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54
APPENDIX III. FA N PERFORMANCE
General Fan Performance Notes:
1. Interpolation is permissible. Do not extr apolate.
2. External static pressure is the static pre ssure 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. Factory options and accessories
may add static pressure losses. Selection software is available, through your salesperson, to help you select the best
motor/drive combination for your application.
4. The Fan Performance tables offer motor/drive recomme ndations. In cases when two motor/drive combi nations would
work, Carrier recommended the lower horsepower option.
5. For information on the electrical properties of Carrier’s motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Carrier’s motors, see the a pplication data section of this book.
50TC