BOILER BOOK CFC-E ENGINEERING DATA
31
Figure 24. Gas Header Piping
Table 14. Model CFC-E Minimum and Maximum Gas Pressure
*Overpressure protection required when room supply gas pressure is greater than maximum gas train
pressure rating.
Boiler Model
Minimum pressure required at gas train
connection (inches Water Column)
Max. pressure
(without step-down
regulator)
Maximum gas train pressure rating*
Natural Gas LP Gas UL cUL/CSA
500 7” 11”
14” WC
(1/2 psig)
1 psig 1/2 psig
750 7” 11”
1000 7” 11”
1500 7” 11”
2000 7” 11”
Re gula to r
Header Pipe
Meter
Gas Header Piping, Typical
Gas Strainer
Re li e f Valve
See Note 5
Manual Shut Off
See Note 1
NOTES:
1. Dedicated gas pressure regulator recommended for each boiler.
2. Refer to local fuel gas codes when applicable.
3. Header to be sized for room capacity.
4. Provision required for measuring gas supply pressure at boiler.
5. Relief valve required if gas supply pressure >1 psig.
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