Appliance details
FOR NATURAL GAS
Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure drop of 0.3 in Water Column (0.75mbar).(Based on a 0.60 Specific Gravity Gas) Btu numbers given in thousands.
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| Follow boxed numbers for piping just one 250 SX | |||||||
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| (example: ¾” B.I. Natural Gas pipe for 20 ft (6.1m). | |||||||
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| will handle 190,000 btu’s (55.7 kWh). For multiple | |||||||
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| appliances combine the total btu input load and then | |||||||
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| refer to applicable chart below. |
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Nominal |
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Iron |
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| Length of Black Iron Pipe, Feet |
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Pipe | Internal |
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Size, | Diameter |
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inches | inches | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 125 | 150 | 175 | 200 | ||
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1/4 |
| 0.364 | 32 | 22 | 18 | 15 | 14 | 12 | 11 | 11 | 10 | 9 | 8 | 8 | 7 | 6 | |
3/8 |
| 0.493 | 72 | 49 | 40 | 34 | 30 | 27 | 25 | 23 | 22 | 21 | 18 | 17 | 15 | 14 | |
1/2 |
| 0.622 | 132 | 92 | 73 | 63 | 56 | 50 | 46 | 43 | 40 | 38 | 34 | 31 | 28 | 26 | |
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3/4 |
| 0.824 | 278 | 190 | 152 | 130 | 115 | 105 | 96 | 90 | 84 | 79 | 72 | 64 | 59 | 55 | |
1 |
| 1.049 | 520 | 350 | 285 | 245 | 215 | 195 | 180 | 170 | 160 | 150 | 130 | 120 | 110 | 100 | |
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1 1/4 |
| 1.380 | 1050 | 730 | 590 | 500 | 440 | 400 | 370 | 350 | 320 | 305 | 275 | 250 | 225 | 210 | |
1 1/2 |
| 1.610 | 1600 | 1100 | 890 | 760 | 670 | 610 | 560 | 530 | 490 | 460 | 410 | 380 | 350 | 320 | |
2 |
| 2.067 | 3050 | 2100 | 1650 | 1450 | 1270 | 1150 | 1050 | 990 | 930 | 870 | 780 | 710 | 650 | 610 | |
2 1/2 |
| 2.469 | 4800 | 3300 | 2700 | 2300 | 2000 | 1850 | 1700 | 1600 | 1500 | 1400 | 1250 | 1130 | 1050 | 980 | |
3 |
| 3.068 | 8500 | 5900 | 4700 | 4100 | 3600 | 3250 | 3000 | 2800 | 2600 | 2500 | 2200 | 2000 | 1850 | 1700 | |
4 |
| 4.026 | 17,500 | 12,000 | 9,700 | 8,300 | 7,400 | 6,80 | 6,200 | 5,800 | 5,400 | 5,100 | 4,500 | 4,100 | 3,800 | 3500 |
FOR LP GAS
Maximum Capacity of Pipe in Thousands of BTU per Hour of Undiluted Petroleum Gases (at 11 inches Water Column Inlet Pressure) (Based on a Pressure Drop of 0.5 Inch Water Column).
Maximum Capacity of
corrugated) Tubing in Thousands of BTU per Hour
of Undiluted Liquefied Petroleum Gases (at 11
inches Water Column Inlet Pressure).
(Based on a Pressure Drop of 0.5 Inch Water Column)
*Source National Fuel Gas Code NFPA 54, ANSI Z223.1 - No Additional Allowance is necessary for an ordinary number of fittings
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| Iron Pipe |
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| Black Iron Pipe |
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| Size, |
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| Length of Pipe, Feet |
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| Inches | 10 |
| 20 |
| 30 |
| 40 |
| 50 | 60 | 70 |
| 80 |
| 90 |
| 100 | 125 | 150 |
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| 1/2 |
| 275 | 189 |
| 152 | 129 | 114 | 103 | 96 |
| 89 |
| 83 |
| 78 | 69 | 63 |
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| 3/4 |
| 567 | 693 |
| 315 | 267 | 237 | 217 | 196 | 185 |
| 173 | 162 | 146 | 132 |
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| 1 |
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| 107 | 732 |
| 590 | 504 | 448 | 409 | 378 | 346 |
| 322 | 307 | 275 | 252 |
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| 1 1/4 |
| 220 | 149 |
| 121 | 103 | 913 | 834 | 771 | 724 | 677 | 630 | 567 | 511 |
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| 1 1/2 |
| 330 | 229 |
| 185 | 155 | 141 | 127 | 118 | 108 | 102 | 976 | 866 | 787 |
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| 2 |
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| 622 | 433 |
| 346 | 299 | 264 | 239 | 220 | 204 | 192 | 1811 | 1606 | 1496 |
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| Copper |
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Outside |
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| Length of Tubing, Feet |
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Diameter, |
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Inch | 10 |
| 20 | 30 |
| 40 |
| 50 | 60 |
| 70 |
| 80 |
| 90 | 100 |
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3/8 | 39 |
| 26 | 21 |
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1/2 | 92 |
| 62 | 50 |
| 41 |
| 37 | 35 |
| 31 |
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| 27 | 26 |
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| 5/8 |
| 199 |
| 131 | 107 | 90 |
| 79 | 72 |
| 67 |
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| 59 | 55 |
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| 3/4 | 329 |
| 216 | 181 |
| 145 | 131 | 121 | 112 | 104 |
| 95 | 90 |
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| 7/8 | 501 | 346 | 277 |
| 233 | 198 | 187 | 164 | 155 | 146 | 138 |
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Fig. 22
16 | 6 720 607 057 |