Sign In
Upload
Manuals
Brands
AAON Manuals
Air Handlers
RZ-90
AAON RZ-90 Manuals
Manuals and User Guides for AAON RZ-90. We have
1
AAON RZ-90 manual available for free PDF download: Installation Operation & Maintenance
AAON RZ-90 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
Advertisement
Advertisement
Related Products
AAON RZ Series
AAON RZ-45
AAON RZ-55
AAON RZ-75
AAON RZ-105
AAON RZ-130
AAON RZ-140
AAON RZ-145
AAON RZ-160
AAON RZ-180
AAON Categories
Controller
Control Unit
Air Handlers
Heat Pump
Air Conditioner
More AAON Manuals
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL