What is the primary purpose of the low-pressure control in a heat pump?
a. Cycles compressor off on low loads
b. Prevents refrigerant floodback
c. Protects against loss of charge
d. Prevents outdoor coil icing
Question 2
Which of the following statements is correct?
a. Electronic defrost controls use logic to determine the need for a defrost cycle.
b. Mechanical defrost controls are significantly cheaper than electronic models.
c. A defrost cycle starts as soon as the coil temperature is below the setpoint.
d. Mechanical defrost controls base defrost cycles on time alone.
Gerotor-type oil pump driven by the crankshaft.
The thymus, a primary lymphoid organ where T cells mature.
Cycles in ice sheet growth and decay
Blood pressure is controlled by the cardiovascular and kidney systems
Primary Active Transport
Birth Control Methods and Abortion