When changing the superheat setting on a TXV, _____.
a. the system must be shut down
b. the system must be in operation
c. completely remove the packing nut from the adjusting stem
d. close off the equalizer line until the adjustments are complete
Question 2
Which of the following statements is true regarding TXV selection?
a. Selecting by the nominal valve capacity is always best.
b. The liquid refrigerant temperature entering the valve has no effect.
c. The pressure drop through the valve has a significant effect on its capacity.
d. The desired evaporator temperature has no effect on pressure drop through the valve.