AAON CL SERIES - Page 56

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Table of Contents

Table of Contents2
Safety6
CL Series Feature String Nomenclature11
General Description14
- Unpacking14
Owner's Information14
- Warning14
- Wiring Diagrams15
- General Maintenance15
Installation15
- Lifting and Handling15
- Condenser Placement15
- Compressor Compartment Exhaust Fan15
- Table 1 - Service Clearances15
- Mounting Isolation16
- Access Doors16
- Standard Evacuation Instructions16
- Figure 1 - CU Evacuation Connections16
- Low Ambient & Modulating Reheat System Evacuation Instructions17
- Figure 2 - CU Evacuation Connections17
- Charging Refrigerant18
- Before Charging18
- Figure 3 - AHU Evacuation Connections18
- Checking Liquid Sub-Cooling19
- Checking Evaporator Superheat19
- Table 2 - Acceptable Refrigerant Circuit Values19
- Special Low Ambient Charging Instructions20
- Low Ambient Operation20
- Table 3 - % Charge to Flood Condenser Coil for Ambient below 70°F20
- LAC Valve21
- Figure 4 - Piping Schematic of Example System Using the LAC Valve21
- Electrical22
- Table 4 - Nameplate Voltage Markings & Tolerances22
- Refrigerant Piping Connections24
- Evaporative Condenser Field Piping Connections24
- Figure 5 - Refrigerant Piping Connections24
- Figure 6 - Evaporative Condenser Section Water Treatment Components25
Startup26
- Pre-Startup26
- Axial Flow Fans27
- Insert Blades28
Servicing and Maintenance29
- General29
- Compressors29
- Refrigerant Suction Line Filter29
- Suction Filter Removal Instructions29
- Refrigerant Liquid Line Filter Driers30
- Evaporator/Heat Exchangers30
- Lubrication30
- Service Information30
- Replacement Parts30
- AAON Technical Support30
- Table 5 - Liquid Line Filter Drier Pressure Drop30
- Severe Service31
- Safety31
- Performance32
- Warranties32
- Condenser Tube Inspection32
- Freeze Protection32
- Recirculating Water System32
Evaporative Condenser - Pre Start-Up32
- Cleanliness32
- Pump Operation32
- Running32
- Condenser Fan Motors33
- Water Make-Up Valve33
- Figure 7 - Water Level Sensor33
- Water Treatment System34
- Sequence of Operation34
Evaporative Condenser - Maintenance Requirements35
- Pump Maintenance35
- Fan Motor Maintenance35
- Access Doors35
- Bearings - Lubrication35
- Required Monthly Inspection35
- Mist Eliminators35
- Air Inlet35
- Stainless Steel Base Pan35
- Propeller Fans and Motors35
Evaporative Condenser - Water Quality36
- Recirculating Water Quality Guidelines36
- Mechanical Cleaning36
- Parts36
Air-Cooled Condenser36
- E-Coated Coil Cleaning36
- Table 6 - Water Quality36
Refrigerant Piping for the Cl Series39
- General39
- Determining Refrigerant Line Size39
- Equivalent Line Length39
- Liquid Line Sizing40
- Liquid Line Routing40
- Liquid Line Insulation40
- Liquid Line Guidelines40
- Liquid Line Accessories40
- Suction Line Sizing40
- Suction Line Routing40
- Suction Line Traps41
- Suction Line Insulation41
- Suction Line Guidelines41
- Figure 8 - Double Suction Riser41
- Suction Line Accessories42
- Hot Gas Bypass Line42
- Hot Gas Bypass Piping Considerations for Evaporator above Condensing Unit42
- Hot Gas Bypass Piping Considerations for Evaporator below Condensing Unit42
- Hot Gas Bypass Line Guidelines42
- Hot Gas Reheat Line42
- Figure 9 - Oil Return Piping42
- Hot Gas Reheat Line Guidelines43
- Figure 10 - Hot Gas Bypass Piping Diagram with Air Handler above Condenser44
- Figure 11 - Hot Gas Bypass Piping Diagram with Air Handler below Condenser45
- Figure 12 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser46
- Figure 13 - Hot Gas Reheat Piping Diagram with Air Handler below Condenser47
- Figure 14 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser and Field Installed Suction48
Line Accumulator48
Figure 15 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser and Field Installed Suction49
Line Accumulator49
Figure 16 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler above Condenser50
Figure 17 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler below Condenser51
Figure 18 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler Evaporator above Condenser and Field52
Installed Suction Line Accumulator52
Figure 19 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler below Condenser and Field Installed53
Suction Line Accumulator53
- Literature Change History58

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