PENSOTTI PCI 18, Instruction Manual

Page: 28 / 70

INSTALLATION INSTRUCTIONS
25
Natural Gas Pipe Sizing Chart
Length of
Pipe In Feet
Size of Schd. 40 Black Iron Pipe in Inches
1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
10 108 230 387 793 1237 2259
20 75 160 280 569 877 1610
30
61 129 224 471 719 1335
40 52 110 196 401 635 1143
50
46 98 177 364 560 1041
60 42 89 159 336 513 957
70
38 82 149 317 476 896
80 36 76 140 239 443 840
90
33 71 133 275 420 793
100 32 68 126 266 411 775
125 28 60 117 243 369 700
Natural Gas flow is given in thousands of BTU/hr. - One cubic foot of natural gas = 1000 BTU
Nominal pressure at the burner for Natural Gas is 3.5" of water column. (Typical machine supply 5"-7")
Pipe length must include additional length for all fittings. Add approximately 5 feet of pipe per fitting
Natural Gas Example: A machine with a burner that requires 440,000 BTU would need a 1 -1/4" pipe for
a 20' long run.
Liquid Propane Gas Pipe Sizing Chart
Length of
Pipe in Feet
Size of Schd. 40 Black Iron Pipe in Inches
1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
10 275 567 1071 2205 3307 6221
20 189 393 732 1496 2299 4331
30
152 315 590 1212 1858 3465
40 129 267 504 1039 1559 2992
50 114 237 448 913 1417 2646
60 103 217 409 834 1275 2394
80
89 185 346 724 1086 2047
100 78 162 307 630 976 1811
125 69 146 275 567 866 1606
150 63 132 252 511 787 1496
LP Gas flow is given in thousands of BTU/hr. - One cubic foot of LP gas - 2516 BTU
This chart refers to low pressure LP, after regulation Standard nominal pressure at the burner for
Liquid Propane Gas is 11" of water column.
Pipe length must include additional length for all fittings. Add approximately 5 feet of pipe per fitting
LP Example: A machine with a burner that requires 440,000 BTU would need a 1" pipe for a 20' long run.