Table 3 Ð Maximum Gas Flow Capacity*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOMINAL

INTERNAL

 

 

 

 

 

 

LENGTH OF PIPE, FT²

 

 

 

 

 

IRON PIPE,

 

 

 

 

 

 

 

 

 

 

 

DIAMETER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIZE

(in.)

10

20

 

30

40

50

60

70

80

90

100

125

150

175

200

(in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1¤2

.622

175

120

 

97

82

73

66

61

57

53

50

44

40

Ð

Ð

3¤4

.824

360

250

 

200

170

151

138

125

118

110

103

93

84

77

72

1

1.049

680

465

 

375

320

285

260

240

220

205

195

175

160

145

135

11¤4

1.380

1400

950

 

770

600

580

530

490

460

430

400

360

325

300

280

11¤2

1.610

2100

1460

 

1180

990

900

810

750

690

650

620

550

500

460

430

*Capacity of pipe in cu ft of gas per hr for gas pressure of 0.5 psig or less. Pressure drop of 0.5-in. wg (based on a 0.60 speci®c gravity gas). Refer to Table C-4, National Fire Protection Association NFPA 54.

²This length includes an ordinary number of ®ttings.

SUPPLY DUCT OPENING

RETURN DUCT OPENING

Fig. 16 Ð Supply and Return Duct Openings

Fig. 18 Ð Vertical Duct Cover Removed

Fig. 17 Ð Lance Location for Vertical Duct

Opening CoverFig. 19 Ð Removal of Vertical Discharge Opening Cover

Ð17Ð

Page 17
Image 17
Bryant 589A, 588A user manual Maximum Gas Flow Capacity, Ð17Ð, Internal Length of PIPE, FT² Iron Pipe Diameter Size

589A, 588A specifications

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