37
Conguration of connection pipe
Additional refrigerant charging amount for R407C, R410A and R134a
Diameter of connection pipe Outdoor unit throttle
Liquid pipe Gas pipe Cooling only(oz/ft) Cooling and
heating(oz/ft)
Φ 1/4’’ Φ3/8’’ or Φ1/2’’ 0.161 0.215
Φ1/4’’ or Φ3/8’’ Φ5/8’’ or Φ3/4’’ 0.161 0.537
Φ1/2’’ Φ3/4’’ or Φ7/8’’ 0.322 1.290
Φ5/8’’ Φ1’’ or Φ1 1/4’’ 0.645 1.290
Φ3/4’’ - 2.688 2.688
Φ7/8’’ - 3.763 3.763