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Steam Purge System
The steam purge is a system that helps prevent the burner from shutting off. The burner will shut of when the
boiler pressure reaches 1 psi higher than the target (Default target =12 psi | Default shutdown =13 psi). The
steam purge valve opens to relieve pressure in the boiler at the target steam rate (12 psi default).
The steam purge is active at 50% and above on the master steam rate, and it is deactivated when the master steam
rate is below 50%. It is deactivated on lower rates to preserve efficiency and it is often not needed.
The steam purge valve most commonly opens during initial startup to purge oxygen, and when turning at the
end of a windrow when steam is turned off.
The steam purge valve is open when the
“Steam Purge” indicator is green.
The steam purge system turns on automatically at 50% and
above. It turns off automatically at 49% and below.
The steam purge system can be manually activated and
deactivated. When active, it will open the steam purge valve
when the boiler reaches 12 psi.
OFF
ON
