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Table 20 – STATIC PRESSURE ADDERS ( Factory Options and/or Accessories)
Economizer
3 --- 6 TO NS
CFM (in. wg) 600 800 1000 1250 1500 1750 2000 2250 2500 2750 3000
Vertical
Economizer
0.01 0.02 0.04 0.05 0.07 0.09 0.12 0.15 0.18 0.22 0.26
Horizontal
Economizer
0.02 0.03 0.04 0.06 0.08 0.10 0.13 0.15 0.18 0.23 0.28
7.5 --- 8.5 TONS
CFM (in. wg) 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 5500 5750 6000
Vertical
Economizer
0.06 0.08 0.09 0.12 0.13 0.15 0.17 0.20 0.22 0.25 0.29 0.33 0.36 0.40 0.44 0.48
Horizontal
Economizer
0.08 0.10 0.13 0.15 0.18 0.21 0.25 0.28 0.30 0.34 0.39 0.43 0.47 0.51 0.56 0.60
Electric Heaters
3 --- 6 TO NS
CFM (in. wg) 600 900 1200 1400 1600 1800 2000 2200 2400 2600
1Electric
Heater Module
0.03 0.05 0.07 0.09 0.09 0.10 0.11 0.11 0.12 0.13
2Electric
Heater Modules
0.13 0.15 0.16 0.16 0.16 0.17 0.17 0.17 0.18 0.18
7.5 --- 8.5 TONS
CFM (in. wg) 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 5500 5750 6000
1Electric
Heater Module
0.03 0.04 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.18
2Electric
Heater Modules
0.04 0.05 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.13 0.15 0.16 0.17 0.19 0.20
General fan performance notes:
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. Ta bular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories
may add static pressure losses, as shown in Table 20. Selecti on software is available, through your salesperson, to help
you select the best motor/drive combina tion for your application.
4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would
work, Bryant recommended the lower horsepower option.
5. For information on the electrical properties of Bryant motors, please see the Electrical information section of this
book.
6. For more information on the performance limits of Bryant motors, see the application data section of this book.
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