Specifications

4 Catalog WSC/WDC-4

Wide Choice of Capacities and Efficiencies

The range of capacities and chiller types shown in the following chart gives the plant

designer the ability to pick and chose the exact capacity, optimum chiller type and

efficiency for either a single or multiple unit chiller plant. This flexibility is also a

tremendous asset for replacement chiller applications.

McQuay Offers the Widest Choice of ARI Certified, Ozone Safe Centrifugal Chillers

TONS

Single Compressor Chillers

Single Compressor with VFD

Dual Compressor Chillers

Dual Compressor with VFD

Heat Recovery

Templifier Water Heater

Variable Chilled Water Flow

Tower Economizer Cycle

0 500 1000 1500 2000 2500 3000

NOTE: The upper capacity limit for ARI certification on 60 Hz service is 2,000 tons, on 50 Hz service, the range is

703kW to 3516 kW. McQuay dual compressor chillers with or without VFD are available up to 2,500 tons.

MicroTech II

Controller Makes a Difference

Operator Interface Touchscreen

McQuay’s 12-inch super VGA touchscreen is truly “operator

friendly”. All important unit operating data is clearly

displayed and selectable at a touch of the screen. Setpoint

changes are easy to accomplish and to monitor, reducing

errors. Trend data of important parameters and alarm

history can be downloaded from a USB port located in the

adjacent unit control panel.

Easy BAS Integration

McQuay’s exclusive Protocol Selectability™ feature provides

a factory-installed communication module. You select

BACnet®, L

ONMARK® or Modbus® communications for

control and monitoring information to be sent to your BAS,

without the need for costly gateways.

Distributed Control

Each chiller has a microprocessor controller for unit functions plus a separate microprocessor for

each compressor. Should the operator interface panel and/or the unit controller be unavailable,

the compressor controller(s) will maintain chiller operation, greatly increasing unit reliability.