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Table of Contents
Safety .............................................................................................................................................. 8
RN Series Feature String Nomenclature ....................................................................................... 13
General Information ...................................................................................................................... 24
Codes and Ordinances .............................................................................................................. 24
Receiving Unit .......................................................................................................................... 25
Packaged Direct Expansion (DX) Units ................................................................................... 26
Gas or Electric Heating ............................................................................................................. 27
Wiring Diagrams ....................................................................................................................... 28
Condensate Drain Pan ............................................................................................................... 28
Installation..................................................................................................................................... 29
Locating Units ........................................................................................................................... 29
Setting the Curb ........................................................................................................................ 30
Forklifting the Unit (6-25 and 30 ton) ...................................................................................... 36
Lifting the Unit ......................................................................................................................... 36
Duct Connection ....................................................................................................................... 39
Seismic Curb Installation .......................................................................................................... 40
Outside Air Rain Hood ............................................................................................................. 44
End Flashing Installation .......................................................................................................... 45
Metal Mesh Filters (6-25 and 30 ton Units) ............................................................................. 46
Electrical ................................................................................................................................... 47
Variable Speed Compressors ................................................................................................ 49
Thermostat Control Wiring ................................................................................................... 49
Gas Heating ............................................................................................................................... 50
Piping Sizing Examples ........................................................................................................ 51
Inlet and Manifold Pressures ................................................................................................ 52
Gas Pressure Regulator & Overpressure Protection Device ................................................. 52
Piping Supports ..................................................................................................................... 52
Additional Gas Piping Considerations .................................................................................. 52
Leak Testing .......................................................................................................................... 53
Refrigerant-to-Water Heat Exchanger ...................................................................................... 54
Water-Source Heat Pump Applications ................................................................................ 54
Open Loop Applications ....................................................................................................... 54
Freezing Water in the Heat Exchanger ................................................................................. 55
Water Piping ......................................................................................................................... 56
Condensate Drain Piping .......................................................................................................... 58
Heating Coils ............................................................................................................................ 59
Chilled Water Coil .................................................................................................................... 59
Electric Preheat ......................................................................................................................... 60
Status Display Screens .......................................................................................................... 60
System Setting Screens ......................................................................................................... 61
LED Flash Alarm Codes ....................................................................................................... 63
Operation ............................................................................................................................... 63
Energy Recovery Units ............................................................................................................. 64
Startup ........................................................................................................................................... 72
Supply Fans ............................................................................................................................... 72
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