperature and pressure dif-
ferences and moves the heat-carrying refrigerant from the cooler
to the condenser. The 19XR compressor frame 3 are single-stage
compressors with one impeller. Frame C, E, 6, and 7 are two-stage
compressors with two impellers.
4
CAUTION
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