AAON RN Series Installation Operation & Maintenance page 4

Supply Fans........................................................................................................................59
Power Exhaust Motor and Belt Removal .............................................................................60
DX Cooling ........................................................................................................................61
Condensate Drain Pans .......................................................................................................61
Brazed Plate Heat Exchanger Cleaning ................................................................................61
E-Coated Coil Cleaning ......................................................................................................62
Microchannel Coil Cleaning................................................................................................63
Options ..................................................................................................................................65
Heating Coils......................................................................................................................65
Chilled Water Coil ..............................................................................................................66
Packaged Direct Expansion (DX) Units ...............................................................................67
Variable Capacity Compressor Controller ............................................................................68
Evaporator Coil (11-25 and 30 ton) .....................................................................................70
Condenser Fans (11-25 and 30 ton) .....................................................................................70
Refrigerant-to-Water Heat Exchanger..................................................................................71
Water-Source Heat Pump Applications ............................................................................71
Open Loop Applications..................................................................................................71
Freezing Water in the Heat Exchanger .............................................................................72
Water Piping...................................................................................................................73
Energy Recovery Units .......................................................................................................75
Aluminum Energy Recovery Wheel.................................................................................76
Polymer Energy Recovery Wheel ....................................................................................78
Energy Recovery Wheel General Cleaning ......................................................................85
Energy Recovery Wheel Defrost Timer Setting ...............................................................87
Gas or Electric Heating .......................................................................................................88
Electric Preheat...................................................................................................................90
Status Display Screens ....................................................................................................90
System Setting Screens ...................................................................................................91
LED Flash Alarm Codes .................................................................................................92
Operation........................................................................................................................93
Gas Heating........................................................................................................................93
Piping Sizing Examples...................................................................................................95
Inlet and Manifold Pressures ...........................................................................................95
Gas Pressure Regulator & Overpressure Protection Device ...............................................95
Piping Supports...............................................................................................................95
Additional Gas Piping Considerations ..............................................................................96
Leak Testing ...................................................................................................................98
Gas Heater Operating Instructions ...................................................................................99
Gas Heating Maintenance .............................................................................................. 100
Gas Heat Exchanger Removal ....................................................................................... 100
Phase and Brownout Protection Module ............................................................................ 102
Filter Replacement............................................................................................................ 104
Replacement Parts ............................................................................................................ 107
Appendix A - Heat Exchanger Corrosion Resistance.............................................................. 108
Appendix B - Thermistor Temperature vs. Resistance Values ................................................ 110
RNA Series Startup Form ..................................................................................................... 111
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