Using the device shown in the illustration, which of the following statements is true when adding refrigerant as a vapor to the low side of the refrigeration system? Illustration GS-RA-01

Correct Answer: Option D — The hose labeled "H" should be connected to the suction service valve service port, the hose labeled "J" should be connected to the vapor valve on the refrigerant cylinder and the valve labeled "G" should be open.

Adding refrigerant vapor to the low side requires connecting the manifold center hose to the refrigerant cylinder vapor valve and the low-side hose to the suction service port. Opening manifold valve G allows vapor to flow smoothly into the active suction stream.