Connecting The Gas Supply; Gas Pipe Sizing Tables; Natural Gas - Vesta VH-150 Installation Manual

Connecting the Gas Supply

Gas Pipe Sizing Tables

Gas pipe sizing is based on the gas type, supplied gas pressure, pressure drop in the system, and gas line type. The tables below are for reference
only (when the gas supply is piping straight to the water heater with no connections to any other gas appliances). For gas pipe sizing, refer to the
latest National Fuel Gas code, NFPA 54 and consult the gas pipe manufacturer for actual gas pipe capacities.

Natural gas

Maximum Capacity of Natural Gas Based on a 0.60 specific gravity at a 0.5" WC pressure drop.
Page Size
10'
Length
372
3/4"
1" 702
1441
1 1/4"
2158
1 1/2"
4155
2"
Liquid propane gas
Maximum Capacity of propane (LP) Gas Based on 11" WC supply pressure at a 1.0" WC pressure drop.
Page Size
10'
Length
3/4" 567
1" 1071
2205
1 1/4"
3307
1 1/2"
2" 6221
20' 30' 40' 50'
255 205 175 156
482 387 331 293
990 795 680 603
1483 1191 1019 903
2856 2293 1963 1740
20' 30' 40' 50'
393 315 267 237
732 590 504 448
1496 1212 1039 913
2299 1858 1559 1417
4331 3465 2992 2646
kBTU/H of Natural Gas
60' 70' 80' 90'
142 130 121 114
266 245 228 213
546 503 468 439
819 753 701 658
1576 1450 1349 1266
kBTU/H of Propane Gas
60' 70' 80' 90'
217 196 185 173
409 378 346 322
834 771 724 677
1275 1181 1086 1023
2394 2205 2047 1921
100' 125' 150' 200'
107 95 86 74
202 179 162 139
415 367 332 285
621 550 499 427
1195 1060 960 822
100' 125' 150' 200'
162 146 132 112
307 275 252 213
630 567 511 440
976 866 787 675
1811 1606 1496 1260
Connecting the Gas Supply
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