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Next Gen RN
User Manuals: AAON Next Gen RN Rooftop Unit
Manuals and User Guides for AAON Next Gen RN Rooftop Unit. We have
1
AAON Next Gen RN Rooftop Unit manual available for free PDF download: Installation Operation & Maintenance
AAON Next Gen RN Installation Operation & Maintenance (120 pages)
Packaged Rooftop Units, Heat Pumps, & Outdoor Air Handling Units
Brand:
AAON
| Category:
Heating System
| Size: 5.21 MB
Table of Contents
Table of Contents
3
AAON® RN Series Next Gen RN Features and Options Introduction
8
Safety
9
RN Series - Next Gen RN Feature String Nomenclature
15
General Information
27
Codes and Ordinances
27
Receiving Unit
28
Storage
28
Wiring Diagrams
28
Figure 1 - Lockable Handle
28
Installation
29
Locating Units
29
Table 1 - C Cabinet Unit Clearances
29
Figure 2 - RN Series C Cabinet
29
Setting the Curb
30
Table 2 - D Cabinet Unit Clearances
30
Figure 3 - RN Series D Cabinet
30
Figure 4 - RN Series 26, 31-50, 60, and 70 Ton Unit Isolator Locations
31
Figure 5 - Steel Mounting
31
Forklifting the Unit (11, 13 and 16-30 Ton)
32
Lifting the Unit
32
Figure 6 - Forklifting an RN Series C Cabinet, 11, 13 and 16-30 Tons
32
Figure 7 - Lifting Details of a 11-25 and 30 Ton Standard or Power Exhaust Unit
33
Figure 8 - Lifting Details of a 11-25 and 30 Ton Energy Recovery Wheel or Power Return Unit
33
Figure 9 - Lifting Details of a 26, 31-50, 60 and 70 Ton Unit
34
Duct Connection
35
Seismic Curb Installation
36
Figure 10 - Duct Connection
36
Figure 11 - Solid Bottom Seismic Curb with Filters
37
Figure 12 - Seismic Solid Bottom Curb Without Filters Cross Section
38
Figure 13 - Seismic Solid Bottom Curb Without Filters Detail a
38
Figure 14 - Seismic Solid Bottom Curb Without Filters Detail B
38
Figure 15 - Seismic Rigid Mount Curb
38
Outside Air Rain Hood
39
Figure 16 - 11, 13 and 16-30 Ton Closed Rain Hood
39
Figure 17 - 11, 13 and 16-30 Ton Open Rain Hood
39
Figure 18 - 26 and 31-70 Ton Open Rain Hood
39
Metal Mesh Filters
40
Electrical
40
Figure 19 - Rain Hood with Metal Mesh Filter Rack Installation
40
Table 3 - Nameplate Voltage Markings & Tolerances
40
Figure 20 - Unit Utility Entry
41
Figure 21 - Back View of Power Switch from Compressor and Control Compartment
41
Thermostat Control Wiring
43
Variable Speed Compressors
43
Condensate Drain Piping
43
Table 4 - Variable Speed Compressor Turndown Ratio
43
Table 5 - Control Wiring
43
Draw-Through Coils
44
Figure 22 - Draw-Through Drain Trap
44
Startup
45
Filters
45
Air Flow Monitoring
45
Table 6 - Draw-Through Drain Trap Dimensions
45
Supply Fans
46
Table 7 - Plenum Fan Set Screw Specifications
47
Figure 23 - Supply Fan Banding
47
Figure 24 - Plenum Fan Gap Tolerances
47
Power Return Axial Flow Fans (16-25 and 30 Tons)
48
Figure 25 - Fan with the HUB on the Top and RET on the Bottom
48
Figure 26 - Bushing Mount Location
48
Figure 27 - RET with Pin in Groove 4
48
Power Return and Exhaust Axial Flow Fans (26 and 31-70 Tons)
49
Table 8 - Pin Location
49
Table 9 - Pin Groove Location
49
Figure 28 - Fan HUB and RET Castings
49
Figure 29 - Assembled Fan
50
Figure 30 - Back of the Fan
50
Figure 31 - Pin Groove Location
50
Figure 32 - Pitch Pin Location
50
Figure 33 - Example Pitch Pin
50
Adjusting Refrigerant Charge
51
Checking Liquid Sub-Cooling
51
Checking Evaporator Superheat
51
Table 10 - Acceptable Fin & Tube Air-Cooled Condenser Coil Refrigeration Circuit Values
52
Table 11 - Acceptable Water-Cooled Refrigeration Circuit Values
52
Table 12 - Acceptable Microchannel Air-Cooled Condenser Coil Liquid Sub-Cooling Values
52
Adjusting Sub-Cooling and Superheat Temperatures
53
Freeze Stat Startup
53
Table 13 - R-410A Refrigerant Temperature-Pressure Chart
54
Condenser Fan Electronically Commutated Motor (ECM) Startup
55
VFD Controlled Condenser Fan Startup
55
Table 14 - ECM Condenser Fan Cycling Options
55
Adjustable Fan Cycling Switch Procedure
56
Operation
58
Thermostat Operation
58
Packaged DX Cooling Operation and Control
58
Gas Heater Operation
58
Electric Heating Operation
59
Steam or Hot Water Preheating and Heating Operation
59
Modulating Electric Preheat
59
Chilled Water or Non-Compressorized DX Cooling Operation
59
Maintenance
59
Supply Fans
59
Power Exhaust Motor and Belt Removal
60
Figure 34 - 11-25 and 30 Ton Supply Fan
60
Figure 35 - Bolts Which Connect Motor Mount to Blower Fan
60
DX Cooling
61
Condensate Drain Pans
61
Brazed Plate Heat Exchanger Cleaning
61
E-Coated Coil Cleaning
62
Microchannel Coil Cleaning
63
Options
65
Heating Coils
65
Chilled Water Coil
66
Table 15 - Steam Coil Connection Sizes
66
Table 16 - Hot Water Coil Connection Sizes
66
Table 17 - Chilled Water Coil Connection Sizes
66
Packaged Direct Expansion (DX) Units
67
Variable Capacity Compressor Controller
68
Figure 36 - Variable Capacity Compressor Controller
68
Table 18 - Demand Signal Vs. Compressor Capacity Modulation
69
Figure 37 - Compressor Controller Flash Code Details
69
Evaporator Coil (11-25 and 30 Ton)
70
Condenser Fans (11-25 and 30 Ton)
70
Figure 38 - Evaporator Coil Access
70
Refrigerant-To-Water Heat Exchanger
71
Water-Source Heat Pump Applications
71
Open Loop Applications
71
Figure 39 - Removal of a Condenser Fan Assembly
71
Freezing Water in the Heat Exchanger
72
Water Piping
73
Table 19 - Glycol Freezing Points
73
Table 20 - Standard Brazed Plate Heat Exchanger Water Connections
74
Energy Recovery Units
75
Aluminum Energy Recovery Wheel
76
Figure 40 - Aluminum Energy Recovery Wheel
76
Figure 41 - Aluminum ERW Purge Sector Location
77
Polymer Energy Recovery Wheel
78
Figure 42 - Polymer Energy Recovery Wheel
79
Figure 43 - Wheel Segment Removal Pattern
83
Energy Recovery Wheel General Cleaning
85
Table 21 - Energy Recovery Wheel Cleaning Frequency
86
Energy Recovery Wheel Defrost Timer Setting
87
Gas or Electric Heating
88
Figure 44 - Defrost Timer
88
Figure 45 - Temperature Dial
88
Table 22 - Electric and Gas Heating Capacities
89
Electric Preheat
90
Status Display Screens
90
Figure 46 - Preheat Controller
90
System Setting Screens
91
Table 23 - Stages of Electric Preheat
91
LED Flash Alarm Codes
92
Operation
93
Gas Heating
93
Figure 47 - RN Series Gas Heat Exchanger
94
Table 24 -11, 13, 16-25 and 30 Ton Gas Connections
94
Table 25 - 26 and 31-70 Ton Gas Connections
94
Table 26 - Natural Gas (Ft 3 /Hr) Maximum P Iping Capacities
94
Table 27 - Propane (Kbtu/Hr) Maximum P Iping Capacities
94
Gas Pressure Regulator & Overpressure Protection Device
95
Inlet and Manifold Pressures
95
Piping Sizing Examples
95
Piping Supports
95
Additional Gas Piping Considerations
96
Table 28 - Gas Piping Supports
96
Figure 48 - Example 11-50, 60 & 70 Ton through the Base Gas Piping
97
Leak Testing
98
Figure 49 - Gas Heater Instructions
99
Gas Heater Operating Instructions
99
Gas Heat Exchanger Removal
100
Gas Heating Maintenance
100
Figure 50 - Gas Heat Exchanger
101
Phase and Brownout Protection Module
102
Filter Replacement
104
Table 29 - RN Series C Horizontal 11, 13, 16-25 and 30 Ton Pre Filters
104
Table 30 - RN Series C Horizontal 11, 13, 16-25 and 30 Ton Unit Filters
104
Table 31 - RN Series C Horizontal 11, 13, 16-25 and 30 Ton Energy Recovery Wheel Filters
105
Table 32 - RN Series C Horizontal 11, 13, 16-25 and 30 Ton Final Filters
105
Table 33 - RN Series D Cabinet 26, 31, and 40 Ton Pre Filters
105
Table 34 - RN Series D Cabinet 50, 60, and 70 Ton Pre Filters
106
Table 35 - RN Series D Cabinet 26, 31, and 40 Ton Unit Filters
106
Table 36 - RN Series D Cabinet 50, 60, and 70 Ton Unit Filters
106
Replacement Parts
107
Table 37 - RN Series D Cabinet 26, 31-50, 60, and 70 Ton Energy Recovery Wheel Filters
107
Appendix A - Heat Exchanger Corrosion Resistance
108
Appendix B - Thermistor Temperature Vs. Resistance Values
110
RNA Series Startup Form
111
Maintenance Log
115
Maintenance Log (E-Coated Coil)
116
Literature Change History
117
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