NATE HEAT PUMP LATEST EXAMS CORE QUESTIONS
AND ANSWERS SURE A+
✔✔The best location for the outdoor section of an air to air heat pump is:
A: Where it gets the winter sun
B: Where it is sheltered from the sun's radiation
C: Where it never snows
D: Under the shelter of a porch - ✔✔A: Where it gets the winter sun
✔✔What may happen if the body of a reversing valve is slightly dented?
A: Nothing, as they are made to be very durable
B: The internal slide may stick
C: The valve may make noises from the gas trying to pass through partially open ports
D: Both b and c are correct - ✔✔D: Both b and c are correct
, ✔✔The reversing valve has 4 pipe connections. One pipe connection is on one side of
the valve and three pipe connections are on the opposite side. What is the center
connection on the side with three pipe connections?
A: Compressor suction connection
B: Compressor discharge connection
C: Outdoor coil connection
D: Indoor coil connection - ✔✔A: Compressor suction connection
✔✔The reversing valve has 4 pipe connections. One pipe connection is on one side of
the valve and three pipe connections are on the opposite side. What is the single
connection on the side opposite the three connections?
A: Compressor suction connection
B: Compressor discharge connection
C: Outdoor coil connection
D: Indoor coil connection - ✔✔B: Compressor discharge connection
✔✔Why are reversing valves pilot operated?
A: Because pilot operated valves use the differential pressure to operate the valve
ports instead of having a solenoid valve working against the head pressure
B: Because that is just the way they are made
C: Pilot operated valves are quiet
D: Heat pump reversing valves are NOT pilot operated! - ✔✔A: Because pilot operated
valves use the differential pressure to operate the valve ports instead of having a
solenoid valve working against the head pressure
✔✔Two technicians are working on a heat pump system and are preparing to evacuate
the system. Technician A says that in order to pull a good vacuum the reversing valve
needs to be switched on and off during the evacuation so air and moisture are not
trapped in the system. Technician B says technician A is incorrect and that the
reversing valve will not switch with the system in a vacuum anyway. Who is correct?
A: Technician A is correct
B: Technician B is correct
C: Both technicians A and B are correct
D: Both technicians A and B are incorrect - ✔✔B: Technician B is correct
✔✔Terminal "O" on a heat pump thermostat is used for:
A: Operating the reversing valve
AND ANSWERS SURE A+
✔✔The best location for the outdoor section of an air to air heat pump is:
A: Where it gets the winter sun
B: Where it is sheltered from the sun's radiation
C: Where it never snows
D: Under the shelter of a porch - ✔✔A: Where it gets the winter sun
✔✔What may happen if the body of a reversing valve is slightly dented?
A: Nothing, as they are made to be very durable
B: The internal slide may stick
C: The valve may make noises from the gas trying to pass through partially open ports
D: Both b and c are correct - ✔✔D: Both b and c are correct
, ✔✔The reversing valve has 4 pipe connections. One pipe connection is on one side of
the valve and three pipe connections are on the opposite side. What is the center
connection on the side with three pipe connections?
A: Compressor suction connection
B: Compressor discharge connection
C: Outdoor coil connection
D: Indoor coil connection - ✔✔A: Compressor suction connection
✔✔The reversing valve has 4 pipe connections. One pipe connection is on one side of
the valve and three pipe connections are on the opposite side. What is the single
connection on the side opposite the three connections?
A: Compressor suction connection
B: Compressor discharge connection
C: Outdoor coil connection
D: Indoor coil connection - ✔✔B: Compressor discharge connection
✔✔Why are reversing valves pilot operated?
A: Because pilot operated valves use the differential pressure to operate the valve
ports instead of having a solenoid valve working against the head pressure
B: Because that is just the way they are made
C: Pilot operated valves are quiet
D: Heat pump reversing valves are NOT pilot operated! - ✔✔A: Because pilot operated
valves use the differential pressure to operate the valve ports instead of having a
solenoid valve working against the head pressure
✔✔Two technicians are working on a heat pump system and are preparing to evacuate
the system. Technician A says that in order to pull a good vacuum the reversing valve
needs to be switched on and off during the evacuation so air and moisture are not
trapped in the system. Technician B says technician A is incorrect and that the
reversing valve will not switch with the system in a vacuum anyway. Who is correct?
A: Technician A is correct
B: Technician B is correct
C: Both technicians A and B are correct
D: Both technicians A and B are incorrect - ✔✔B: Technician B is correct
✔✔Terminal "O" on a heat pump thermostat is used for:
A: Operating the reversing valve
