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Table of Contents
- 1 Table of Contents
- 2 I-Model Number
- 3 II-General Information
- 4 III-Installation Mechanical
- 5 IV-Installation Electrical
- 6 V-Operating Principles
- 7 VI-Controls Interface
- 8 VII-Diagnostics
- 9 VIII-Pre-Start Checkout
- 10 IX-Unit Start-Up Procedures
- 11 X-Periodic Maintenance
- 12 XI-Maintenance Procedures
- 13 XII-Wiring Diagram
- 14 XIII-Standard Conversion Table
- Download this manual
Installation
Operation
Maintenance
Series R Air-Cooled Helical Rotary
Liquid Chillers
RTAC Plus 140 - 350 Ton (60 Hz)
RTAC Plus 140 - 300 Ton (50 Hz)
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and
servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the
literature and on the tags, stickers, and labels that are attached to the equipment.
RTAC-SVX002A-EN
May 2014
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Table of Contents
Related Manuals for Trane RTAC 350 Series
Summarization of Contents
II- General Information
Unit Inspection and Handling
Inspect unit for damage upon delivery, report issues to carrier, and follow checklist.
Unit Description and Features
Describes the RTAC units as air-cooled liquid chillers with hermetic compressor packages.
II- General Information
Identification Tag Details
Explains the location and information found on the RTAC identification tags.
III- Installation Mechanical
Installation Responsibilities
Outlines contractor duties for installing an RTAC unit, including foundation, piping, and wiring.
Nameplates and Data
Details information on outdoor unit and compressor nameplates for identification and specifications.
III- Installation Mechanical
Foundation and Clearances
Provides guidelines for proper foundation requirements and necessary clearances around the unit.
III- Installation Mechanical
Unit Isolation, Leveling, and Piping
Covers installing isolators, leveling, flushing piping, and water treatment for evaporator.
III- Installation Mechanical
Freeze Protection and Glycol Recommendations
Details freeze protection measures and provides guidelines for low evaporator refrigerant cutout and % glycol.
IV- Installation Electrical
General Electrical Recommendations
Emphasizes compliance with codes, proper wiring diagrams, and electrical data on the nameplate.
Hazardous Voltage and Capacitor Safety
Warns about hazardous voltage from capacitors and stresses lockout/tagout procedures before servicing.
IV- Installation Electrical
Installer-Supplied Components and Wiring
Lists required installer components and guidelines for power supply and control wiring.
IV- Installation Electrical
Control Power, Heaters, and Pump Interlocks
Details control power, heater supply, and chilled water pump interlocks for safe operation.
IV- Installation Electrical
External Setpoint and Current Limit Configuration
Explains configuration of external chilled water setpoint (ECWS) and current limit setpoint (ECLS) options.
IV- Installation Electrical
Communications Interface Options
Covers Tracer and LonTalk Communications Interfaces, including installation requirements.
V- Operating Principles
LonTalk Points List for Communication
Lists LonTalk input/output variables (SNVT types) for the communication interface.
V- Operating Principles
Refrigeration Cycle Overview
Provides an overview of the RTAC chiller's refrigeration cycle with key state points.
V- Operating Principles
Refrigerant, Compressor, and Condenser Functions
Describes R134a refrigerant, compressor operation, and the roles of the condenser and expansion valve.
V- Operating Principles
Evaporator Design and Oil System
Details the evaporator's falling film design and the oil system for compressor lubrication.
VI- Controls Interface
CH530 Control System Overview
Explains the CH530 control system components: processor, LLID bus, and communication interface.
DynaView Interface Features
Describes the DynaView interface capabilities for display, settings adjustment, and physical design.
VI- Controls Interface
Touch Screen Navigation and Key Functions
Outlines touch screen functions: radio buttons, spin buttons, action buttons, hot links, and file folder tabs.
VI- Controls Interface
Display Screens Basic Format
Explains the standard format of display screens, including tabs, scroll arrows, and interactive areas.
VI- Controls Interface
Front Panel Lockout and Modes Screen
Details the lockout feature requiring a password and the modes screen showing component operating states.
VI- Controls Interface
Chiller and Compressor Screens
Describes the chiller screen for activity summary and compressor screen for individual compressor status.
VI- Controls Interface
Setpoint Screen and Data
Explains the two-part setpoint screen for viewing/changing setpoints and displays related data.
VI- Controls Interface
Setpoint Options and Diagnostic Screen
Lists setpoint options, conditions, and the diagnostic screen for viewing and resetting errors.
VI- Controls Interface
Active Chilled Water Subscreen
Explains how the active chilled water setpoint is determined by arbitration and displays reset status.
VI- Controls Interface
Active Current Limit and Ice Termination Subscreens
Details active current limit and ice termination subscreens, including arbitration and display.
VI- Controls Interface
Refrigerant Screen Data
Provides refrigerant screen data displaying pressures, temperatures, and liquid level for each circuit.
VI- Controls Interface
Analog Setpoint Subscreens
Explains analog setpoint subscreens, timeouts, and screen switching for setting adjustments.
VI- Controls Interface
Software Download and Installation Process
Provides instructions for downloading and installing TechView software, Java Runtime, and emGateway.
VII- Diagnostics
Connecting Laptop and Diagnostics Overview
Explains laptop connection to CH530 for monitoring and introduces the diagnostic table and its legend.
Diagnostic Table Categories
Defines terms in the diagnostic table: Hex Code, Severity, Persistence, Criteria, and Reset Level.
VII- Diagnostics
Diagnostic Codes: BAS, Clock, Water Flow
Lists diagnostics for BAS communication, clock, water flow, pressure, and valve status.
VII- Diagnostics
Diagnostic Codes: Fan Control and Status
Covers diagnostics for fan control, inverter faults, power issues, and status/annunciation relays.
VII- Diagnostics
Diagnostic Codes: Fan Drive Faults and Safety
Details diagnostics for fan drive faults, emergency stop inputs, and evaporator sensors.
VII- Diagnostics
Diagnostic Codes: Water Flow and Refrigerant
Lists diagnostics for water flow, communication loss, and refrigerant pressure readings.
VII- Diagnostics
Diagnostic Codes: Low Evaporator Conditions
Covers diagnostics for low chilled water temperature, low refrigerant pressure, and liquid level.
VII- Diagnostics
Diagnostic Codes: Motor Overload and MP Errors
Details diagnostics for motor overload, MP errors, invalid configuration, and memory reformat issues.
VII- Diagnostics
Diagnostic Codes: Starter and Power Loss
Lists diagnostics for starter faults, phase issues, power loss, and pumpdown termination.
VII- Diagnostics
Diagnostic Codes: Starter Faults and Current Imbalance
Covers starter fault types, communication loss, and severe current imbalance diagnostics.
VII- Diagnostics
Diagnostic Codes: Starter Module Memory and Limits
Details diagnostics for starter module memory errors and starter panel high temperature limits.
VII- Diagnostics
Diagnostic Codes: Transition Complete and Voltage
Lists diagnostics for transition complete inputs, under voltage, and low evaporator refrigerant pressure.
VIII- Pre-Start Checkout
Receiving and Unit Location Checks
Guides on verifying unit data, inspecting for damage, and checking location and clearances.
Unit Piping and Water Treatment
Covers flushing piping, installing gauges, strainers, and essential water treatment precautions.
Electrical Wiring and Safety Precautions
Emphasizes safety for hazardous voltage, capacitors, live components, and using copper conductors.
VIII- Pre-Start Checkout
Wiring Connections and Compressor Safety
Details wiring connections, relays, emergency stop, and compressor safety during connections.
VIII- Pre-Start Checkout
Unit Voltage and Phasing Checks
Explains checking unit voltage, calculating imbalance, and verifying electrical phase sequence for rotation.
VIII- Pre-Start Checkout
Water Flow Rates and CH530 Setup
Covers water flow rates, pressure drop measurement, and using TechView for CH530 settings.
IX- Unit Start-Up Procedures
Initial Unit Start-Up Sequence
Outlines the step-by-step procedure for starting the unit, including safety checks and refrigerant verification.
Refrigerant Charge and Subcooling Checks
Details checking refrigerant pressure, subcooling, and adding refrigerant if necessary.
IX- Unit Start-Up Procedures
Seasonal Start-Up and System Restart
Provides procedures for seasonal start-up and restarting after extended shutdown, including water checks.
Temporary Shutdown and Restart
Explains the correct procedure for temporarily shutting down and restarting the unit using CH530 controls.
X- Periodic Maintenance
Periodic Maintenance Tasks
Details periodic maintenance tasks: checking pressures, sight glass, coils, oil levels, and lab analysis.
Electrical Safety and Component Checks
Stresses safety for hazardous voltage and checks for electrical connections and other components.
X- Periodic Maintenance
RTAC Unit Configuration and Logging
Guides on logging unit configuration settings, setpoints, compressor data, and nameplate info using TechView.
X- Periodic Maintenance
RTAC Chiller Log Data Entry
Presents a log format for recording chiller operating data over time, including chiller, circuit, and compressor tabs.
XI- Maintenance Procedures
Refrigerant and Oil Charge Management
Explains correct refrigerant/oil charge importance and lists symptoms of under/overcharging.
R134a Field Charging and Safety
Provides procedures for field charging refrigerant and emphasizes safety warnings for voltage and capacitors.
Factory Initial Refrigerant Charging
Details initial refrigerant charging, including hose attachment, EXV verification, and vacuum procedures.
XI- Maintenance Procedures
Field Refrigerant Charging and Subcooling
Outlines adding refrigerant charge and ensuring proper subcooling, including isolated charge procedures.
High and Low Side Charge Isolation
Describes methods for isolating refrigerant charge on high or low sides for maintenance.
XI- Maintenance Procedures
Refrigerant Filter Replacement
Provides steps for replacing the refrigerant filter element, including safety and handling.
Oil System and Charging Procedures
Explains the oil system, charging issues, and critical oil charging procedures.
XI- Maintenance Procedures
Compressor Replacement Procedure
Guides on replacing a compressor: isolating refrigerant, disconnecting power, evacuating, and installing.
XII- Wiring Diagram
Wiring Diagram M&L, Y-D, Circuit 1
Presents the wiring diagram for Circuit 1, covering motor connections and Y-D starting.
XII- Wiring Diagram
Wiring Diagram M&L, Y-D, Circuit 2
Displays the wiring diagram for Circuit 2, showing motor connections and Y-D starting.
XII- Wiring Diagram
Wiring Diagram 3&4 Length, Length 1A, Y-D
Details wiring for 3&4 length units, Length 1A, with Y-D starting configurations.
XII- Wiring Diagram
Wiring Diagram 3&4 Length, Length 1B, Y-D
Presents wiring for 3&4 length units, Length 1B, with Y-D starting configurations.
XII- Wiring Diagram
Wiring Diagram 3 Length, Length 2A, Y-D
Shows wiring for 3 length units, Length 2A, with Y-D starting configurations.
XII- Wiring Diagram
Wiring Diagram Fan, 3 Length, Length 2
Details wiring diagrams for fan components in 3 length units, Length 2 configurations.
XII- Wiring Diagram
Wiring Diagram Fan, Medium, 140&155 Std
Presents wiring diagrams for medium fans in 140&155 Std units.
XII- Wiring Diagram
Wiring Diagram Fan, Medium, All Others
Shows wiring diagrams for medium fans in other unit types.
XII- Wiring Diagram
Wiring Diagram Fan, Big (225&250 Prem)
Details wiring diagrams for big fan configurations in 225&250 Prem units.
XII- Wiring Diagram
Wiring Diagram Fan, 3&4 Length, Circuit 1, Low Voltage
Presents wiring diagrams for fan components in 3&4 length units, Circuit 1 low voltage.
XII- Wiring Diagram
Wiring Diagram Fan, 3&4 Length, Circuit 1, High Voltage
Shows wiring diagrams for fan components in 3&4 length units, Circuit 1 high voltage.
XII- Wiring Diagram
Wiring Diagram Fan, 3 Length, Circuit 1, 250T, 50Hz, Std
Details wiring diagrams for fan components in 3 length units, Circuit 1, 250T, 50Hz, Std.
XII- Wiring Diagram
Wiring Diagram Controls, M&L
Presents wiring diagrams for control components and M&L configurations.
XII- Wiring Diagram
Wiring Diagram Controls, 3&4 Length, Circuit 1
Details wiring diagrams for control components in 3&4 length units, Circuit 1.
XII- Wiring Diagram
Wiring Diagram Controls/Legend/Bus, Circuit 2
Shows wiring diagrams for controls, legends, and bus connections for Circuit 2.
XII- Wiring Diagram
Wiring Diagram Legend/LLID Bus, M&L
Presents wiring diagrams with legends and LLID bus connections for M&L configurations.
XII- Wiring Diagram
Wiring Diagram Legend/LLID Bus, 3&4 Length, Circuit 1
Details wiring diagrams with legends and LLID bus connections for 3&4 length units, Circuit 1.
XII- Wiring Diagram
Wiring Diagram Fan, M&L, Inverters
Shows wiring diagrams for fan components with M&L configurations and inverters.
XII- Wiring Diagram
Component Location Diagram, 2 Length
Illustrates component locations for 2 length units, showing different views and connections.
XII- Wiring Diagram
Component Location Diagram, 3 Length
Depicts component locations for 3 length units, with various views and connection details.
XII- Wiring Diagram
Field Wiring Diagram, 3&4 Length, Dual Input
Provides field wiring for 3&4 length units with dual inputs, including safety and connection notes.
XII- Wiring Diagram
Field Layout Diagram, All Units - Part 1
Illustrates field wiring layout for all units, Part 1, showing controls and inputs.
XII- Wiring Diagram
Field Layout Diagram, All Units - Part 2
Continues field layout for all units, Part 2, detailing wire size ranges and fuse sizes.
XII- Wiring Diagram
Field Layout Diagram, All Units
Presents a comprehensive field layout diagram for all units, illustrating component placement and wiring.
XIII- Standard Conversion Table
Unit Conversion Factors
Provides conversion factors for volume, flow, velocity, pressure, power, and temperature units.
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