Question

If a technician needs to read the refrigerant pressure of a window unit, they must: a) Use a specialized thermal scanner b) Refer to the system's maintenance manual c) Install a new pressure gauge d) Attach a gauge manifold set to the unit

Answer 1

To read the refrigerant pressure in a window unit, a technician needs to attach a gauge manifold set to the unit. This is a specialized sort of manometer used in HVAC systems for diagnostics and maintenance.

Step-by-step explanation:

In order to read the refrigerant pressure of a window unit, a technician must use option (d) i.e. they must attach a gauge manifold set to the unit. This method is similar to how the pressure of gases is measured in the laboratory by using a manometer, as in the references provided.

Manometers are efficient in measuring the pressure of gases and a gauge manifold set is essentially a more specialized type of manometer, which can be used to measure refrigerant pressure in HVAC systems. The use of a gauge manifold set allows the technician to read the high side (discharge) and low side (suction) pressure of the system, thereby enabling diagnosis and maintenance work related to refrigerant pressure.

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