TABLE 7

Vent Connector Capacity

Type B Double−Wall Vents with Single−Wall Metal Connectors

Serving Two or More Category I Appliances

 

 

 

 

 

Vent and Connector Diameter − D (inches)

 

 

 

Height

Lateral

 

 

 

 

 

 

 

 

 

 

 

 

 

3 Inch

4 Inch

 

 

5 Inch

 

6 Inch

H

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appliance Input Rating in Thousands of Btu Per Hour

 

 

 

(feet)

(feet)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MIN

 

MAX

MIN

 

MAX

MIN

 

MAX

MIN

 

MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

NA

 

NA

NA

 

NA

NA

 

NA

NA

 

NA

6

2

NA

 

NA

NA

 

NA

NA

 

NA

168

 

182

 

3

NA

 

NA

NA

 

NA

121

 

131

175

 

198

 

1

NA

 

NA

NA

 

NA

NA

 

NA

NA

 

NA

8

2

NA

 

NA

NA

 

NA

125

 

126

184

 

193

 

3

NA

 

NA

NA

 

NA

130

 

138

191

 

208

 

1

NA

 

NA

NA

 

NA

119

 

121

182

 

186

10

2

NA

 

NA

84

 

85

124

 

134

189

 

203

 

3

NA

 

NA

89

 

91

129

 

144

197

 

217

 

1

NA

 

NA

79

 

87

116

 

138

177

 

214

15

2

NA

 

NA

83

 

94

121

 

150

185

 

230

 

3

NA

 

NA

87

 

100

127

 

160

193

 

243

 

1

49

 

56

78

 

97

115

 

152

175

 

238

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

2

52

 

59

82

 

103

120

 

163

182

 

252

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

55

 

62

87

 

107

125

 

172

190

 

264

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

47

 

60

77

 

110

112

 

175

169

 

278

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

2

51

 

62

81

 

115

117

 

185

177

 

290

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

54

 

64

85

 

119

122

 

193

185

 

300

NOTE − Single appliance venting configurations with zero lateral lengths are assumed to have no elbows in the vent system. For all other vent configurations, the vent system is assumed to have two 90° elbows. For each additional 90° elbow or equivalent (for example two 45° elbows equal one 90° elbow) beyond two, the maximum capacity listed in the venting table should be reduced by 10 percent (0.90 x maxi- mum listed capacity).

TABLE 8

Common Vent Capacity

Type B Double−Wall Vents with Single−Wall Metal Connectors

Serving Two or More Category I Appliances

Vent

 

 

 

Common Vent Diameter − D (inches)

 

 

 

 

 

 

 

 

 

 

 

Height

4 Inch

5 Inch

6 Inch

7 Inch

 

 

 

 

 

 

 

 

 

H

 

 

Appliance Input Rating in Thousands of Btu Per Hour

 

 

(feet)

 

 

 

 

 

 

 

 

 

FAN + FAN

FAN + NAT

FAN + FAN

 

FAN + NAT

FAN + FAN

FAN + NAT

FAN + FAN

FAN + NAT

 

 

 

 

 

 

 

 

 

 

 

 

6

NA

78

NA

 

113

200

158

304

244

8

NA

87

NA

 

126

218

173

331

269

10

NA

94

163

 

137

237

189

357

292

15

121

108

189

 

159

275

221

416

343

 

 

 

 

 

 

 

 

 

 

20

131

118

208

 

177

305

247

463

383

 

 

 

 

 

 

 

 

 

 

30

145

132

236

 

202

350

286

533

446

Page 21

Page 21
Image 21
Lennox International Inc Elite Series Gas Furnace Upflow/Horizontal Air Discharge, EL280UH installation instructions 130

Elite Series Gas Furnace Upflow/Horizontal Air Discharge, EL280UH specifications

Lennox International Inc. has established itself as a leader in the heating and cooling industry, providing innovative solutions for both residential and commercial environments. One of their notable products is the EL280UH, a high-efficiency gas furnace designed to offer optimal comfort while minimizing energy consumption.

The EL280UH operates with an impressive Annual Fuel Utilization Efficiency (AFUE) rating of up to 80%. This efficiency rating means that 80% of the fuel consumed is converted into heat, making it a cost-effective option for homeowners looking to reduce their utility bills. The furnace’s design is tailored to deliver reliable warmth during the coldest months, ensuring a comfortable home environment.

A key feature of the EL280UH is its two-stage heating capability. This technology allows the furnace to operate at a lower heating output for less demanding conditions, which not only conserves energy but also helps maintain a more consistent temperature in the home. When the demand for heat increases, the furnace can seamlessly transition to its higher output setting, providing quick and effective heating when needed.

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The furnace also includes an advanced control system that integrates easily with smart home technology. This feature enables users to monitor and adjust their heating settings from anywhere using a smartphone app, creating added convenience and control over home heating.

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In summary, the Lennox EL280UH furnace stands out for its high efficiency, advanced features, and commitment to user safety. Its two-stage heating capability, quiet operation, and smart home integration make it an excellent choice for homeowners looking to enhance their heating system while being energy-conscious. The EL280UH embodies Lennox's dedication to quality and innovation, ensuring that comfort and efficiency go hand in hand.