AAON RN Series Owner's manual

RN SERIES
(6-140tons)
Packaged Rooftop Units, Heat Pumps,
& OutdoorAir Handling Units
Installation, Operation,
& Maintenance
oDo not store gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
oWHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.

Do not touch any electrical switch; do not
use any phone in your building.
Leave the building immediately.

Immediately call your gas supplier from a
phone remote from the building. Follow the
gas supplier’s instructions.

If you cannot reach your gas supplier, call
the fire department.
oStartup and service must be performed by a
Factory Trained Service Technician.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious
injury, death or property damage.
Be sure to read and understand
the installation, operation, and
service instructions in this manual.
Improper installation, adjustment,
alteration, service, or maintenance
can cause serious injury, death, or
property damage.
A copy of this IOM mustbe kept
with the unit.
WARNING

3
Table ofContents
AAON®RN Series Features and Options Introduction.............................................................. 8
Safety...................................................................................................................................... 9
RN Series Feature String Nomenclature ..................................................................................15
General Information ...............................................................................................................27
Codes and Ordinances.........................................................................................................27
Receiving Unit....................................................................................................................28
Storage...............................................................................................................................28
Wiring Diagrams ................................................................................................................28
Installation .............................................................................................................................29
Locating Units....................................................................................................................29
Setting the Curb..................................................................................................................30
Forklifting the Unit (6-25 and 30 ton)..................................................................................37
Lifting the Unit...................................................................................................................37
Duct Connection.................................................................................................................40
Seismic Curb Installation ....................................................................................................41
Outside Air Rain Hood .......................................................................................................43
End Flashing Installation.....................................................................................................44
Metal Mesh Filters (6-25 and 30 ton Units)..........................................................................44
Electrical............................................................................................................................45
Variable Speed Compressors ...........................................................................................47
Thermostat Control Wiring..............................................................................................48
Condensate Drain Piping.....................................................................................................48
Draw-Through Coils ...........................................................................................................49
Startup ...................................................................................................................................50
Filters.................................................................................................................................50
Supply Fans........................................................................................................................50
Power Return AxialFlow Fans (16-25 and 30 tons) .............................................................52
Power Return and Exhaust Axial Flow Fans (26 and 31-140 tons) ........................................54
Adjusting Refrigerant Charge..............................................................................................55
Checking Liquid Sub-Cooling.........................................................................................56
Checking Evaporator Superheat.......................................................................................56
Adjusting Sub-cooling and Superheat Temperatures.........................................................57
Freeze Stat Startup..............................................................................................................57
Condenser Fan Electronically Commutated Motor (ECM) Startup........................................59
VFD Controlled Condenser Fan Startup...............................................................................59
Adjustable Fan Cycling Switch Procedure ...........................................................................60
Operation...............................................................................................................................62
Thermostat Operation .........................................................................................................62
Packaged DX Cooling Operation and Control......................................................................62
Gas Heater Operation..........................................................................................................62
Electric Heating Operation..................................................................................................63
Steam or Hot Water Preheating and Heating Operation ........................................................63
Modulating Electric Preheat................................................................................................63
Chilled Water or Non-Compressorized DX Cooling Operation.............................................63
Maintenance...........................................................................................................................63

4
Supply Fans........................................................................................................................63
Power Exhaust Motor and Belt Removal .............................................................................64
DX Cooling........................................................................................................................65
Condensate Drain Pans .......................................................................................................65
Brazed Plate Heat Exchanger Cleaning................................................................................65
E-Coated Coil Cleaning ......................................................................................................66
Microchannel Coil Cleaning................................................................................................67
Options ..................................................................................................................................69
Heating Coils......................................................................................................................69
Chilled Water Coil..............................................................................................................70
Packaged Direct Expansion (DX) Units...............................................................................71
Variable Capacity Compressor Controller............................................................................72
Evaporator Coil (6-25 and 30 ton) .......................................................................................74
Condenser Fans (6-25 and 30 ton) .......................................................................................74
Suction Filter (55, 65 and 75-140 ton) .................................................................................75
Suction Filter Removal Instructions.................................................................................76
Refrigerant-to-Water Heat Exchanger..................................................................................76
Water-Source Heat Pump Applications ............................................................................76
Open Loop Applications..................................................................................................76
Freezing Water in the Heat Exchanger .............................................................................77
Water Piping...................................................................................................................78
Energy Recovery Units .......................................................................................................80
Aluminum Energy Recovery Wheel.................................................................................81
Polymer Energy Recovery Wheel....................................................................................83
Energy Recovery Wheel General Cleaning ......................................................................90
Energy Recovery Wheel Defrost Timer Setting...............................................................92
Gas or Electric Heating .......................................................................................................92
Electric Preheat...................................................................................................................94
Status Display Screens ....................................................................................................94
System Setting Screens ...................................................................................................95
LED Flash Alarm Codes .................................................................................................96
Operation........................................................................................................................97
Gas Heating........................................................................................................................97
Piping Sizing Examples...................................................................................................99
Inlet and Manifold Pressures ...........................................................................................99
Gas Pressure Regulator & Overpressure Protection Device.............................................100
Piping Supports.............................................................................................................100
Additional Gas Piping Considerations............................................................................100
Leak Testing.................................................................................................................104
Gas Heater Operating Instructions .................................................................................105
Gas Heating Maintenance..............................................................................................106
Gas Heat Exchanger Removal .......................................................................................106
Phase and Brownout Protection Module ............................................................................108
Filter Replacement............................................................................................................110
Replacement Parts ............................................................................................................120
Appendix A - Heat Exchanger Corrosion Resistance..............................................................121

5
Appendix B - Thermistor Temperature vs. Resistance Values ................................................123
RN Series Startup Form........................................................................................................124
Maintenance Log..................................................................................................................128
Maintenance Log (E-Coated Coil).........................................................................................129
Literature Change History.....................................................................................................130
Index of Tables and Figures
Tables:
Table 1 - A Cabinet Unit Clearances .......................................................................................29
Table 2 - B Cabinet Unit Clearances........................................................................................29
Table 3 - C Cabinet Unit Clearances........................................................................................30
Table 4 - D Cabinet Unit Clearances .......................................................................................30
Table 5 - E Cabinet Unit Clearances........................................................................................30
Table 6 - Nameplate Voltage Markings & Tolerances ..............................................................45
Table 7 - RN-A through C Cabinet Variable Speed Compressor Turndown Ratio .....................47
Table 8 - RN-E Cabinet Single Circuited Variable Speed Compressor VFD Frequency Range ..48
Table 9 - RN-E Cabinet Tandem Circuited Variable Speed Compressor VFD Frequency Range
..............................................................................................................................................48
Table 10 - Control Wiring.......................................................................................................48
Table 11 - Draw-Through Drain Trap Dimensions...................................................................50
Table 12 - Plenum Fan Set Screw Specifications......................................................................52
Table 13 - Pin Location...........................................................................................................54
Table 14 - Pin Groove Location ..............................................................................................54
Table 15 - Acceptable Fin & Tube Air-Cooled Condenser Coil Refrigeration Circuit Values ....56
Table 16 - Acceptable Water-Cooled Refrigeration Circuit Values ...........................................56
Table 17 - Acceptable Microchannel Air-Cooled Condenser CoilLiquid Sub-Cooling Values ..57
Table 18 - R-410A and R-22 Refrigerant Temperature-Pressure Chart......................................58
Table 19 - ECM Condenser Fan Cycling Options ....................................................................59
Table 20 - Steam Coil Connection Sizes ..................................................................................70
Table 21 - Hot Water Coil Connection Sizes............................................................................70
Table 22 - Chilled Water Coil Connection Sizes ......................................................................70
Table 23 - Demand Signal vs. Compressor Capacity Modulation..............................................73
Table 24 - Glycol Freezing Points ...........................................................................................78
Table 25 - Standard Brazed Plate Heat Exchanger Water Connections......................................78
Table 26 - Energy Recovery Wheel Cleaning Frequency..........................................................90
Table 27 - Electric and Gas Heating Capacities........................................................................93
Table 28 - Stages of Electric Preheat.......................................................................................95
Table 29 - 6-8 and 10 ton Gas Connections..............................................................................98
Table 30 - 9, 11, 13, & 15 ton Gas Connections.......................................................................98
Table 31 - 14, 16-25 and 30 ton...............................................................................................98
Table 32 - 26 and 31-70 ton ....................................................................................................98
Table 33 - 55, 65 and 75-140 ton Gas Connections ..................................................................98
Table 34 - Natural Gas (ft3/hr) Maximum Piping Capacities.....................................................99
Table 35 - Propane (kBtu/hr) Maximum Piping Capacities.......................................................99
Table 36 - Gas Piping Supports.............................................................................................100
Table 37 - 6-8 and 10 ton Pre Filters......................................................................................110

6
Table 38 - 9 and 11-15 ton Pre Filters....................................................................................111
Table 39 - 14, 16-25 and 30 ton Pre Filters ............................................................................111
Table 40 - 26, 31, and 40 ton Pre Filters ................................................................................111
Table 41 - 50, 60, and 70 ton Pre Filters ................................................................................111
Table 42 - 55, 65, and 75 ton Pre Filters ................................................................................112
Table 43 - 90-140 ton Pre Filters...........................................................................................112
Table 44 - 26, 31-50, 60, and 70 ton Preheat Filters ...............................................................112
Table 45 - 6-8 and 10 ton Unit Filters....................................................................................113
Table 46 - 9 and 11 ton Unit Filters.......................................................................................113
Table 47 - 13 and 15 ton Unit Filters .....................................................................................114
Table 48 - 14, 16-25 and 30 ton Unit Filters...........................................................................114
Table 49 - 26, 31, and 40 ton Unit Filters...............................................................................115
Table 50 - RN Series 50, 60, and 70 ton Unit Filters ..............................................................115
Table 51 - 55, 65, and 75 ton Unit Filters...............................................................................116
Table 52 - 90-140 ton Unit Filters .........................................................................................116
Table 53 - 6-8 and 10 ton Energy Recovery Wheel Filters......................................................116
Table 54 - 9 and 11-15 ton Energy Recovery Wheel Filters....................................................117
Table 55 - 14, 16-25 and 30 ton Energy Recovery Wheel Filters ............................................117
Table 56 - 26, 31-50, 60, and 70 ton Energy Recovery Wheel Filters......................................118
Table 57 - 55, 65, and 75-140 ton Energy Recovery WheelFilters..........................................119
Figures:
Figure 1 - Lockable Handle.....................................................................................................28
Figure 2 - RN Series A, B and C Cabinet,................................................................................30
Figure 3 - RN Series D Cabinet,..............................................................................................30
Figure 4 - RN Series E Cabinet, ..............................................................................................30
Figure 5 - RN Series 6-8 and 10 ton Unit Isolator Locations.....................................................32
Figure 6 - RN Series 9 and 11-15 ton Unit Isolator Locations...................................................33
Figure 7 - RN Series 16-25 and 30 ton Unit Isolator Locations.................................................34
Figure 8 - RN Series 26, 31-50, 60, and 70 ton Unit Isolator Locations.....................................35
Figure 9 - Steel Mounting ......................................................................................................36
Figure 10 - Forklifting an RN Series A, B and C Cabinet, 6-25 and 30 tons ..............................37
Figure 11 - Lifting Details of a 6-25 and 30 ton Standard or Power Exhaust Unit......................38
Figure 12 - Lifting Details of a 6-25 and 30 ton Energy Recovery Wheel or Power Return Unit 38
Figure 13 - Lifting Details of a 26, 31-50, 60 and 70 ton Unit...................................................39
Figure 14 - Lifting Details of a 55, 65 and 75-140 ton Unit ......................................................39
Figure 15 - Duct Connection...................................................................................................40
Figure 16 - Solid Bottom Seismic Curb with Filters.................................................................41
Figure 17 - Seismic Solid Bottom Curb without Filters Cross Section.......................................42
Figure 18 - Seismic Solid Bottom Curb without Filters Detail A...............................................42
Figure 19 - Seismic Solid Bottom Curb without Filters Detail B...............................................42
Figure 20 - Seismic Rigid Mount Curb....................................................................................42
Figure 21 - 6-25 and 30 ton.....................................................................................................43
Figure 22 - 6-25 and 30 ton.....................................................................................................43
Figure 23 - 26 and 31-140 ton.................................................................................................43
Figure 24 - Factory Supplied End Flashings.............................................................................44

7
Figure 25 - Rain Hood with Metal Mesh Filter Rack Installation ..............................................44
Figure 26 - Unit Utility Entry..................................................................................................46
Figure 27 - Back View of Power Switch from Compressor and Control Compartment (6-50, 60,
and 70 ton Units)....................................................................................................................46
Figure 28 - Back View of Utility Entry and Power Switch from Control Compartment (55, 65
and 75-140 ton Units) .............................................................................................................46
Figure 29 - Draw-Through Drain Trap.....................................................................................49
Figure 30 - Supply Fan Banding..............................................................................................52
Figure 31 - Plenum Fan Gap Tolerances..................................................................................52
Figure 32 - Fan with the HUB on the Top and RET on the Bottom...........................................53
Figure 33 - Bushing Mount Location.......................................................................................53
Figure 34 - RET with Pin in Groove 4 .....................................................................................53
Figure 35 - Fan HUB and RET Castings..................................................................................53
Figure 36 - Assembled Fan .....................................................................................................54
Figure 37 - Back of the Fan.....................................................................................................54
Figure 38 - Pin Groove Location.............................................................................................55
Figure 39 - Pitch Pin Location.................................................................................................55
Figure 40 - Example Pitch Pin.................................................................................................55
Figure 41 - 9-25 and 30 ton Supply Fan...................................................................................64
Figure 42 - Bolts which Connect Motor Mount to Blower Fan .................................................64
Figure 43 - Variable Capacity Compressor Controller ..............................................................72
Figure 44 - Compressor Controller Flash Code Details.............................................................73
Figure 45 - Evaporator Coil Access.........................................................................................74
Figure 46 - Removalof a Condenser Fan Assembly.................................................................75
Figure 47 - RPE-48-BD filter element .....................................................................................75
Figure 48 - Aluminum Energy Recovery Wheel ......................................................................81
Figure 49 - Aluminum ERW Purge Sector Location.................................................................81
Figure 50 - Polymer Energy Recovery Wheel..........................................................................83
Figure 51 - Wheel Segment Removal Pattern...........................................................................88
Figure 52 - Defrost Timer .......................................................................................................92
Figure 53 - Temperature Dial..................................................................................................92
Figure 54 - Preheat Controller.................................................................................................94
Figure 55 - RN Series Gas Heat Exchanger .............................................................................98
Figure 56 - Example 6-50, 60 & 70 ton through the Base Gas Piping......................................102
Figure 57 - Example 55, 65 and 75-140 ton for across the Roof Gas Piping............................103
Figure 58 - Gas Heater Instructions .......................................................................................105
Figure 59 - Gas Heat Exchanger............................................................................................107
Figure 60 - RN Series 6-50, 60, and 70 ton Standard Filter Layouts........................................119
Figure 61 - RN Series 55, 65, 70-140 ton Standard Filter Layouts ..........................................120
R90721 · Rev. H · 220113

8
AAON®RN Series Features and Options Introduction
EnergyEfficiency
Direct Drive Backward Curved Plenum
Supply Fans
Two-Step, Variable Capacity and
Variable Speed R-410A Scroll
Compressors
Airside Economizers
Factory Installed AAONAIRE®Energy
Recovery Wheels
Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
Modulating Natural Gas Heaters
Modulating/SCR Electric Heaters
Premium Efficiency Motors
Variable Speed Supply/Return/Exhaust
Fans
Water-Cooled Condensers
Air-Source, Water-Source and
Geothermal Heat Pumps
Indoor Air Quality
100% Outside Air
Constant Volume Outside Air Control
Economizer CO2Override
High Efficiency Filtration
Double Wall Rigid Polyurethane Foam
Panel Construction, R-13 Insulation
Interior Corrosion Protection
Humidity Control
High Capacity Cooling Coils
Variable Capacity Compressors
Factory Installed AAONAIRE Total
Energy Recovery Wheels
Mixed/Return Air Bypass
Modulating Hot Gas Reheat
Safety
Burglar Bars
Freeze Stats
Hot Water/Steam Preheat Coils
Electric Preheat
Phase and Brown Out Protection
Supply/Return Smoke Detectors
Safety Continued
Supply/Return Firestats
Installation and Maintenance
Clogged Filter Switch
Color Coded Wiring Diagram
Compressors in Isolated Compartment
Compressor Isolation Valves
Convenience Outlet
Direct Drive Supply Fans
Hinged Access Doors with Lockable
Handles
Magnehelic Gauge
Service Lights
Sight Glass
SystemIntegration
Chilled Water Cooling Coils
Controls by Others
Electric/Natural Gas/LP Heating
Hot Water/Steam Heating Coil
Non-Compressorized DX Coils
Water-Cooled Condensers
Environmentally Friendly
Airside Economizers
Factory Installed AAONAIRE Energy
Recovery Wheels
Mixed/Return Air Bypass
R-410A Refrigerant
Extended Life
5 Year Compressor Warranty
15 Year Aluminized Steel Heat
Exchanger Warranty
25 Year Stainless Steel Heat Exchanger
Warranty
Condenser Coil Guards
Interior Corrosion Protection
Coil Polymer E-Coating - 5 Year Coating
Warranty
Stainless Steel Coil Casing
Stainless Steel Drain Pans

9
Safety
Attention must be paid to the following statements:
NOTE - Notes are intended to clarify the unit installation, operation, and maintenance.
CAUTION- Caution statements aregiven to prevent actions thatmay result in equipment
damage, property damage, or personal injury.
WARNING - Warning statements are given to prevent actions that could result in
equipment damage, property damage, personal injury or death.
DANGER - Danger statements are given to prevent actions that will result in equipment
damage, property damage, severe personal injury or death.
ELECTRIC SHOCK, FIRE OR
EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in dangerous
operation, serious injury, death or
property damage.
Improper servicing could result in
dangerous operation, serious injury,
death, or property damage.

Before servicing, disconnect all
electrical power to the furnace.
More than one disconnect may be
provided.

When servicing controls, label all
wires prior to disconnecting.
Reconnect wires correctly.

Verify proper operation after
servicing. Secure all doors with
key-lock or nut and bolt.
WARNING
WHAT TO DO IF YOU SMELL GAS
Do not try to turn on unit.
Shut off main gas supply.
Do not touch any electric switch.

Do not use any phone in the
building.

Never test for gas leaks with an
open flame.

Use a gas detection soap solution
and check all gas connections and
shut off valves.
CAUTION
Electric shock hazard. Before
servicing, shut off all electrical power
to the unit, including remote
disconnects, to avoid shock hazard or
injury from rotating parts. Follow
proper Lockout-Tagout procedures.
WARNING

10
FIRE, EXPLOSION OR CARBON
MONOXIDE POISONING HAZARD
Failure to replace proper controls
could result in fire, explosion, or
carbon monoxide poisoning. Failure to
follow safety warnings exactly could
result in serious injury, death or
property damage. Do not store or use
gasoline or other flammable vapors
and liquids in the vicinity of this
appliance.
WARNING
CARBON MONOXIDE POISONING
HAZARD
Failure to follow instructions could
result in severe personal injury or
death due to carbon-monoxide
poisoning, if combustion products
infiltrate into the building.
Check that all openings in the outside
wall around the vent (and air intake)
pipe(s) are sealed to prevent
infiltration of combustion products into
the building.
Check that furnance vent (and air
intake) terminal(s) are not obstructed
in any way during all seasons.
WARNING
During installation, testing, servicing,
and troubleshooting of the equipment
it may be necessary to work with live
electrical components. Only a
qualified licensed electrician or
individual properly trained in handling
live electrical components shall
perform these tasks.
Standard NFPA-70E, an OSHA
regulation requiring an Arc Flash
Boundary to be field established and
marked for identification of where
appropriate Personal Protective
Equipment (PPE) be worn, must be
followed.
WARNING
Unit power supply wire must be only
copper or aluminum.
CAUTION
ROTATING COMPONENTS
Unit contains fans with moving parts
that can cause serious injury. Do not
open door containing fans until the
power to the unit has been
disconnected and fan wheel has
stopped rotating.
WARNING

11
GROUNDING REQUIRED
All field installed wiring must be
completed by qualified personnel.
Field installed wiring mustcomply with
NEC/CEC, local and state electrical
code requirements. Failure to follow
code requirements could result in
serious injury or death. Provide proper
unit ground in accordance with these
code requirements.
WARNING
VARIABLE FREQUENCY DRIVES
Do not leave VFDs unattended in
hand mode or manual bypass.
Damage to personnel or equipment
can occur if left unattended. When in
hand mode or manual bypass mode
VFDs will not respond to controls or
alarms.
WARNING
Electric motor over-current protection
and overload protection may be a
function of the Variable Frequency
Drive to which the motors are wired.
Never defeat the VFD motor overload
feature. The overload ampere setting
must not exceed 115% of the electric
motor’s FLA rating as shown on the
motor nameplate.
CAUTION
UNIT HANDLING
To prevent injury or death lifting
equipment capacity shall exceed unit
weight by an adequate safety factor.
Always test-lift unit not more than 24
inches high to verify proper center of
gravity lift point to avoid unit damage,
injury or death.
WARNING
Failure to properly drain and vent coils
when not in use during freezing
temperature may result in coil and
equipment damage.
CAUTION
Rotation must be checked on all
MOTORS AND COMPRESSORS of 3
phase units at startup by a qualified
service technician. Scroll
compressors are directional and can
be damaged if rotated in the wrong
direction. Compressor rotation must
be checked using suction and
discharge gauges. Fan motor rotation
mustbe checked for proper operation.
Alterations must only be made at the
unit power connection
CAUTION
Do not use oxygen, acetylene or air in
place of refrigerant and dry nitrogen
for leak testing. A violent explosion
may result causing injury or death.
WARNING

12
WATER PRESSURE
Prior to connection of condensing
water supply, verify water pressure is
less than maximum pressure shown
on unit nameplate. To prevent injury
or death due to instantaneous release
of high pressure water, relief valves
must be field supplied on system
water piping.
WARNING
Always use a pressure regulator,
valves and gauges to control incoming
pressures when pressure testing a
system. Excessive pressure may
cause line ruptures, equipment
damage or an explosion which may
result in injury or death.
WARNING
To prevent damage to the unit, do not
use acidic chemical coil cleaners. Do
not use alkaline chemicalcoil cleaners
with a pH value greater than 8.5, after
mixing, without first using an
aluminum corrosion inhibitor in the
cleaning solution.
CAUTION
Some chemical coil cleaning
compounds are caustic or toxic. Use
these substances only in accordance
with the manufacturer’s usage
instructions. Failure to follow
instructions may result in equipment
damage, injury or death.
WARNING
Do not clean DX refrigerant coils with
hot water or steam. The use of hot
water or steam on refrigerant coils will
cause high pressure inside the coil
tubing and damage to the coil.
CAUTION
Door compartments containing
hazardous voltage or rotating parts
are equipped with door latches to
allow locks. Door latch are shipped
with nut and bolts requiring tooled
access. If you do not replace the
shipping hardware with a pad lock
always re-install the nut & bolt after
closing the door.
CAUTION

13
1. Startup andservice must be performed by
a Factory Trained Service Technician.
2. Use only with type of the gas approved
for the furnace. Referto the furnace rating
plate.
3. The unit is for outdoor use only. See
General Information section for more
information.
4. Provide adequate combustion ventilation
air to the furnace. If a vent duct extension
is used, a class III approved vent is
required. See the Locating Units and Gas
Heating sections of the Installation
section of the manual.
5. Always install and operate furnace within
the intended temperature rise range and
duct systemexternal static pressure (ESP)
as specified on the unit nameplate.
Cleaning the cooling tower or
condenser water loop with harsh
chemicals such as hydrochloric acid
(muriatic acid), chlorine or other
chlorides, candamage the refrigerant-
to-water heat exchanger. Care must
be taken to avoid allowing chemicals
to enter the refrigerant-to-water heat
exchanger. See Appendix A - Heat
Exchanger Corrosion Resistance for
more information.
CAUTION
OPEN LOOP APPLICATIONS
Failure of the condenser as a result of
chemical corrosion is excluded from
coverage under AAON Inc. warranties
and the heat exchanger
manufacturer’s warranties.
WARNING
WATER FREEZING
Failure of the condenser due to
freezing will allow water to enter the
refrigerant circuit and will cause
extensive damage to the refrigerant
circuit components. Any damage to
the equipment as a result of water
freezing in the condenser is excluded
from coverage under AAON
warranties and the heat exchanger
manufacturer warranties.
WARNING
COMPRESSOR CYCLING
3 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 3 minutes.
5 MINUTE MINIMUM ON TIME
To maintain the proper oil level
compressors must cycle on for a
minimum of 5 minutes.
The cycle rate must not exceed 7
starts per hour.
WARNING
WARNING

14
6. The supply and return air ducts must be
derived from the same space. It is
recommended ducts be provided with
access panels to allow inspection for duct
tightness. When a down flow duct is used
with electric heat, the exhaust duct must
be an L shaped duct.
7. Clean furnace, duct and components
upon completion of the construction
setup. Verify furnace operating
conditions including input rate,
temperature rise and ESP.
8. Every unit has a unique equipment
nameplate with electrical, operational,
and unit clearance specifications. Always
refer to the unit nameplate for specific
ratings unique to the model you have
purchased.
9. READ THE ENTIRE INSTALLATION,
OPERATION AND MAINTENANCE
MANUAL. OTHER IMPORTANT
SAFETY PRECAUTIONS ARE
PROVIDED THROUGHOUT THIS
MANUAL.
10. Keep this manual and all literature
safeguarded near or on the unit.

15
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
02–3 8 4 :
A
000–
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
BASE MODEL
SERIES AND GENERATION
RN
UNIT SIZE
006 = 6 ton Capacity
007 = 7 ton Capacity
008 = 8 ton Capacity
009 = 9 ton Capacity
010 = 10 ton Capacity
011 = 11 ton Capacity
013 = 13 ton Capacity
014 = 14 ton Capacity
015 = 15 ton Capacity
016 = 16 ton Capacity
018 = 18 ton Capacity
020 = 20 ton Capacity
025 = 25 ton Capacity
026 = 26 ton Capacity
030 = 30 ton Capacity
031 = 31 ton Capacity
040 = 40 ton Capacity
050 = 50 ton Capacity
055 = 55 ton Capacity
060 = 60 ton Capacity
065 = 65 ton Capacity
070 = 70 ton Capacity
075 = 75 ton Capacity
090 = 90 ton Capacity
105 = 105 ton Capacity
120 = 120 ton Capacity
130 = 130 ton Capacity
140 = 140 ton Capacity
VOLTAGE
1 = 230V/1Φ/60Hz
2 = 230V/3Φ/60Hz
3 = 460V/3Φ/60Hz
4 = 575V/3Φ/60Hz
6 = 380V/3Φ/50Hz
8 = 208V/3Φ/60Hz
9 = 208V/1Φ/60Hz
INTERIOR PROTECTION
0 = Standard-Vertical Discharge and Return
A = InteriorCorrosion Protection -Vertical
Discharge andReturn
Model Option A: COOLING/HEAT
PUMP
A1: REFRIGERANT STYLE
0 = AirHandling Unit
B = R-410A - High Efficiency
C = R-410A - Standard Efficiency
E = R-410A Variable Capacity ScrollCompressor-
High Efficiency
F = R-410A Variable Capacity ScrollCompressor -
Standard Efficiency
G = R-410A Two-Stage Compressor-High
Efficiency
H = R-410A Variable Capacity ScrollCompressor+
Two-Stage Compressor-High Efficiency
K = R-410A Variable Speed ScrollCompressor-
High Efficiency
L= R-410A VFD CompatibleTandemCompressors
+ MicrochannelCondenser
A2: UNIT CONFIGURATION
0 = No Cooling
A = Air-Cooled Cond.+Std Evap.Coil
B = Air-Cooled Cond.+6 RowEvap.Coil
J = Water-CooledCond.+Std Evap.Coil
K = Water-CooledCond.+6Row Evap.Coil
P = Air-Cooled Cond.+6Row Evap.Coil + Mixed
Air Bypass
Q = Air-Cooled Cond.+6 Row Evap.Coil + Return
Air Bypass
R = Water-Cooled Cond.+6Row Evap.Coil +
Return AirBypass
T = Water-Cooled Cond.+6 RowEvap.Coil +
Mixed Air Bypass
U = Chilled WaterCoil - 4 Row
W = Chilled WaterCoil- 6 Row
2 = Non-Compressorized +Std Evap.Coil
4 = Non-Compressorized +6 Row Evap.Coil
6 = Air-Source Heat Pump
7 = Water-Source/GeothermalHeat Pump

16
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
02–38 4 :
A
000–
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
Model Option A: COOLING/HEAT
PUMP
A3: COIL COATING
0 = Standard
1 = PolymerE-Coated Evap.and Cond.
8 = PolymerE-Coated Cond.
9 = PolymerE-Coated Cooling Coil
A = Stainless SteelEvap.Coil Casing +PolymerE-
Coated Cond.Coil
D = Stainless SteelCooling CoilCasing
J = Stainless SteelEvap.CoilCasing +Polymer E-
Coated Evap.Coil
K = Stainless SteelCasing (Evap Only)+PolymerE-
Coated Coils (Evap &Cond)
A4: COOLING/HEAT PUMP STAGING
0 = No Cooling
1 = 1 Stage
2 = 2 Stage
4 = 4 Stage
5 = 5 Stage
9 = Modulating-Lead VCC
A = Modulating -AllVCC
B = 1 Stage Heat Pump +1 Stage Auxiliary Heat
C = 2 Stage Heat Pump +1 Stage Auxiliary Heat
D = 4 StageHeat Pump +1 Stage Auxiliary Heat
E = ModulatingHeat Pump -Lead VCC + 1 Stage
Aux. Heat
F = Modulating HeatPump -All VCC + 1 Stage
Aux. Heat
H = Single Serpentine8fpi
J = Half Serpentine 8fpi
K = Single Serpentine10fpi
L = Half Serpentine10fpi
M = Single Serpentine 12fpi
N = Half Serpentine12fpi
P = 1 Stage Heat Pump +2 Stage Auxiliary Heat
Q = 2 StageHeat Pump +2 Stage Auxiliary Heat
R = 4 Stage Heat Pump +2 Stage Auxiliary Heat
S = Modulating HeatPump -Lead VCC + 2 Stage
Aux. Heat
T = ModulatingHeat Pump -All VCC + 2 Stage
Aux. Heat
U = 1 StageHeat Pump +4 Stage Auxiliary Heat
A4: COOLING/HEAT PUMP STAGING –Cont.
V = 2 StageHeat Pump +4 Stage Auxiliary Heat
W = 4 Stage Heat Pump + 4 StageAuxiliary Heat
Y = Modulating Heat Pump -Lead VCC + 4 Stage
Aux. Heat
Z = ModulatingHeat Pump -All VCC + 4 Stage
Aux. Heat
Model Option B: HEATING
B1:HEATING TYPE
0 = No Heating
1 = Electric Heat
2 = NaturalGas Aluminized
3 = NaturalGas StainlessSteel
4 = High Altitude NaturalGas Aluminized
5 = High Altitude NaturalGas Stainless Steel
6 = LP Gas Aluminized
7 = LP Gas StainlessSteel
8 = High Altitude LPGas Aluminized
9 = High Altitude LPGas Stainless Steel
C = SteamDistributing Standard
D = SteamDistributingPolymerE-Coated
E = Hot WaterStandard
F = Hot WaterPolymerE-Coated

17
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
02–38 4 :
A
000–
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
B2:HEATING DESIGNATION
0 = No Heating
1 = Heat 1
2 = Heat 2
3 = Heat 3
4 = Heat 4
6 = Heat 6
7 = Heat 7
8 = Heat 8
9 = Heat 9
A = Heat A
B = Heat B
C = Heat C
D = Heat D
E = Heat E
F = Heat F
G = Heat G
H = 1 RowCoil
J = 2 RowCoil
K = Heat K
L = Heat L
M = Heat M
N = Heat N
P = Heat P
B3:HEATING STAGING
0 = No Heating
1 = 1 Stage
2 = 2 Stage
3 = 3 Stage
4 = 4 Stage
5 = 5 Stage
6 = 6 Stage
7 = 7 Stage
8 = 8 Stage
9 = ModulatingGas/SCRElectric
A = Modulating/SCRElectric,0-10V ControlSignal
B = High TurndownModulatingGas
H = Single Serpentine8fpi
J = Half Serpentine8fpi
K = Single Serpentine10fpi
L = Half Serpentine10fpi
M = Single Serpentine 12fpi
N = Half Serpentine12fpi
Feature 1: RETURN/OUTSIDE AIR
1A: RETURN/OUTSIDE AIR SECTION
0 = Manually AdjustableOA Opening+RA Opening
A = Economizer
B = Econ + PowerExhaust
C = Econ + PowerReturn
D = Econ + PE - DischargeDamperVolumeControl
E = Econ + PE - DischargeDamperVolume Control
+ 0-10V External Control
F = Low cfm TotalEnergy Recovery Wheel
G = Low cfm TotalERW + Bypass
H = Low cfm Sensible ERW
J = Low cfm Sensible ERW +Bypass
K = 100% Outside Air-No Return Air
L = Motorized OutsideAirDamper+RA Opening
M = Motorized OutsideAirDamper -No Return Air
N = Empty ERW Option Box- No PowerExhaust
P = Empty ERW Option Box+ PowerExhaust
Q = 1% PurgeLowcfm TotalERW
R = 1%PurgeLow cfmTotalERW + Bypass
S = 1% PurgeLowcfm SensibleERW
T = 1% Purge Lowcfm SensibleERW +Bypass
U = High cfm TotalERW
V = High cfm TotalERW + Bypass
W = High cfm Sensible ERW
Y = High cfm SensibleERW + Bypass
Z = 1% Purge High cfmTotalERW
1 = 1%Purge High cfmTotalERW + Bypass
2 = 1%Purge High cfmSensibleERW
3 = 1%Purge High cfmSensibleERW + Bypass
4 = SingleTotalEnergy RecoveryWheel+Bypass
5 = 100% Return Air

18
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
0 2 –3 8 4 :
A
0 0 0 –
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
Feature 1: RETURN/OUTSIDE AIR
1B:RETURN/EXHAUST AIR BLOWER
CONFIGURATION
A = 1 Blower + StandardEfficiency Motor
B = 2 Blowers + Standard Efficiency Motor
C = 1 Blower + Premium Efficiency Motor
D = 2 Blowers + Premium Efficiency Motors
E = 1 Blower + Premium Efficiency Motor+1VFD
F = 2 Blowers + Premium Efficiency Motors+2
Motorson 1VFD
G = 2 Blowers + Premium Efficiency Motors+2
Motorson 2VFDs
H = 1 Blower + Premium Efficiency TEFC Motor
J = 2 Blowers + PremiumEfficiency TEFC Motors
K = 1 Blower + Premium Efficiency TEFC Motor+
1 VFD
L = 2 Blowers + Premium Efficiency TEFC Motors+
2 Motors on1VFD
M = 2 Blowers + Premium Efficiency TEFC Motors
+ 2 Motorson2VFDs
N = Option E+ Shaft Grounding
P = Option F+ ShaftGrounding
Q = Option G+ Shaft Grounding
R = Option K+ Shaft Grounding
S = Option L+ Shaft Grounding
T = Option M +Shaft Grounding
1C: RETURN/EXHAUST AIR BLOWER
0 = Standard-None
A = 12”x9” x 2 Forward Curved
B = 15” Backward Curved Plenum
C = 18.5” Backward Curved Plenum
D = 22” Backward Curved Plenum
F = 27” Backward Curved Plenum
G = 22” Direct Drive Axial Flow
H = 35.5” Direct Drive Axial Flow
J = 15” BC Plenum - 50% Width with Banding
K = 18.5” BC Plenum - 70% Width with Banding
L = 22” BC Plenum - 70% Width with Banding
M = 27” BC Plenum - 70% Width with Banding
N = 30” Backward Curved Plenum
P = 42” 9 Blade Direct Drive Axial Flow
Q = 42” 12 Blade Direct Drive Axial Flow
R = 24” Backward Curved Plenum
S = 33” Backward Curved Plenum
T = 12”x9” x 1 Forward Curved
1D: RETURN/EXHAUST AIR BLOWER
MOTOR
0 = Standard-None
C = 1 hp - 1760 rpm
D = 2 hp - 1760 rpm
E = 3 hp - 1760 rpm
F = 5 hp - 1760 rpm
G = 7.5 hp - 1760 rpm
H = 10 hp - 1760 rpm
L = 15 hp -1760 rpm
M = 20 hp - 1760 rpm
N = 1 hp - 1170 rpm
P = 2 hp - 1170 rpm
Q = 3 hp - 1170 rpm
R = 5 hp - 1170 rpm
S = 7.5 hp - 1170 rpm
T = 10 hp -1170 rpm
U = 15 hp - 1170 rpm
V = 20 hp - 1170 rpm
W = 25 hp - 1170 rpm
Y = 30 hp - 1170 rpm
3 = 25 hp - 1760 rpm
4 = 30 hp - 1760 rpm
5 = 40 hp - 1760 rpm
6 = 50 hp - 1760 rpm

19
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
0 2 –3 8 4 :
A
000–
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
Feature 2: OUTSIDE AIR CONTROL
0 = Standard-None
A = 3 Position Actuator-SensibleLimit
B = 3 Position Actuator -Enthalpy Limit
C = Fully Modulating Actuator-SensibleLimit
D = Fully ModulatingActuator-Enthalpy Limit
E = DDCActuator
F = Constant Volume OutsideAir
G = Options A +F
H = Options B+ F
J = Options C+ F
K = Options D+F
L = Options E+ F
M = 3 Pos.Act.-SensibleLimit + CO2 Override
N = 3 Pos.Act.-Enthalpy Limit + CO2 Override
P = Fully Mod.Act.-Sensible+CO2 Override
Q = Fully Mod.Act.-Enthalpy +CO2Override
R = DDC Actuator+CO2 Override
S = Dual MinimumPosition Potentiometers+Fully
Mod.Act.-SensibleLimit
T = DualMinimumPosition Potentiometers+Fully
Mod.Act.-Enthalpy Limit
U = 2 Position Actuator
Y = Fault Detection andDiagnosticsController
(FDD) SensibleLimit
Z = FDD Enthalpy Limit
1 = FDD Sensible Limit + CO2 Override
2 = FDD Enthalpy Limit + CO2 Override
Feature 3: HEAT OPTIONS
0 = Standard-None
E = DischargeAirOverride
K = Auxiliary Heat K
L = Auxiliary Heat L
M = Auxiliary Heat M
N = Auxiliary Heat N
P = Auxiliary Heat P
Q = Auxiliary Heat Q
R = Auxiliary Heat R
S = Auxiliary Heat S
T = Auxiliary Heat T
U = Auxiliary Heat U
V = Auxiliary Heat V
W = Auxiliary Heat W
Feature 4: MAINTENANCE OPTIONS
0 = Standard-None
A = Field Wired 115V Outlet
B = Factory Wired115VOutlet
C= Blower Aux.Contact
D = RemoteStart/StopTerminals
E = Options A +C
F = Options A +D
G = Options B+ C
H = Options B+ D
J = Options A +C+ D
K = Options B+ C + D
L = Options C+D

20
RN Series Feature String Nomenclature
:
SIZE
VLT
CONFIG
A1
A2
A3
A4
B1
B2
B3
1A
1B
1C
1D
2
3
4
5A
5B
5C
6A
6B
6C
7
8
9
10
11
12
13
14A
14B
15
16
17
18
19
20
21
22
23
R
N
–025–3–0–
B
B
0 2 –3 8 4 :
A
000–
D
0
B
–
D
E
H
–0
B
A
–0
D
0 0 0 0
L
–0 0 –0 0
B
0 0 0 0 0
B
GEN
Model Options
Unit Feature Options
Feature 5: SUPPLY AIR OPTIONS
5A: SUPPLYAIR BLOWER CONFIGURATION
0 = 1 Blower + Standard Efficiency Motor
A = 2 Blowers + StandardEfficiency Motor
B = 1 Blower + Premium Efficiency Motor
C = 2 Blowers + Premium Efficiency Motor
D = 1 Blower + Premium Efficiency Motor+1 VFD
F = 2 Blowers + Premium Efficiency Motors+2
Motorson 1VFD
G = 2 Blowers + Premium Efficiency Motors+2
Motorson 2VFDs
H = 1 Blower + Premium Efficiency TEFC Motor
J = 2 Blowers + PremiumEfficiency TEFC Motors
K = 1 Blower + Premium Efficiency TEFC Motor+
1 VFD
L = 2 Blowers + Premium Efficiency TEFC Motors+
2 Motors on1VFD
M = 2 Blowers + Premium Efficiency TEFC Motors
+ 2 Motorson2VFDs
N = Option D+ Shaft Grounding
P = Option F+ ShaftGrounding
Q = Option G+ Shaft Grounding
R = Option K+ Shaft Grounding
S = Option L+ Shaft Grounding
T = Option M +Shaft Grounding
5B:SUPPLY AIR BLOWER
B = 15” Backward Curved Plenum
C = 18.5” Backward Curved Plenum
D = 24” Backward Curved Plenum
E = 27” Backward Curved Plenum
F = 30” BC Plenum - 90% Width +1750 rpmMax-
AluminumWheel
G = 15” BC Plenum - 70% Width
H = 18.5” BC Plenum- 70% Width
J = 18.5” Backward Curved Plenum
K = 18.5” BC Plenum - 60% Width
L = 30” BC Plenum - 1600 rpmMax- Aluminum
Wheel
M = 13.5” Backward Curved Plenum
N = 13.5” BC Plenum - 70% Width
P = 24” BC Plenum - 60% Width
Q = 27” BC Plenum - 60% Width
R = 22” Backward Curved Plenum
S = 22” BC Plenum - 70% Width
T = 17” Backward Curved Plenum
U = 17” BC Plenum - 70% Width
V = 33” Backward Curved Plenum
W = 36.5” Backward Curved Plenum
Y = 42.5” Backward Curved Plenum