Appendix A Sizing Gas Piping - Thermal Solutions Arctic Installation & Operation Manual

Form: 2435
Revision: 8
Arctic Installation and Operation Manual Date: 9-19-2016

Appendix A Sizing Gas Piping

Design the gas piping system to provide an adequate gas supply to the boiler. Refer to Table 4 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 17 for
maximum capacity of schedule 40 pipe. Table 18 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
19 and multiplied by the "Capacity in Cubic Feet of Gas Per Hour" on Table 17. 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.
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