7
Fig. 7 —Size 024 Fan Curves
NOTES for Figs. 3 through 7:
1. There are multiple ESP settings available for each ducted
unit.
2. All fan curves show examples of fan characteristics of the
"MAX. ESP," "RATING ESP," and "MIN. ESP" settings;
these curves are shown for High (H), Medium (M), and
Low (S) speeds, as selected by the user at the controller.
3. All tables show air flows at “H-Speed” for each ESP
setting. ESP settings are listed in the first column of each
table.
4. Please select ESP setting according to connected
ductwork system.
5. Please refer to Wired Controller manual for details on
static pressure settings.
INSTALLATION
Step 1 — Unpack and Inspect Units
Units are packaged for shipment to avoid damage during
normal transit and handling. It is the receiving party’s
responsibility to inspect the equipment upon arrival. Any
obvious damage to the carton and/or its contents should be
reported on the bill of lading and a claim should be filed with
the transportation company and the factory. Unit should always
be stored in a dry place, and in the proper orientation as marked
on the carton.
After determining the condition of the carton exterior, carefully
remove each unit from the carton and inspect for hidden
damage. Check to make sure that items such as accessory kit,
thermostats, controller, etc. are accounted for whether
packaged separately or shipped at a later date. Any hidden
damage should be recorded, a claim should be filed with the
transportation company, and the factory should be notified. In
the event a claim for shipping damage is filed, the unit,
shipping carton, and all packing must be retained for physical
inspection by the transportation company. All units should be
stored in the factory shipping carton with internal packaging in
place until installation.
PROTECTING UNITS FROM DAMAGE — Do not apply
force or pressure to the coil, piping, or drain stub-outs during
handling. All units should be handled by the chassis or as close
as possible to the unit mounting point locations.
The unit must always be properly supported. Temporary
supports used during installation or service must be adequate to
hold the unit securely. To maintain warranty, protect units
against hostile environments (such as rain, snow or extreme
temperature), theft, vandalism, and debris on jobsite.
Equipment covered in this manual is not suitable for outdoor
installations. Do not allow foreign material to fall into drain
pan. Prevent dust and debris from being deposited on motor,
fan wheels and coils. Failure to do so may have serious adverse
effects on unit operation and in the case of motor and blower
assembly, may result in immediate or premature failure. Failure
of any unit caused by deposits of foreign material on the motor
or blower wheels will not be covered by the manufacturer’s
warranty. Some units and/or job conditions may require some
form of temporary covering during construction.
PREPARING JOBSITE FOR UNIT INSTALLATION —
To save time and to reduce the possibility of costly errors, set
up a complete sample installation in a typical room at job-site.
Check all critical dimensions such as pipe, wire, and duct
connections requirements. Refer to job drawings and product
dimension drawings as required. Instruct all trades in their parts
of the installation. Units must be installed in compliance with
all applicable local code requirements.
IDENTIFYING AND PREPARING UNITS — Be sure
power requirements match available power source. Refer to
unit nameplate and wiring diagram. In addition:
• Check all tags on unit to determine if shipping screws are
to be removed. Remove screws as directed.
• Rotate the fan wheel by hand to ensure that the fan is
unrestricted and can rotate freely. Check for shipping
damage and fan obstructions. Adjust blower motor as
required.
ESP
FAN
SPEED
RANGE OF AVAILABLE AIRFLOW RATE IN
H-SPEED
Max Point
Mid Point
Min Point
Max
CFM
SP
(in.)
Mid
CFM
SP
(in.)
Min
CFM
SP
(in.)
0.04
H
610
0.00
530
0.04
451
0.07
0.08
H
610
0.04
530
0.08
451
0.11
0.12
H
610
0.08
530
0.12
451
0.16
0.16
H
610
0.12
530
0.16
451
0.20
0.20
H
610
0.16
530
0.20
451
0.24
LEGEND
ESP
—
External Static Pressure
H-S
—
High Speed
L-S
—
Low Speed
M-S
—
Medium Speed
SP
—
Static Pressure
0
0.04
0.08
0.12
0.16
0.2
0.24
300
400
500
600
700
800
900
Fan Curve Characteristics
Airflow (cfm)
External
Static Pressure (in. wg)
700
H-S
H-S
H-S
M-S
M-S
M-S
L-S
L-S
L-S
Lower limit of ESP
(Min. ESP)
(Rating
E
Low
S
er limit of ESP
P)
(Rating E
Upper limit of ESP
SP)
(M
r li
Low ax
E
e
SP
)
mit of ESP
ESP
Upper limit of
P)
(M
(Min.ES
ax E
SP
Upper limit of ESP
)
CAUTION
To avoid equipment damage, do not lift unit by the drain
pipe or refrigerant piping. Unit should be lifted using the
mounting brackets.
