Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53300253-01 Printed in U.S.A. Form No. 30RC-2SI Rev. A Pg 1 10-23 Replaces: 30RC-1SI
Installation Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 1 — Place, Rig, and Mount the Unit . . . . . . . . . 3
•PLACING UNIT
• MOUNTING UNIT
• EXPORT SHIPPING RAILS
• RIGGING UNIT
• COMPRESSOR SOUND BLANKETS
Step 2 — Make Evaporator Fluid, Partial Heat
Recovery, and Drain Piping Connections . . . . . . . 79
• FREEZE PROTECTION
• BPHE UNITS WITHOUT HYDRONIC PUMP PACKAGE
• DX UNITS WITHOUT HYDRONIC PUMP PACKAGE
• BPHE UNITS WITH HYDRONIC PUMP PACKAGE
• DX UNITS WITH HYDRONIC PUMP PACKAGE
• UNITS WITH OPTIONAL PARTIAL HEAT RECOVERY
• FOR ALL UNITS
Step 3 — Fill the Chilled Water and Partial Heat
Recovery Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
• WATER SYSTEM CLEANING
• WATER TREATMENT
• SYSTEM PRESSURIZATION
• FILLING THE SYSTEM(S)
• SET WATER FLOW RATE
• PUMP MODIFICATION/TRIMMING
•PUMP VFD
• SENSORLESS CONTROL (CLOSED LOOP) — ACTIVE
SETUP 1
• REMOTE SENSOR (CLOSED LOOP) — ACTIVE
SETUP 2
• REMOTE CONTROLLER (OPEN LOOP) — ACTIVE
SETUP 3
• PREPARATION FOR YEAR ROUND OPERATION
• FREEZE PROTECTION
• PREPARATION FOR WINTER SHUTDOWN
Step 4 — Make Electrical Connections . . . . . . . . . 105
• POWER SUPPLY
•POWER WIRING
• CONTROL POWER
• FIELD CONTROL OPTION WIRING
• DUAL CHILLER CONTROL OPTION
• CARRIER COMFORT NETWORK
®
(CCN)
COMMUNICATION BUS WIRING
• BACNET IP OR ETHERNET COMMUNICATION
• NON-CCN COMMUNICATION WIRING
• MS/TP WIRING RECOMMENDATIONS
Step 5 — Install Accessories . . . . . . . . . . . . . . . . . 158
• ENERGY MANAGEMENT MODULE
• LOW AMBIENT TEMPERATURE OPERATION
• MINIMUM LOAD ACCESSORY
• UNIT SECURITY/PROTECTION ACCESSORIES
• COMMUNICATION ACCESSORIES
• SERVICE OPTIONS
Refrigerant Circuit . . . . . . . . . . . . . . . . . . . . . . . . . .159
• LEAK TESTING
• DEHYDRATION
• REFRIGERANT CHARGE
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. This equipment is not
to be used by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowl-
edge, unless they have been given supervision or instruction.
Untrained personnel can perform basic maintenance functions,
such as cleaning coils. All other operations should be performed
by trained service personnel. Qualified installers and service tech-
nicians are required to have been trained on the following topics
when installing and servicing air-conditioning equipment with
A2L refrigerant such as R-32:
1. Explosive potential of A2L refrigerants
2. Potential ignition sources
3. Safety measures for unventilated and ventilated rooms or
enclosures
4. Refrigerant detectors
5. Concept of sealed components and sealed enclosures
according to IEC 60079-15:2010
6. Correct work procedures for the following:
a. Commissioning
b. Maintenance
c. Repair
d. Decommissioning
e. Disposal
Reference UL 60335-2-40 Annex HH for complete guidelines.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
1. Follow all safety codes.
2. Keep quenching cloth and fire extinguisher nearby when
brazing.
3. Wear safety glasses and work gloves.
4. Use care in handling, rigging, and setting bulky equipment.
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in in-
structions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
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