Modifications such as adding a liquid-line solenoid at the ...

[cookcarl]

Modifications such as adding a liquid-line solenoid at the outdoor unit, using a hard shutoff thermal expansion valve at the evaporator, and adding a compressor hard-start kit are recommended when:
 
  A) The refrigerant line length is over 40 ft. B) The system is converted from 22 to 410a.
  C) The refrigerant line length is over 80 ft. D) The refrigerant line length is less than 50 ft.

Question 2

What units are used to indicate specific enthalpy?
 
  A) BTU lb B) BTU/lb
  C) BTU D) Degrees Fahrenheit

[scikid]

Answer to Question 1

C

Answer to Question 2

B

[cookcarl]

Thanks for the timely response, appreciate it

[carlsona147]

Gracias!