Gas Pipe Size Required for 1000 Btu Natural Gas (Standard Conditions) at Upstream Pressure — 2 ± 0.4 psi
[138 ± 27.6 mbar, 13.7 ± 2.74 kPa] Water Column Pressure
GasAp-
pliances
Total
Btu/hr.
Equivalent Length
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 1 psi Pressure Drop for Length Given
Sizes shown in inches [mm]
2,200,000 0.75 [19.05] 1 [25.40] 1 [25.40] 1.25 [31.75] 1.25 [31.75] 1.25 [31.75]
2,400,000 1 [25.40] 1 [25.40] 1 [25.40] 1.25 [31.75] 1.25 [31.75] 1.5 [38.10]
2,600,000 1 [25.40] 1 [25.40] 1.25 [31.75] 1.25 [31.75] 1.25 [31.75] 1.5 [38.10]
2,800,000 1 [25.40] 1 [25.40] 1.25 [31.75] 1.25 [31.75] 1.25 [31.75] 1.5 [38.10]
3,000,000 1 [25.40] 1 [25.40] 1.25 [31.75] 1.25 [31.75] 1.25 [31.75] 1.5 [38.10]
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.
Table 6
High Altitude Orifice Sizing
For proper operation at altitudes above 2000 feet [610 meters],
the gas orifice size must be reduced to ensure complete combus-
tion. Refer to Table 7 .
For CE models, consult local gas supplier.
Gas Requirements
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48 Part No. 70458101ENR10