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Table of Contents
AAON® RN Series E Cabinet Features and Options Introduction ................................................. 6
Safety .............................................................................................................................................. 7
RN Series E Cabinet Feature String Nomenclature ................................................................ 13
General Information ...................................................................................................................... 23
Codes and Ordinances ............................................................................................................ 24
Receiving Unit .......................................................................................................................... 24
Storage ...................................................................................................................................... 25
Wiring Diagrams ....................................................................................................................... 25
Installation..................................................................................................................................... 25
Locating Units ........................................................................................................................... 25
Setting the Curb ........................................................................................................................ 26
Lifting the Unit ......................................................................................................................... 27
Duct Connection ....................................................................................................................... 28
Outside Air Rain Hood ............................................................................................................. 29
End Flashing Installation .......................................................................................................... 29
Electrical ................................................................................................................................... 30
Variable Speed Compressors ................................................................................................ 32
Thermostat Control Wiring ................................................................................................... 32
Condensate Drain Piping .......................................................................................................... 33
Draw-Through Coils ................................................................................................................. 34
Startup ........................................................................................................................................... 35
Filters ........................................................................................................................................ 35
Supply Fans ............................................................................................................................... 35
Adjusting Refrigerant Charge ................................................................................................... 36
Checking Liquid Sub-Cooling .............................................................................................. 36
Checking Evaporator Superheat............................................................................................ 36
Adjusting Sub-cooling and Superheat Temperatures............................................................ 37
Freeze Stat Startup .................................................................................................................... 38
Condenser Fan Electronically Commutated Motor (ECM) Startup ......................................... 40
VFD Controlled Condenser Fan Startup ................................................................................... 40
Operation....................................................................................................................................... 41
Thermostat Operation ............................................................................................................... 41
Packaged DX Cooling Operation and Control ......................................................................... 41
Gas Heater Operation ................................................................................................................ 41
Electric Heating Operation ....................................................................................................... 42
Steam or Hot Water Preheating and Heating Operation ........................................................... 42
Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 42
Maintenance .................................................................................................................................. 42
Supply Fans ............................................................................................................................... 42
DX Cooling ............................................................................................................................... 42
Condensate Drain Pans ............................................................................................................. 42
Brazed Plate Heat Exchanger Cleaning .................................................................................... 43
E-Coated Coil Cleaning ............................................................................................................ 43
Microchannel Coil Cleaning ..................................................................................................... 44
Options .......................................................................................................................................... 46