In the heating industry, gas piping is often overlooked for any number of reasons. It is the responsibility of the designer or engineer to size and layout the piping plan correctly; the installer to install the system as designed; and the service technician to consider improper gas piping when troubleshooting and servicing.
Taken from "Gas Heating", by Jason Obrzut, CMHE. © 2019 by ESCO INSTITUTE. Used by permission. www.escogroup.org/800-726-9696.