7
Figure 25 - Rain Hood with Metal Mesh Filter Rack Installation ..............................................44
Figure 26 - Unit Utility Entry ..................................................................................................46
Figure 27 - Back View of Power Switch from Compressor and Control Compartment (6-50, 60,
and 70 ton Units) ....................................................................................................................46
Figure 28 - Back View of Utility Entry and Power Switch from Control Compartment (55, 65
and 75-140 ton Units) .............................................................................................................46
Figure 29 - Draw-Through Drain Trap.....................................................................................49
Figure 30 - Supply Fan Banding..............................................................................................52
Figure 31 - Plenum Fan Gap Tolerances ..................................................................................52
Figure 32 - Fan with the HUB on the Top and RET on the Bottom ...........................................53
Figure 33 - Bushing Mount Location .......................................................................................53
Figure 34 - RET with Pin in Groove 4 .....................................................................................53
Figure 35 - Fan HUB and RET Castings ..................................................................................53
Figure 36 - Assembled Fan .....................................................................................................54
Figure 37 - Back of the Fan.....................................................................................................54
Figure 38 - Pin Groove Location .............................................................................................55
Figure 39 - Pitch Pin Location.................................................................................................55
Figure 40 - Example Pitch Pin.................................................................................................55
Figure 41 - 9-25 and 30 ton Supply Fan ...................................................................................64
Figure 42 - Bolts which Connect Motor Mount to Blower Fan .................................................64
Figure 43 - Variable Capacity Compressor Controller ..............................................................72
Figure 44 - Compressor Controller Flash Code Details.............................................................73
Figure 45 - Evaporator Coil Access .........................................................................................74
Figure 46 - Removal of a Condenser Fan Assembly .................................................................75
Figure 47 - RPE-48-BD filter element .....................................................................................75
Figure 48 - Aluminum Energy Recovery Wheel ......................................................................81
Figure 49 - Aluminum ERW Purge Sector Location.................................................................81
Figure 50 - Polymer Energy Recovery Wheel ..........................................................................83
Figure 51 - Wheel Segment Removal Pattern...........................................................................88
Figure 52 - Defrost Timer .......................................................................................................92
Figure 53 - Temperature Dial ..................................................................................................92
Figure 54 - Preheat Controller .................................................................................................94
Figure 55 - RN Series Gas Heat Exchanger .............................................................................98
Figure 56 - Example 6-50, 60 & 70 ton through the Base Gas Piping...................................... 102
Figure 57 - Example 55, 65 and 75-140 ton for across the Roof Gas Piping ............................ 103
Figure 58 - Gas Heater Instructions ....................................................................................... 105
Figure 59 - Gas Heat Exchanger............................................................................................ 107
Figure 60 - RN Series 6-50, 60, and 70 ton Standard Filter Layouts........................................ 119
Figure 61 - RN Series 55, 65, 70-140 ton Standard Filter Layouts .......................................... 120
R90721 · Rev. H · 220113
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