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General| Model | RTAA-140 |
|---|---|
| Type | Air-Cooled Chiller |
| Cooling Capacity | 140 Tons |
| Compressor Type | Helical Rotary |
| Refrigerant | R-134a |
| Power Supply | 460V/3/60Hz |
Describes the Series R rotary liquid chillers.
Verifies unit correctness and equipment status upon delivery.
Checklist to protect against transit damage and ensure unit integrity upon receipt.
Guidelines for selecting an appropriate installation site, including noise considerations.
Requirements for a rigid, level foundation to support the unit's operating weight.
Specifies space needed for installation, maintenance, and service access points.
Instructions for flushing and connecting chilled water piping to the evaporator.
Methods to protect the unit from freezing in subfreezing ambient temperatures.
Explains how system configuration and elevation affect line sizing and charges.
Provides examples and tables for sizing liquid refrigerant lines.
How to determine the correct refrigerant charge using tables and system checks.
Method to calculate and add the required oil charge for field piping.
Advises on wiring practices, NEC compliance, and using copper conductors.
Details requirements for sizing and selecting power supply wiring.
Details wiring for pump interlock and external start/stop signals for system control.
Wiring for single circuit lockout based on external contact closure.
Procedures for flushing and connecting all unit water piping.
Steps for connecting unit power, control power, and auxiliary wiring.
Details the compressor's motor, rotors, and slide valve.
Describes the information displayed on the unit's digital interface.
Procedure for temporarily shutting down and restarting the unit.
Steps for taking the unit out of service for an extended period.
How UCM monitors compressor current for overload protection.
UCM control of setpoint and compressor modulation for LWT.
Requirements for unit voltage and power supply to prevent component malfunction.
How to calculate and the importance of limiting voltage imbalance.
Ensuring correct electrical phase sequence to prevent equipment damage.
Step-by-step procedures for starting the unit after installation.
How to measure and what to expect for normal system superheat.
How to measure and what to expect for normal system subcooling.
General maintenance procedures requiring electrical power disconnection.
