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59

Competency and Task List

Oil Heat

Students must have

knowledge of oil

heating systems,

their components,

and be able to

demonstrate

proficiency in:

Describing and explaining the function of upflow, downflow, and horizontal furnaces

Describing Combustion Theory and Heating Fuels

Describing the Properties of Various Heating Fuels

Defining BTU

Defining AFUE

Describing and using the sensible heat formula

Describing the principles of humidification

Describing the principles of dehumidification

Explaining the BTU content and specific gravities of various fuel oils

Describing the oil pressures (and vacuum levels) on an operating oil-fired heating system

Measuring the oil pressures (and vacuum levels) on an operating oil-fired heating system

Measuring the flue gas temperatures of furnaces

Determining the amount of combustion air required to safely burn oil in a furnace

Defining primary and secondary air

Differentiating between primary air and excess air

Describing the causes of burner “Flashback”

Describing the causes of a lifting flame.

Stating the reason for appropriate polarity wiring on solid state circuits

Stating the generally accepted standard oil pressure for a residential furnace

Describing, explaining the function, evaluating, cleaning, and replacing (when feasible) of

the following components:

Oil valves used with residential furnaces

oil pressure regulating valves

Orifice

Heat exchanger

Flue baffles

Fuel oil pump

Cadmium sulfide cell

Burner primary safety control

Ignition module

Spark igniter

High voltage ignition transformer

Flame sensor

Combination fan and limit switch

Door safety switch

Blower motor relay

Vent blower motor

Vent pressure switch

Vent motor relay

Single stage thermostat

Dual stage thermostat

Run and start capacitor

Describing a blower housing cut-off plate

Identifying the different types of venting systems

Sizing and installing the venting systems

Installing fuel lines

Describing the purpose and operation of delayed action solenoid valve