Why should the TXV be adjusted to maintain a low superheat?
What will be an ideal response?
To ensure that the majority of the evaporator surface is being used, giving a higher net refrigeration effect and higher capacities and efficiencies.
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Which of these is the least useful snap and grid setting combination:
a. Snap = 1.0, grid = 1.0 b. Snap = 1.0, grid = 10.0 c. Snap = 1.0, grid = 2.0 d. Snap = 1.0, grid = .5
The typical power supply for a residential electric furnace is _____.
a. 24V b. 120/208V c. 208/240V d. 500V
Airflow pattern must be taken into account so that the sensor is:
A) Mounted downstream from the potential leak source. B) Mounted near the door by the potential leak source. C) Mounted upstream from the potential leak source. D) Mounted on the ceiling by the potential leak source.
After diagnosing a defective compressor, the technician should:
A) Rebuild the compressor in the field. B) Add a hard start kit to improve compressor performance. C) Determine why the original compressor failed. D) Add refrigerant to improve compressor performance.