AAON H3 Series Installation Operation & Maintenance

AAON H3 Series Installation Operation & Maintenance Manual pdf 2 page image

2Table of ContentsSafety .............................................................................................................................................. 6H3 Base Model Description .......................................................................................................... 11General Information ...................................................................................................................... 17Codes and Ordinances ............................................................................................................... 18Receiving Unit........................................................................................................................... 18Storage ....................................................................................................................................... 19Wiring Diagrams ....................................................................................................................... 19Installation..................................................................................................................................... 19Locating the Unit ....................................................................................................................... 19Lifting and Handling the Unit ................................................................................................... 23Unit Assembly ........................................................................................................................... 23Control Box ............................................................................................................................... 25Electrical .................................................................................................................................... 26Duct Connection ........................................................................................................................ 29Condensate Drain Pans.............................................................................................................. 29Condensate Drain Piping ........................................................................................................... 30Startup ........................................................................................................................................... 31Filters ......................................................................................................................................... 31Supply Fans ............................................................................................................................... 31Fan Air Flow Adjustment .......................................................................................................... 31Operation....................................................................................................................................... 33Thermostat Operation ................................................................................................................ 33Split System DX Cooling Operation and Control ..................................................................... 33Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 33Steam or Hot Water Preheating Operation ................................................................................ 33Electric Heating Operation ........................................................................................................ 33Maintenance .................................................................................................................................. 33DX Cooling ............................................................................................................................... 34Condensate Drain Pans.............................................................................................................. 34Winterizing Coils ...................................................................................................................... 34Supply Fans ............................................................................................................................... 34E-Coated Coil Cleaning ............................................................................................................ 34Options .......................................................................................................................................... 36Heating Coils ............................................................................................................................. 36Chilled Water Coil .................................................................................................................... 37Direct Expansion (DX) Systems ............................................................................................... 38Evaporator Coil ......................................................................................................................... 39Thermal Expansion Valve ......................................................................................................... 39Hot Gas Reheat .......................................................................................................................... 39Hot Gas Bypass ......................................................................................................................... 39Purge Circuit ............................................................................................................................. 40Adjusting Refrigerant Charge ................................................................................................... 40Energy Recovery Units ............................................................................................................. 48Initial Mechanical Check and Setup ...................................................................................... 48