When hanging flexible duct, the hanging material should be at least:
A) 1 in wide and spaced no further than every 5 ft.
B) 2 in wide and spaced no further than every 12 ft.
C) 1 in wide and spaced no further than every 12 ft.
D) 2 in wide and spaced no further than every 5 ft.
[Ques. 2] A duct system that allows control over different portions of the house using one unit and a single duct system is called a:
A) Zone system. B) Radial system. C) Multistage system. D) Cascade system.
[Ques. 3] Which of the following is an example of baseline condenser data?
A) Amp draw for the system B) Suction line temperature
C) Temperature of air in D) Discharge pressure
[Ques. 4] Which of the following statements about zoned systems is correct?
A) Zoned systems are only used for commercial buildings.
B) Individual zone temperature control is not available in zoned systems.
C) Water flow in zoned systems is controlled by a motorized valve.
D) One thermostat controls all the motorized valves in the system.
[Ques. 5] Unlike other types of systems, geothermal systems do not lose capacity as the air temperature drops because:
A) They extract air from the ground, which is at a stable temperature.
B) They extract air from the ground, which is at a variable temperature.
C) They extract heat from the ground, which is at a stable temperature.
D) They extract water from the ground, which is at a variable temperature.
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