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Trane Manuals
Chiller
RTAA-100
Installation & maintenance manual
Trane RTAA-100 Installation & Maintenance Manual
R series air-cooled rotary liquid chillers
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Table Of Contents
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
General Information
Unit Identification - Nameplates
Standatd Unit Nameplate
Pump Package Unit Nameplate
Unit Inspection
Inspection Checklist
Loose Parts Inventory
Unit Description
General RTAA Mechanical Specifications
Model Number Coding System
Installation — Mechanical
Installation Responsibilities
Storage
Location Requirements
Foundation
RTAA Rigging and Lifting Weights – Packaged Unit
RTAA Rigging and Lifting Weights – Remote Evaporator
RTAA Rigging and Lifting Weights –Pump Package Aluminum Fins
RTAA Rigging and Lifting Weights –Pump Package Copper Fins
Clearances
Additional Location Requirements for Remote Evaporator Only
Rigging
Lifting Procedure
Dimensions and Clearances for RTAA Packaged Unit 70 – 125 Tons
Remote Evaporator Dimensions, RTAA 70 – 125 Tons
Remote Evaporator Dimensions, RTAA 110 – 125 Tons
Unit Isolation
Direct Mounting
Neoprene Isolators
Unit Leveling
Water Piping
Isolator Placement for Typical RTAA Packaged Unit 70 – 125 Tons
Isolator Placement for RTAA with Remote Evaporator
Evaporator Water Piping
Evaporator Piping Components
Entering Chilled Water Piping
Leaving Chilled Water Piping Air Vents (to Bleed Air from System)
Suggested Piping for Typical RTAA Evaporator
Evaporator Drain
Chilled Water Flow Switch
Water Treatment
Customer Note
Water Pressure Gauges
RTAA Evaporator Water Pressure Drop
Water Pressure Relief Valves
Freeze Protection
System Configuration and Interconnecting Refrigerant Piping
Installation - Remote Evaporator
Remote Evaporator Installation
Refrigerant Circuit Identification
RTAA Circuit Capacities (Nominal Tons)
Equivalent Lengths of Non-Ferrous Valves and Fittings (Feet)
Liquid Line Sizes
Line Sizing
Liquid Line Sizing Steps
Additional Suction Accumulator Line
Example Liquid Line Sizing
Suction Line Sizing Steps
Liquid Line Sizing Example
Example Suction Line Sizing
Suction Accumulator Sizing
Top View
Side View
Piping Installation Procedures
Refrigerant Sensors
Refrigerant Sensor Mounting and Wiring
Leak Test and Evacuation
Refrigerant and Additional Oil Charge
Refrigerant Charge Determination
System Refrigerant Charge
Oil Charge Determination
Example: Refrigerant Charge Computation
Field-Installed Piping Charge
Relief Valve Venting
General Recommendations
Installation - Electrical
Electrical Data
Electrical Data - Pump Package Option
Installer-Supplied Components
Power Supply Wiring
Control Power Supply
Water Pump Power Supply
Interlock Wiring
Installation — Electrical
Typical RTAA Chiller Interlock
Alarm/Running/Maximum Capacity Outputs
Alarm/Running/Maximum Capacity Relay Output Configurations
Alarm/Running/Maximum Capacity Indicator Wiring
Alarm/Running/Maximum Capacity Contact Outputs
Alarm/Running/Maximum Capacity Menu Settings
Low Voltage Wiring
Emergency Stop (Normal Trip)
External Circuit Lockout
Ice Making Option
External Chilled Water Setpoint (CWS)
Resistor and Potentiometer
Input Values Vs. External Chilled Water Setpoint
External Current Limit Setpoint (CLS)
Input Values Vs. External Current Limit Setpoint
2-10 VDC Voltage Source Input
4-20 Ma Current Source Input
Optional Bidirectional Communications Link (BCL)
Communication Link Connection Procedure
Lontalk Communication Interface (LCI-C)
Remote Clear Language Display Installation Procedure
Remote CLD Mounting
Remote CLD Panel Wiring
Remote CLD Panel Mounting Holes and Electrical Access Knockouts
ICS Address Setting
Multiple Unit Operation
Refrigeration (Cooling) Cycle
Cycle Description
Operating Principles
RTAA Refrigeration System and Control Components
Compressor Description
Compressor Motor
Compressor Rotors
RTAA Refrigerant and Oil Diagram
Compressor Loading Sequence
Oil System Operation
Oil Separator
Compressor Bearing Oil Supply
Compressor Rotor Oil Supply
Female Unloader Valve
Oil Filter
Fan State at Circuit Startup
Controls Interface
Clear Language Display Keypad Overview
Select Report Group
Operator Interface Adaptive Control
Select Settings Group
Passwords
Select Report Group and Select Settings Group Flowcharts
Auto/Stop Keys
Power up
Diagnostics
Operational Features
Entering Evaporator Water Temperature
Current Limit Setpoint
Low Ambient Lockout
Current Overload Protection
Leaving Chilled Water Temperature Control
Chilled Water Reset (CWR)
Leaving Water Temperature Cutout
Low Refrigerant Temperature Cutout
Leaving Fluid Temperature Setpoints
Low Ambient Temperature Start
Low Refrigerant Temperature Cutout and Low Pressure Cutout Retry
Balanced Compressor Starts and Hours
Phase Imbalance Protection
Reverse Rotation Protection
Oil Failure Protection
DIP Switch Settings
IPC Address
Compressor Overload DIP Switch Settings
Mechanical Control Settings
Remote CLD Operation
Communication Failure
Pre-Start Checkout
Unit Voltage Power Supply
Unit Voltage Imbalance
Unit Voltage Phasing
Water System Flow Rates
Water System Pressure Drop
Clear Language Display Set-Up
Start-Up Procedures
Unit Sequence of Operation
System Superheat
System Subcooling
Temporary Shutdown and Restart
Unit Shutdown Procedures
Extended Shutdown Procedure
System Restart after Extended Shutdown
Periodic Maintenance
Weekly Maintenance
Monthly Maintenance
Annual Maintenance
RTAA Operator's Log
RTAA Log
Coil Cleaning
Chemical Cleaning Configuration
Maintenance
Chemically Cleaning the Evaporator
Oil Separator Level Check
Water Treatment
Oil Filter Change
System Oil Level Specifications
35 & 40 Ton Compressor Oil Filter Replacement Chart
50 & 60 Ton Compressor Oil Filter Replacement Chart
Refrigerant Charging and Recovery
Low Side Repairs
High Side Repair
Adding Refrigerant
Diagnostic Types (and Action)
Diagnostic Codes
Pump Package
Temporary Storage
Piping
Water Storage
Pre-Start Review and Inspection
Control Panel Features and Options
Connection Power
Pump Checkout Procedure
Control Panel Checkout
System Start-Up
C - Pump Curves before Impeller Trim
D - Pump Curves before Impeller Trim
E - Pump Curves before Impeller Trim
F - Pump Curves before Impeller Trim
Planned Shutdown
G - Pump Curves before Impeller Trim
Maintenance
Pump Package Troubleshooting
Pump Package Piping Schematic
Unit Wiring
Unit Electrical Data
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Quick Links
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Unit Identification - Nameplates
2
Model Number Coding System
Download this manual
Packaged Air-Cooled Chiller,
RTAA 70-125
Remote Evaporator
Air-Cooled Chiller,
RTAA 70-125
© American Standard Inc. 2005
Installation
Operation
Maintenance
®
Series R
Air-Cooled Rotary Liquid Chillers
Models RTAA
RTAA-70
RTAA-80
RTAA-90
September 2005
RTAA-100
RTAA-110
RTAA-125
RTAA-SVX01A-EN
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