AAON RN Series Owner's manual

RN SERIES
Horizontal Packaged Rooftop Units, Heat Pumps,
& Outdoor Air 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 should be kept
with the unit.
WARNING

3
Table of Contents
Safety .............................................................................................................................................. 8
RN Series Feature String Nomenclature........................................Error! Bookmark not defined.
General Information...................................................................................................................... 24
Codes and Ordinances .............................................................................................................. 24
Receiving Unit.......................................................................................................................... 25
Packaged Direct Expansion (DX) Units................................................................................... 26
Gas or Electric Heating............................................................................................................. 27
Wiring Diagrams....................................................................................................................... 28
Condensate Drain Pan............................................................................................................... 28
Installation..................................................................................................................................... 28
Locating Units........................................................................................................................... 28
Setting the Curb........................................................................................................................ 29
Forklifting the Unit (11, 13 and 16-30 ton).............................................................................. 31
Lifting the Unit ......................................................................................................................... 31
Duct Connection....................................................................................................................... 33
Outside Air Rain Hood............................................................................................................. 35
Metal Mesh Filters (11, 13 and 16-30 ton)............................................................................... 36
Electrical................................................................................................................................... 36
Thermostat Control Wiring................................................................................................... 38
Gas Heating............................................................................................................................... 39
Piping Sizing Examples........................................................................................................ 41
Inlet and Manifold Pressures ................................................................................................ 41
Gas Pressure Regulator & Overpressure Protection Device................................................. 41
Piping Supports..................................................................................................................... 41
Additional Gas Piping Considerations.................................................................................. 42
Leak Testing.......................................................................................................................... 43
Refrigerant-to-Water Heat Exchanger...................................................................................... 43
Water-Source Heat Pump Applications................................................................................ 43
Open Loop Applications....................................................................................................... 44
Freezing Water in the Heat Exchanger................................................................................. 45
Water Piping ......................................................................................................................... 45
Condensate Drain Piping.......................................................................................................... 48
Draw-Through Coils................................................................................................................. 49
Heating Coils ............................................................................................................................ 50
Chilled Water Coil.................................................................................................................... 50
Electric Preheat......................................................................................................................... 51
Status Display Screens.......................................................................................................... 51
System Setting Screens......................................................................................................... 52
LED Flash Alarm Codes....................................................................................................... 54
Operation............................................................................................................................... 54
Energy Recovery Units............................................................................................................. 55
Startup........................................................................................................................................... 63
Supply Fans............................................................................................................................... 63
Power Return Axial Flow Fans (16-25 and 30 tons)................................................................ 65
Filters........................................................................................................................................ 67

4
Adjusting Refrigerant Charge................................................................................................... 68
Checking Liquid Sub-Cooling.............................................................................................. 68
Checking Evaporator Superheat............................................................................................ 68
Adjusting Sub-cooling and Superheat Temperatures............................................................ 69
Gas Heater Instructions............................................................................................................. 71
Condenser Fan Electronically Commutated Motor (ECM) Startup ......................................... 72
VFD Controlled Condenser Fan Startup................................................................................... 73
Adjustable Fan Cycling Switch Procedure............................................................................... 74
Operation....................................................................................................................................... 76
Thermostat Operation ............................................................................................................... 76
Packaged DX Cooling Operation and Control ......................................................................... 77
Gas Heater Operation................................................................................................................ 77
Electric Heating Operation ....................................................................................................... 77
Steam or Hot Water Preheating and Heating Operation........................................................... 77
Modulating Electric Preheat ..................................................................................................... 77
Chilled Water or Non-Compressorized DX Cooling Operation............................................... 77
Maintenance.................................................................................................................................. 78
Gas Heating............................................................................................................................... 78
Gas Heat Exchanger Removal.................................................................................................. 79
DX Cooling............................................................................................................................... 79
Condenser Fans (6-25 and 30 ton)............................................................................................ 79
Condensate Drain Pans............................................................................................................. 80
Evaporator Coil (6-25 and 30 ton)............................................................................................ 81
Brazed Plate Heat Exchanger Cleaning.................................................................................... 82
E-Coated Coil Cleaning............................................................................................................ 82
Microchannel Coil Cleaning..................................................................................................... 83
Supply Fans............................................................................................................................... 85
Phase and Brownout Protection Module .................................................................................. 86
Variable Capacity Compressor Controller................................................................................ 89
Filter Replacement.................................................................................................................... 90
Filter Information.......................................................................................................................... 91
Replacement Parts..................................................................................................................... 92
Appendix A - Heat Exchanger Corrosion Resistance................................................................... 93
Appendix B - Thermistor Temperature vs. Resistance Values..................................................... 95
RN Series Startup Form................................................................................................................ 96
Maintenance Log ........................................................................................................................ 100
Literature Change History........................................................................................................... 101
V76270 · Rev. A · 170727

5
Index of Tables and Figures
Tables:
Table 1 - Electric and Gas Heating Capacities ............................................................................. 28
Table 2 - C Cabinet Unit Clearances ............................................................................................ 29
Table 3 - Control Wiring............................................................................................................... 39
Table 4 -11, 13, 16-25 and 30 ton................................................................................................. 39
Table 5 - Natural Gas (ft3/hr) Maximum Piping Capacities ......................................................... 40
Table 6 - Propane (kBtu/hr) Maximum Piping Capacities ........................................................... 40
Table 7 - Gas Piping Supports...................................................................................................... 41
Table 8 - Glycol Freezing Points .................................................................................................. 45
Table 9 - Standard Brazed Plate Heat Exchanger Water Connections......................................... 46
Table 10 - SMO 254 Brazed Plate Heat Exchanger Water Connections...................................... 46
Table 11 - Draw-Through Drain Trap Dimensions ...................................................................... 49
Table 12 - Steam Coil Connection Sizes ...................................................................................... 50
Table 13 - Hot Water Coil Connection Sizes................................................................................ 50
Table 14 - Chilled Water Coil Connection Sizes.......................................................................... 50
Table 15 - Stages of Electric Preheat............................................................................................ 53
Table 16 - Plenum Fan Set Screw Specifications......................................................................... 64
Table 17 - Pin Location................................................................................................................. 67
Table 18 - Pin Groove Location.................................................................................................... 67
Table 19 - Acceptable Refrigeration Circuit Values................................................................. 69
Table 20 - R-410A Refrigerant Temperature-Pressure Chart....................................................... 70
Table 21 - ECM Condenser Fan Cycling Options........................................................................ 72
Table 22 - Demand Signal vs. Compressor Capacity Modulation................................................ 89
Table 23 - RN Series 11, 13, 16-25 and 30 ton Pre Filters........................................................... 91
Table 24 - RN Series 11, 13, 16-25 and 30 ton Unit Filters......................................................... 91
Table 25 - RN Series 11, 13, 16-25 and 30 ton Energy Recovery Wheel Filters......................... 91
Table 26 - RN Series 11, 13, 16-25 and 30 ton Final Filters........................................................ 91

6
Figures:
Figure 1 - Lockable Handle .......................................................................................................... 25
Figure 2 - RN Series C Cabinet, ................................................................................................... 29
Figure 3 - Forklifting an RN Series A, B and C Cabinet, 11, 13 and 16-30 ton tons................... 31
Figure 4 - Lifting Details of a 11, 13 and 16-30 ton tons ton Standard or Power Exhaust Unit .. 32
Figure 5 - Lifting Details of a 11, 13 and 16-30 ton tons Energy Recovery Wheel or Power
Return Unit.................................................................................................................................... 32
Figure 6 - Duct Connection........................................................................................................... 34
Figure 7 - 11, 13 and 16-30 ton..................................................................................................... 35
Figure 8 - 11, 13 and 16-30 ton..................................................................................................... 35
Figure 9 - Rain Hood with Metal Mesh Filter Rack Installation.................................................. 36
Figure 10 - Unit Utility Entry ....................................................................................................... 37
Figure 11 - Back View of Power Switch from Compressor and Control Compartment (11, 13 and
16-30 ton Units)............................................................................................................................ 37
Figure 12 - RN Series Gas Heat Exchanger.................................................................................. 40
Figure 13 - Example 11, 13, 16-25 and 30 ton through the Base Gas Piping............................... 42
Figure 14 - Draw-Through Drain Trap......................................................................................... 49
Figure 15 - Preheat Controller ...................................................................................................... 51
Figure 16 - Supply Fan Banding................................................................................................... 64
Figure 17 - Plenum Fan Gap Tolerances ...................................................................................... 65
Figure 18 - Fan with the HUB on the Top and RET on the Bottom............................................. 65
Figure 19 - Bushing Mount Location............................................................................................ 66
Figure 20 - RET with Pin in Groove 4.......................................................................................... 66
Figure 21 - Fan HUB and RET Castings...................................................................................... 66
Figure 22 - Gas Heater Instructions.............................................................................................. 71
Figure 23 - Gas Heat Exchanger................................................................................................... 79
Figure 24 - Removal of a Condenser Fan Assembly.................................................................... 80
Figure 25 - Evaporator Coil Access.............................................................................................. 81
Figure 26 - 9-25 and 30 ton Supply Fan....................................................................................... 86
Figure 27 - Bolts which Connect Motor Mount to Blower Fan.................................................... 86
Figure 28 - Variable Capacity Compressor Controller................................................................. 89
Figure 29 - Compressor Controller Flash Code Details................................................................ 90
Figure 30 - RN Series 11, 13, 16-25 and 30 ton Units ton Standard Filter Layouts..................... 92

7
AAON®RN Series Horizontal Configuration
Features and Options Introduction
Energy Efficiency
Direct Drive Backward Curved Plenum
Supply Fans
Variable Capacity 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
Electric Preheat
Phase and Brown Out Protection
Supply/Return Smoke Detectors
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
System Integration
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
Polymer E-Coated Coils - 5 Year
Warranty
Stainless Steel Coil Casing
Stainless Steel Drain Pans

8
Safety
Attention should be paid to the following statements:
NOTE - Notes are intended to clarify the unit installation, operation, and maintenance.
CAUTION - Caution statements are given 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

9
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
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, should be
followed.
WARNING
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
GROUNDING REQUIRED
All field installed wiring must be
completed by qualified personnel.
Field installed wiring must comply
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

10
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
should be checked for proper
operation. Alterations should 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
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 should be field supplied on
system water piping.
WARNING

11
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 chemical coil
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
Cleaning the cooling tower or
condenser water loop with harsh
chemicals such as hydrochloric acid
(muriatic acid), chlorine or other
chlorides, can damage the
refrigerant-to-water heat exchanger.
Care should 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

12
1. Startup and service must be performed
by a Factory Trained Service
Technician.
2. Use only with type of the gas approved
for the furnace. Refer to 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 system external static
pressure (ESP) as specified on the unit
nameplate.
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 should 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.
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
5 MINUTE MINIMUM OFF TIME
To prevent motor overheating
compressors must cycle off for a
minimum of 5 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 6
starts per hour.
WARNING
WARNING

13
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
030 = 30 ton Capacity
SERIES
C = 011, 013, 016, 018, 020, 025, 030 units
MINOR REVISION
0
VOLTAGE
2 = 230V/3Φ/60Hz
3 = 460V/3Φ/60Hz
4 = 575V/3Φ/60Hz
6 = 380V/3Φ/50Hz
8 = 208V/3Φ/60Hz
Model Option A: COOLING/HEAT PUMP
A1: COMPRESSOR STYLE
0 = No Compressor
A = R-410A Scroll Compressor
D = R-410A Variable Capacity Scroll Compressor
A2: CONDENSER STYLE
0 = No Condenser
A = Microchannel Air-Cooled Condenser
F = Water-Cooled Condenser
J = Air-Source Heat Pump
L = Water-Source Heat Pump
N = DX Air Handling Unit
A3: INDOOR COIL CONFIGURATION
0 = No Cooling Coil
A = Standard Evaporator
B = 6 Row Evaporator
E = 4 Row Chilled Water Coil
F = 6 Row Chilled Water Coil
A4: COOLING HEAT EXCHANGER
CONSTRUCTION
0 = Standard
A = Polymer E-Coated Cooling Coil
B = Stainless Steel Cooling Coil Casing
E = Polymer E-Coated Cond. Coil
J = Polymer E-Coated Evap. And Cond. Coil
N = SMO 254 Corrosion Resistant Refrigerant-to-
Water Heat Exchanger
P = Polymer E-Coated Evap. Coil + SMO 254
Corrosion Resistant Refrigerant-to-Water Heat
Exchanger
Q = Stainless Steel Evap. Coil Casing + SMO 254
Corrosion Resistant Refrigerant-to-Water Heat
Exchanger
A5: COOLING STAGING
0 = No Cooling
A = 1 Variable Capacity Comp + 1 On/Off Comp
B = 2 Variable Capacity Comp
F = Single Serpentine 8 FPI
G = Half Serpentine 8 FPI
H = Single Serpentine 10 FPI
J = Half Serpentine 10 FPI
K = Single Serpentine 12 FPI
L = Half Serpentine 12 FPI
N = DX Air Handler with 2 Refrigeration Circuits
2 = 2 Stage

14
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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 Option B: HEATING
B1: HEAT TYPE
0 = No Heat
B = Electric Heat
D = Natural Gas
G = LP Gas
K = Hot Water Coil
B2: HEAT CONSTRUCTION
0 = Standard
A = Aluminized Heat Exchanger
B = Stainless Steel Heat Exchanger
C = High Altitude Aluminized Heat Exchanger
D = High Altitude Stainless Steel Heat Exchanger
G= Polymer E-Coated Heating Coil
B3: HEAT DESIGNATION
0 = No Heat
1 = 20 kW
2 = 40 kW
3 = 60 kW
4 = 80 kW
5 = 100 kW
6 = 120 kW
1= 270 MBH
2= 405 MBH
3= 540 MBH
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
K = Modulating Gas Heat
L = High Turndown Modulating Gas Heat
M = Modulating SCR Electric with Potentiometer
Control
N = Modulating SCR Electric with External 0-10
VDC
P = Single Serpentine 8 FPI
Q = Half Serpentine 8 FPI
R = Single Serpentine 10 FPI
S = Half Serpentine 10 FPI
T = Single Serpentine 12 FPI
U = Half Serpentine 12 FPI

15
RN Series Feature String Nomenclature
GEN
MJREV
SIZE
SERIE S
MNRE V
VLT
A1
A2
A3
A4
A5
B1
B2
B3
B4
B5
1
2
3A
3B
3C
3D
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
B5: HEAT PUMP AUX HEATING
0 = No Heat Pump
A = Aux Heat 1 for Heat Pump 1 Stage
B = Aux Heat 2 for Heat Pump 1 Stage
C = Aux Heat 3 for Heat Pump 1 Stage
D = Aux Heat 4 for Heat Pump 1 Stage
E = Aux Heat 5 for Heat Pump 1Stage
F = Aux Heat 6 for Heat Pump 1 Stage
K = Aux Heat 1 for Heat Pump 2 Stage
L = Aux Heat 2 for Heat Pump 2 Stage
M = Aux Heat 3 for Heat Pump 2 Stage
N = Aux Heat 4 for Heat Pump 2 Stage
P = Aux Heat 5 for Heat Pump 2 Stage
Q = Aux Heat 6 for Heat Pump 2 Stage
U = Aux Heat 1 for Heat Pump 4 Stage
V = Aux Heat 2 for Heat Pump 4 Stage
W = Aux Heat 3 for Heat Pump 4 Stage
Y = Aux Heat 4 for Heat Pump 4 Stage
Z = Aux Heat 5 for Heat Pump 4 Stage
1 = Aux Heat 6 for Heat Pump 4 Stage
1: UNIT ORIENTATION
0 = Standard Access - Hinged Access Doors with
Lockable Handles
2: SUPPLY & RETURN LOCATIONS
V = End Supply--No Return
Z= End Supply--Right Return
1 = Horizontal Configuration- End Supply--End
Return
W = Horizontal Configuration –End Supply –
Bottom Return
Feature 3: SUPPLY FAN OPTIONS
3A: SUPPLY FAN CONFIGURATION
0 = 1 Fan
D = 1 Fan + Factory Installed VFD
N = 1 Fan + Field Installed VFD
3B: SUPPLY FAN
L = 22" Direct Drive Backward Curved Plenum -
100% Width Aluminum
N = 24" Direct Drive Backward Curved Plenum -
100% Width Aluminum
P = 24" Direct Drive Backward Curved Plenum -
70% Width Aluminum
Q = 27" Direct Drive Backward Curved Plenum -
100% Width Aluminum
R = 27" Direct Drive Backward Curved Plenum -
70% Width Aluminum
3C: SUPPLY FAN MOTOR TYPE
0 = High Efficiency Motor (1,200 nominal rpm)
A = High Efficiency Motor (1,800 nominal rpm)
3D: SUPPLY FAN MOTOR SIZE
E = 1 hp
G = 2 hp
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp

16
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
Feature 4: RETURN/OUTSIDE AIR
OPTIONS
4A: OUTSIDE AIR SECTION
0 = 100% Outside Air
A = 100% Outside Air with Motorized Dampers
B = Manual Outside Air + Return Air Opening
C = Motorized Outside Air Dampers + Return Air
Opening
D = 100% Return Air
E = Economizer
G = Econ + Power Exhaust
H = Econ + Power Return
K = Econ + Energy Recovery
Q = Econ + Energy Recovery + Bypass Damper
4B: ENERGY RECOVERY TYPE
0 = No Energy Recovery
A = Energy Recovery Wheel
B= Energy Recovery Wheel + 1% Purge
4C: ENERGY RECOVERY SIZE
0 = No Energy Recovery
A = Low CFM Enthalpy
B = High CFM Enthalpy
E = Low CFM Sensible
F = High CFM Sensible
J = Low CFM Enthalpy + Exhaust Filters
K = High CFM Enthalpy + Exhaust Filters
N = Low CFM Sensible + Exhaust Filters
P = High CFM Sensible + Exhaust Filters
Feature 5: RETUREN FAN OPTIONS
5A: RETURN FAN CONFIGURATION
0 = Standard
A = 1 Fan
B = 2 Fans
C = 1 Fan + Factory Installed VFD
D = 2 Fans + 1 Factory Installed VFD
E = 2 Fans + 2 Factory Installed VFD's
G = 1 Fan + Field Installed VFD
H = 2 Fans + 1 Field Installed VFD
J = 2 Fans + 2 Field Installed VFD's
5B: RETURN FANS
0 = Standard
B = 22" Direct Drive Axial Flow Fan
5C: RETURN FAN MOTOR TYPE
0 = Standard
A = High Efficiency Motor (1,200 nominal rpm)
B = High Efficiency Motor (1,800 nominal rpm)
5D: RETURN MOTOR SIZE
0 = Standard
E = 1 hp
G = 2 hp
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp
N = 20 hp

17
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
Feature 6: EXHAUST FAN OPTIONS
6A: EXHAUST FAN CONFIGURATION
0 = Standard
A = 1 Fan
C = 1 Fan + Factory Installed VFD
G = 1 Fan + Field Installed VFD
6B: EXHAUST FAN
0 = Standard
L = 22" Backward Curved Plenum Fan - 100% Width
Aluminum
T= 22" Backward Curved Plenum Fan - 70% Width
Aluminum
6C: EXHAUST FAN MOTOR TYPE
0 = Standard
B = High Efficiency Motor (1,800 nominal rpm)
6D: EXHUAST MOTOR
0 = Standard
E = 1 hp
G = 2 hp
H = 3 hp
J = 5 hp
K = 7.5 hp
L = 10 hp
M = 15 hp
N = 20 hp
7: O/A CONTROL
0 = Standard
A = 3 Position Actuator - Sensible Limit
B = 3 Position Actuator - Enthalpy Limit
C = Fully Modulating Actuator - Sensible Limit
D = Fully Modulating Actuator - Enthalpy Limit
E = DDC Actuator
F = Constant Volume Outside Air
G = Options A + F
H = Options B + F
J = Options C + F
K = Options D + F
L = Options E + F
M = 3 Pos. Act. - Sensible Limit + CO2 Override
N = 3 Pos. Act. - Enthalpy Limit + CO2 Override
P = Fully Mod. Act. - Sensible + CO2 Override
Q = Fully Mod. Act. - Enthalpy + CO2 Override
R = DDC Actuator + CO2 Override
S = Dual Minimum Position Potentiometers + Fully
Mod. Act. - Sensible Limit
T = Dual Minimum Position Potentiometers + Fully
Mod. Act. - Enthalpy Limit
U = 2 Position Actuator
8: EXHAUST DAMPERS & RA BYPASS
0 = No Return Opening
A = Standard Return Opening without EA Dampers
C = Standard Barometric Relief EA Dampers
G= Standard Barometric without EA Dampers + RA
Bypass
J = Standard Barometric Relief EA Dampers + RA
Bypass

18
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
Feature 9: FILTER OPTIONS
9A: UNIT FILTER TYPE
0 = 2” Pleated - 30% Eff. - MERV 8
A = 4” Pleated - 30% Eff. - MERV 8
B = 2" Pleated MERV 8 + 4" Pleated MERV 11
C = 2" Pleated MERV 8 + 4" Pleated MERV 13
D = 2" Pleated MERV 8 + 4" Pleated MERV 14
9B: PRE FILTER BOX SIZE/LOCATION
0 = Standard Filters in Standard Position
B = High Efficiency Filters in Standard Position
9C: FINAL FILTER TYPE
0 = No Final Filters
A = 12" Cartridge MERV 13
D = 12" Cartridge MERV 14
U= 4" Pleated MERV 13
Y= 4" Pleated MERV 14
9D: FILTER OPTIONS
0 = None
A = Clogged Filter Switch - Unit Filters
B = Clogged Filter Switch - Unit + Energy Recovery
Filters
C = Clogged Filter Switch - Unit + Final Filters
D = Clogged Filter Switch - Unit + Energy Recovery
+ Final Filters
E = Magnehelic Gauge - Unit Filters
F = Magnehelic Gauge - Unit + Energy Recovery
Filters
G = Magnehelic Gauge - Unit + Final Filters
H = Magnehelic Gauge - Unit + Energy Recovery +
Final Filters
J = CFS + Magnehelic Gauge - Unit Filters
K = CFS + Magnehelic Gauge - Unit + Energy
Recovery Filters
L = CFS + Magnehelic Gauge - Unit + Final Filters
M = CFS + Magnehelic Gauge - Unit + Energy
Recovery + Final Filters
Feature 10: REFRIGERATION CONTROL
10A: REFRIGERATION CONTROL
0 = None
A = 5 Minute Compressor Off Timer and 20 Second
Compressor Stage Delay
D = Adjustable Compressor Lock Out
E = Freeze Stats (each circuit)
H = Option A + D
J = Option A + E
M = Adjustable Fan Cycling with Adjustable
Compressor Lockout
P = Option D + E
T = Option M + E
V = Option A +M+ E
W = Option A + D + E
10B: BLANK
0 = None

19
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
Feature 11: REFRIGERATION OPTIONS
11A: REFRIGERATION OPTIONS
0 = None
A = Hot Gas Bypass Lead Stage
B = Hot Gas Bypass Lead and Lag Stages
C = On/Off Hot Gas Reheat
D = Hot Gas Bypass Non-Variable Compressor
Circuits
E = Modulating Hot Gas Reheat
G = Options A + C
H = Options B + C
J = Options A + E
K = Options B + E
L = Options D + C
M = Options D + E
P = Polymer E-Coated On/Off Hot Gas Reheat
Q = Polymer E-Coated Modulating Hot Gas Reheat
R = Options A + P
S = Options B + P
T = Options A + D
U = Options B + Q
V = Options D + P
W = Options D + Q
11B: BLANK
0 = None
12: REFRIGERATION ACCESSORIES
0 = None
A = Sight Glass
B = Compressor Isolation Valves
C = Option A + B
D = One Circuit 0°F Low Ambient
E = Option A + D
F = Option B + D
G = Option A + B + D
Feature 13: POWER OPTIONS
13A: UNIT DISCONNECT TYPE
0 = Single Point Power - Standard Power Block
A = Single Point Power - Non-fused Disconnect
Power Switch
13B: DISCONNECT 1 SIZE
N = 100 amps
R = 150 amps
U = 225 amps
Z = 400 amps
3 = 600 amps
13C: BLANK
0 = None
14: SAFETY OPTIONS
0 = None
A = Return and Supply Air Firestat
B = Return Air Smoke Detector
C = Supply Air Smoke Detector
E = Remote Safety Shutdown Terminals
F = Option A + B
G = Option A + C
J = Option A + E
K = Option B + C
M = Option B + E
P = Option C + E
R = Option A + B + C
T = Option A + B + E
V = Option A + C + E
Z = Option B + C + E
4 = Option A + B + C + E

20
RN Series 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
4A
4B
4C
5A
5B
5C
5D
6A
6B
6C
6D
7
8
9A
9B
9C
9D
10A
10B
RN
A
-
11
-
C
0
-
3
-
A
A
A
0
2
-
B
0
1
B
0
:
0
1
-
D
Q
0
J
-
E
0
0
-
0
0
0
0
-
0
0
0
0
-
D
A
-
A
0
A
A
-
A
0
B
0
-
G
-
0
0
0
-
4
A
-
E
A
0
0
-
0
0
-
5
W
0
-
B
F
0
Q
A
0
-
A
0
0
0
0
0
-
0
0
0
0
0
0
X
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
15: ACCESSORIES
0 = None
A = Low Limit Controls
B = Phase & Brown Out Protection
F = Option A + B
Feature 16: UNIT CONTROLS
16A: CONTROL SEQUENCE
0 = Standard Terminal Block for Thermostat
A = Terminal Block for Thermostat + Isolation
Relays
B = Single Zone VAV Unit Controller - VAV Cool +
CAV Heat
C = Single Zone VAV Unit Controller - VAV Cool +
VAV Heat
D = VAV Unit Controller - VAV Cool + CAV Heat
E = Constant Air Volume Unit Controller - CAV
Cool + CAV Heat
F = Makeup Air Unit Controller
G = Single Zone VAV Heat Pump Unit Controller -
VAV Cool + VAV Heat
H = Constant Air Volume Heat Pump Unit Controller
- CAV Cool + CAV Heat
J = Makeup Air Heat Pump Unit Controller - CAV
Cool + CAV Heat
K = PAC - Precise Air Controller (No VCC)
L = D-PAC - Digital Precise Air Controller
M = Field Installed DDC Controls by Others
N = Field Installed DDC Controls + Installation
Relays
P = Factory Installed DDC Controls by Others +
Installation Relays
16B: CONTROL SUPPLIER
0 = None
A = WattMaster VCM-X
C = WattMaster VCB-X
J = AAON Touchscreen Controller
K = WattMaster VCC-X
16C: CONTROL SUPPLIER OPTIONS
0 = None
16D: BMS CONNECTION & DIAGNOSTICS
0 = None
A = BACnet IP
B = BACnet MSTP
C = Modbus IP
D = Modbus RTU
E = Lontalk