AUX AL-H12/4R1D, Service Manual

Page: 109 / 157

AUX-Light CAC 50Hz R410A Trouble shooting
109
Additional refrigerant charge
When pipe length exceeds 5m, please add refrigerant according to the table below:
Connection
piping
Piping size) Additional refrigerant
charge amount (kg/m)
Gas pipe Liquid pipe
Piping
between
indoor and
outdoor unit
φ9.52×0.75mm φ6.35×0.75mm
0.02
φ12.7×1mm φ6.35×0.75mm
0.03
φ15.88×1mm φ9.52×0.75mm
0.05
φ19.05×1mm φ9.52×0.75mm
0.07
φ19.05×1mm φ12.7×1mm
0.09
Others
Users to install the air conditioner at site shall ensure that the oil can return to the unit smoothly.
◇
Horizontal pipes should incline toward the outdoor unit using a 20:1 slop.e
◇
If there is a height difference between the indoor and outdoor unit, oil loops should be installed in the inter
connecting gas (large) pipe;