Burner and Fuel System
2-10
750-368
CBEX Elite 100-1200 HP
damper are positioned throughout the boiler’s firing range. When properly adjusted, the combustion settings will
maintain the correct air/fuel ratio while responding to changing load conditions.
During burner operation, the process variable (steam pressure or water temperature) is compared to the setpoint
to determine the control signal sent to the actuators.
Manual burner operation is possible through the Hawk control system. Manual mode is used primarily for initial
setting or subsequent checking of fuel input. Normal operation should be with the manual-automatic selector in
the “automatic” position.
A feature designed into the control program maintains the boiler in the low-fire position during ignition and keeps
it there until the main flame is established.
2.12 — Ultra Low NOx Systems
For Ultra low NOx (<15 PPM) operation refer to the NTI burner manual 750-220.
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