🔍 Key Concepts

• Automatic combustion control in auxiliary boilers • How a flame scanner (flame detector) works to prove flame presence • Effects of fuel temperature and viscosity on combustion and ignition

💭 Think About

• Which of these options would prevent the burner management system from "seeing" a good flame, even if the burner is actually trying to ignite? • Which choices would more likely affect combustion quality or firing rate rather than stop ignition from happening at all? • In an automatic system, what condition would cause the control logic to lock out the burner and indicate an ignition failure?:

✅ Before You Answer

• Identify which item directly interferes with the flame detection device used for automatic control. • Decide which fuel properties (temperature/viscosity) would normally help atomization and ignition rather than stop them completely. • Ask yourself if high steam pressure would be a result of good firing or a cause of ignition failure in an automatic boiler.