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CL SERIES
AAON CL SERIES - User Manual
60 pages
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CL SERIES
Condensing Units
Installation, Operation
& Maintenance
2
Table of Contents
Main Page
Table of Contents
2
Safety
6
CL Series Feature String Nomenclature
11
General Description
14
Unpacking
14
Owner's Information
14
Warning
14
Wiring Diagrams
15
General Maintenance
15
Installation
15
Lifting and Handling
15
Condenser Placement
15
Compressor Compartment Exhaust Fan
15
Table 1 - Service Clearances
15
Mounting Isolation
16
Access Doors
16
Standard Evacuation Instructions
16
Figure 1 - CU Evacuation Connections
16
Low Ambient & Modulating Reheat System Evacuation Instructions
17
Figure 2 - CU Evacuation Connections
17
Charging Refrigerant
18
Before Charging
18
Figure 3 - AHU Evacuation Connections
18
Checking Liquid Sub-Cooling
19
Checking Evaporator Superheat
19
Table 2 - Acceptable Refrigerant Circuit Values
19
Special Low Ambient Charging Instructions
20
Low Ambient Operation
20
Table 3 - % Charge to Flood Condenser Coil for Ambient below 70°F
20
LAC Valve
21
Figure 4 - Piping Schematic of Example System Using the LAC Valve
21
Electrical
22
Table 4 - Nameplate Voltage Markings & Tolerances
22
Refrigerant Piping Connections
24
Evaporative Condenser Field Piping Connections
24
Figure 5 - Refrigerant Piping Connections
24
Figure 6 - Evaporative Condenser Section Water Treatment Components
25
Startup
26
Pre-Startup
26
Axial Flow Fans
27
Insert Blades
28
Servicing and Maintenance
29
General
29
Compressors
29
Refrigerant Suction Line Filter
29
Suction Filter Removal Instructions
29
Refrigerant Liquid Line Filter Driers
30
Evaporator/Heat Exchangers
30
Lubrication
30
Service Information
30
Replacement Parts
30
AAON Technical Support
30
Table 5 - Liquid Line Filter Drier Pressure Drop
30
Severe Service
31
Safety
31
Performance
32
Warranties
32
Condenser Tube Inspection
32
Freeze Protection
32
Recirculating Water System
32
Evaporative Condenser - Pre Start-Up
32
Cleanliness
32
Pump Operation
32
Running
32
Condenser Fan Motors
33
Water Make-Up Valve
33
Figure 7 - Water Level Sensor
33
Water Treatment System
34
Sequence of Operation
34
Evaporative Condenser - Maintenance Requirements
35
Pump Maintenance
35
Fan Motor Maintenance
35
Access Doors
35
Bearings - Lubrication
35
Required Monthly Inspection
35
Mist Eliminators
35
Air Inlet
35
Stainless Steel Base Pan
35
Propeller Fans and Motors
35
Evaporative Condenser - Water Quality
36
Recirculating Water Quality Guidelines
36
Mechanical Cleaning
36
Parts
36
Air-Cooled Condenser
36
E-Coated Coil Cleaning
36
Table 6 - Water Quality
36
Refrigerant Piping for the Cl Series
39
General
39
Determining Refrigerant Line Size
39
Equivalent Line Length
39
Liquid Line Sizing
40
Liquid Line Routing
40
Liquid Line Insulation
40
Liquid Line Guidelines
40
Liquid Line Accessories
40
Suction Line Sizing
40
Suction Line Routing
40
Suction Line Traps
41
Suction Line Insulation
41
Suction Line Guidelines
41
Figure 8 - Double Suction Riser
41
Suction Line Accessories
42
Hot Gas Bypass Line
42
Hot Gas Bypass Piping Considerations for Evaporator above Condensing Unit
42
Hot Gas Bypass Piping Considerations for Evaporator below Condensing Unit
42
Hot Gas Bypass Line Guidelines
42
Hot Gas Reheat Line
42
Figure 9 - Oil Return Piping
42
Hot Gas Reheat Line Guidelines
43
Figure 10 - Hot Gas Bypass Piping Diagram with Air Handler above Condenser
44
Figure 11 - Hot Gas Bypass Piping Diagram with Air Handler below Condenser
45
Figure 12 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser
46
Figure 13 - Hot Gas Reheat Piping Diagram with Air Handler below Condenser
47
Figure 14 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser and Field Installed Suction
48
Line Accumulator
48
Figure 15 - Hot Gas Reheat Piping Diagram with Air Handler above Condenser and Field Installed Suction
49
Line Accumulator
49
Figure 16 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler above Condenser
50
Figure 17 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler below Condenser
51
Figure 18 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler Evaporator above Condenser and Field
52
Installed Suction Line Accumulator
52
Figure 19 - Reheat/Hot Gas Bypass Piping Diagram with Air Handler below Condenser and Field Installed
53
Suction Line Accumulator
53
Literature Change History
58
Other manuals for AAON CL SERIES
Installation, Service And User Guide
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AAON CL SERIES Specifications
General
Category
Heat Pump
Series
CL SERIES
Refrigerant
R-410A
Voltage Options
208/230/460/575
Stages
2
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