Idea ICC(ICA)-**HR-SA6-NI, User Manual

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169
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 0.02
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;
When the vertical pipe height difference is less than 5 meters, an oil loop should be installed at the bottom of