BOILER BOOK CFC-E ENGINEERING DATA
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Figure 23. Gas Piping Schematic
Consideration of volume and pressure requirements must be given when selecting gas supply piping.
Connections to the burner gas train must include a union so that the burner may be opened for
inspection and maintenance.
A. Gas supply connection is at the rear of the boiler near the top. To permit burner opening, gas
piping must not traverse the top of the boiler.
B. Table 14 shows the gas pressure required at the inlet of the gas line. Note: a pressure
regulator is not furnished and if gas pressure exceeds 14" W.C. a pressure regulator is
required.
C. Table 15 shows the correction factors for gas pressure at elevations at 2000 feet and higher
above sea level.
Same or larger than boiler gas connection size
Drip leg required for any vertical run of piping
Relief Valve (NOTE 5)
Gas header - size for boiler room
capacity and to minimize pressure loss
Regulator
(NOTE 1)
Manual Shutoff
Strainer
Manual Shutoff
= optional or by others