Static pressure adders, Economizer, Perfect humidity – Bryant LEGACY LINE 580J User Manual

Page 48

Advertising
background image

48

Table 32 – STATIC PRESSURE ADDERS (Factory Options and/or Accessories)

Economizer

3 --- 6 TONS

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 --- 12.5 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

Perfect Humidity

3---6 TONS

CFM (in. wg)

1000

1250

1500

1750

2000

2250

2500

2750

3000

3 Tons

0.04

0.052

0.07

---

---

---

---

---

---

4 Tons

---

0.106

0.138

0.172

0.21

---

---

---

---

5 Tons

---

---

0.138

0.172

0.21

0.252

0.30

---

---

6 Tons

---

---

---

0.112

0.125

0.161

0.19

0.22

0.25

7.5---12.5 TONS

CFM (in. wg)

2250

2500

2750

3000

3250

3500

3750

4000

4250

4500

4750

5000

5250

5500

5750

6000

7.5 Tons

0.12

0.14

0.16

0.19

0.21

0.23

0.26

---

---

---

---

---

---

---

---

---

8.5 Tons

---

0.11

0.12

0.13

0.15

0.17

0.18

0.20

0.22

---

---

---

---

---

---

---

10 Tons

---

---

---

0.13

0.15

0.17

0.18

0.20

0.22

0.24

0.26

0.28

---

---

---

---

12.5 Tons

---

---

---

---

---

0.17

0.18

0.20

0.22

0.24

0.26

0.28

0.31

0.33

0.36

0.39

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. Tabular 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 the tables above. 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 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.
7. 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 require-

ments. Therefore, the indoor fan motors for Bryant 580J04--14 units are exempt from these requirements.

580J

Advertising