MAXIMUM EQUIVALENT VENT LENGTH - FT. (M)

Table 1 – Maximum Equivalent Vent Length - Ft. (M)

0 to 4500 Ft. (0 to 1370 M) Altitude

NOTE: Maximum Equivalent Vent Length (MEVL) includes standard and concentric vent termination and does NOT include elbows.

Use Table 2 - Deductions from Maximum Equivalent Vent Length to determine allowable vent length for each application.

 

Unit Size

 

 

DIRECT VENT (2-PIPE) AND NON-DIRECT VENT (1-PIPE)

 

 

 

Altitude

BTU/Hr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vent Pipe Diameter (in.) 1

 

 

 

 

 

FT (M)

 

 

 

 

 

 

 

 

 

 

 

 

 

1-1/2

2

 

 

2-1/2

 

3

 

4

 

40,000 3

50

 

(15.2)

210

(64.0)

250

 

(76.2)

NA 2

 

 

NA

 

 

 

60,000

30

 

(9.1)

135

(41.1)

235

 

(71.6)

265

 

(80.8)

NA

 

 

0 to 2000

80,000

20

 

(6.1)

70

(21.3)

175

 

(53.3)

235

 

(71.6)

265

 

(80.8)

(0 to 610)

 

 

 

 

 

 

 

 

(33.5)

 

 

 

 

 

 

100,000

NA

 

 

25

(7.6)

110

 

235

 

(71.6)

265

 

(80.8)

 

120,000

NA

 

 

NA

 

15

 

(4.6)

100

 

(30.5)

250

 

(76.2)

 

140,000 4

NA

 

 

NA

 

10

 

(3.0)

 

 

 

 

 

 

 

 

 

 

 

90

 

(27.4)

210

 

(64.0)

 

40,000

45

 

(13.7)

198

(60.4)

232

 

(70.7)

NA

 

 

NA

 

 

 

60,000

27

 

(8.2)

127

(38.7)

222

 

(67.7)

250

 

(76.2)

NA

 

 

2001 to 3000

80,000

17

 

(5.2)

64

(19.5)

165

 

(50.3)

222

 

(67.7)

249

 

(75.9)

(610 to 914)

 

 

 

 

 

 

 

 

(31.7)

 

 

 

 

 

 

100,000

NA

 

 

22

(6.7)

104

 

223

 

(68.0)

250

 

(76.2)

 

120,000

NA

 

 

NA

 

11

 

(3.4)

93

 

(28.3)

237

 

(72.2)

 

140,000 4

NA

 

 

NA

 

NA

 

 

80

 

(24.4)

185

 

(56.4)

 

40,000

39

 

(11.9)

184

(56.1)

214

 

(65.2)

NA

 

 

NA

 

 

 

60,000

23

 

(7.0)

119

(36.3)

210

 

(64.0)

235

 

(71.6)

NA

 

 

3001 to 4000

80,000

15

 

(4.6)

59

(18.0)

155

 

(47.2)

210

 

(64.0)

232

 

(70.7)

(914 to 1219)

100,000

NA

 

 

19

(5.8)

98

 

(29.9)

211

 

(64.3)

236

 

(71.9)

 

120,000

NA

 

 

NA

 

8

 

(2.4)

86

 

(26.2)

224

 

(68.3)

 

140,000 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

 

 

NA

 

NA

 

 

79

 

(24.1)

158

 

(48.2)

 

40,000

36

 

(11.0)

177

(53.9)

205

 

(62.5)

NA

 

 

NA

 

 

4001 to 4500

60,000

21

 

(6.4)

115

(35.1)

204

 

(62.2)

228

 

(69.5)

NA

 

 

80,000

14

 

(4.3)

56

(17.1)

150

 

(45.7)

202

(61.6)

224

(68.3)

(1219 to

 

 

1370)

100,000

NA

 

 

17

(5.2)

94

 

(28.7)

205

(62.5)

229

(69.8)

 

120,000

NA

 

 

NA

 

NA

 

 

83

(25.3)

217

(66.1)

 

140,000 4

 

 

 

 

 

 

 

 

 

 

 

 

 

NA

 

 

NA

 

NA

 

 

69

(21.0)

146

(44.5)

NOTES: See notes at end of venting tables.

See Table 3 for altitudes over 4500 ft. (1370 M)

ELBOW CONFIGURATIONS

VENT TERMINAL CONFIGURATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Concentric

Long

Medium

Mitered

Standard

A11580

915SA

7

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Bryant 915S warranty Maximum Equivalent Vent Length FT. M, Direct Vent 2-PIPE and NON-DIRECT Vent 1-PIPE

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