1.
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Review the refrigeration cycle using the basic components and explain
their functions. (I)
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2.
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Explain the factors that lead to human comfort including the rate at
which the body produces heat, body temperature, temperature-humidity
relationships and type of clothing. (II)
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3.
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Define specific terms used in psychometrics and coordinate points on
the psychometric chart to conditions of a specific residence. (III)
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4.
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List the components effecting cooling load and explain how they
contribute to the total cooling load. (IV)
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5.
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Identify the specific types and styles of cooling equipment. (V)
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6.
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Explain the operation of major types of compressors used in air
conditioning systems. (IV)
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7.
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Identify and explain the operation of the fixed bore and thermostatic
metering devices. (VII)
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8.
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Explain purposes of forced-air systems and list the components. (VIII)
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9.
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Identify and explain the operation of safety controls including
thermostats, relays, contactors, high and low pressure controls,
overloads and time delay relays. (IX)
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10.
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Explain the operation of the compressor starting component for
Permanent Split Capacitor (PSC) motors. (X)
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11.
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Compare and contrast operating conditions above/below design
conditions. (XI)
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12.
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Explain how a heat pump differs from an air conditioner. (XII)
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13.
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List the types of heat pumps and explain the heat source and the heat
rejection medium. (XIII)
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14.
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Explain the operation of metering devices including capillary tube,
thermostatic expansion valve, electronic expansion valve and orifice
metering devices. (XIV)
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15.
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Define terms associated with heat pumps including coefficient of
performance, balance point, auxiliary heat and ambient temperature.
(XV)
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16.
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Explain the operation of the controls used on heat pumps to include,
but not limited to: low voltage thermostats, relays, heating controls,
defrost timer and defrost termination thermostat. (XVI)
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