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Table of Contents
Safety .............................................................................................................................................. 6
H3/V3 Base Model Description .................................................................................................... 10
General Information ...................................................................................................................... 16
Codes and Ordinances ............................................................................................................... 16
Receiving Unit ........................................................................................................................... 17
Storage ....................................................................................................................................... 17
Direct Expansion (DX) Systems ............................................................................................... 17
Wiring Diagrams ....................................................................................................................... 18
Condensate Drain Pans .............................................................................................................. 18
Installation..................................................................................................................................... 18
Locating the Unit ....................................................................................................................... 19
Lifting and Handling the Unit ................................................................................................... 22
Electrical .................................................................................................................................... 22
Duct Connection ........................................................................................................................ 25
Condensate Drain Piping ........................................................................................................... 25
Heating Coils ............................................................................................................................. 26
Chilled Water Coil .................................................................................................................... 26
Electric Preheat ......................................................................................................................... 26
Refrigerant Piping ..................................................................................................................... 26
Determining Refrigerant Line Size ........................................................................................... 28
Startup ........................................................................................................................................... 32
Supply Fans ............................................................................................................................... 32
Fan Air Flow Adjustment .......................................................................................................... 32
Filters ......................................................................................................................................... 34
Adjusting Refrigerant Charge ................................................................................................... 34
Operation....................................................................................................................................... 37
Electric Heating Operation ........................................................................................................ 37
Steam or Hot Water Preheating Operation ................................................................................ 37
Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 37
Modulating Electric Preheat ...................................................................................................... 37
Maintenance .................................................................................................................................. 37
DX Cooling ............................................................................................................................... 37
Condensate Drain Pans .............................................................................................................. 37
E-Coated Coil Cleaning ............................................................................................................ 38
Supply Fans ............................................................................................................................... 39
Filter Replacement .................................................................................................................... 39
Replacement Parts ..................................................................................................................... 40
AAON-Longview Customer Service Department .................................................................... 40
Filter Information .......................................................................................................................... 41
Refrigerant Piping Diagrams ........................................................................................................ 52
H3/V3 Series Startup Form ........................................................................................................... 64
Maintenance Log .......................................................................................................................... 69
Literature Change History............................................................................................................. 70
