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Table of Contents
Safety .............................................................................................................................................. 6
LC Base Model Description............................................................................................................ 8
General Description ...................................................................................................................... 12
Receiving Unit ........................................................................................................................... 12
Chiller ........................................................................................................................................ 12
Wiring Diagrams ....................................................................................................................... 13
General Maintenance ................................................................................................................. 13
Primary Pumping Package ........................................................................................................ 14
Glycol ........................................................................................................................................ 14
Compression/Expansion Tank ................................................................................................... 14
Pressure Relief Valve ................................................................................................................ 14
Manual and Automatic Air Vent ............................................................................................... 14
Dual Pumps ............................................................................................................................... 15
Differential Pressure Gauge and Thermometers ....................................................................... 15
Pipe Insulation ........................................................................................................................... 15
Installation..................................................................................................................................... 15
Lifting the Unit .......................................................................................................................... 15
Locating the Unit ....................................................................................................................... 15
Water Connection ...................................................................................................................... 16
Mounting Isolation .................................................................................................................... 16
Access Doors ............................................................................................................................. 16
Low Ambient Operation ............................................................................................................ 16
LAC Valve ............................................................................................................................. 17
Condenser Flooding ............................................................................................................... 18
Electrical .................................................................................................................................... 18
Startup ........................................................................................................................................... 19
Maintenance .................................................................................................................................. 20
General ...................................................................................................................................... 20
Compressors .............................................................................................................................. 20
Refrigerant Filter Driers ............................................................................................................ 20
Adjusting Refrigerant Charge ................................................................................................... 20
Lubrication ................................................................................................................................ 23
Service ....................................................................................................................................... 23
Replacement Parts ..................................................................................................................... 23
AAON - Longview Warranty, Service and Parts Department .................................................. 23
Warranties ................................................................................................................................. 23
Condenser Tube Inspection ....................................................................................................... 23
Pump Operation ......................................................................................................................... 23
Maintenance Recommendations ............................................................................................... 24
Access Doors ............................................................................................................................. 24
Pump Bearings - Lubrication .................................................................................................... 24
Air Inlet ..................................................................................................................................... 24
Propeller Fans and Motors ........................................................................................................ 24
Recommended Annual Inspection ............................................................................................ 24
Mechanical Cleaning ................................................................................................................. 24
