AAON SB series - Page 3

3
Table of Contents
AAON SB Series Features and Options Introduction..................................................................... 6
Safety .............................................................................................................................................. 7
SB Series Feature String Nomenclature ....................................................................................... 14
General Information ...................................................................................................................... 18
Codes and Ordinances .............................................................................................................. 18
Receiving Unit .......................................................................................................................... 19
Storage ...................................................................................................................................... 19
Direct Expansion (DX) Systems ............................................................................................... 19
Wiring Diagrams ....................................................................................................................... 20
Condensate Drain Pans ............................................................................................................. 20
Installation..................................................................................................................................... 21
Locating the Unit ...................................................................................................................... 21
Lifting and Handling the Unit ................................................................................................... 22
Unit Assembly .......................................................................................................................... 22
Refrigerant-to-Water Heat Exchanger Water Piping ................................................................ 25
Electrical ................................................................................................................................... 29
Duct Connection ....................................................................................................................... 33
Condensate Drain Piping .......................................................................................................... 33
Waterside Economizer .............................................................................................................. 34
Heating Coils ............................................................................................................................ 35
Energy Recovery Units ............................................................................................................. 35
Startup ........................................................................................................................................... 44
Supply Fans ............................................................................................................................... 45
Fan Air Flow Adjustment ......................................................................................................... 45
Filters ........................................................................................................................................ 45
Adjusting Refrigerant Charge ................................................................................................... 46
Freeze Stat Startup .................................................................................................................... 47
Operation....................................................................................................................................... 52
Refrigerant Detection System ................................................................................................... 52
Packaged DX Cooling Operation and Control ......................................................................... 52
Electric Heating Operation ....................................................................................................... 52
Steam or Hot Water Preheating Operation ............................................................................... 52
Maintenance .................................................................................................................................. 52
Refrigerant Removal and Evacuation ....................................................................................... 53
DX Cooling ............................................................................................................................... 54
Condensate Drain Pans ............................................................................................................. 54
E-Coated Coil Cleaning ............................................................................................................ 54
Supply Fans ............................................................................................................................... 56
Filter Replacement .................................................................................................................... 56
Phase and Brownout Protection Module .................................................................................. 57
Filter Information .......................................................................................................................... 59
Apendix A - Heat Exchanger Corrosion Resistance ..................................................................... 64
Maintenance Log (E-Coated Coil) ............................................................................................. 70