Carrier MINIMUM LOAD CONTROL ACCESSORY 30RB060-390, Installation Instructions Manual, Page: 1 / 76

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300124-01 Printed in U.S.A. Form 30RB-21SI Pg 1 318 12-13 Replaces: 30RB-20SI
Installation Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . .1,2
INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
Storage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 — Place, Rig and Mount Unit
. . . . . . . . . . . . . 2
• PLACING UNIT
• MOUNTING UNIT
• RIGGING UNIT
Step 2 — Remove Compressor Rack
Holddown Bolts
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Step 3 — Remove Compressor Shipping
Braces
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
• FOR UNITS WITH COMPRESSOR SOUND
BLANKETS
Step 4 — Make Cooler Fluid, Heat Reclaim and
Drain Piping Connections
. . . . . . . . . . . . . . . . . . . . 38
• FREEZE PROTECTION
• UNITS WITH HYDRONIC PUMP PACKAGE
• UNITS WITHOUT HYDRONIC PUMP PACKAGE
• UNITS WITH OPTIONAL HEAT RECLAIM
• HEAD PRESSURE CONTROL
• FOR ALL UNITS
Step 5 — Fill the Chilled Water and Heat Reclaim
Loop
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
• WATER SYSTEM CLEANING
• WATER TREATMENT
• SYSTEM PRESSURIZATION
• FILLING THE SYSTEM(S)
• SET WATER FLOW RATE
• PUMP MODIFICATION/TRIMMING
• PUMP VFD
• SENSORLESS CONTROL (CLOSED LOOP)
• REMOTE SENSOR (CLOSED LOOP)
• REMOTE CONTROLLER (OPEN LOOP)
• PREPARATION FOR YEAR-ROUND
OPERATION
• FREEZE PROTECTION
• PREPARATION FOR WINTER SHUTDOWN
• CHILLED WATER SYSTEM
• HEAT RECLAIM SYSTEM
Step 6 — Make Electrical Connections
. . . . . . . . . . 57
• POWER SUPPLY
• POWER WIRING
• CONTROL POWER
• FIELD CONTROL OPTION WIRING
• DUAL CHILLER CONTROL OPTION
• CARRIER COMFORT NETWORK ®
COMMUNICATION BUS WIRING
• NON-CCN COMMUNICATION WIRING
Step 7 — Install Accessories
. . . . . . . . . . . . . . . . . . . . 70
• NAVIGATOR™ DISPLAY
• REMOTE ENHANCED DISPLAY
• LOW AMBIENT TEMPERATURE OPERATION
• MINIMUM LOAD ACCESSORY
• UNIT SECURITY/PROTECTION ACCESSORIES
• COMMUNICATION ACCESSORIES
• SERVICE OPTIONS
Page
Refrigerant Circuit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
• LEAK TESTING
• DEHYDRATION
• REFRIGERANT CHARGE
BACnet Communication Option Wiring
. . . . . . . . . 71
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning
equipment can be hazardous due to system pressures, electrical
components, and equipment location.
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
• Follow all safety codes.
• Keep quenching cloth and fire extinguisher nearby when
brazing.
• Wear safety glasses and work gloves.
• Use care in handling, rigging, and setting bulky
equipment.
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.
IMPORTANT: This equipment generates, uses, and can
radiate radio frequency energy and if not installed and
used in accordance with these instructions may cause
radio interference. It has been tested and found to comply
with the limits of 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 interference when operated in a commercial
environment.
CAUTION
This system uses Puron ® refrigerant (R-410A), which has
higher pressures than R-22 and other refrigerants. No other
refrigerant can be used in this system. Failure to use gage
set, hoses, and recovery systems designed to handle Puron
refrigerant (R-410A) may result in equipment damage or
personal injury. If unsure about equipment, consult the
equipment manufacturer.
AquaSnap
®
30RB060-390 Air-Cooled Chillers and
30RB080-390 Air-Cooled Chillers with
Greenspeed
®
Technology