Safety Considerations; General - Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions

CONTENTS (cont)
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
• COOLER LEAVING FLUID SENSOR
• COOLER ENTERING FLUID SENSOR
• DUAL CHILLER LWT
• COMPRESSOR RETURN GAS TEMPERATURE
• OUTDOOR AIR TEMPERATURE
• REMOTE SPACE TEMPERATURE
Service Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
APPENDIX A — LOCAL DISPLAY TABLES . . . . . . 82-93
APPENDIX B — CCN TABLES . . . . . . . . . . . . . . . . . . 94-107
APPENDIX C — CCN ALARM DESCRIPTION . . 108-111
APPENDIX D — R-410A PRESSURE VS.
TEMPERATURE CHART. . . . . . . . . . . . . . . . . . . . . . . . . 112
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113,114
START-UP CHECKLIST FOR 30RB
LIQUID CHILLER . . . . . . . . . . . . . . . . . . . . . . . . CL-1 to CL-9

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roof, elevated structures, etc.). Only
trained, qualified installers and service mechanics should
install, start up, and service this equipment. When working on
this equipment, observe precautions in the literature, and on
tags, stickers, and labels attached to the equipment, and any
other safety precautions that apply. Follow all safety codes.
Wear safety glasses and work gloves. Use care in handling,
rigging, and setting this equipment, and in handling all electri-
cal components..
WARNING
Electrical shock can cause personal injury and death. Shut
off all power to this equipment during installation. There
may be more than one disconnect switch. Tag all discon-
nect locations to alert others not to restore power until work
is completed.
WARNING
DO NOT VENT refrigerant relief valves within a building.
Outlet from relief valves must be vented outdoors in
accordance with the latest edition of ANSI/ASHRAE
(American National Standards Institute/American Society
of Heating, Refrigeration and Air Conditioning Engineers)
15 (Safety Code for Mechanical Refrigeration). The
accumulation of refrigerant in an enclosed space can
displace oxygen and cause asphyxiation. Provide adequate
ventilation in enclosed or low overhead areas. Inhalation of
high concentrations of vapor is harmful and may cause
heart irregularities, unconsciousness or death. Misuse can
be fatal. Vapor is heavier than air and reduces the amount
of oxygen available for breathing. Product causes eye and
skin irritation. Decomposition products are hazardous.
WARNING
DO NOT attempt to unbraze factory joints when servicing
this equipment. Compressor oil is flammable and there is
no way to detect how much oil may be in any of the
refrigerant lines. Cut lines with a tubing cutter as required
when performing service. Use a pan to catch any oil that
may come out of the lines and as a gage for how much oil
to add to system. DO NOT re-use compressor oil.
Page
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out
components, or to bypass or otherwise depart from recom-
mended procedures. Any short-to-ground of the control
board or accompanying wiring may destroy the electronic
modules or electrical components.
To prevent potential damage to heat exchanger, always run
fluid through heat exchanger when adding or removing
refrigerant charge. Use appropriate brine solutions in cooler
fluid loop to prevent the freezing of brazed plate heat
exchanger, optional hydronic section and/or interconnecting
piping when the equipment is exposed to temperatures
below 32 F (0° C). Proof of flow switch and strainer are
factory installed on all models. Do NOT remove power
from this chiller during winter shutdown periods without
taking precaution to remove all water from heat exchanger
and optional hydronic system. Failure to properly protect
the system from freezing may constitute abuse and may
void warranty.
Compressors and optional hydronic system pumps require
specific rotation. Test condenser fan(s) first to ensure
proper phasing. Swap any two incoming power leads to
correct condenser fan rotation before starting any other
motors. Operating the unit without testing the condenser
fan(s) for proper phasing could result in equipment
damage.
Refrigerant charge must be removed slowly to prevent loss
of compressor oil that could result in compressor failure.
Puron refrigerant (R-410A) systems operate at higher
®
pressures than standard R-22 systems. Do not use R-22 ser-
vice equipment or components on Puron refrigerant equip-
ment. If service equipment is not rated for Puron
refrigerant, equipment damage or personal injury may
result.
This publication contains Controls, Operation, Start-Up,
Service and Troubleshooting information for the 30RB060-390
air-cooled liquid chillers with electronic controls. The 30RB
chillers are equipped with ComfortLink™ controls and
electronic expansion valves.
NOTE: Unit sizes 315-390 are modular units that are shipped
in separate sections as modules A or B as noted in position 8 of
the unit model number. Installation directions specific to these
units are noted in these instructions. For modules 315A, 315B,
330A, 330B, 345A, 345B, and 360B, follow all general
instructions as noted for unit sizes 30RB160,170. For modules,
360A, 390A, and 390B follow instructions for 30RB190. See
Table 1 for a listing of unit sizes and modular combinations.
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GENERAL