Author Question: Organizations that set safety standards for manufactured ductwork include: A) AHRI and HVAC ... (Read 72 times)

gbarreiro · **on:** Jul 27, 2018

Organizations that set safety standards for manufactured ductwork include:

A) AHRI and HVAC Excellence.
B) Underwriters Laboratories and the National Fire Protection Association.
C) EPA and OSHA.
D) ACCA and RSES.

Question 2

How does the refrigerant charge affect a system's subcooling?

A) The refrigerant charge does not affect the system subcooling.
B) Adjusting the refrigerant charge only affects the subcooling if the refrigerant is added on the high side.
C) Removing refrigerant increases the system subcooling.
D) Adding refrigerant increases the system subcooling.