Sterlco GC Series Central Chiller - Manual (Page 7)

GC Series Central Chillers Chapter 2: Functional Description 7 of 79
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides operation, installation, and maintenance instructions for air-, water-and
remote air-cooled central chillers. Model numbers are listed on the serial tag. Make sure you
know the model and serial number of your equipment before contacting the manufacturer for
parts or service.
Our central chiller models are designated by approximate output in kW of cooling (70, 90,
through 210) and the cooling method used: -W for water-cooled, and –R for remote-air
cooled.
2-2
General Description
Our central chillers are reliable, accurate, and easy to use process cooling units. They are
available in water- and remote air-cooled designs in a range of sizes from 70 kW through 210
kW (20 through 60 tons of refrigeration). All are shipped ready to use. (Remote air-cooled
chillers require field installation by qualified technicians.) In the standard configuration the
chiller basically consists of a compressor, condenser, evaporator, and a control platform. All
of these components, plus the other integral components to maintain the leaving fluid
temperature, are described throughout this Chapter as well as Chapters 3 and 4.
Standard range of operation is 20ºF to 80ºF (-7ºC to 27ºC) for applications using a
water/glycol mix and 45ºF to 80ºF (7º to 27ºC) for water only applications.
Typical Applications
This series of central chillers can be used in any application that needs a constant source of
cool process water. Typical applications include, but are not limited to, the following:
• Injection molding • Blow molding
• Extrusion • Thermoforming
• Machine tool • Metal plating
• Thermal spray • After-coolers (air compressors, dryers, etc.)
• Laser • Printing (offset, gravure, digita)
System Limitations
These packaged chillers should be chosen using the following criteria:
Process heat load – Choose the size of the chiller so that rated capacity is no greater than
10% more than the process heat load.