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CB-024
AAON CB-024 Manuals
Manuals and User Guides for AAON CB-024. We have
1
AAON CB-024 manual available for free PDF download: Installation Operation & Maintenance
AAON CB-024 Installation Operation & Maintenance (56 pages)
CB SERIES
Brand:
AAON
| Category:
Heat Pump
| Size: 1.93 MB
Table of Contents
Table of Contents
2
AAON CB Series Features and Options Introduction
5
Safety
6
CB Base Model and Features Description
10
General Description
11
Codes and Ordinances
11
Receiving Unit
11
Storage
12
Direct Expansion (DX) Condensing Units
12
Wiring Diagrams
13
General Maintenance
13
Installation
14
Lifting the Unit
14
Locating Unit
14
Figure 1 - Forklift Channels & Access Panel
14
Mounting Isolation
15
Access Panel
15
Table 1 - Recommended Elevation Minimums
15
Figure 2 - Condensing Unit Clearances
15
Electrical
16
Figure 3 - Utility Entry
16
Thermostat
17
Refrigerant Piping
18
General
18
Determining Refrigerant Line Size
18
Liquid Line Sizing
19
Suction Line Sizing
20
Figure 4 - Heat Pump Piping Schematic of Suction Vapor Flow down in Double Riser
21
Figure 5 - Heat Pump Piping Schematic of Discharge Vapor Flow up in Double Riser
21
Hot Gas Bypass Line
22
Hot Gas Reheat
22
Predetermined Line Sizes
23
Table 2 - Predetermined Line Sizes for CB Units with Two Step Compressors and R-410A
25
Figure 6 - Riser Height Versus Total Equivalent Line Length
25
Startup
26
Compressors
26
Charging Refrigerant & Adjusting Refrigerant Charge
27
Before Charging
27
Checking Liquid Sub-Cooling
27
Checking Evaporator Superheat
28
Adjusting Sub-Cooling and Superheat Temperatures
28
Table 3 - Acceptable Refrigeration Circuit Values
28
Air Flow
29
Table 4 - Performance Testing Air Flow Setpoints
29
Table 5 - R-410A Refrigerant Temperature-Pressure Chart
30
Operation
31
Thermostat Operation
31
Compressor
31
Variable Capacity Compressor Controller
31
Table 6 - Demand Signal Vs. Compressor Capacity Modulation
32
Figure 7 - Variable Capacity Compressor Controller
32
Table 7 - Thermistor Temperature Vs. Resistance Values
33
Figure 8 - Compressor Controller Flash Code Details
33
Low Ambient Operation
34
Figure 9 - Adjustable Fan Cycling Switch
34
LAC Valve
35
Figure 10 - Piping Schematic of Example System Using the LAC Valve
35
Condenser Flooding
36
Compressor Lockouts
36
Table 8 - Condenser Flooding
36
Figure 11 - Adjustable Compressor Lockout
36
Maintenance
37
Coils
37
E-Coated Coil Cleaning
37
DX Cooling
39
Condenser Fan Motor
39
Replacement Parts
39
Warranty, Service, and Parts Department
39
Refrigerant Piping Diagrams
40
Figure 12- A/C Only Piping, AHU above CU
40
Figure 13 - A/C Only Piping, AHU below CU
41
Figure 14 - Modulating Hot Gas Reheat Piping, AHU above CU
42
Figure 15 - Modulating Hot Gas Reheat Piping, AHU below CU
43
Figure 16 - Hot Gas Bypass Piping, AHU above CU
44
Figure 17 - Hot Gas Bypass Piping, AHU below CU
45
Figure 18 - Modulating Hot Gas Reheat with Hot Gas Bypass Piping, AHU above CU
46
Figure 19 - Modulating Hot Gas Reheat with Hot Gas Bypass Piping, AHU below CU
47
Figure 20 - Heat Pump Piping, AHU above CU
48
Figure 21 - Heat Pump Piping, AHU below CU
49
Figure 22 - Heat Pump with Modulating Hot Gas Reheat Piping, AHU above CU
50
Figure 23 - Heat Pump with Modulating Hot Gas Reheat, AHU below CU
51
CB Series Startup Form
52
Literature Change History
55
(Acp J00187)
56
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