Appendix A: Sizing Gas Piping; Table 32: Maximum Gas Capacity Of Schedule - Thermal Solutions ARCTIC Series Installation & Operation Manual

Appendix A: Sizing Gas Piping
Design the gas piping system to provide an adequate gas supply to the boiler. Refer to Table 18 for minimum
and maximum gas supply pressures and boiler capacities. Also consider existing and expected future gas utilizing
equipment (i.e., water heater, cooling equipment). Refer to Table 32 for maximum capacity of schedule 40 pipe.
Table 33 lists equivalent pipe length for standard fittings. Given the specific gravity of gas at the boiler's location,
a correction factor can be found on Table 34 and multiplied by the "Capacity in Cubic Feet of Gas Per Hour" in
Table 32. For gas piping material other than schedule 40 pipes, refer to the National Fuel Gas Code, NFPA 54/
ANZI Z223.1 and/or CAN/CGA B149 Installation codes. Use methods and materials in accordance with Local
Codes and requirements of gas supplier. In the absence of such requirement follow National Fuel Gas Codes,
NFPA /ANSI Z 223.1 and/or CAN/CGA B149 Installation Codes.
Pipe Length
in Equivalent
¾
Feet
10 273
20 188
30 151
40 129
114
50
60 104
70 95
80 89
90 83
100 79
125 70
150 63
58
175
200 54
Based on gas pressures less than 2 psig and a pressure drop of 3.0 iwc and 0.6 specific gravity.
60
Thermal Solutions, 1175 Manheim Pike, Lancaster, PA 17601 Website: www.thermalsolutions.com
Table 32: Maximum Gas Capacity Of Schedule 40 Pipe
1 1-1/4
514 1060
353 726
284 583
243 499
215 442
195 400
179 368
167 343
157 322
148 304
131 269
119 244
109 224
102 209
Phone: 717-239-7642 Fax: 877-501-5212 Email: sales@thermalsolutions.com
Pipe Size (NPT)
1-1/2 2
1580 3050
1090 2090
873 1680
747 1440
662 1280
600 1160
552 1060
514 989
482 928
455 877
403 777
366 704
336 648
313 602
2-1/2 3
4860 8580
3340 5900
2680 4740
2290 4050
2030 3590
1840 3260
1690 3000
1580 2790
1480 2610
1400 2470
1240 2190
1120 1980
1030 1820
960 1700
4
17500
12000
9660
8270
7330
6640
6110
5680
5330
5040
4460
4050
3720
3460