AAON RN Series Owner's manual

RN Series
Next Gen RN
(11-70tons)
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 must be kept
with the unit.
WARNING

3
Table ofContents
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
Installation .............................................................................................................................29
Locating Units....................................................................................................................29
Setting the Curb..................................................................................................................30
Forklifting the Unit (11, 13 and 16-30 ton) ..........................................................................32
Lifting the Unit...................................................................................................................32
Duct Connection.................................................................................................................35
Seismic Curb Installation ....................................................................................................36
Outside Air Rain Hood .......................................................................................................39
Metal Mesh Filters..............................................................................................................40
Electrical............................................................................................................................40
Variable Speed Compressors ...........................................................................................43
Thermostat Control Wiring..............................................................................................43
Condensate Drain Piping.....................................................................................................43
Draw-Through Coils ...........................................................................................................44
Startup ...................................................................................................................................45
Filters.................................................................................................................................45
Air Flow Monitoring...........................................................................................................45
Supply Fans........................................................................................................................46
Power Return Axial Flow Fans (16-25 and 30 tons) .............................................................48
Power Return and Exhaust Axial Flow Fans (26 and 31-70 tons)..........................................49
Adjusting Refrigerant Charge..............................................................................................51
Checking Liquid Sub-Cooling.........................................................................................51
Checking Evaporator Superheat.......................................................................................51
Adjusting Sub-cooling and Superheat Temperatures.........................................................53
Freeze Stat Startup..............................................................................................................53
Condenser Fan Electronically Commutated Motor (ECM) Startup........................................55
VFD Controlled Condenser Fan Startup...............................................................................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

4
Supply Fans........................................................................................................................59
Power Exhaust Motor and Belt Removal .............................................................................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
Packaged Direct Expansion (DX) Units...............................................................................67
Variable Capacity Compressor Controller ............................................................................68
Evaporator Coil(11-25 and 30 ton) .....................................................................................70
Condenser Fans (11-25 and 30 ton) .....................................................................................70
Refrigerant-to-Water Heat Exchanger..................................................................................71
Water-Source Heat Pump Applications ............................................................................71
Open Loop Applications..................................................................................................71
Freezing Water in the Heat Exchanger.............................................................................72
Water Piping...................................................................................................................73
Energy Recovery Units .......................................................................................................75
Aluminum Energy Recovery Wheel.................................................................................76
Polymer Energy Recovery Wheel....................................................................................78
Energy Recovery Wheel GeneralCleaning ......................................................................85
Energy Recovery Wheel Defrost Timer Setting...............................................................87
Gas or Electric Heating .......................................................................................................88
Electric Preheat...................................................................................................................90
Status Display Screens ....................................................................................................90
System Setting Screens ...................................................................................................91
LED Flash Alarm Codes .................................................................................................92
Operation........................................................................................................................93
Gas Heating........................................................................................................................93
Piping Sizing Examples...................................................................................................95
Inlet and Manifold Pressures ...........................................................................................95
Gas Pressure Regulator & Overpressure Protection Device...............................................95
Piping Supports...............................................................................................................95
Additional Gas Piping Considerations..............................................................................96
Leak Testing...................................................................................................................98
Gas Heater Operating Instructions ...................................................................................99
Gas Heating Maintenance..............................................................................................100
Gas Heat Exchanger Removal .......................................................................................100
Phase and Brownout Protection Module ............................................................................102
Filter Replacement............................................................................................................104
Replacement Parts ............................................................................................................107
Appendix A - Heat Exchanger Corrosion Resistance..............................................................108
Appendix B - Thermistor Temperature vs. Resistance Values ................................................110
RNA Series Startup Form .....................................................................................................111

5
Maintenance Log..................................................................................................................115
Maintenance Log (E-Coated Coil).........................................................................................116
Literature Change History.....................................................................................................117
Index of Tables and Figures
Tables:
Table 1 - C Cabinet Unit Clearances........................................................................................29
Table 2 - D Cabinet Unit Clearances .......................................................................................30
Table 3 - Nameplate Voltage Markings & Tolerances..............................................................40
Table 4 - Variable Speed Compressor Turndown Ratio............................................................43
Table 5 - Control Wiring.........................................................................................................43
Table 6 - Draw-Through Drain Trap Dimensions.....................................................................45
Table 7 - Plenum Fan Set Screw Specifications .......................................................................47
Table 8 - Pin Location ............................................................................................................49
Table 9 - Pin Groove Location ................................................................................................49
Table 10 - Acceptable Fin & Tube Air-Cooled Condenser CoilRefrigeration Circuit Values ....52
Table 11 - Acceptable Water-Cooled Refrigeration Circuit Values ...........................................52
Table 12 - Acceptable MicrochannelAir-Cooled Condenser CoilLiquid Sub-Cooling Values ..52
Table 13 - R-410A Refrigerant Temperature-Pressure Chart....................................................54
Table 14 - ECM Condenser Fan Cycling Options ....................................................................55
Table 15 - Steam Coil Connection Sizes ..................................................................................66
Table 16 - Hot Water Coil Connection Sizes............................................................................66
Table 17 - Chilled Water Coil Connection Sizes ......................................................................66
Table 18 - Demand Signal vs. Compressor Capacity Modulation..............................................69
Table 19 - Glycol Freezing Points ...........................................................................................73
Table 20 - Standard Brazed Plate Heat Exchanger Water Connections......................................74
Table 21 - Energy Recovery Wheel Cleaning Frequency..........................................................86
Table 22 - Electric and Gas Heating Capacities........................................................................89
Table 23 - Stages of Electric Preheat.......................................................................................91
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 (ft3/hr) Maximum Piping Capacities.....................................................94
Table 27 - Propane (kBtu/hr) Maximum Piping Capacities.......................................................94
Table 28 - Gas Piping Supports...............................................................................................96
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
Table 37 - RN Series D Cabinet 26, 31-50, 60, and 70 ton Energy Recovery Wheel Filters .....107

6
Figures:
Figure 1 - Lockable Handle.....................................................................................................28
Figure 2 - RN Series C Cabinet,..............................................................................................29
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
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
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
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
Figure 19 - Rain Hood with Metal Mesh Filter Rack Installation ..............................................40
Figure 20 - Unit Utility Entry..................................................................................................41
Figure 21 - Back View of Power Switch from Compressor and Control Compartment (11-50, 60,
and 70 ton Units)....................................................................................................................41
Figure 22 - Draw-Through Drain Trap.....................................................................................44
Figure 23 - Supply Fan Banding..............................................................................................47
Figure 24 - Plenum Fan Gap Tolerances..................................................................................47
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
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
Figure 34 - 11-25 and 30 ton Supply Fan.................................................................................60
Figure 35 - Bolts which Connect Motor Mount to Blower Fan .................................................60
Figure 36 - Variable Capacity Compressor Controller ..............................................................68
Figure 37 - Compressor Controller Flash Code Details.............................................................69
Figure 38 - Evaporator Coil Access.........................................................................................70
Figure 39 - Removalof a Condenser Fan Assembly.................................................................71
Figure 40 - Aluminum Energy Recovery Wheel ......................................................................76
Figure 41 - Aluminum ERW Purge Sector Location.................................................................77
Figure 42 - Polymer Energy Recovery Wheel..........................................................................79
Figure 43 - Wheel Segment Removal Pattern...........................................................................83
Figure 44 - Defrost Timer .......................................................................................................88

7
Figure 45 - Temperature Dial..................................................................................................88
Figure 46 - Preheat Controller.................................................................................................90
Figure 47 - RN Series Gas Heat Exchanger .............................................................................94
Figure 48 - Example 11-50, 60 & 70 ton through the Base Gas Piping......................................97
Figure 49 - Gas Heater Instructions .........................................................................................99
Figure 50 - Gas Heat Exchanger............................................................................................101
V01260 · Rev. A · 220113

8
AAON® RN Series Next Gen RN 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
ExtendedLife
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 that may 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 - Next GenRN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
MODEL OPTIONS
SERIES AND GENERATION
RN
MAJOR REVISION
A
UNIT SIZE
011 = 11 ton Capacity
013 = 13 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
060 = 60 ton Capacity
070 = 70 ton Capacity
SERIES
C = 11-25 & 30 ton units
D = 26, 31, 40, 50, 60 & 70ton units
MINOR REVISION
0
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
Model Option A: COOLING/HEAT PUMP
A1: COMPRESSORSTYLE
0 = No Compressor
A = R-410A Scroll Compressor
B = R-410A 2-Step Scroll Compressor
C = R-410A Variable Speed ScrollCompressor
D = R-410A Variable Capacity ScrollCompressor
A2: CONDENSER STYLE
0 = No Condenser
A = MicrochannelAir-Cooled Condenser
F = Water-CooledCondenser
N = DX AirHandling Unit
A3: INDOOR COIL CONFIGURATION
0 = No Cooling Coil
A = Standard Evaporator
B = 6 Row Evaporator
E = 4 Row Chilled WaterCoil
F = 6 RowChilled WaterCoil
A4: COOLING HEAT EXCHANGER
CONSTRUCTION
0 = Standard
A = Polymer E-Coated Cooling Coil
E = PolymerE-Coated Cond.Coil
J = Polymer E-Coated Evap.And Cond.Coil

16
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
A5: COOLING STAGING
0 = No Cooling
A = Variable Speed Tandem+TandemOn/Off
[40, 50, 60, 70 ton]
A = Variable Speed +TandemOn/Off[31 ton]
A = Variable Speed +On/Off [30 ton]
A = Variable Speed [16 ton]
A = Variable Speed +Two-Step [11, 13, 20-26 ton]
A = Variable Capacity Tandem+On/Off [40 ton]
A = Variable Capacity +TandemOn/Off[31 ton]
A = Variable Capacity +Two-Step [26ton]
A = Variable Capacity +On/Off[11-25 &30 ton]
B= DualVariable Capacity
F = Single Serpentine 8FPI
G = Half Serpentine8FPI
H = Single Serpentine 10FPI
J = Half Serpentine10FPI
K = Single Serpentine 12FPI
L = Half Serpentine12FPI
N = DX AirHandling Unit with 2 Refrigeration
Circuits
2 = 2 Stage
4 = 4 Stage
5 = 5 Stage
6 = 6 Stage
Model Option B: HEATING
B1:HEAT TYPE
0 = No Heat
A = Electric Heat
B = Electric Heat (RN Horizontal)
C= NaturalGas
D = NaturalGas (RN Horizontal)
F = LP Gas
G = LP Gas (RN Horizontal)
J = Hot WaterCoil
K = Hot WaterCoil (RN Horizontal)
L = SteamDistributing Coil
M = SteamDistributingCoil(RN Horizontal)
B2:HEAT CONSTRUCTION
0 = Standard
A = AluminumHeat Exchanger
B = Stainless SteelHeat Exchanger
C = High Altitude AluminumHeat Exchanger
D = High Altitude Stainless SteelHeat Exchanger
G = PolymerE-Coated Heating Coil
B3:HEAT DESIGNATION
0 = No Heat
1 = Heat 1
2 = Heat 2
3 = Heat 3
4 = Heat 4
5 = Heat 5
6 = Heat 6
7 = Heat 7
A = 1 Row
E = 2 Row
B4:HEAT STAGING
0 = No Heat
A = 1 Stage
B = 2 Stage
C = 3 Stage
D = 4 Stage
E = 5 Stage
F = 6 Stage
G = 7 Stage
H = 8 Stage
V = 10 Stage
J = 12 Stage
K = Modulating Gas Heat Temp Control
L = High TurndownModulating Gas Heat -
Temperature Control
M = Modulating SCRwith TemperatureControl
N = Modulating SCRwith External 0-10 VDC

17
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
B4:HEAT STAGING Continued
P = Single Serpentine 8FPI
Q = Half Serpentine8FPI
R= SingleSerpentine10FPI
S = Half Serpentine10FPI
T = SingleSerpentine12FPI
U = Half Serpentine12FPI
B5:HEAT PUMP AUX HEATING
0 = No Heat Pump
A = AuxHeat 1 for Heat Pump 1 Stage
B = AuxHeat 2 for Heat Pump 1 Stage
C = AuxHeat 3 for Heat Pump 1 Stage
D = AuxHeat 4 for Heat Pump 1 Stage
E = AuxHeat 5 forHeat Pump 1 Stage
F = AuxHeat 6 for Heat Pump 1 Stage
G = AuxHeat 7 for Heat Pump 1 Stage
K = AuxHeat 1 for Heat Pump 2 Stage
L = AuxHeat 2 forHeat Pump 2 Stage
M = AuxHeat 3 for Heat Pump 2 Stage
N = AuxHeat 4 for Heat Pump 2 Stage
P = AuxHeat 5 for Heat Pump 2 Stage
Q = AuxHeat 6 for Heat Pump 2 Stage
R = AuxHeat 7 for Heat Pump 2 Stage
U = AuxHeat 1 for Heat Pump 4 Stage
V = AuxHeat 2 for Heat Pump 4 Stage
W = AuxHeat 3 for Heat Pump 4 Stage
Y = AuxHeat 4 for Heat Pump 4 Stage
Z = AuxHeat 5 forHeat Pump 4 Stage
1 = AuxHeat 6 for Heat Pump 4 Stage
2 = AuxHeat 7 for Heat Pump 4 Stage
1: UNIT ORIENTATION
0 = StandardAccess -Hinged Access Doorswith
LockableHandles
A = Draw ThroughCompact Supply Fan,End
CompressorCompartment,Both Side Access
1: UNIT ORIENTATION Continued
B = Draw Through Compact Supply Fan,Walk-in
Vestibule with Left Vestibule Access,BothSide
Access
D = Draw ThroughCompact SupplyFan,Non-
Compressorized,End ControlPanel,Both Side
Access
2: SUPPLY & RETURN LOCATIONS
0 = BottomSupply--BottomReturn
A = BottomSupply--No Return
V = HorizontalConfiguration-End Supply--No
Return
Z = HorizontalConfiguration -End Supply--Right
Return
1 = HorizontalConfiguration-End Supply--End
Return
Feature 3: SUPPLY FAN OPTIONS
3A: SUPPLYFAN QUANTITY
0 = 1 Fan
A = 2 Fans
3B:SUPPLY FAN CONFIGURATION
0 = No VFDs + Full Width Fan
A = 1 Fan perVFD + FullWidth Fan
B = 2 Fans perVFD + Full Width Fan
E = No VFDs + NarrowWidth Fan
F = 1 Fan perVFD + NarrowWidth Fan
G = 2 Fans perVFD + NarrowWidth Fan
K = Option 0 + Inlet BackdraftDampers
L = Option A +Inlet Backdraft Dampers
M = Option B + Inlet Backdraft Dampers
Q = Option E + Inlet Backdraft Dampers
R = Option F+ Inlet Backdraft Dampers
S = Option G+ Inlet Backdraft Dampers

18
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
3C: SUPPLYFAN SIZE
0 = 13.5” Direct Drive Backward Curved Plenum
Aluminum
A = 15” Direct Drive Backward Curved Plenum
Aluminum
B = 17” Direct Drive Backward Curved Plenum
Aluminum
C = 18.5” Direct Drive Backward Curved Plenum
Aluminum
E = 22” Direct Drive Backward Curved Plenum
Aluminum
F = 24” Direct Drive Backward Curved Plenum
Aluminum
G = 27” Direct Drive Backward Curved Plenum
Aluminum
H = 30” Direct Drive Backward Curved Plenum
Aluminum
J = 30” Direct Drive Backward Curved PlenumSteel
K = 33” Direct Drive Backward Curved Plenum Steel
L = 36.5” Direct Drive Backward Curved Plenum
Aluminum
M = 42.5” Direct Drive Backward Curved Plenum
Aluminum
N = 355 mm Direct Drive Airfoil Aluminum
P = 400 mm Direct Drive Airfoil Aluminum
Q = 450 mm Direct Drive Airfoil Aluminum
R = 500 mm Direct Drive Airfoil Aluminum
S = 560 mm Direct Drive Airfoil Aluminum
T = 630 mm Direct Drive Airfoil Aluminum
3D:SUPPLYFAN MOTOR TYPE
0 = High Efficiency Open Motor
(1170 nominalrpm)
A = High Efficiency Open Motor
(1760 nominalrpm)
K = High Efficiency Totally Enclosed Motor
(1170 nominalrpm)
L = High Efficiency Totally EnclosedMotor
(1760 nominalrpm)
3E: SUPPLY FAN MOTOR SIZE
D = 1 hp
F = 2 hp
G = 3 hp
H = 5 hp
J = 7.5 hp
K = 10 hp
L = 15 hp
M = 20 hp
N = 25 hp
P = 30 hp
Q = 40 hp
R = 50 hp
Feature 4: RETURN/OUTSIDE AIR
OPTIONS
4A: OUTSIDE AIR SECTION
0 = 100% Outside Air
A = 100% Outside Airwith Motorized Dampers
B = ManualOutside Air+Return AirOpening
C = Motorized Outside AirDampers +Return Air
Opening
D = 100% Return Air
E = Economizer
F = Economizer + PowerExhaust (Axial Fans)
G = Economizer + PowerExhaust (PlenumFans)
H = Economizer + PowerReturn
J = Economizer + PowerReturn(PlenumFans)
K = Economizer + Energy Recovery
Q = Economizer + Energy Recovery+Bypass
Damper
4B:ENERGY RECOVERY TYPE
0 = No Energy Recovery
A = Polymer Energy RecoveryWheel
B = PolymerEnergy RecoveryWheel+1%Purge
C = AluminumEnergy RecoveryWheel
D = AluminumEnergy Recovery Wheel+1% Purge

19
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
4C:ENERGY RECOVERY SIZE
0 = No Energy Recovery
A = Low CFM Enthalpy
B = High CFM Enthalpy
C = Low CFM Enthalpy -Single Wheel
E = Low CFM Sensible
F = High CFM Sensible
J = Low CFM Enthalpy +Exhaust Filters
K = High CFM Enthalpy +Exhaust Filters
L = Low CFM Enthalpy -Single Wheel+Exhaust
Filters
N = Low CFM Sensible +Exhaust Filters
P = High CFM Sensible +Exhaust Filters
Feature 5: RETURN FAN OPTIONS
5A: RETURN FAN QUANTITY
0 = No Return Fan
A = 1 Fan
B = 2 Fans
5B:RETURN FAN CONFIGURATION
0 = No Return Fan
A = No VFDs + Full Width Fan
B = 1 Fan perVFD + Full Width Fan
C = 2 Fans perVFD + Full Width Fan
F = No VFDs + NarrowWidth Fan
G = 1 Fan perVFD + NarrowWidth Fan
H = 2 Fans perVFD + NarrowWidth Fan
L = Option A +Inlet Backdraft Dampers
M = Option B + Inlet Backdraft Dampers
N = Option C + Inlet Backdraft Dampers
R = Option F+ Inlet Backdraft Dampers
S = Option G+ Inlet Backdraft Dampers
T = Option H+ Inlet Backdraft Dampers
5C: RETURN FAN SIZE
0 = No Return Fan
A = 16” Axial Fan
B = 22” Axial Fan
C = 36” Axial Fan
D = 42” 9 Blade Axial Fan
5C: RETURN FAN SIZE Cont
E = 42” 12 Blade Axial Fan
F = 48” Axial Fan
G = 12x9 Forward Curved
H = 15” Direct Drive Backward Curved Plenum
Aluminum
J = 18.5” Direct Drive Backward Curved Plenum
Aluminum
L = 22” Direct Drive Backward Curved Plenum
Aluminum
M = 24” Direct Drive Backward Curved Plenum
Aluminum
N = 27” Direct Drive Backward Curved Plenum
Aluminum
P = 30” Direct Drive Backward Curved Plenum
Aluminum
Q = 30” Direct Drive Backward Curved Plenum Steel
R = 33” Direct Drive Backward Curved Plenum Steel
S = 36.5” Direct Drive Backward Curved Plenum
Aluminum
T = 42.5” Direct Drive Backward Curved Plenum
Aluminum
U = 355 mm Direct Drive Airfoil Aluminum
V = 400 mm Direct Drive Airfoil Aluminum
W = 450 mm Direct Drive Airfoil Aluminum
Y = 500 mm Direct Drive Airfoil Aluminum
Z = 560 mm Direct Drive Airfoil Aluminum
1 = 630 mm Direct Drive Airfoil Aluminum
5D:RETURN FAN MOTOR TYPE
0 = No Return Fan
A = High Efficiency Open Motor
(1170 nominalrpm)
B = High Efficiency Open Motor
(1760 nominalrpm)
L = High Efficiency Totally EnclosedMotor
(1170 nominalrpm)
M = High Efficiency Totally EnclosedMotor
(1760 nominalrpm)

20
RN Series - Next Gen RN Feature String Nomenclature
GEN
MJREV
SIZE
SERIES
MNREV
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
3E
4A
4B
4C
5A
5B
5C
5D
5E
6A
6B
6C
6D
6E
7
8
9A
9B
9C
9D
RN
A
-
030
-
C
-
0
-
3
-
C
A
B
0
A
-
0
0
0
0
0
:
0
1
-
0
A
G
0
K
-
E
0
0
-
0
0
0
0
0
-
0
0
0
0
0
-
C
A
-
0
0
0
0
-
0
0
-
0
0
-
0
-
0
0
0
-
0
0
-
B
A
0
B
-
0
0
-
0
0
0
-
A
0
0
0
0
0
-
C
0
0
0
0
0
-
0
0
0
0
0
0
B
10A
10B
11A
11B
12
13A
13B
13C
14
15
16A
16B
16C
16D
17A
17B
18A
18B
18C
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
5E: RETURN MOTOR SIZE
0 = No Return Fan
E = 1 hp
G = 2 ph
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp
N = 20 hp
P = 25 hp
Q = 30 hp
R = 40 hp
S = 50 hp
Feature 6: EXHAUST FAN OPTIONS
6A: EXHAUST FAN QUANTITY
0 = No Exhaust Fan
A = 1 Fan
B = 2 Fans
6B:EXHAUST FAN CONFIGURATION
0 = No Exhaust Fan
A = No VFDs + Full Width Fan
B = 1 Fan perVFD + Full Width Fan
C = 2 Fans perVFD + Full Width Fan
F = No VFDs + NarrowWidth Fan
G = 1 Fan perVFD + NarrowWidth Fan
H = 2 Fans perVFD + NarrowWidth Fan
L = Option A +Inlet Backdraft Dampers
M = Option B + Inlet Backdraft Dampers
N = Option C + Inlet Backdraft Dampers
R = Option F+ Inlet Backdraft Dampers
S = Option G+ Inlet Backdraft Dampers
T = Option H+ Inlet Backdraft Dampers
6C: EXHAUST FAN SIZE
0 = No Exhaust Fan
C= 36" Axial Fan
L = 22” Direct Drive Backward Curved Plenum
Aluminum
6C: EXHAUST FAN SIZE Continued
M = 24” Direct Drive Backward Curved Plenum
Aluminum
N = 27” Direct Drive Backward Curved Plenum
Aluminum
P = 30” Direct Drive Backward Curved Plenum
Aluminum
Q = 30” Direct Drive Backward Curved Plenum Steel
R = 33” Direct Drive Backward Curved Plenum Steel
S = 36.5” Direct Drive Backward Curved Plenum
Aluminum
T = 42.5” Direct Drive Backward Curved Plenum
Aluminum
6D:EXHAUST FAN MOTOR TYPE
0 = No Exhaust Fan
A = High Efficiency Open Motor
(1170 nominalrpm)
B = High Efficiency Open Motor
(1760 nominalrpm)
L = High Efficiency Totally EnclosedMotor
(1170 nominalrpm)
M = High Efficiency Totally EnclosedMotor
(1760 nominalrpm)
6E: EXHAUST MOTOR SIZE
0 = No Exhaust Fan
E = 1 hp
G = 2 ph
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp
N = 20 hp
P = 25 hp
Q = 30 hp
R = 40 hp
S = 50 hp