BOILER BOOK CFC-E
ENGINEERING DATA
30
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
Summary of Contents for CFC-E 1000
Page 1: ...CFC E ClearFire Condensing Boiler Boiler Book 02 2018...
Page 52: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 52 Figure 38 Primary Secondary Single Boiler...
Page 53: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 53 Figure 39 Primary Secondary Two Boilers...
Page 54: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 54 Figure 40 Primary Secondary Three Boilers...
Page 55: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 55 Figure 41 Primary Variable Flow Single Boiler...
Page 56: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 56 Figure 42 Primary Variable Flow Two Boilers...
Page 57: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 57 Figure 43 Primary Variable Flow Three Boilers...
Page 60: ...BOILER BOOK CFC E EXAMPLE SYSTEM SCHEMATICS 60...
Page 61: ...BOILER BOOK CFC E e mail info cleaverbrooks com Web Address http www cleaverbrooks com...
