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Gas Requirements
37
M414905
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
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
Appliances
Total Btu/hr
25 feet
(7.63 m)
50 feet
(15.25 m)
75 feet
(22.88 m)
100 feet
(30.50 m)
125 feet
(38.13 m)
150 feet
(45.75 m)
Based on 0.3 in. Water Column Pressure Drop for Length Given
Sizes shown in inches (mm)
100,000
120,000
140,000
160,000
180,000
200,000
300,000
400,000
500,000
600,000
700,000
800,000
900,000
1,000,000
1,100,000
1,200,000
1,300,000
1,400,000
1,500,000
1,600,000
1,700,000
1,800,000
1,900,000
2,000,000
2,200,000
2,400,000
2,600,000
2,800,000
3,000,000
0.75 (19.05)
0.75 (19.05)
0.75 (19.05)
0.75 (19.05)
1 (25.40)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
0.75 (19.05)
1 (25.40)
1 (25.40)
1 (25.40)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
1 (25.40)
1 (25.40)
1 (25.40)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3.5 (88.90)
1 (25.40)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3.5 (88.90)
3.5 (88.90)
3.5 (88.90)
1 (25.40)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3.5 (88.90)
3.5 (88.90)
3.5 (88.90)
3.5 (88.90)
3.5 (88.90)
1 (25.40)
1 (25.40)
1.25 (31.75)
1.25 (31.75)
1.25 (31.75)
1.5 (38.10)
1.5 (38.10)
2 (50.80)
2 (50.80)
2 (50.80)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
2.5 (63.50)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3 (76.20)
3.5 (88.90)
3.5 (88.90)
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 5