Trane RTAC 250 Series User 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 qualied 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 specic
knowledge and training. Improperly installed, adjusted or altered equipment by an unqualied 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.
May 2014 RTAC-SVX002A-EN

Trane RTAC 250 Series Specifications

General

Brand	Trane
Model	RTAC 250 Series
Category	Chiller
Language	English

Summary

II- General Information

Safety Warnings and Cautions

Covers general safety warnings, cautions, and corrosion prevention.

Unit Description

III- Installation Mechanical

Installation Responsibilities

Outlines the contractor's responsibilities during unit installation.

Location Requirements

Foundation

Details requirements for providing a rigid, non-warping mounting foundation.

Clearances

Specifies recommended clearances for installation and maintenance access.

Unit Isolation and Leveling

Water Treatment and Gauges

Freeze Protection

Glycol Recommendations

Provides recommendations for glycol levels and refrigerant cutouts.

IV- Installation Electrical

General Electrical Recommendations

Covers code compliance, wiring diagrams, and copper conductor use.

Hazardous Voltage and Capacitor Safety

Critical safety warning about electrical power and capacitors.

Installer-Supplied Components

Power Supply Wiring

Chilled Water Flow (Pump) Interlock

Chilled Water Pump Control

Chilled Water Reset (CWR)

V- Operating Principles

Refrigeration Cycle Overview

Explains the refrigeration cycle of the RTAC chiller.

Refrigerant and Compressor Details

Discusses R134a refrigerant and the semi-hermetic rotary compressor.

Condenser, Subcooler, and Evaporator

Oil System Overview

Covers the lubrication system, oil separators, and oil circulation.

VI- Controls Interface

CH530 Control System Overview

Overview of the CH530 system, its components, and communication.

DynaView Interface Overview

Details the DynaView interface, its display, and functions.

Setpoint Management Overview

Lists available setpoints for review and modification.

Diagnostic Screen Access

Active Setpoint Subscreens

Setpoint List and Enumerated Setpoints

VIII- Pre-Start Checkout

Installation Checklist

A checklist to verify all installation procedures are complete.

Electrical Wiring Safety and Connections

Covers electrical safety warnings and connection requirements.

Unit Voltage and Phasing Verification

How to measure voltage, check imbalance, and verify phase sequence.

Water System Setup

Daily Unit Start-Up Sequence

IX- Unit Start-Up Procedures

Compressor Heater Operation

Emphasizes the importance of running compressor and oil separator heaters before starting.

Seasonal Unit Start-Up

Step-by-step guide for seasonal unit start-up procedures.

System Restart Procedures

Procedures for restarting the unit after an extended shutdown or temporary stop.

X- Periodic Maintenance

Maintenance Schedules

Outlines weekly, monthly, and annual maintenance procedures.

Configuration and Log Recording

XI- Maintenance Procedures

Refrigerant and Oil Charge Management

Importance of proper refrigerant and oil charge for unit performance.

Refrigerant Charging Procedures

Covers field and factory procedures for charging refrigerant.

Charge Isolation and Filter Replacement

Lubrication System and Oil Charging

Details the lubrication system and critical oil charging procedures.

Compressor Replacement

Step-by-step guide for replacing a compressor.