37
Configuration 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