Carrier WeatherExpert 48N2 User guide

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480165-01 Printed in U.S.A. Form 48-50N-7T Pg 1 12-2020 Replaces: 48-50N-6T
Controls, Start-Up, Operation,
Service and Troubleshooting
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Conventions Used in This Manual . . . . . . . . . . . . . . . 4
BASIC CONTROL USAGE . . . . . . . . . . . . . . . . . . . . . 4
ComfortLink Controls . . . . . . . . . . . . . . . . . . . . . . . . . 4
Navigator™ Display . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
System Pilot™ Interface . . . . . . . . . . . . . . . . . . . . . . . 5
CCN Tables and Display . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Accessory Installation . . . . . . . . . . . . . . . . . . . . . . . . 7
Crankcase Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Evaporator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CONTROLS QUICK START . . . . . . . . . . . . . . . . . . . 27
VAV Units Using Return Air Sensor or Space
Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . 27
Multi-Stage CV and SAV Units with Mechanical
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Multi-Stage CV and SAV Units with Space Sensor . 27
Economizer Configurations . . . . . . . . . . . . . . . . . . . 27
Indoor Air Quality Configurations . . . . . . . . . . . . . . 28
Exhaust Configurations . . . . . . . . . . . . . . . . . . . . . . 28
Set Clock on VFD . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Programming Operating Schedules . . . . . . . . . . . . 29
SERVICE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Service Test Mode Logic . . . . . . . . . . . . . . . . . . . . . 29
Independent Outputs . . . . . . . . . . . . . . . . . . . . . . . . 29
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Actuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Humidi-MiZer® System . . . . . . . . . . . . . . . . . . . . . . . 33
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
SERVICE COMPONENT TESTS . . . . . . . . . . . . . . . . 34
Control Description (Overview) . . . . . . . . . . . . . . . . 34
Auto-Component Test Control Descriptions . . . . . 34
Digital Scroll Compressor (A1)
Auto-Component Test . . . . . . . . . . . . . . . . . . . . . 35
EXV Auto-Component Test . . . . . . . . . . . . . . . . . . . 35
Refrigerant Charge Auto-Test (without Liquid
Sensors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Minimum Load Valve Auto-Component Test . . . . . 36
Supply Fan Auto-Component Test . . . . . . . . . . . . . .36
THIRD PARTY CONTROL . . . . . . . . . . . . . . . . . . . . .37
Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Remote Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
VFD Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Supply Air Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Demand Limit Control . . . . . . . . . . . . . . . . . . . . . . . .37
Economizer/Outdoor Air Damper Control . . . . . . . .37
CONTROLS OPERATION . . . . . . . . . . . . . . . . . . . . .39
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Cooling Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Heating Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Static Pressure Control . . . . . . . . . . . . . . . . . . . . . . .69
Fan Status Monitoring . . . . . . . . . . . . . . . . . . . . . . . .71
Dirty Filter Switch . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Building Pressure Control . . . . . . . . . . . . . . . . . . . .82
Smoke Control Modes . . . . . . . . . . . . . . . . . . . . . . . .84
Indoor Air Quality Control . . . . . . . . . . . . . . . . . . . . .84
Humidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Dehumidification and Reheat . . . . . . . . . . . . . . . . . . 89
Humidi-MiZer Adaptive Dehumidification System . 90
Temperature Compensated Start . . . . . . . . . . . . . . .93
Carrier Comfort Network®(CCN) . . . . . . . . . . . . . . .93
Alert Limit Configuration . . . . . . . . . . . . . . . . . . . . . .94
Sensor Trim Configuration . . . . . . . . . . . . . . . . . . . .96
Discrete Switch Logic Configuration . . . . . . . . . . . .97
Display Configuration . . . . . . . . . . . . . . . . . . . . . . . .98
VFD Configurations . . . . . . . . . . . . . . . . . . . . . . . . . .98
Remote Control Switch Input . . . . . . . . . . . . . . . . .100
Hot Gas Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Space Temperature Offset . . . . . . . . . . . . . . . . . . .100
TIME CLOCK CONFIGURATION . . . . . . . . . . . . . . .101
Hour and Minute (HH.MM) . . . . . . . . . . . . . . . . . . . .101
Month of Year (MNTH) . . . . . . . . . . . . . . . . . . . . . . .101
Day of Month (DOM) . . . . . . . . . . . . . . . . . . . . . . . .101
Day of Week (DAY) . . . . . . . . . . . . . . . . . . . . . . . . . .101
Year (YEAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Local Time Schedule (SCH.L) . . . . . . . . . . . . . . . . .101
Local Holiday Schedules (HOL.L) . . . . . . . . . . . . .101
Daylight Savings Time (DAY.S) . . . . . . . . . . . . . . .101
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . .103
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . .103
Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . .103
WeatherExpert®
48/50N2,N3,N4,N5,N6,N7,N8,N9
Packaged Rooftop Cooling Units with Gas Heat,
Optional Electric Heat, or Hydronic Heat and
ComfortLink Controls Version 10.x

2
Service Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Humidi-MiZer®Troubleshooting . . . . . . . . . . . . . . 103
Thermistor Troubleshooting . . . . . . . . . . . . . . . . . 103
Transducer Troubleshooting . . . . . . . . . . . . . . . . . 103
Forcing Inputs and Outputs . . . . . . . . . . . . . . . . . . 103
Run Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . 121
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . 134
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Factory-Installed Components . . . . . . . . . . . . . . . . 150
Accessory Control Components . . . . . . . . . . . . . . 161
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Electronic Expansion Valve (EXV) . . . . . . . . . . . . . 171
Refrigeration Circuits . . . . . . . . . . . . . . . . . . . . . . . 171
Gas System Adjustment (48N Only) . . . . . . . . . . . 184
Moisture/Liquid Indicator . . . . . . . . . . . . . . . . . . . . 184
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Liquid Line Service Valves . . . . . . . . . . . . . . . . . . . 185
Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Temperature Relief Devices . . . . . . . . . . . . . . . . . . 185
Control Circuit, 115 V . . . . . . . . . . . . . . . . . . . . . . . 185
Control Circuit, 24 V . . . . . . . . . . . . . . . . . . . . . . . . 186
Gas Heat (48N Only) . . . . . . . . . . . . . . . . . . . . . . . . 186
Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . 186
Compressor Replacement . . . . . . . . . . . . . . . . . . . 186
APPENDIX A —LOCAL DISPLAY TABLES . . . . . . 187
APPENDIX B —CCN TABLES. . . . . . . . . . . . . . . . . 206
APPENDIX C —UNIT STAGING TABLES. . . . . . . . 228
APPENDIX D —VFD INFORMATION . . . . . . . . . . . 230
APPENDIX E —MODE SELECTION PROCESS . . . 241
APPENDIX F —BACNET COMMUNICATION
OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
APPENDIX G —OPTIONAL MOTORMASTER V
CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
UNIT PRE-START-UP AND START-UP
CHECKLISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1
CONTROLS SET POINT AND
CONFIGURATION LOG . . . . . . . . . . . . . . . . . . . . CL-5
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install, re-
pair, or service air-conditioning equipment. Untrained personnel
can perform the basic maintenance functions of replacing filters.
Trained service personnel should perform all other operations.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply. Follow all safety
codes. Wear safety glasses and work gloves. Use quenching
cloth for unbrazing operations. Have fire extinguishers avail-
able for all brazing operations.
WARNING
ELECTRICAL SHOCK HAZARD
Before performing service or maintenance operation on
unit, turn off and lock off main power switch to unit. Elec-
trical shock can cause personal injury and death. Shut off
all power to this equipment during installation and service.
The unit may have an internal non-fused disconnect or a
field-installed disconnect.
CAUTION
UNIT DAMAGE HAZARD
This unit uses a microprocessor-based electronic control
system. Do not use jumpers or other tools to short out com-
ponents or to bypass or otherwise depart from recommend-
ed procedures. Any short-to-ground of the control board or
accompanying wiring may destroy the electronic modules
or electrical components.
WARNING
1. Improper installation, adjustment, alteration, service, or
maintenance can cause property damage, personal injury,
or loss of life. Refer to the User’s Information Manual
provided with this unit for more details.
2. Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
DANGER
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and gog-
gles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from system
using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen and
the work area should be well ventilated. Refrigerant in
contact with an open flame produces toxic gases.
d. Cut component connection tubing with tubing cutter and
remove component from unit. Use a pan to catch any oil
that may come out of the lines and as a gage for how
much oil to add to the system.
e. Carefully un-sweat remaining tubing stubs when neces-
sary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
CAUTION
DO NOT re-use compressor oil or any oil that has been ex-
posed to the atmosphere. Dispose of oil per local codes and
regulations. DO NOT leave refrigerant system open to air
any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with dry
nitrogen to prevent oil contamination when timely repairs
cannot be completed. Failure to follow these procedures
may result in damage to equipment.

3
GENERAL
This book contains Start-Up, Controls, Operation, Trouble-
shooting, and Service information for the 48/50N Series roof-
top units. See Table 1. These units are equipped with Com-
fortLink controls version 10.0 or higher. Use this guide in con-
junction with the separate installation instructions packaged
with the unit.
The 48/50N Series units provide ventilation, cooling, and heat-
ing (when equipped) in variable air volume (VAV), staged air
volume (SAV™), and constant volume (CV) applications.
Table 1 — N Series Product Line
LEGEND
The 48/50N units contain the factory-installed ComfortLink con-
trol system which provides full system management. The main
base board (MBB) stores hundreds of unit configuration settings
and 8 time-of-day schedules. The MBB also performs self-diag-
nostic tests at unit start-up, monitors the operation of the unit, and
provides alarms and alert information. The system also contains
other optional boards that are connected to the MBB through the
Local Equipment Network (LEN). Information on system opera-
tion and status are sent to the MBB processor by various sensors
and optional board(s) that are located at the unit and in the condi-
tioned space. Access to the unit controls for configuration, set
point selection, schedule creation, and service can be done via lo-
cal display using the supplied Navigator™ device or through the
Carrier Comfort Network® (CCN) using ComfortVIEW™ soft-
ware, Network Service Tool, or other CCN device.
The ComfortLink system controls all aspects of the rooftop. It
controls the supply-fan motor, compressors, and economizer to
maintain the proper temperature conditions. The controls also
cycle condenser fans to maintain suitable head pressure. All
units are equipped with a supply fan VFD (variable frequency
drive). The VAV units utilize the VFD for supply duct pressure
control. The ComfortLink controls can directly control the
speed of the VFD based on a static pressure sensor input. In ad-
dition, the ComfortLink controls can adjust the building pres-
sure using an optional VFD controlled power exhaust or return
fan controlled from a building pressure sensor. The control
safeties are continuously monitored to prevent the unit from
operating under abnormal conditions. Sensors include pressure
transducers and thermistors. For units on CV applications, the
ComfortLink controls will direct the VFD to drive the supply
fan at low speed for low cool or heat demand and high speed
on high cool or heat demand.
A scheduling function, programmed by the user, controls the
unit occupied/unoccupied schedule. Up to 8 different schedules
can be programmed.
The controls also allow the service person to operate a service
test so that all the controlled components can be checked for
proper operation.
WARNING
If the information in this manual is not followed exactly, a
fire or explosion may result causing property damage, per-
sonal injury or loss of life.
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
WHAT 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.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
AVERTISSEMENT
RISQUE D´INCENDIE OU D´EXPLOSION
Si les consignes de sécurité ne sont pas suivies à la lettre,
cela peut entraîner la mort, de graves blessures ou des dom-
mages matériels.
Ne pas entreposer ni utiliser d´essence ni autres vapeurs ou
liquides inflammables à proximité de cet appareil ou de tout
autre appareil.
QUE FAIRE SI UNE ODEUR DE GAZ EST DÉTECTÉE
• Ne mettre en marche aucun appareil.
• Ne toucher aucun interrupteur électrique; ne pas
utiliser de téléphone dans le bâtiment.
• Quitter le bâtiment immédiatement.
• Appeler immédiatement le fournisseur de gaz en
utilisant le téléphone d´un voisin. Suivre les
instructions du fournisseur de gaz.
• Si le fournisseur de gaz n´est pas accessible, appeler le
service d´incendie.
L´installation et l´entretien doivent être effectués par un in-
stallateur ou une entreprise d´entretien qualifié, ou le four-
nisseur de gaz.
UNIT SIZE APPLICATION
48N2 All Vertical Supply/Return, CV/SAV ComfortLink Controls
48N3 All Vertical Supply/Return, VAV ComfortLink Controls
48N4 All Horizontal Supply/Return, CV/SAV ComfortLink
Controls
48N5 All Horizontal Supply/Return, VAV ComfortLink Controls
48N6 All Vertical Supply/Horizontal Return, CV/SAV
ComfortLink Controls
48N7 All Vertical Supply/Horizontal Return, VAV
ComfortLink Controls
48N8 All Horizontal Supply/Vertical Return, CV/SAV
ComfortLink Controls
48N9 All Horizontal Supply/Vertical Return, VAV
ComfortLink Controls
50N2 All Vertical Supply/Return, CV/SAV ComfortLink Controls
50N3 All Vertical Supply/Return, VAV ComfortLink Controls
50N4 All Horizontal Supply/Return, CV/SAV ComfortLink
Controls
50N5 All Horizontal Supply/Return, VAV ComfortLink Controls
50N6 All Vertical Supply/Horizontal Return, CV/SAV
ComfortLink Controls
50N7 All Vertical Supply/Horizontal Return, VAV
ComfortLink Controls
50N8 All Horizontal Supply/Vertical Return, CV/SAV
ComfortLink Controls
50N9 All Horizontal Supply/Vertical Return, VAV
ComfortLink Controls
CV —Constant Volume
SAV —Staged Air Volume
VAV —Variable Air Volume

4
Conventions Used in This Manual
This manual will use the following conventions for discussing
configuration points for the local display (Navigator™).
Parameter names will be written with the Mode name first,
then any sub-modes, then the parameter name, each separated
by an arrow symbol (). Names will also be shown in bold
and italics. As an example, the IAQ Economizer Override Po-
sition which is located in the Configuration mode, Indoor Air
Quality Configuration sub-mode, and the Air Quality Set
Points sub-sub-mode, would be written as Configuration

IAQ  IAQ.SP  IQ.O.P.
This path name will show the user how to navigate through the
local display structure to reach the desired configuration. The
user would scroll through the modes and sub-modes using the
UP ARROW and DOWN ARROW keys. The arrow symbol in
the path name represents pressing ENTER to move into the
next level of the menu structure.
When a value is included as part of the path name, it will be shown
at the end of the path name after an equals sign. If the value rep-
resents a configuration setting, an explanation will be shown in pa-
rentheses after the value. As an example, Configuration

IAQ  AQ.CF  IQ.AC = 1 (IAQ Analog Input).
Pressing the ESCAPE and ENTER keys simultaneously will
display an expanded text description of the parameter name.
The expanded description is shown in the local display tables
but will not be shown with the path names in text.
The CCN (Carrier Comfort Network®) point names are also
cross-referenced in the local display tables (Appendix A) for
user interface with the unit via CCN instead of the local display.
The CCN tables are located in Appendix B of this manual.
BASIC CONTROL USAGE
ComfortLink Controls
The ComfortLink controls are a comprehensive unit-manage-
ment system. The control system is easy to access, configure,
diagnose, and troubleshoot.
The controls are flexible, providing constant volume and vari-
able air volume cooling control sequences, and heating control
sequences for 2-stage electric and gas systems, modulating gas
heating, SCR (silicon control rectifier) electric heat, and hy-
dronic heat in both Occupied and Unoccupied schedule modes.
This control also manages:
• VAV duct pressure (VAV units only) with configurable
static pressure reset
• Building pressure through 4 different power exhaust
schemes
• Return fan applications using fan tracking
• Condenser fan head pressure control
• Dehumidification (with optional reheat) and humidifier se-
quences
• Space ventilation control, in Occupied and Unoccupied pe-
riods, using CO2 sensors or external signals, with ventila-
tion defined by damper position or ventilation airflow
measurement
• Smoke control functions
• Occupancy schedules
• Occupancy or start/stop sequences based on third-party
signals
• Alarm status and history and run time data
• Management of a complete unit service test sequence
• Economizer operation and Fault Diagnosis and Detection
(FDD) per California Energy Commission Title 24-2013.
System diagnostics are enhanced by the use of sensors for air
and refrigerant temperatures and pressures. Unit-mounted actu-
ators provide digital feedback data to the unit control.
The ComfortLink controller is cable-ready for connection to
the Carrier Comfort Network® (CCN) building management
system. The control provides high-speed communications for
remote monitoring. Multiple 48/50N Series units can be linked
together (and to other ComfortLink controller equipped units)
using a 3-wire communication bus. The unit may be equipped
with optional BACnet communication capability.
The ComfortLink controller is also capable of communicating
with a BACnet network by going through a UPC Open control-
ler. This permits third-party building management systems to
provide remote monitoring and control of 48/50N units. See
Appendix F for additional information.
The ComfortLink control system is easy to access through the
use of a Navigator™ display. A computer is not needed to per-
form unit start-up. The Navigator module provides detailed ex-
planations of control information.
For service flexibility, a factory-supplied Navigator™ module
has an extended communication cable that can be plugged into
the unit’s communication network either at the main control
box or at the opposite end of the unit, at a remote modular plug.
The Navigator display provides the menu structure, control ac-
cess and display data for the unit.
Navigator™ Display
The hand-held Navigator display is used with the 48/50N Se-
ries units. See Fig. 1. The Navigator display is plugged into the
RJ-14 jack in the main control box on the COMM board. The
Navigator display can also be plugged into the RJ-14 jack lo-
cated on the unit corner post located at the economizer end of
the unit.
Fig. 1 — Accessory Navigator Display
Operation
All units are shipped from the factory with the Navigator dis-
play, which is located in the main control box. See Fig. 1. The
Navigator display provides the user with an interface to the
ComfortLink control system. The display has arrow keys, an
ESC key, and an ENTER key. These keys are used to navigate
through the different levels of the display structure. The Navi-
gator has 4 lines of display. See Table 2 for the menu structure.
The 4 keys are used to navigate through the display structure,
which is organized in a tiered mode structure. See Table 2 for the
first 2 levels of the mode structure. If the buttons have not been
used for a period, the display will default to the AUTO VIEW
display category as shown under the RUN STATUS category. To
Run Status
Service Test
Temperatures
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
ENTER
ESC
MODE
Alarm Statu s
TIME
EWT
LWT
SETP
12.58
54. 6 F
44.1 F
44.0 F
N A V IGAT O R
Co m for t Link

5
show the top-level display, press the ESC key until a blank dis-
play is shown. Then use the and keys to scroll through
the top level categories.These are listed in Appendix A and will
be indicated on the Navigator by the LED next to each mode list-
ed on the face of the display.
When a specific mode or sub-mode is located, push the
ENTER key to enter the mode. Depending on the mode, there
may be additional tiers. Continue to use and keys and
the ENTER key until the desired display item is found. At any
time, the user can move back a mode level by pressing the ESC
key.
Items in the Configuration and Service Test modes are pass-
word protected. The display will prompt for a PASSWORD.
Use the ENTER and arrow keys to enter the 4 digits of the
password. The default password is 1111.
Pressing the ESC and ENTER keys simultaneously will dis-
play an expanded text description for each display point.
Changing item values or testing outputs is accomplished in the
same manner. Locate and display the desired item. If the dis-
play is in rotating auto-view, press the ENTER key to stop the
display at the desired item. Press the ENTER key again so that
the item value flashes. Use the arrow keys to change the value
or state of an item and press the ENTER key to accept it. Press
the ESC key and the item, value, or units display will resume.
Repeat the process as required for other items.
If the user needs to force a variable, follow the same process as
when editing a configuration parameter. When using the Navi-
gator display, a forced variable will be displayed with a blink-
ing “f” following its value. For example, if supply fan request-
ed (FAN.F) is forced, the display shows “YESf”, where the “f”
is blinking to signify a force on the point. Remove the force by
selecting the point that is forced with the ENTER key and then
pressing both arrow keys simultaneously.
Depending on the unit model, factory-installed options, and
field-installed accessories, some of the items in the various
mode categories may not apply.
System Pilot™ Interface
The System Pilot interface (33PILOT-01) is a component of
the Carrier 3V™ system and can serve as a CCN user-interface
and configuration tool.
Additionally, the System Pilot interface can serve as a wall-
mounted temperature sensor for space temperature measure-
ment. The occupant can use the System Pilot interface to
change set points. A security feature is provided to limit access
of features for unauthorized users. See Fig. 2 for System Pilot
interface details.
CCN Tables and Display
In addition to the Navigator display, the user can also access
the same information through the CCN tables by using the Sys-
tem Pilot, Service Tool, or other CCN programs. Details on the
CCN tables are summarized in Appendix B. The point names
displayed in the CCN tables and the corresponding local dis-
play acronyms available via the Navigator display may be dif-
ferent and more items are displayed in the CCN tables. As a
reference, the CCN point names are included in the local dis-
play menus shown in Appendix A.
GENERIC STATUS DISPLAY TABLE
The GENERIC points table allows the service/installer the ability
to create a custom table in which up to 20 points from the 5 CCN
categories (Status, Config/Service-Config, Set Point, Mainte-
nance, and Occupancy) may be collected and displayed.
In the Service-Config table section, there is a table named “ge-
nerics.” This table contains placeholders for up to 20 CCN
point names and allows the user to decide which points are dis-
played in the GENERIC points table. Each one of these place-
holders allows the input of an 8-character ASCII string.
Using a CCN method of interface, go into the Edit mode for
the Service-Config table “generics” and enter the CCN name
for each point to be displayed in the custom points table in the
order they will be displayed. When done entering point names,
download the table to the rooftop unit control.
Fig. 2 — System Pilot User Interface
IMPORTANT: The computer system software (Comfort-
VIEW™, Service Tool, etc.) that is used to interact with
CCN controls always saves a template of items it considers
as static (e.g., limits, units, forcibility, 24-character text
strings, and point names) after the software uploads the ta-
bles from a control. Thereafter, the software is only con-
cerned with run time data like value and hardware/force sta-
tus. With this in mind, it is important that anytime a change
is made to the Service-Config table “generics” (which in
turn changes the points contained in the GENERIC point ta-
ble), a complete new upload is performed. This requires
that any previous table database be completely removed
first. Failure to do this will not allow the user to display the
new points that have been created and the software will
have a different table database than the unit control.
SCROLL +
-
NAVIGATE/
EXIT
MODIFY/
SELECT
PA G E

6
Table 2 — Navigator Menu Display Structure
RUN
STATUS
SERVICE
TEST TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION TIME CLOCK
OPERATING
MODES ALARMS
Auto View of
Run Status
(VIEW)
Econ
Run Status
(ECON)
Cooling
Information
(COOL)
VFD
Information
(VFDS)
Mode
Trip Helper
(TRIP)
Ctl Temp
RAT,SAT,
or ZONE
(TEMP)
CCN
Linkage
(LINK)
Compressor
Run Hours
(HRS)
Compressor
Starts
(STRT)
Software
Version
Numbers
(VERS)
Service Test Mode
(TEST)
Local Machine
Disable
(STOP)
Soft Stop
Request
(S.STP)
Supply Fan
Request
(FAN.F)
Test Independent
Outputs
(INDP)
Test Fans
(FANS)
Calibrate Test
Actuators
(ACT.C)
Test
Humidimizer
(HMZR)
Test Circuit
EXVS
(EXVS)
Test Cooling
(COOL)
Test Heating
(HEAT)
Auto Component
Diag. Test
(AC.DT)
Air
Temperatures
(AIR.T)
Refrigerant
Temperatures
(REF.T)
Air Pressures
(AIR.P)
Refrigerant
Pressures
(REF.P)
Occupied Heat
Setpoint
(OHSP)
Occupied Cool
Setpoint
(OCSP)
Unoccupied
Heat Setpoint
(UHSP)
Unoccupied
Cool Setpoint
(UCSP)
Heat - Cool
Setpoint
(GAP)
VAV Occ
Cool On
(V.C.ON)
VAV Occ
Cool Off
(V.C.OF)
Supply Air
Setpoint
(SASP)
Supply Air
Setpoint Hi
(SA.HI)
Supply Air
Setpoint Lo
(SA.LO)
Heating Supply
Air Setpoint
(SA.HT)
Tempering
Purge SASP
(T.PRG)
Tempering in
Cool SASP
(T.CL)
Tempering in
Vent Occ SASP
(T.V.OC)
Tempering in
Vent Unocc.
SASP
(T.V.UN)
General Inputs
(GEN.I)
Compressor
Feedback
(FD.BK)
Thermostat
Inputs
(STAT)
Fire-Smoke
Modes
(FIRE)
Relative
Humidity
(REL.H)
Air Quality
Sensors
(AIR.Q)
CFM Sensors
(CFM)
Reset Inputs
(RSET)
4-20 Milliamp
Inputs
(4-20)
Fans
(FANS)
Cooling
(COOL)
Heating
(HEAT)
Actuators
(ACTU)
General
Outputs
(GEN.O)
Unit Configuration
(UNIT)
Cooling Configuration
(COOL)
Evap/Discharge
Temp. Reset
(EDT.R)
Heating Configuration
(HEAT)
Supply Static Press.
Config.
(SP)
Economizer
Configuration
(ECON)
Building Press. Configs
(BP)
Cool/Heat Setpoint
Offsets
(D.LV.T)
Demand Limit Config.
(DMD.L)
Indoor Air
Quality Config.
(IAQ)
Humidity Configuration
(HUMD)
Dehumidification
Config.
(DEHU)
CCN Configuration
(CCN)
Alert Limit Config.
(ALLM)
Sensor Trim Config.
(TRIM)
Switch Logic: NO/NC
(SW.LG)
Display Configuration
(DISP)
Supply Fan FVD
Config.
(S.VFD)
Exhaust Fan FVD
Config.
(E.VFD)
Filter Configuration
(FLTC)
Prognostics Config.
(PROG)
Evap Cond
Configuration
(EVP.C)
Time of Day
(TIME)
Month, Date,
Day and Year
(DATE)
Local Time
Schedule
(SCH.L)
Local
Holiday
Schedules
(HOL.L)
Daylight
Savings
Time
(DAY.S)
System
Mode
(SYS.M)
HVAC Mode
(HVAC)
Control Type
(CTRL)
Mode
Controlling
Unit
(MODE)
Currently
Active
Alarms
(CURR)
Reset All
Current
Alarms
(R.CUR)
Alarm
History
(HIST)













































































7
START-UP
Unit Preparation
Check that unit has been installed in accordance with the in-
stallation instructions and applicable codes. Make sure that the
economizer hoods have been installed and that the outdoor fil-
ters are properly installed.
Internal Wiring
Ensure that all electrical connections in the control box are
tightened as required. If the unit has modulating gas or SCR
electric heat, make sure that the LAT (leaving air temperature)
sensors have been routed to the supply ducts as required.
Accessory Installation
Check to make sure that all accessories, including space ther-
mostats and sensors, have been installed and wired as required
by the instructions and unit wiring diagrams.
Crankcase Heaters
Crankcase heaters are energized as long as there is power to the
unit, except when the compressors are running.
Evaporator Fan
Fan belts and fixed pulleys are factory-installed. See Tables 3-
22 for fan performance. Be sure that fans rotate in the proper
direction. Component pressure drop data is shown in Tables 19
and 20. See Tables 21 and 22 for motor limitations.
FIELD-SUPPLIED FAN DRIVES
Supply fan and power exhaust fan drives are fixed-pitch, non-
adjustable selections for maximum reliability and long belt
life. If the factory drive sets must be changed to obtain other
fan speeds, consult the nearest Browning Manufacturing Co.
sales office with the required new wheel speed and the data
from Physical Data and Supply Fan Drive Data tables (center
distances, motor and fan shaft diameters, motor horsepower) in
Installation Instructions for a modified drive set selection. For
minor speed changes, the VFD can be used to provide speed
control. See page 169 for belt installation procedure.
Controls
Use the following steps for the controls:
1. Set any control configurations that are required (field-
installed accessories, etc.). The unit is factory configured
for all appropriate factory-installed options.
2. Enter unit set points. The unit is shipped with the set point
default values. If a different set point is required, use the
Navigator™ display or CCN interface to change the con-
figuration values.
3. If the internal time schedules are going to be used, config-
ure the Occupancy schedule.
4. Verify that the control time periods programmed meet cur-
rent requirements.
5. Use Auto Commisioning mode to verify operation of all
major components.
6. If the unit is a VAV unit, make sure to configure the static
pressure set point. To check out the VFD, use the VFD
instructions shipped with the unit.
Gas Heat
Verify gas pressure before turning on gas heat as follows:
1. Turn off field-supplied manual gas stop, located external
to the unit.
2. Connect pressure gages to supply gas tap, located at field-
supplied manual shutoff valves.
3. Connect pressure gages to manifold pressure tap on unit
gas valve.
4. Supply gas pressure must not exceed 13.5 in. wg. Check
pressure at field-supplied shut-off valve.
5. Turn on manual gas stop and initiate a heating demand.
Jumper R to W1 and R to W2 in the control box to initiate
high fire heat.
6. After the unit has run with high fire energized for several
minutes, verify that incoming pressure is 5.0 in. wg or
greater and that the manifold pressure is 3.1 in. wg. If
manifold pressure must be adjusted, refer to Gas Valve
Adjustment section on page 184.
7. Use the Service Test procedure to verify all heat stages of
operation.
IMPORTANT: Do not attempt to start unit, even momentar-
ily, until all items on the Start-Up Checklist (at the back of
this book) and the following steps have been completed.
IMPORTANT: The unit is shipped with the unit control dis-
abled. To enable the control, set Local Machine Disable
(Service Test
 STOP) to No.
IMPORTANT: Unit power must be on for 24 hours prior to
start-up of compressors. Otherwise, damage to compressors
may result.
IMPORTANT: The unit is shipped with the unit control dis-
abled. To enable the control, set Local Machine Disable
(Service Test
 STOP) to No.

8
Table 3 — Fan Performance — 48/50N 75-90 Nominal Ton Units Standard Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 734 3.74 764 4.22 794 4.71 823 5.22 851 5.73
18,000 846 5.75 873 6.30 898 6.87 924 7.45 948 8.04
20,000 923 7.45 947 8.06 971 8.68 994 9.31 1017 9.95
22,000 1001 9.48 1023 10.14 1045 10.82 1066 11.50 1088 12.20
24,000 1080 11.87 1100 12.59 1120 13.32 1140 14.05 1160 14.80
26,000 1159 14.65 1178 15.43 1197 16.21 1215 17.00 1234 17.80
28,000 1238 17.86 1256 18.69 1274 19.52 1291 20.37 1308 21.22
30,000 1318 21.52 1335 22.41 1352 23.30 1368 24.20 1384 25.10
32,000 1399 25.68 1414 26.61 1430 27.56 1446 28.51 1461 29.47
34,000 1479 30.35 1494 31.33 1509 32.34 1524 33.34 1538 34.36
36,000 1560 35.56 1574 36.61 1588 37.66 1602 38.72 1616 39.78
38,000 1641 41.36 1655 42.46 1668 43.57 1681 44.68 1694 45.80
40,000 1722 47.77 1735 48.92 1748 50.09 1760 51.25 1773 52.43
42,000 ——————————
45,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 878 6.25 905 6.79 931 7.33 957 7.88 982 8.44
18,000 973 8.64 996 9.25 1020 9.87 1043 10.50 1065 11.13
20,000 1039 10.61 1061 11.26 1083 11.94 1104 12.61 1125 13.29
22,000 1108 12.90 1129 13.61 1149 14.33 1169 15.06 1189 15.79
24,000 1179 15.56 1199 16.32 1218 17.09 1236 17.87 1255 18.66
26,000 1252 18.61 1270 19.42 1288 20.24 1305 21.08 1323 21.91
28,000 1326 22.09 1343 22.95 1359 23.83 1376 24.71 1392 25.60
30,000 1400 26.02 1416 26.94 1432 27.86 1448 28.79 1464 29.73
32,000 1476 30.44 1491 31.41 1506 32.39 1521 33.37 1536 34.37
34,000 1553 35.37 1567 36.39 1581 37.43 1595 38.47 1609 39.51
36,000 1630 40.86 1643 41.94 1657 43.03 1670 44.11 1684 45.21
38,000 1707 46.93 1720 48.06 1733 49.20 1746 50.35 1759 51.49
40,000 1785 53.61 1798 54.80 — — — — — —
42,000 ——————————
45,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 1006 9.01 1030 9.58 1054 10.16 1077 10.75 1100 11.34
18,000 1087 11.77 1109 12.42 1131 13.08 1152 13.74 1173 14.41
20,000 1146 13.99 1167 14.69 1187 15.39 1207 16.11 1227 16.83
22,000 1209 16.54 1228 17.29 1247 18.05 1266 18.81 1284 19.58
24,000 1273 19.45 1291 20.25 1309 21.06 1327 21.87 1345 22.69
26,000 1340 22.76 1357 23.61 1374 24.47 1391 25.33 1408 26.20
28,000 1409 26.49 1425 27.39 1441 28.30 1457 29.22 1473 30.14
30,000 1479 30.68 1494 31.64 1510 32.60 1525 33.56 1540 34.54
32,000 1551 35.37 1565 36.37 1580 37.39 1594 38.40 1608 39.43
34,000 1623 40.57 1637 41.63 1651 42.69 1665 43.76 1678 44.83
36,000 1697 46.32 1710 47.43 1723 48.55 1737 49.67 1750 50.79
38,000 1772 52.66 1784 53.81 1797 54.98 — — — —
40,000 ——————————
42,000 ——————————
45,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 1122 11.94 1145 12.55 1166 13.16 1188 13.78 1209 14.40
18,000 1193 15.09 1214 15.77 1234 16.46 1253 17.16 1273 17.86
20,000 1246 17.55 1265 18.29 1284 19.03 1303 19.77 1322 20.53
22,000 1303 20.36 1321 21.14 1339 21.93 1357 22.72 1374 23.52
24,000 1362 23.52 1379 24.35 1396 25.19 1413 26.04 1430 26.89
26,000 1424 27.08 1440 27.96 1457 28.86 1473 29.75 1489 30.65
28,000 1488 31.07 1504 32.01 1519 32.94 1535 33.89 1550 34.84
30,000 1555 35.52 1570 36.50 1584 37.50 1599 38.49 1613 39.49
32,000 1623 40.46 1637 41.49 1651 42.53 1665 43.58 1679 44.64
34,000 1692 45.92 1705 47.01 1719 48.09 1732 49.20 1745 50.30
36,000 1762 51.92 1775 53.06 1788 54.21 — — — —
38,000 ——————————
40,000 ——————————
42,000 ——————————
45,000 ——————————

9
Table 4 — Fan Performance — 48/50N 75-90 Nominal Ton Units High-Static Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 315 2.56 354 3.34 390 4.19 425 5.09 459 6.04
18,000 364 3.68 397 4.50 428 5.38 459 6.30 489 7.27
20,000 397 4.59 427 5.45 456 6.34 484 7.29 512 8.26
22,000 431 5.64 458 6.53 485 7.45 511 8.41 537 9.40
24,000 465 6.85 490 7.76 515 8.70 539 9.68 563 10.70
26,000 499 8.20 523 9.14 546 10.12 569 11.12 591 12.15
28,000 534 9.72 556 10.69 578 11.68 599 12.71 620 13.76
30,000 569 11.40 590 12.40 610 13.42 630 14.47 650 15.54
32,000 605 13.26 624 14.29 643 15.33 662 16.40 681 17.50
34,000 640 15.30 658 16.35 676 17.42 694 18.52 712 19.63
36,000 676 17.51 693 18.59 710 19.69 727 20.81 744 21.95
38,000 711 19.92 728 21.03 744 22.15 760 23.29 776 24.46
40,000 747 22.53 763 23.66 778 24.80 793 25.97 809 27.15
42,000 783 25.33 798 26.49 812 27.66 827 28.85 842 30.06
45,000 837 29.92 851 31.12 864 32.33 878 33.55 892 34.79
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 491 7.05 522 8.09 552 9.18 580 10.30 608 11.47
18,000 517 8.27 545 9.32 572 10.40 598 11.52 624 12.66
20,000 538 9.28 564 10.33 590 11.41 614 12.53 638 13.67
22,000 562 10.43 586 11.49 610 12.58 633 13.70 656 14.86
24,000 587 11.74 609 12.82 632 13.91 654 15.04 675 16.20
26,000 613 13.21 635 14.30 656 15.41 676 16.55 697 17.71
28,000 641 14.84 661 15.94 681 17.07 701 18.22 720 19.39
30,000 670 16.64 689 17.76 708 18.90 726 20.07 745 21.25
32,000 699 18.62 717 19.75 735 20.92 753 22.09 770 23.29
34,000 729 20.77 747 21.92 764 23.10 781 24.30 797 25.51
36,000 760 23.11 777 24.29 793 25.48 809 26.69 825 27.92
38,000 792 25.63 808 26.83 823 28.04 838 29.27 854 30.52
40,000 824 28.36 839 29.57 854 30.80 868 32.05 883 33.31
42,000 856 31.28 870 32.51 885 33.76 899 35.03 913 36.31
45,000 905 36.04 919 37.31 932 38.58 945 39.88 959 41.18
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 636 12.66 662 13.90 688 15.16 713 16.46 738 17.78
18,000 649 13.85 674 15.06 697 16.30 721 17.57 744 18.87
20,000 662 14.86 685 16.06 708 17.29 730 18.55 752 19.84
22,000 678 16.03 700 17.24 722 18.47 743 19.72 764 21.00
24,000 697 17.38 717 18.58 738 19.82 758 21.07 778 22.34
26,000 717 18.90 737 20.11 756 21.34 776 22.60 795 23.87
28,000 739 20.59 758 21.81 777 23.05 795 24.31 813 25.58
30,000 763 22.46 781 23.69 799 24.93 816 26.20 833 27.48
32,000 788 24.51 805 25.75 822 27.00 839 28.28 855 29.57
34,000 814 26.74 830 27.99 846 29.26 863 30.55 878 31.84
36,000 841 29.17 857 30.43 872 31.71 887 33.00 903 34.32
38,000 869 31.78 884 33.06 899 34.35 913 35.66 928 36.98
40,000 897 34.59 912 35.88 926 37.18 940 38.51 954 39.85
42,000 927 37.60 941 38.91 954 40.24 968 41.57 981 42.92
45,000 972 42.51 985 43.84 998 45.17 1011 46.54 1023 47.91
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 762 19.13 785 20.51 808 21.91 831 23.34 853 24.80
18,000 766 20.19 788 21.54 810 22.91 831 24.31 852 25.73
20,000 774 21.15 795 22.49 816 23.84 836 25.22 856 26.62
22,000 784 22.30 805 23.62 825 24.97 844 26.34 864 27.73
24,000 798 23.64 817 24.96 836 26.30 855 27.67 874 29.04
26,000 813 25.17 832 26.49 850 27.82 868 29.18 886 30.56
28,000 831 26.89 849 28.21 866 29.54 884 30.90 901 32.27
30,000 851 28.79 868 30.11 884 31.45 901 32.81 917 34.18
32,000 872 30.88 888 32.21 904 33.55 920 34.91 936 36.29
34,000 894 33.17 910 34.50 925 35.85 941 37.22 956 38.59
36,000 918 35.65 933 36.98 948 38.34 962 39.71 977 41.10
38,000 943 38.32 957 39.67 971 41.04 985 42.42 1000 43.82
40,000 968 41.20 982 42.56 996 43.94 1010 45.33 1023 46.73
42,000 995 44.27 1008 45.66 1021 47.04 1035 48.44 1048 49.86
45,000 1036 49.29 1049 50.68 1061 52.09 1074 53.51 1086 54.94

10
Table 5 — Fan Performance — 48/50N 105 Nominal Ton Units Standard Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 974 8.74 996 9.38 1019 10.03 1041 10.70 1063 11.37
25,000 1132 13.69 1151 14.44 1171 15.20 1190 15.97 1209 16.75
27,000 1213 16.82 1231 17.62 1249 18.44 1267 19.26 1284 20.09
29,000 1294 20.43 1312 21.30 1328 22.17 1345 23.05 1362 23.93
31,000 1377 24.60 1393 25.51 1409 26.44 1425 27.37 1441 28.31
33,000 1461 29.35 1476 30.33 1491 31.31 1506 32.30 1521 33.29
35,000 1546 34.75 1560 35.78 1575 36.82 1589 37.87 1603 38.92
37,000 1632 40.86 1645 41.94 1659 43.04 1672 44.14 1686 45.25
39,000 1719 47.72 1732 48.87 1744 50.03 1757 51.19 1770 52.35
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 1084 12.05 1105 12.74 1126 13.44 1147 14.14 1167 14.86
25,000 1227 17.54 1246 18.33 1264 19.13 1282 19.94 1300 20.76
27,000 1302 20.93 1319 21.78 1336 22.63 1353 23.50 1370 24.37
29,000 1378 24.82 1395 25.73 1411 26.63 1427 27.55 1443 28.47
31,000 1456 29.26 1472 30.22 1487 31.18 1502 32.14 1517 33.12
33,000 1536 34.29 1550 35.30 1565 36.32 1579 37.34 1593 38.37
35,000 1617 39.98 1630 41.04 1644 42.12 1658 43.19 1671 44.27
37,000 1699 46.36 1712 47.49 1725 48.61 1738 49.74 1751 50.88
39,000 1782 53.52 1795 54.70 — — — — — —
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 1187 15.58 1207 16.31 1226 17.04 1245 17.78 1264 18.53
25,000 1318 21.58 1335 22.41 1353 23.25 1370 24.09 1387 24.94
27,000 1387 25.24 1404 26.12 1420 27.01 1436 27.90 1452 28.81
29,000 1459 29.40 1474 30.33 1490 31.27 1505 32.22 1520 33.17
31,000 1532 34.10 1547 35.09 1562 36.08 1576 37.08 1591 38.09
33,000 1608 39.40 1622 40.44 1636 41.49 1650 42.54 1663 43.61
35,000 1685 45.36 1698 46.46 1712 47.55 1725 48.66 1738 49.78
37,000 1764 52.03 1777 53.18 1789 54.33 — — — —
39,000 ——————————
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 1283 19.29 1302 20.05 1320 20.82 1338 21.59 1356 22.37
25,000 1404 25.80 1420 26.67 1437 27.53 1453 28.41 1470 29.29
27,000 1468 29.71 1484 30.63 1500 31.55 1515 32.47 1531 33.41
29,000 1536 34.13 1551 35.10 1566 36.07 1580 37.05 1595 38.03
31,000 1605 39.10 1620 40.11 1634 41.14 1648 42.16 1662 43.20
33,000 1677 44.67 1691 45.74 1704 46.81 1718 47.89 1731 48.98
35,000 1751 50.89 1764 52.01 1777 53.14 1790 54.28 — —
37,000 ——————————
39,000 ——————————
41,000 ——————————
42,000 ——————————
44,000 ——————————
46,000 ——————————
48,000 ——————————
52,500 ——————————

11
Table 6 — Fan Performance — 48/50N 105 Nominal Ton Units High-Static Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 441 4.97 466 5.77 491 6.61 516 7.49 540 8.41
25,000 497 6.95 519 7.83 541 8.75 563 9.69 584 10.67
27,000 534 8.54 555 9.47 576 10.43 596 11.42 616 12.44
29,000 572 10.35 592 11.33 611 12.34 630 13.38 649 14.44
31,000 610 12.41 629 13.44 647 14.50 664 15.58 682 16.69
33,000 649 14.72 666 15.80 683 16.91 699 18.03 716 19.18
35,000 687 17.30 703 18.43 719 19.58 735 20.75 751 21.95
37,000 726 20.16 741 21.34 756 22.53 771 23.75 786 25.00
39,000 764 23.31 779 24.54 793 25.79 807 27.06 822 28.34
41,000 803 26.78 817 28.05 831 29.35 844 30.65 858 31.99
42,000 842 30.56 855 31.89 868 33.22 881 34.59 894 35.96
44,000 881 34.68 893 36.06 906 37.44 918 38.84 930 40.26
46,000 920 39.14 932 40.56 944 41.99 956 43.45 967 44.91
48,000 959 43.97 970 45.43 982 46.91 993 48.41 1004 49.92
52,500 1047 56.20 1057 57.78 1068 59.35 1078 60.95 1088 62.57
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 563 9.35 587 10.33 609 11.34 632 12.38 654 13.44
25,000 606 11.67 627 12.71 647 13.77 667 14.86 688 15.97
27,000 636 13.49 655 14.56 675 15.66 694 16.78 713 17.93
29,000 667 15.53 685 16.64 704 17.78 722 18.94 739 20.12
31,000 699 17.81 717 18.97 734 20.15 751 21.34 768 22.57
33,000 732 20.35 749 21.55 765 22.77 781 24.01 797 25.27
35,000 766 23.16 782 24.41 797 25.66 812 26.94 827 28.24
37,000 801 26.25 815 27.54 830 28.84 844 30.16 859 31.49
39,000 836 29.65 850 30.97 863 32.31 877 33.67 891 35.05
41,000 871 33.34 884 34.71 897 36.09 911 37.49 924 38.91
42,000 907 37.35 919 38.76 932 40.19 945 41.64 957 43.09
44,000 943 41.70 955 43.15 967 44.62 979 46.11 991 47.61
46,000 979 46.40 991 47.89 1002 49.41 1014 50.92 1025 52.48
48,000 1016 51.44 1027 52.99 1038 54.54 1049 56.12 1060 57.69
52,500 1099 64.19 1109 65.82 1119 67.48 1129 69.14 1140 70.82
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 676 14.53 697 15.65 719 16.79 739 17.96 760 19.16
25,000 707 17.11 727 18.27 746 19.46 765 20.67 784 21.90
27,000 731 19.11 750 20.30 768 21.52 786 22.76 804 24.02
29,000 757 21.34 774 22.56 792 23.82 809 25.09 826 26.38
31,000 784 23.81 801 25.07 817 26.36 833 27.66 849 29.00
33,000 813 26.55 828 27.85 844 29.17 859 30.51 875 31.87
35,000 842 29.56 857 30.90 872 32.26 887 33.63 901 35.02
37,000 873 32.85 887 34.22 901 35.62 915 37.03 929 38.46
39,000 905 36.44 918 37.86 932 39.28 945 40.73 958 42.21
41,000 937 40.34 950 41.80 963 43.27 975 44.75 988 46.26
42,000 970 44.57 982 46.06 994 47.56 1007 49.09 1019 50.63
44,000 1003 49.13 1015 50.66 1027 52.20 1039 53.76 1050 55.34
46,000 1037 54.03 1048 55.60 1060 57.19 1071 58.78 1082 60.40
48,000 1071 59.29 1082 60.91 1093 62.54 1104 64.17 1115 65.83
52,500 1150 72.51 1160 74.21 1170 75.93 1180 77.66 1190 79.39
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
21,000 780 20.37 801 21.61 820 22.87 840 24.14 859 25.45
25,000 803 23.16 822 24.44 840 25.73 858 27.05 876 28.38
27,000 822 25.30 839 26.61 857 27.94 874 29.28 891 30.64
29,000 843 27.69 859 29.02 876 30.38 892 31.75 908 33.14
31,000 865 30.33 881 31.70 897 33.08 913 34.48 928 35.90
33,000 890 33.25 905 34.64 920 36.06 935 37.49 950 38.93
35,000 916 36.43 930 37.86 945 39.31 959 40.77 973 42.25
37,000 943 39.90 957 41.37 971 42.85 984 44.34 998 45.85
39,000 972 43.68 985 45.18 998 46.69 1011 48.20 1024 49.76
41,000 1001 47.76 1014 49.30 1026 50.84 1039 52.41 1051 53.99
42,000 1031 52.18 1043 53.76 1055 55.33 1067 56.93 1079 58.54
44,000 1062 56.93 1074 58.53 1085 60.15 1097 61.79 1108 63.44
46,000 1094 62.03 1105 63.67 1116 65.33 1127 67.00 1138 68.68
48,000 1126 67.49 1137 69.17 1147 70.87 1158 72.57 1169 74.29
52,500 1200 81.15 1210 82.92 1220 84.69 1230 86.47 1240 88.28

12
Table 7 — Fan Performance — 48/50N 120 Nominal Ton Units Standard Supply Fan Data
LEGEND
Bhp — Brake Horsepower
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 775 8.13 797 8.86 819 9.61 841 10.37 862 11.14
28,000 883 12.01 903 12.85 922 13.70 941 14.56 960 15.43
32,000 991 16.95 1008 17.89 1026 18.85 1043 19.81 1059 20.79
34,000 1045 19.86 1062 20.85 1078 21.86 1094 22.88 1110 23.91
36,000 1099 23.07 1115 24.12 1130 25.18 1145 26.25 1161 27.33
38,000 1153 26.61 1168 27.71 1183 28.83 1197 29.95 1212 31.08
40,000 1207 30.50 1221 31.65 1235 32.82 1249 33.99 1263 35.17
42,000 1261 34.74 1274 35.94 1288 37.16 1301 38.39 1315 39.63
44,000 1315 39.36 1328 40.62 1341 41.89 1354 43.16 1366 44.45
46,000 1369 44.36 1381 45.67 1394 47.00 1406 48.33 1418 49.67
48,000 1423 49.78 1435 51.14 1447 52.51 1458 53.89 1470 55.28
50,000 1477 55.61 1488 57.03 1500 58.45 1511 59.88 1522 61.33
52,000 1530 61.87 1542 63.35 — — — — — —
56,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 883 11.92 903 12.72 924 13.53 943 14.35 963 15.18
28,000 978 16.32 997 17.22 1015 18.13 1032 19.05 1050 19.98
32,000 1076 21.78 1092 22.78 1109 23.79 1125 24.81 1141 25.84
34,000 1126 24.94 1141 26.00 1157 27.06 1172 28.13 1188 29.21
36,000 1176 28.42 1191 29.52 1206 30.64 1220 31.75 1235 32.88
38,000 1226 32.22 1240 33.38 1255 34.54 1269 35.70 1283 36.89
40,000 1277 36.37 1291 37.57 1304 38.79 1318 40.00 1331 41.23
42,000 1328 40.87 1341 42.12 1354 43.38 1367 44.66 1380 45.93
44,000 1379 45.75 1392 47.05 1404 48.36 1417 49.69 1429 51.01
46,000 1430 51.02 1443 52.37 1455 53.74 1467 55.11 1479 56.49
48,000 1482 56.69 1494 58.10 1505 59.51 1517 60.93 1528 62.36
50,000 1534 62.77 1545 64.24 — — — — — —
52,000 ——————————
56,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 982 16.02 1001 16.87 1020 17.73 1038 18.60 1056 19.48
28,000 1067 20.92 1084 21.87 1101 22.83 1118 23.80 1135 24.77
32,000 1157 26.88 1172 27.93 1188 28.98 1203 30.05 1218 31.13
34,000 1203 30.30 1218 31.39 1232 32.50 1247 33.61 1262 34.73
36,000 1249 34.02 1263 35.16 1278 36.32 1292 37.49 1306 38.66
38,000 1296 38.07 1310 39.27 1324 40.48 1337 41.69 1351 42.91
40,000 1344 42.47 1357 43.72 1371 44.97 1384 46.23 1396 47.50
42,000 1393 47.22 1405 48.52 1418 49.83 1430 51.14 1443 52.46
44,000 1441 52.35 1453 53.70 1466 55.06 1478 56.42 1490 57.79
46,000 1490 57.87 1502 59.27 1514 60.67 1526 62.09 1537 63.51
48,000 1540 63.80 — — — — — — — —
50,000 ——————————
52,000 ——————————
56,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 1074 20.37 1092 21.26 1109 22.17 1127 23.08 1144 24.00
28,000 1151 25.76 1167 26.75 1183 27.76 1199 28.76 1215 29.79
32,000 1233 32.21 1248 33.30 1263 34.40 1277 35.50 1292 36.62
34,000 1276 35.87 1290 37.01 1305 38.16 1319 39.32 1333 40.47
36,000 1320 39.84 1333 41.03 1347 42.23 1361 43.43 1374 44.65
38,000 1364 44.14 1377 45.38 1390 46.62 1404 47.88 1416 49.13
40,000 1409 48.79 1422 50.07 1435 51.36 1447 52.67 1460 53.98
42,000 1455 53.78 1467 55.12 1480 56.47 1492 57.81 1504 59.17
44,000 1502 59.16 1514 60.55 1525 61.94 1537 63.34 1549 64.75
46,000 1549 64.93 — — — — — — — —
48,000 ——————————
50,000 ——————————
52,000 ——————————
56,000 ——————————

13
Table 8 — Fan Performance — 48/50N 120 Nominal Ton Units High-Static Supply Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 427 4.78 458 5.82 486 6.86 513 7.92 539 8.98
28,000 489 6.84 515 7.99 541 9.14 565 10.30 589 11.48
32,000 520 8.07 545 9.26 569 10.47 592 11.69 614 12.91
34,000 583 10.94 605 12.24 627 13.55 648 14.88 668 16.21
36,000 614 12.60 636 13.95 656 15.32 676 16.69 696 18.07
38,000 646 14.42 666 15.83 686 17.24 705 18.67 724 20.09
40,000 678 16.41 697 17.86 716 19.32 735 20.80 753 22.28
42,000 710 18.56 729 20.07 747 21.58 764 23.10 782 24.63
44,000 742 20.90 760 22.45 777 24.01 794 25.58 811 27.16
46,000 774 23.41 791 25.01 808 26.62 824 28.23 840 29.86
48,000 807 26.12 823 27.77 839 29.42 854 31.08 870 32.75
50,000 839 29.01 854 30.71 870 32.41 885 34.12 900 35.84
52,000 871 32.11 886 33.86 901 35.61 916 37.36 930 39.12
56,000 936 38.94 950 40.77 964 42.60 977 44.45 991 46.30
60,000 1001 46.62 1014 48.55 1027 50.48 1040 52.41 1052 54.35
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 564 10.05 588 11.12 611 12.20 633 13.28 655 14.37
28,000 611 12.66 633 13.85 655 15.04 675 16.23 695 17.43
32,000 636 14.15 657 15.39 678 16.64 698 17.88 717 19.13
34,000 688 17.54 708 18.89 727 20.24 745 21.59 763 22.95
36,000 715 19.46 734 20.85 752 22.25 770 23.65 787 25.06
38,000 742 21.53 760 22.97 778 24.42 795 25.87 812 27.33
40,000 770 23.76 788 25.26 804 26.75 821 28.25 837 29.76
42,000 798 26.16 815 27.70 831 29.24 848 30.79 863 32.35
44,000 827 28.73 843 30.32 859 31.92 874 33.51 890 35.11
46,000 856 31.49 871 33.12 887 34.76 902 36.40 917 38.06
48,000 885 34.43 900 36.11 915 37.79 929 39.48 944 41.18
50,000 915 37.56 929 39.29 943 41.02 958 42.75 971 44.49
52,000 944 40.88 958 42.66 972 44.43 986 46.21 999 48.01
56,000 1004 48.15 1017 50.02 1031 51.89 1043 53.76 1056 55.63
60,000 1065 56.29 1077 58.23 1090 60.18 1102 62.14 1114 64.11
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 676 15.46 696 16.55 716 17.65 736 18.74 754 19.84
28,000 715 18.63 734 19.84 753 21.05 771 22.25 789 23.47
32,000 736 20.39 755 21.65 773 22.92 790 24.18 808 25.45
34,000 781 24.30 798 25.67 815 27.04 832 28.41 848 29.79
36,000 804 26.48 821 27.89 838 29.31 854 30.73 870 32.16
38,000 829 28.79 845 30.26 861 31.73 877 33.20 892 34.68
40,000 854 31.27 869 32.78 885 34.30 900 35.83 915 37.35
42,000 879 33.91 894 35.47 909 37.04 924 38.61 939 40.18
44,000 905 36.72 920 38.33 934 39.94 949 41.56 963 43.18
46,000 931 39.71 946 41.36 960 43.02 974 44.69 988 46.35
48,000 958 42.88 972 44.58 986 46.28 1000 48.00 1013 49.72
50,000 985 46.24 999 47.99 1012 49.74 1026 51.49 1039 53.25
52,000 1013 49.79 1026 51.58 1039 53.38 1052 55.18 1065 56.99
56,000 1069 57.50 1081 59.38 1094 61.28 1106 63.17 1118 65.06
60,000 1126 66.08 1138 68.04 1149 70.01 1161 72.00 1173 73.97
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 773 20.94 791 22.05 809 23.15 826 24.25 843 25.36
28,000 807 24.69 824 25.91 841 27.13 857 28.35 873 29.57
32,000 825 26.72 842 28.00 858 29.27 874 30.55 890 31.83
34,000 865 31.17 881 32.55 896 33.93 912 35.32 927 36.70
36,000 886 33.59 901 35.02 916 36.46 931 37.89 946 39.33
38,000 908 36.15 923 37.64 937 39.12 952 40.62 967 42.10
40,000 930 38.88 945 40.42 959 41.94 974 43.49 988 45.02
42,000 953 41.76 968 43.34 982 44.93 996 46.51 1009 48.10
44,000 977 44.81 991 46.44 1005 48.06 1018 49.70 1032 51.34
46,000 1001 48.02 1015 49.71 1028 51.38 1042 53.07 1055 54.74
48,000 1026 51.43 1040 53.15 1053 54.87 1065 56.60 1078 58.33
50,000 1052 55.02 1064 56.78 1077 58.56 1090 60.32 1102 62.10
52,000 1077 58.79 1090 60.61 1102 62.43 1115 64.24 1127 66.06
56,000 1130 66.96 1142 68.86 1154 70.76 1165 72.67 1177 74.58
60,000 1184 75.95 1195 77.95 1207 79.93 1218 81.93 1229 83.92

14
Table 9 — Fan Performance — 48/50N 130, 150 Nominal Ton Units Standard Supply Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 841 10.40 862 11.19 882 12.00 902 12.82 922 13.65
30,000 951 15.00 969 15.90 987 16.81 1005 17.73 1022 18.67
34,000 1060 20.74 1076 21.75 1092 22.77 1108 23.80 1124 24.83
36,000 1114 24.09 1130 25.14 1145 26.22 1160 27.29 1175 28.39
38,000 1168 27.76 1183 28.87 1198 29.99 1212 31.13 1227 32.27
40,000 1223 31.78 1237 32.95 1251 34.12 1265 35.31 1278 36.50
42,000 1277 36.17 1290 37.39 1304 38.62 1317 39.85 1330 41.10
44,000 1331 40.94 1344 42.22 1357 43.49 1370 44.78 1382 46.08
46,000 1385 46.11 1398 47.43 1410 48.76 1422 50.11 1434 51.45
48,000 1439 51.68 1451 53.05 1463 54.45 1475 55.84 1487 57.24
50,000 1493 57.68 1505 59.12 1516 60.55 1528 61.99 1539 63.44
52,000 1548 64.13 — — — — — — — —
54,000 ——————————
56,000 ——————————
60,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 941 14.49 961 15.35 980 16.21 998 17.09 1016 17.97
30,000 1040 19.61 1057 20.57 1074 21.54 1091 22.52 1107 23.50
34,000 1140 25.88 1155 26.94 1171 28.01 1186 29.08 1201 30.17
36,000 1190 29.48 1205 30.59 1220 31.71 1234 32.84 1249 33.98
38,000 1241 33.42 1255 34.58 1269 35.76 1283 36.93 1297 38.12
40,000 1292 37.70 1306 38.92 1319 40.14 1332 41.37 1346 42.61
42,000 1343 42.36 1356 43.62 1369 44.90 1382 46.17 1395 47.46
44,000 1395 47.39 1407 48.70 1420 50.02 1432 51.36 1444 52.70
46,000 1446 52.81 1459 54.18 1470 55.55 1482 56.93 1494 58.33
48,000 1498 58.66 1510 60.06 1521 61.50 1533 62.92 1544 64.37
50,000 ——————————
52,000 ——————————
54,000 ——————————
56,000 ——————————
60,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 1034 18.87 1052 19.78 1070 20.69 1087 21.62 1105 22.55
30,000 1123 24.49 1140 25.50 1156 26.52 1172 27.54 1187 28.57
34,000 1216 31.27 1231 32.38 1245 33.49 1260 34.62 1274 35.74
36,000 1263 35.12 1277 36.28 1291 37.44 1305 38.62 1319 39.80
38,000 1311 39.32 1324 40.52 1338 41.73 1351 42.95 1365 44.19
40,000 1359 43.86 1372 45.12 1385 46.38 1398 47.65 1411 48.93
42,000 1408 48.76 1420 50.07 1433 51.38 1445 52.71 1457 54.03
44,000 1457 54.05 1469 55.40 1481 56.76 1493 58.13 1505 59.51
46,000 1506 59.72 1518 61.13 1529 62.55 1541 63.97 — —
48,000 ——————————
50,000 ——————————
52,000 ——————————
54,000 ——————————
56,000 ——————————
60,000 ——————————
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 1122 23.49 1138 24.44 1155 25.40 1172 26.36 1188 27.34
30,000 1203 29.61 1218 30.66 1234 31.72 1249 32.78 1264 33.85
34,000 1289 36.88 1303 38.03 1317 39.18 1331 40.35 1345 41.52
36,000 1333 40.98 1347 42.18 1360 43.38 1374 44.60 1387 45.82
38,000 1378 45.43 1391 46.67 1404 47.93 1417 49.19 1430 50.45
40,000 1423 50.21 1436 51.51 1449 52.81 1461 54.12 1474 55.44
42,000 1470 55.37 1482 56.71 1494 58.06 1506 59.42 1518 60.79
44,000 1517 60.90 1528 62.30 1540 63.70 — — — —
46,000 ——————————
48,000 ——————————
50,000 ——————————
52,000 ——————————
54,000 ——————————
56,000 ——————————
60,000 ——————————

15
Table 10 — Fan Performance — 48/50N 130, 150 Nominal Ton Units High-Static Supply Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 470 6.23 499 7.34 525 8.46 551 9.60 575 10.73
30,000 534 8.75 559 9.98 583 11.22 606 12.46 629 13.71
34,000 567 10.24 590 11.53 613 12.82 635 14.11 656 15.42
36,000 599 11.89 621 13.23 643 14.57 664 15.93 684 17.28
38,000 632 13.71 653 15.10 674 16.50 694 17.90 713 19.31
40,000 665 15.70 685 17.14 704 18.59 724 20.05 742 21.51
42,000 698 17.87 717 19.37 735 20.86 754 22.37 772 23.89
44,000 730 20.22 749 21.77 767 23.32 784 24.88 802 26.44
46,000 764 22.78 781 24.37 798 25.98 815 27.59 832 29.19
48,000 797 25.53 813 27.17 830 28.83 846 30.48 862 32.15
50,000 830 28.49 846 30.19 862 31.88 878 33.59 893 35.30
52,000 863 31.66 879 33.40 894 35.15 909 36.90 924 38.67
54,000 896 35.05 911 36.84 926 38.64 941 40.44 955 42.24
56,000 963 42.51 977 44.40 991 46.29 1004 48.18 1018 50.07
60,000 1030 50.92 1043 52.90 1056 54.88 1069 56.86 1081 58.86
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 599 11.87 622 13.02 644 14.17 665 15.32 686 16.48
30,000 650 14.97 671 16.22 691 17.49 711 18.76 731 20.02
34,000 677 16.73 697 18.04 716 19.36 736 20.68 754 22.01
36,000 704 18.65 723 20.01 742 21.38 761 22.76 779 24.14
38,000 732 20.73 751 22.15 769 23.57 787 25.00 804 26.43
40,000 760 22.98 778 24.45 796 25.92 813 27.41 830 28.89
42,000 789 25.40 806 26.93 823 28.46 840 29.98 856 31.52
44,000 818 28.01 835 29.59 851 31.16 867 32.74 883 34.32
46,000 848 30.81 864 32.44 880 34.06 895 35.69 911 37.33
48,000 878 33.81 893 35.49 909 37.16 923 38.82 938 40.52
50,000 908 37.02 923 38.73 938 40.45 952 42.18 967 43.91
52,000 939 40.42 953 42.20 967 43.96 981 45.74 995 47.52
54,000 969 44.05 983 45.87 997 47.69 1011 49.50 1024 51.33
56,000 1031 51.98 1044 53.89 1057 55.80 1070 57.71 1083 59.63
60,000 1094 60.85 1106 62.86 1118 64.85 1131 66.86 1143 68.87
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 706 17.63 726 18.79 745 19.95 763 21.11 782 22.28
30,000 749 21.29 768 22.57 786 23.84 803 25.12 821 26.40
34,000 772 23.33 790 24.66 808 25.99 825 27.33 842 28.66
36,000 796 25.52 814 26.90 831 28.29 847 29.68 863 31.06
38,000 821 27.86 838 29.30 854 30.73 870 32.18 886 33.62
40,000 846 30.37 862 31.86 878 33.35 894 34.85 909 36.34
42,000 872 33.06 888 34.59 903 36.13 919 37.68 933 39.22
44,000 899 35.91 914 37.50 929 39.10 944 40.69 958 42.29
46,000 926 38.97 940 40.60 955 42.24 969 43.89 983 45.53
48,000 953 42.20 967 43.89 981 45.58 995 47.28 1009 48.97
50,000 981 45.65 995 47.38 1008 49.12 1022 50.86 1035 52.60
52,000 1009 49.30 1022 51.08 1036 52.87 1049 54.66 1062 56.45
54,000 1037 53.16 1051 54.98 1064 56.82 1076 58.66 1089 60.50
56,000 1095 61.55 1108 63.48 1120 65.41 1132 67.34 1144 69.26
60,000 1155 70.88 1166 72.89 1178 74.91 1190 76.93 1201 78.94
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
26,000 799 23.44 817 24.60 834 25.77 851 26.93 867 28.10
30,000 838 27.68 854 28.96 871 30.25 887 31.53 902 32.81
34,000 858 29.99 874 31.33 890 32.67 906 34.02 921 35.36
36,000 879 32.45 895 33.85 911 35.24 926 36.64 941 38.04
38,000 902 35.06 917 36.51 932 37.96 947 39.41 962 40.87
40,000 925 37.84 940 39.33 954 40.84 969 42.34 983 43.85
42,000 948 40.77 963 42.33 977 43.88 991 45.44 1005 46.98
44,000 972 43.88 987 45.48 1001 47.09 1014 48.69 1028 50.31
46,000 997 47.18 1011 48.83 1025 50.50 1038 52.14 1052 53.80
48,000 1023 50.67 1036 52.38 1049 54.07 1063 55.78 1076 57.49
50,000 1049 54.36 1062 56.10 1075 57.85 1088 59.61 1100 61.36
52,000 1075 58.24 1088 60.04 1100 61.83 1113 63.63 1125 65.44
54,000 1102 62.34 1114 64.18 1127 66.03 1139 67.88 1151 69.72
56,000 1156 71.20 1168 73.13 1180 75.08 1192 77.01 1203 78.95
60,000 1212 80.97 1224 83.00 1235 85.03 1246 87.06 — —

16
Table 11 — Fan Performance — 48/50N 75-150 Nominal Ton Units Standard Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 449 2.09 476 2.54 502 3.02 528 3.52 554 4.04
18,000 528 3.38 551 3.91 574 4.46 596 5.03 618 5.62
21,000 609 5.15 629 5.76 648 6.38 668 7.03 687 7.69
24,000 691 7.49 708 8.17 725 8.87 742 9.59 759 10.32
27,000 773 10.45 789 11.22 804 12.00 819 12.79 834 13.60
30,000 856 14.14 870 14.99 884 15.85 897 16.72 911 17.60
33,000 939 18.64 952 19.56 964 20.49 977 21.44 989 22.40
36,000 1022 24.00 1034 25.01 1045 26.02 1057 27.04 1068 28.09
39,000 1106 30.33 1116 31.41 1127 32.50 1137 33.61 1148 34.73
42,000 1189 37.69 1199 38.86 1209 40.04 1219 41.21 1228 42.42
45,000 1272 46.18 1282 47.42 1291 48.68 1300 49.94 1309 51.22
48,000 1356 55.86 1365 57.19 1373 58.52 1382 59.88 1391 61.23
51,000 1440 66.82 1448 68.24 1456 69.65 1464 71.07 1472 72.51
52,500 1482 72.81 1490 74.26 1497 75.71 1505 77.17 1513 78.65
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 579 4.59 604 5.15 629 5.73 653 6.32 677 6.94
18,000 639 6.23 661 6.86 682 7.50 703 8.16 723 8.84
21,000 705 8.36 724 9.06 743 9.77 761 10.50 779 11.24
24,000 776 11.07 792 11.84 809 12.62 825 13.41 842 14.22
27,000 849 14.42 864 15.26 879 16.11 894 16.97 908 17.85
30,000 924 18.49 938 19.40 951 20.33 965 21.26 978 22.21
33,000 1001 23.38 1014 24.36 1026 25.36 1038 26.37 1050 27.39
36,000 1079 29.13 1091 30.20 1102 31.27 1113 32.35 1125 33.44
39,000 1158 35.85 1169 37.00 1179 38.14 1190 39.30 1200 40.47
42,000 1238 43.62 1248 44.84 1258 46.06 1268 47.30 1277 48.54
45,000 1318 52.50 1328 53.79 1337 55.10 1346 56.41 1355 57.73
48,000 1399 62.59 1408 63.96 1416 65.35 1425 66.72 1434 68.13
51,000 1480 73.95 1489 75.40 1497 76.86 1505 78.32 1513 79.80
52,500 1521 80.13 1529 81.63 1537 83.12 1545 84.63 1553 86.14
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 700 7.56 723 8.21 746 8.86 768 9.53 791 10.21
18,000 744 9.53 764 10.24 784 10.96 804 11.69 824 12.44
21,000 797 11.99 815 12.77 833 13.55 851 14.35 868 15.16
24,000 858 15.04 874 15.88 890 16.72 906 17.59 921 18.46
27,000 923 18.74 937 19.64 952 20.56 966 21.48 980 22.43
30,000 991 23.17 1005 24.15 1018 25.13 1031 26.13 1044 27.13
33,000 1063 28.41 1075 29.46 1087 30.52 1099 31.58 1111 32.66
36,000 1136 34.55 1147 35.67 1158 36.79 1169 37.93 1180 39.08
39,000 1211 41.65 1221 42.84 1231 44.04 1242 45.24 1252 46.46
42,000 1287 49.80 1297 51.05 1306 52.33 1316 53.61 1325 54.90
45,000 1364 59.05 1373 60.40 1382 61.74 1391 63.09 1400 64.46
48,000 1442 69.53 1451 70.94 1459 72.37 1468 73.80 1476 75.23
51,000 1521 81.28 1529 82.78 1537 84.28 1545 85.78 1553 87.30
52,500 1560 87.66 1568 89.18 1576 90.72 1584 92.27 1592 93.83
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 813 10.90 834 11.60 856 12.31 877 13.02 898 13.75
18,000 843 13.19 862 13.96 881 14.74 900 15.53 919 16.34
21,000 886 15.98 903 16.81 920 17.66 937 18.51 954 19.38
24,000 937 19.35 952 20.25 968 21.15 983 22.08 999 23.01
27,000 994 23.38 1009 24.34 1023 25.32 1037 26.30 1050 27.30
30,000 1057 28.15 1070 29.18 1083 30.22 1095 31.27 1108 32.33
33,000 1123 33.74 1135 34.84 1146 35.94 1158 37.06 1170 38.19
36,000 1191 40.23 1202 41.39 1213 42.57 1224 43.76 1235 44.95
39,000 1262 47.68 1273 48.93 1283 50.18 1293 51.42 1303 52.69
42,000 1335 56.21 1344 57.51 1354 58.82 1364 60.16 1373 61.48
45,000 1409 65.83 1418 67.22 1427 68.61 1436 70.02 1445 71.42
48,000 1484 76.69 1493 78.13 1501 79.59 1510 81.07 1518 82.55
51,000 1561 88.80 1569 90.34 1577 91.89 1585 93.43 1593 94.97
52,500 1599 95.40 1607 96.95 1615 98.52 1623 100.12 1630 101.70

17
Table 12 — Fan Performance — 48/50N 75 Nominal Ton Units High-Static Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 332 1.50 363 1.98 392 2.50 420 3.04 447 3.61
18,000 387 2.36 413 2.91 438 3.50 462 4.11 486 4.75
21,000 443 3.52 466 4.15 488 4.81 509 5.50 530 6.21
24,000 500 5.03 520 5.74 540 6.48 559 7.24 578 8.03
27,000 558 6.96 576 7.75 593 8.56 611 9.40 628 10.26
30,000 616 9.34 633 10.22 648 11.11 664 12.02 679 12.95
33,000 675 12.23 690 13.19 704 14.16 718 15.15 733 16.16
36,000 734 15.69 747 16.72 761 17.77 774 18.85 787 19.94
39,000 793 19.75 805 20.87 818 22.00 830 23.16 842 24.32
42,000 852 24.48 864 25.68 875 26.89 886 28.13 898 29.37
45,000 911 29.92 922 31.21 933 32.50 943 33.81 954 35.14
48,000 971 36.12 981 37.48 991 38.87 1001 40.25 1011 41.66
51,000 1030 43.14 1040 44.59 1049 46.06 1058 47.52 1068 49.00
52,500 1060 46.98 1069 48.46 1078 49.97 1087 51.48 1097 53.00
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 473 4.20 499 4.82 524 5.45 548 6.11 571 6.78
18,000 509 5.41 532 6.10 554 6.80 576 7.53 597 8.27
21,000 551 6.94 571 7.69 591 8.47 610 9.26 630 10.07
24,000 596 8.83 615 9.66 632 10.50 650 11.36 668 12.24
27,000 644 11.13 661 12.03 677 12.95 694 13.88 710 14.83
30,000 695 13.91 710 14.87 725 15.86 740 16.86 754 17.88
33,000 747 17.19 761 18.23 774 19.29 788 20.37 802 21.46
36,000 800 21.04 813 22.16 826 23.30 838 24.45 851 25.61
39,000 854 25.50 866 26.70 878 27.91 890 29.14 902 30.37
42,000 909 30.63 920 31.91 931 33.19 942 34.49 953 35.81
45,000 965 36.47 975 37.83 986 39.19 996 40.57 1006 41.96
48,000 1021 43.09 1031 44.52 1040 45.95 1050 47.41 1060 48.88
51,000 1077 50.50 1087 52.02 1096 53.54 1105 55.07 1114 56.62
52,500 1106 54.55 1115 56.09 1124 57.66 1133 59.23 1142 60.81
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 594 7.46 616 8.16 638 8.86 660 9.59 680 10.32
18,000 618 9.02 638 9.79 658 10.58 678 11.38 697 12.20
21,000 649 10.90 667 11.74 685 12.60 703 13.47 721 14.35
24,000 685 13.13 702 14.05 719 14.97 735 15.92 751 16.87
27,000 725 15.79 741 16.77 756 17.77 772 18.78 787 19.81
30,000 769 18.92 783 19.97 798 21.03 812 22.12 826 23.21
33,000 815 22.57 829 23.69 842 24.83 855 25.98 868 27.14
36,000 863 26.79 876 27.98 888 29.19 900 30.41 913 31.65
39,000 913 31.62 925 32.89 936 34.18 948 35.46 959 36.78
42,000 964 37.14 975 38.47 986 39.83 997 41.20 1008 42.58
45,000 1017 43.37 1027 44.78 1037 46.20 1047 47.65 1057 49.10
48,000 1070 50.36 1079 51.86 1089 53.35 1099 54.87 1108 56.41
51,000 1124 58.18 1133 59.74 1142 61.33 1151 62.91 1160 64.52
52,500 1151 62.42 1160 64.02 1169 65.64 1177 67.26 1186 68.90
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 701 11.06 721 11.82 741 12.58 760 13.35 779 14.13
18,000 716 13.02 734 13.86 753 14.70 771 15.56 789 16.43
21,000 739 15.25 756 16.16 773 17.09 790 18.02 806 18.97
24,000 768 17.84 784 18.82 799 19.82 815 20.83 830 21.84
27,000 802 20.84 816 21.89 831 22.96 846 24.04 860 25.12
30,000 840 24.32 853 25.44 867 26.58 881 27.72 894 28.88
33,000 881 28.32 894 29.51 906 30.70 919 31.93 932 33.15
36,000 925 32.90 937 34.15 949 35.42 961 36.71 972 38.00
39,000 971 38.09 982 39.43 993 40.77 1004 42.12 1015 43.49
42,000 1018 43.96 1029 45.36 1039 46.78 1050 48.21 1060 49.64
45,000 1067 50.56 1077 52.05 1087 53.52 1097 55.02 1107 56.53
48,000 1118 57.94 1127 59.48 1137 61.05 1146 62.62 1155 64.19
51,000 1169 66.13 1178 67.75 1187 69.40 1196 71.04 1205 72.70
52,500 1195 70.55 1204 72.22 1213 73.88 1221 75.56 1230 77.26

18
Table 13 — Fan Performance — 48/50N 90 Nominal Ton Units High-Static Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 266 1.19 298 1.69 328 2.23 358 2.80 386 3.41
18,000 307 1.82 334 2.38 360 2.99 386 3.63 411 4.31
21,000 349 2.65 373 3.30 396 3.97 418 4.69 440 5.43
24,000 392 3.75 413 4.47 434 5.21 454 6.00 474 6.81
27,000 436 5.13 455 5.92 474 6.74 492 7.60 510 8.48
30,000 481 6.83 498 7.70 515 8.60 531 9.53 547 10.48
33,000 526 8.90 541 9.85 556 10.82 572 11.82 587 12.85
36,000 571 11.34 585 12.39 599 13.44 613 14.51 627 15.62
39,000 616 14.24 629 15.35 642 16.48 655 17.64 668 18.81
42,000 661 17.60 674 18.79 686 20.00 698 21.23 710 22.49
45,000 707 21.46 718 22.73 730 24.01 741 25.34 752 26.66
48,000 753 25.86 763 27.21 774 28.58 785 29.97 795 31.38
51,000 798 30.83 808 32.26 818 33.72 828 35.18 838 36.67
52,500 821 33.55 831 35.02 841 36.51 850 38.01 860 39.53
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 413 4.05 439 4.71 465 5.39 489 6.09 513 6.81
18,000 435 5.01 458 5.75 481 6.50 503 7.28 525 8.07
21,000 462 6.20 483 7.00 504 7.82 524 8.67 544 9.54
24,000 493 7.65 512 8.51 531 9.40 549 10.31 568 11.25
27,000 527 9.39 545 10.32 562 11.28 579 12.26 595 13.26
30,000 563 11.46 579 12.47 595 13.49 611 14.54 626 15.61
33,000 601 13.90 616 14.97 631 16.07 645 17.19 659 18.32
36,000 641 16.74 654 17.89 668 19.05 681 20.23 694 21.44
39,000 681 20.02 693 21.23 706 22.47 718 23.72 731 25.00
42,000 722 23.76 734 25.05 745 26.36 757 27.68 769 29.03
45,000 763 28.01 775 29.38 786 30.76 797 32.16 807 33.58
48,000 806 32.80 816 34.25 827 35.71 837 37.16 847 38.67
51,000 848 38.17 858 39.69 868 41.22 878 42.77 888 44.35
52,500 870 41.08 879 42.63 889 44.21 899 45.79 908 47.40
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
15,000 537 7.54 560 8.29 582 9.05 604 9.82 625 10.60
18,000 547 8.89 568 9.72 588 10.56 608 11.43 628 12.30
21,000 563 10.42 583 11.32 601 12.25 620 13.18 638 14.14
24,000 586 12.20 603 13.18 621 14.17 638 15.18 655 16.21
27,000 612 14.28 628 15.32 644 16.38 660 17.46 676 18.56
30,000 641 16.69 656 17.80 671 18.93 686 20.08 701 21.24
33,000 673 19.47 687 20.65 701 21.85 715 23.06 728 24.29
36,000 707 22.67 720 23.91 733 25.17 746 26.45 759 27.74
39,000 743 26.29 755 27.61 767 28.93 779 30.29 791 31.65
42,000 780 30.40 792 31.78 803 33.18 814 34.59 826 36.03
45,000 818 35.02 829 36.46 840 37.94 851 39.43 861 40.93
48,000 857 40.18 868 41.71 878 43.24 888 44.80 898 46.38
51,000 897 45.93 907 47.52 917 49.13 926 50.76 936 52.40
52,500 918 49.03 927 50.66 936 52.30 946 53.98 955 55.66

19
Table 14 — Fan Performance — 48/50N 105-150 Nominal Ton Units High-Static Return Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 260 2.40 284 3.15 308 3.96 330 4.82 352 5.73
28,000 296 3.51 317 4.36 337 5.25 357 6.21 377 7.20
30,000 315 4.19 334 5.08 353 6.03 372 7.02 390 8.06
32,000 333 4.95 351 5.90 369 6.89 387 7.93 404 9.01
34,000 351 5.81 369 6.81 386 7.85 403 8.94 419 10.06
36,000 370 6.78 387 7.82 403 8.92 419 10.04 434 11.21
38,000 389 7.84 405 8.94 420 10.08 435 11.25 450 12.47
40,000 408 9.03 423 10.18 437 11.37 452 12.59 466 13.86
42,000 427 10.33 441 11.53 455 12.76 469 14.04 482 15.35
44,000 446 11.76 459 13.01 473 14.30 486 15.62 499 16.99
46,000 465 13.31 478 14.61 491 15.95 503 17.33 516 18.74
48,000 484 15.01 496 16.36 509 17.75 521 19.17 533 20.64
50,000 503 16.84 515 18.25 527 19.69 539 21.16 550 22.67
52,000 522 18.83 534 20.28 545 21.78 556 23.31 568 24.85
60,000 599 28.36 609 30.04 619 31.75 629 33.47 639 35.21
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 472 11.98 490 13.12 508 14.30 526 15.49 543 16.71
28,000 485 13.96 502 15.19 518 16.46 535 17.75 551 19.05
30,000 493 15.07 510 16.35 525 17.65 541 18.98 557 20.34
32,000 503 16.28 518 17.60 534 18.95 549 20.32 564 21.72
34,000 513 17.58 528 18.94 543 20.33 557 21.75 572 23.20
36,000 524 18.99 539 20.39 553 21.82 567 23.29 581 24.77
38,000 536 20.51 550 21.96 564 23.43 577 24.94 590 26.46
40,000 549 22.15 562 23.64 575 25.16 588 26.70 601 28.27
42,000 562 23.91 575 25.45 587 27.00 600 28.59 612 30.20
44,000 575 25.81 588 27.38 600 28.98 612 30.61 624 32.26
46,000 589 27.83 601 29.45 613 31.10 625 32.76 636 34.46
48,000 604 30.00 615 31.66 627 33.35 638 35.07 649 36.81
50,000 619 32.31 630 34.02 641 35.75 652 37.50 662 39.29
52,000 634 34.78 644 36.54 655 38.31 666 40.11 676 41.93
60,000 697 46.29 706 48.22 716 50.17 725 52.15 734 54.14
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
24,000 561 17.94 577 19.20 594 20.47 610 21.77 626 23.07
28,000 567 20.39 582 21.75 598 23.13 613 24.52 628 25.94
30,000 572 21.73 587 23.13 602 24.56 616 26.00 631 27.47
32,000 578 23.15 593 24.60 607 26.06 621 27.55 635 29.06
34,000 586 24.66 600 26.15 614 27.66 627 29.20 641 30.76
36,000 594 26.29 608 27.82 621 29.37 634 30.95 647 32.55
38,000 604 28.02 617 29.59 629 31.19 642 32.82 655 34.45
40,000 614 29.86 626 31.48 639 33.12 651 34.78 663 36.47
42,000 624 31.84 637 33.50 649 35.17 661 36.88 672 38.60
44,000 636 33.94 648 35.64 659 37.36 671 39.11 682 40.88
46,000 648 36.18 659 37.93 670 39.69 682 41.48 693 43.28
48,000 660 38.56 671 40.34 682 42.16 693 43.98 704 45.83
50,000 673 41.08 684 42.91 695 44.78 705 46.64 716 48.54
52,000 687 43.77 697 45.64 707 47.54 718 49.46 728 51.38
60,000 744 56.17 753 58.20 762 60.27 771 62.37 780 64.48

20
Table 15 — Fan Performance — 48/50N 75 Nominal Ton Units Standard Power Exhaust Fan Data
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
5,000 294 0.39 375 0.58 438 0.77 491 0.96 538 1.14
8,000 361 1.03 436 1.39 496 1.72 548 2.04 594 2.35
10,000 409 1.72 480 2.21 538 2.66 589 3.08 634 3.49
12,000 459 2.70 526 3.32 582 3.89 631 4.42 676 4.94
14,000 511 4.00 575 4.76 628 5.46 676 6.12 719 6.75
16,000 565 5.68 624 6.59 676 7.42 722 8.21 763 8.97
18,000 620 7.80 676 8.85 725 9.83 769 10.76 809 11.64
20,000 676 10.41 728 11.61 775 12.73 817 13.79 857 14.82
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
1.2 1.4 1.6 1.8 2.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
5,000 581 1.33 621 1.52 657 1.71 692 1.90 725 2.09
8,000 636 2.66 675 2.96 711 3.26 746 3.56 778 3.85
10,000 675 3.89 714 4.28 749 4.66 783 5.05 815 5.43
12,000 716 5.44 754 5.93 789 6.41 822 6.89 854 7.36
14,000 758 7.37 795 7.96 830 8.55 863 9.12 894 9.69
16,000 802 9.70 838 10.41 872 11.11 904 11.79 935 12.46
18,000 847 12.50 882 13.33 915 14.14 947 14.93 977 15.72
20,000 893 15.80 927 16.76 960 17.69 991 18.61 1021 19.50
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
2.2 2.4 2.6 2.8 3.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
5,000 756 2.28 786 2.48 814 2.67 842 2.87 868 3.07
8,000 809 4.15 838 4.45 867 4.75 894 5.04 920 5.34
10,000 846 5.80 875 6.18 903 6.55 930 6.92 957 7.30
12,000 884 7.82 913 8.28 941 8.74 968 9.19 994 9.65
14,000 924 10.25 952 10.80 980 11.35 1006 11.89 1032 12.43
16,000 964 13.12 993 13.77 1020 14.42 1046 15.06 1072 15.69
18,000 1006 16.49 1034 17.24 1061 18.00 1087 18.74 1112 19.47
20,000 1049 20.39 1077 21.26 1103 22.12 1129 22.97 1153 23.81
AIRFLOW
(cfm)
AVAILABLE EXTERNAL STATIC PRESSURE (in. wg)
3.2 3.4 3.6 3.8 4.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
5,000 894 3.28 919 3.48 943 3.69 967 3.90 990 4.11
8,000 946 5.64 971 5.94 995 6.24 1018 6.54 1041 6.84
10,000 982 7.67 1007 8.04 1030 8.41 1054 8.78 1076 9.15
12,000 1019 10.10 1043 10.55 1067 11.00 1090 11.45 1113 11.89
14,000 1057 12.97 1081 13.51 1105 14.04 1128 14.57 1150 15.10
16,000 1096 16.32 1120 16.95 1144 17.57 1166 18.19 1189 18.81
18,000 1136 20.20 1160 20.93 1183 21.64 1206 22.36 1228 23.07
20,000 1178 24.64 1201 25.47 1224 26.29 1246 27.10 1268 27.91