Introduction; Abbreviations And Explanations; Chiller Familiarization (Fig. 1-5); Chiller Information Nameplate - Carrier AquaEdge 19XR Start-Up, Operation And Maintenance Instructions Manual

INTRODUCTION

Prior to initial start-up of the 19XR unit, those involved in the
start-up, operation, and maintenance should be thoroughly fa-
miliar with these instructions and other necessary job data.
Procedures in this manual are arranged in the sequence re-
quired 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 Operation and Troubleshooting manual that de-
scribes PIC 6 controls in detail.
CAUTION
UNIT DAMAGE HAZARD
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out com-
ponents or to bypass or otherwise depart from recommend-
ed procedures. Any short-to-ground of the control board or
accompanying 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 mois-
ture 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 protec-
tive shipping covers 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
connections. Always touch a chassis (grounded) part to dis-
sipate body electrostatic charge before working inside con-
trol 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 ener-
gy. If not installed and used in accordance with the instruc-
tion manual, it may cause interference to radio communica-
tions. The PIC 6 control boards have been tested and found
to comply 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 pro-
tection against such interference when operated in a com-
mercial environment. Operation of this equipment in a resi-
dential 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 correct the interference.
Always store and transport replacement or defective boards
in anti-static shipping bag.
CAUTION
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
PIC 6 — 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 op-
tions in this manual; factory-supplied but field-installed addi-
tional components are referred to as accessories.

CHILLER FAMILIARIZATION (Fig. 1-5)

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 under-
neath the compressor. The cooler is maintained at lower tem-
perature/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
differences and moves the heat- carrying refrigerant from the
cooler to the condenser. The 19XR compressor frames 2, 3, 4,
and 5 are single-stage compressors with one impeller. Frame C,
E, 6, and 7 are two-stage compressors with two impellers.

Control Panel

The control panel includes the Carrier PIC 6 HMI touchscreen. It
allows user interface for controlling the chiller. It regulates the
chiller's capacity as required to maintain proper leaving chilled
water temperature. The control panel:
• registers cooler, condenser, and lubricating system pressures
• shows chiller operating condition and alarm shutdown
conditions
• records the total chiller operating hours
• sequences chiller start, stop, and recycle under micropro-
cessor control
• displays status of motor starter
• provides access to other CCN (Carrier Comfort Network
devices and energy management systems
• supports languages that may be preinstalled at factory, in-
cluding English, Chinese, Korean, Italian, Japanese,
French, and German.
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