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FAN PERFORMANCE
General Fan Performance Notes
See Tables 14-40 for fan performance data.
1. Interpolation is permissible. Do not extrapolate.
2. External static pressure is the static pressure difference
between the return duct and the supply duct plus the static
pressure caused by any FIOPs or accessories.
3. Tabular data accounts for pressure loss due to clean filters,
unit casing and wet coils.
4. Factory options and accessories may effect static pressure
losses. Selection software is available, through your salesper-
son, to help you select the best motor/drive combination for
your application.
5. The fan performance tables (see Tables 14-40) offer
motor/drive recommendations. In cases when two
motor/drive combinations would work, Carrier recommends
the lower horsepower option.
6. The EPACT (Energy Policy Act of 1992) regulates energy
requirements for specific types of indoor fan motors.
Motors regulated by EPACT include any general purpose,
T-frame (three-digit, 143 and larger), single-speed, foot
mounted, polyphase, squirrel cage induction motors of
NEMA (National Electrical Manufacturers Association)
design A and B, manufactured for use in the United States.
Ranging from 1 to 200 Hp, these continuous-duty motors
operate on 230 and 460 volt, 60 Hz power. If a motor does
not fit into these specifications, the motor does not have to
be replaced by an EPACT compliant energy-efficient motor.
Variable-speed motors are exempt from EPACT compliance
requirements.
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