Gas Requirements

Gas Pipe Size Required for 1000 Btu Natural Gas — 0.64 Specific Gravity at 7 ± 1.5 inches (17.4 ± 4 mbar, 1.74 ± 0.37 kPa) Water Column Pressure

 

 

 

 

Equivalent Length

 

 

 

 

 

 

 

 

 

 

 

 

Gas

25 feet

 

50 feet

75 feet

100 feet

125 feet

 

150 feet

(7.63 m)

 

(15.25 m)

(22.88 m)

(30.50 m)

(38.13 m)

 

(45.75 m)

Appliances

 

 

 

 

 

 

 

 

 

Based on 0.3 in. Water Column Pressure Drop for Length Given

 

Total Btu/hr

 

 

 

 

 

 

Sizes shown in inches (mm)

 

 

 

 

 

 

 

 

 

 

 

100,000

0.75 (19.05)

 

0.75 (19.05)

1 (25.40)

1 (25.40)

1 (25.40)

 

1 (25.40)

120,000

0.75 (19.05)

 

1 (25.40)

1 (25.40)

1 (25.40)

1 (25.40)

 

1 (25.40)

140,000

0.75 (19.05)

 

1 (25.40)

1 (25.40)

1 (25.40)

1 (25.40)

 

1.25 (31.75)

160,000

0.75 (19.05)

 

1 (25.40)

1 (25.40)

1.25 (31.75)

1.25 (31.75)

 

1.25 (31.75)

180,000

1 (25.40)

 

1 (25.40)

1 (25.40)

1.25 (31.75)

1.25 (31.75)

 

1.25 (31.75)

200,000

1 (25.40)

 

1 (25.40)

1.25 (31.75)

1.25 (31.75)

1.25 (31.75)

 

1.5 (38.10)

300,000

1 (25.40)

 

1.25 (31.75)

1.25 (31.75)

1.5 (38.10)

1.5 (38.10)

 

1.5 (38.10)

400,000

1.25 (31.75)

 

1.25 (31.75)

1.5 (38.10)

1.5 (38.10)

1.5 (38.10)

 

2 (50.80)

500,000

1.25 (31.75)

 

1.5 (38.10)

1.5 (38.10)

2 (50.80)

2 (50.80)

 

2 (50.80)

600,000

1.5 (38.10)

 

1.5 (38.10)

2 (50.80)

2 (50.80)

2 (50.80)

 

2 (50.80)

700,000

1.5 (38.10)

 

2 (50.80)

2 (50.80)

2 (50.80)

2 (50.80)

 

2.5 (63.50)

800,000

1.5 (38.10)

 

2 (50.80)

2 (50.80)

2 (50.80)

2.5 (63.50)

 

2.5 (63.50)

900,000

2 (50.80)

 

2 (50.80)

2 (50.80)

2.5 (63.50)

2.5 (63.50)

 

2.5 (63.50)

1,000,000

2 (50.80)

 

2 (50.80)

2 (50.80)

2.5 (63.50)

2.5 (63.50)

 

2.5 (63.50)

1,100,000

2 (50.80)

 

2 (50.80)

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

 

2.5 (63.50)

1,200,000

2 (50.80)

 

2 (50.80)

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

 

2.5 (63.50)

1,300,000

2 (50.80)

 

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

 

3 (76.20)

1,400,000

2 (50.80)

 

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

3 (76.20)

 

3 (76.20)

1,500,000

2 (50.80)

 

2.5 (63.50)

2.5 (63.50)

2.5 (63.50)

3 (76.20)

 

3 (76.20)

1,600,000

2 (50.80)

 

2.5 (63.50)

2.5 (63.50)

3 (76.20)

3 (76.20)

 

3 (76.20)

1,700,000

2 (50.80)

 

2.5 (63.50)

2.5 (63.50)

3 (76.20)

3 (76.20)

 

3 (76.20)

1,800,000

2.5 (63.50)

 

2.5 (63.50)

3 (76.20)

3 (76.20)

3 (76.20)

 

3 (76.20)

1,900,000

2.5 (63.50)

 

2.5 (63.50)

3 (76.20)

3 (76.20)

3 (76.20)

 

3 (76.20)

2,000,000

2.5 (63.50)

 

2.5 (63.50)

3 (76.20)

3 (76.20)

3 (76.20)

 

3.5 (88.90)

2,200,000

2.5 (63.50)

 

3 (76.20)

3 (76.20)

3 (76.20)

3.5 (88.90)

 

3.5 (88.90)

2,400,000

2.5 (63.50)

 

3 (76.20)

3 (76.20)

3 (76.20)

3.5 (88.90)

 

3.5 (88.90)

2,600,000

2.5 (63.50)

 

3 (76.20)

3 (76.20)

3.5 (88.90)

3.5 (88.90)

 

3.5 (88.90)

2,800,000

2.5 (63.50)

 

3 (76.20)

3 (76.20)

3.5 (88.90)

3.5 (88.90)

 

3.5 (88.90)

3,000,000

2.5 (63.50)

 

3 (76.20)

3.5 (88.90)

3.5 (88.90)

3.5 (88.90)

 

4 (101.60)

 

 

 

 

 

 

 

 

 

For L.P. Gas, correct the total Btu/hr by multiplying it by 0.6. The answer is the equivalent Btu on the above chart.

The installation must conform with local codes or, in the absence of local codes:

•with the latest edition of the “National Fuel Gas Code,” ANSI Z223.1/NFPA 54 in the U.S.A.,

•with CAN/CSA-B149.1 or Natural Gas and Propane Installation Code in Canada,

•and Australian Gas Association/Australian L.P. Gas Association requirements in Australia.

Table 7

70304601

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