Unburned fuel oil that is heated in a furnace will ___.

A(n) ___ is a combustion control system that controls the amount of steam produced by changing the burner firing rate.

A major source facility is a facility that emits less than 10 tons per year of any single air toxic and less than 25 tons per year of any combination of air toxics.

A ___ provides access inside the water side of a boiler for inspection, sight, or cleaning.

A(n) ___ is a combustion control system that controls the amount of steam produced by changing the burner firing rate.

A ___ provides access inside the water side of a boiler for inspection, sight, or cleaning.

Piping system designs vary depending on the degree of temperature control desired and the specific application.

A deaerator is a boiler water treatment accessory that heats feedwater to the temperature of saturated steam at the pressure within a pressure vessel.

A deaerator is a boiler water treatment accessory that heats feedwater to the temperature of saturated steam at the pressure within a pressure vessel.

___ certification is required for technicians servicing low-pressure appliances that use a refrigerant that boils above 50°F at atmospheric pressure.