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AAON RZ Series Manuals
Manuals and User Guides for AAON RZ Series. We have
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AAON RZ Series manuals available for free PDF download: Installation Operation & Maintenance
AAON RZ Series Installation Operation & Maintenance (96 pages)
Packaged Rooftop Units & Outdoor Air Handling Units
Brand:
AAON
| Category:
Air Handlers
| Size: 4.85 MB
Table of Contents
Table of Contents
3
AAON® RZ Series Features and Options Introduction
7
Safety
8
RZ Series Feature String Nomenclature
14
General Information
25
Codes and Ordinances
26
Receiving Unit
26
Storage
27
Packaged Direct Expansion (DX) Units
27
Gas or Electric Heating
28
Table 1 - Electric Heating Capacities
28
Wiring Diagrams
29
Condensate Drain Pan
29
Installation
29
Locating Units
29
Table 2 - RZ 45-140 Ton Gas Heating Capacities
29
Table 3 - RZ 145-240 Ton Gas Heating Capacities
29
Curb Installation
30
Table 4 - Air-Cooled Condenser Unit Clearances 45-240 Ton
30
Table 5 - Evaporative Condenser Unit Clearances 45-240 Ton
30
Figure 1 - RZ Series Unit Orientation
30
Lifting the Unit
31
Figure 2 - Base Rail Lifting Lug
31
Figure 3 - 4 Point Lift RZ Series Air-Cooled Condenser Unit
32
Figure 4 - 8 Point Lift RZ Series Air-Cooled Condenser Unit
33
Duct Connection
34
Table 6 - Mounting Dimensions
34
Figure 5 - Curb Mounting
34
Figure 6 - Curb Detail
34
Figure 7 - Curb & Steel Mounting Rail with Dimensions
34
Reassembling Split Units
35
Figure 8 - Unit Base and Sides
35
Figure 9 - Unit Roof Flange Splice Detail
35
Refrigeration Split Installation Procedure
36
Electrical Connection of Split Units
36
Figure 10 - Staggered Assembly for Refrigeration Pipes
36
Outside Air Rain Hood
37
End Flashing Installation
37
Figure 11 - Air Hood Shown in the Open Position
37
Figure 12 - Factory Supplied End Flashings
37
Vestibule Exhaust Fan
38
Figure 13 - Vestibule Exhaust Fan
38
Figure 14 - Motorized Exhaust
38
Electrical
39
Table 7 - Nameplate Voltage Markings & Tolerances
39
Figure 15 - Power Block
40
Variable Speed Compressors
41
Table 8 - RZ Variable Speed Compressor VFD Frequency Range
41
Gas Heating
42
Table 10 - RZ 145-240 Ton Unit Gas Piping Connections
42
Table 11 - Natural Gas Maximum Piping Capacities (Ft 3 /Hr)
42
Table 9 - RZ 45-140 Ton Unit Gas Piping Connections
42
Gas Pressure Regulator & Overpressure Protection Device
43
Inlet and Manifold Pressures
43
Piping Sizing Example
43
Table 12 - Propane (Kbtu/Hr) Maximum Piping Capacities
43
Additional Gas Piping Considerations
44
Piping Supports
44
Table 13 - Piping Support Intervals
44
Leak Testing
45
Rain Hoods
46
Condensate Drain Piping
46
Figure 16 - Gas Heater Rain Hood
46
Figure 17 - Gas Heater Rain Hood Screws
46
Draw-Through Coils
47
Figure 18 - Draw-Through Drain Trap
47
Table 14 - Draw-Through Drain Trap Dimensions
48
Table 15 - Blow-Through Drain Trap Dimensions
48
Figure 19 - Blow-Through Drain Trap
48
Heating Coils
49
Chilled Water Coil
49
Aluminum Energy Recovery Wheel
50
Figure 21 - Aluminum Energy Recovery Wheel
50
Polymer Energy Recovery Wheel
52
Figure 22 - Polymer Energy Recovery Wheel
52
Startup
55
Supply, Return, and Exhaust Backward Curved Fans
55
Airflow Adjustment
55
Table 19 - Plenum Fan Set Screw Specifications
56
Figure 23 - Air Volume Band
56
Figure 24 - Air Volume Band Tab Locations
56
Figure 25 - Securing Air Volume Band Ends
56
Back Draft Damper Setup
57
Figure 26 - Plenum Fan Gap Tolerances
57
Figure 27 - Closed Back Draft Damper
57
Figure 28 - Open Back Draft Damper
57
Filters
58
Cartridge Filter Installation
58
Energy Recovery Wheel
58
Figure 31 - Top Clip and Side Spring Fastener Securing Filters in Place
58
Adjusting Refrigerant Charge
59
Before Charging
59
Checking Liquid Sub-Cooling
59
Checking Evaporator Superheat
60
Table 20 - Acceptable Fin & Tube Sub-Cooling and Superheat Temperatures
60
Adjusting Sub-Cooling and Superheat Temperatures
61
Table 21 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values
61
Refrigerant Filter Driers
62
Table 22 - Filter Drier Maximum Pressure Drop
62
Figure 29 - Replaceable Core Liquid Filter/Driers
62
Suction Filter
63
Suction Filter Removal Instructions
63
Figure 30 - RPE-48-BD Filter Element
63
Freeze Stat Startup
64
Table 23 - R-410A Refrigerant Temperature-Pressure Chart
64
Indirect Gas Heat Startup
65
VFD Controlled Condenser Fan Startup
66
Low Sound Condenser Fan EC Motor Startup
66
Table 24 - EC Condenser Fan Cycling Options
66
Access Doors
67
Figure 31 - Lockable Door Handles
67
Operation
68
Indirect Gas Heater Operation
68
Electric Heating Operation
68
Steam or Hot Water Preheating and Heating Operation
68
Packaged DX Cooling Operation
68
Chilled Water or Non-Compressorized DX Cooling Operation
68
Energy Recovery Wheel Defrost Timer
69
Figure 32 - Defrost Timer
69
Figure 33 - Temperature Dial
69
Maintenance
70
Gas Heating
70
Gas Heat Exchanger Removal
71
DX Cooling
71
Condensate Drain Pans
71
Figure 34 - Gas Heat Exchanger
71
Supply Fans
72
Lubrication
72
Filter Replacement
72
Energy Recovery Wheel
72
Figure 35 - Wheel Segment Removal Pattern
74
Brazed Plate Heat Exchanger Cleaning
78
Air-Cooled Condenser
79
E-Coated Coil Cleaning
79
Microchannel Coil Cleaning
81
Filter Replacement
82
Replacement Parts
83
Table 26 - RZ Series Filter Sizes
83
Appendix A - Heat Exchanger Corrosion Resistance
84
Appendix B - Thermistor Temperature Vs. Resistance Values
86
RZ Series Startup Form
87
Maintenance Log (E-Coated Coil)
94
Literature Change History
95
G074290 · Rev. a · 200914
96
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AAON RZ Series Installation Operation & Maintenance (112 pages)
Packaged Rooftop Units & Outdoor Air Handling Units
Brand:
AAON
| Category:
Air Handlers
| Size: 5.06 MB
Table of Contents
Table of Contents
3
AAON® RZ Series Features and Options Introduction
7
Safety
8
RZ Series Feature String Nomenclature
14
General Information
26
Codes and Ordinances
27
Receiving Unit
27
Storage
28
Access Doors
28
Wiring Diagrams
28
Installation
28
Locating Units
28
Figure 1 - Lockable Door Handles
28
Curb Installation
29
Table 1 - Air-Cooled Condenser Unit Clearances 45-240 Ton
29
Table 2 - Evaporative Condenser Unit Clearances 45-240 Ton
29
Figure 2 - RZ Series Unit Orientation
29
Lifting the Unit
30
Figure 3 - Base Rail Lifting Lug
30
Figure 4 - 4 Point Lift RZ Series Air-Cooled Condenser Unit
31
Figure 5 - 8 Point Lift RZ Series Air-Cooled Condenser Unit
32
Duct Connection
33
Table 3 - Mounting Dimensions
33
Figure 6 - Curb Mounting
33
Figure 7 - Curb Detail
33
Figure 8 - Curb & Steel Mounting Rail with Dimensions
33
Reassembling Split Units
34
Figure 9 - Unit Base and Sides
34
Figure 10 - Unit Roof Flange Splice Detail
34
Refrigeration Split Installation Procedure
35
Figure 11 - Staggered Assembly for Refrigeration Pipes
35
Electrical Connection of Split Units
36
Outside Air Rain Hood
36
End Flashing Installation
36
Figure 12 - Air Hood Shown in the Open Position
36
Vestibule Exhaust Fan
37
Figure 13 - Factory Supplied End Flashings
37
Figure 14 - Vestibule Exhaust Fan
37
Figure 15 - Motorized Exhaust
37
Electrical
38
Table 4 - Nameplate Voltage Markings & Tolerances
38
Figure 16 - Power Block
39
Variable Speed Compressors
40
Table 5 - RZ Variable Speed Compressor VFD Frequency Range
40
Condensate Drain Piping
41
Draw-Through Coils
41
Figure 17 - Draw-Through Drain Trap
41
Table 6 - Draw-Through Drain Trap Dimensions
42
Table 7 - Blow-Through Drain Trap Dimensions
42
Figure 18 - Blow-Through Drain Trap
42
Startup
43
Filters
43
Cartridge Filter Installation
43
HEPA Filters
43
Metal Mesh Filters
43
Figure 19 - Top Clip and Side Spring Fastener Securing Filters in Place
43
Air Flow Monitoring
44
Supply, Return, and Exhaust Backward Curved Fans
44
Airflow Adjustment
44
Figure 20 - Air Volume Band
44
Table 8 - Plenum Fan Set Screw Specifications
45
Figure 21 - Air Volume Band Tab Locations
45
Figure 22 - Securing Air Volume Band Ends
45
Figure 23 - Plenum Fan Gap Tolerances
45
Back Draft Damper Setup
46
Adjusting Refrigerant Charge
46
Before Charging
46
Figure 24 - Closed Back Draft Damper
46
Figure 25 - Open Back Draft Damper
46
Checking Liquid Sub-Cooling
47
Checking Evaporator Superheat
47
Table 9 - Acceptable Fin & Tube Sub-Cooling and Superheat Temperatures
48
Table 10 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values
48
Adjusting Sub-Cooling and Superheat Temperatures
49
Freeze Stat Startup
50
Refrigerant Filter Driers
50
Table 11 - R-410A Refrigerant Temperature-Pressure Chart
50
Table 12 - Filter Drier Maximum Pressure Drop
50
Suction Filter Removal Instructions
51
Figure 26 - Replaceable Core Liquid Filter/Driers Suction Filter
51
Figure 27 - RPE-48-BD Filter Element
51
VFD Controlled Condenser Fan Startup
52
Table 13 - EC Condenser Fan Cycling Options
52
Table 14 - Hot Water Coil Connection Sizes
59
Table 15 - Steam Distributing Coil Connection Sizes
59
Table 16 - Chilled Water Coil Connection Sizes
60
Figure 28 - Proper Unit Location
63
Figure 29 - Improper Unit Locations
63
Figure 30 - Temporary Drain Components
64
Figure 31 - Water Makeup Valve
66
Figure 32 - Evaporative Condenser Access Door
68
Figure 33 - Aluminum Energy Recovery Wheel
71
Figure 34 - Aluminum ERW Purge Sector Location
72
Figure 35 - Polymer Energy Recovery Wheel
74
Figure 36 - Wheel Segment Removal Pattern
78
Table 17 - Energy Recovery Wheel Cleaning Frequency
81
Figure 37 - Defrost Timer
83
Figure 38 - Temperature Dial
83
Table 18 - RZ 45-140 Ton Electric Heating Capacities
84
Table 19 - RZ 145-240 Ton Electric Heating Capacities
84
Table 20 - RZ 45-140 Ton Gas Heating Capacities
84
Table 21 - RZ 145-240 Ton Gas Heating Capacities
84
Table 22 - RZ 45-140 Ton Unit Gas Piping Connections
85
Table 23 - RZ 145-240 Ton Unit Gas Piping Connections
85
Table 24 - Natural Gas Maximum Piping Capacities (Ft 3 /Hr)
85
Table 25 - Propane (Kbtu/Hr) Maximum Piping Capacities
86
Table 26 - Piping Support Intervals
87
Figure 39 - Gas Heater Rain Hood
89
Figure 40 - Gas Heater Rain Hood Screws
89
Gas Heat Exchanger Removal
91
Phase and Brownout Protection Module
92
Figure 41 - Gas Heat Exchanger
92
UV Lights
95
Filter Replacement
95
Table 27 - Air Disinfection UV Information
95
Table 28 - RZ Series Filter Sizes
96
Replacement Parts
97
Table 29 - Metal Mesh and HEPA Filter Sizes
97
Appendix A - Heat Exchanger Corrosion Resistance
98
Appendix B - Thermistor Temperature Vs. Resistance Values
100
RZ Series Startup Form
101
Maintenance Log (E-Coated Coil)
108
Literature Change History
109
G074290 · Rev. a · 220113
112
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