How can you determine the amount of airflow in a heat pump?
A) Compare rate of airflow against external static pressure.
B) Operate the blower and read the external temperature.
C) Measure air temperature, amperage, and voltage, and calculate the airflow.
D) Align the thermometer with the heat strips and note the temperature.
C
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Solid-state reduced-voltage controllers provide smooth, stepless acceleration of a motor through the use of silicon-controlled _____________________.
Fill in the blank(s) with the appropriate word(s).
The short cutback for a 6 × 6, 30-degree, Schedule 40 lateral would be _____ inch(es).
a. 7/8 b. 1-3/8 c. 2 d. 3
When should the service technician check for technical service bulletins?
A) As soon as the work order is received with the customer complaint shown B) Before performing a visual inspection C) After checking for any stored diagnostic trouble codes D) After making the repair
After leaving the unit, condensate drain lines should be run:
A) With a maximum rise of 1/8 inch per foot. B) With a minimum fall of at least 1/8 inch per foot. C) To the nearest plumbing waste vent. D) Level for a neat appearance.