AUKS AL-H18/4DR1(U), Service Manual

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AUKS DC Inverter 1 Drive1 50HZ R410A Universal outdoor unit
104
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
Oil grade and standard oil-filled volume of Compressor
Outdoor unit model Brand Compressor model Oil type Oil volume(cm
3
)
AL-H18/4DR1(U)
Shanghai
Hitachi
ATD141RDPA8JT 68HES-H 480
AL-H24/4DR1(U)
Shanghai
Hitachi
ATL232UDPC9AU 68HES-H 630
AL-H36/4DR1(U) GMCC DA250S2C-30MT VG74 820
AL-H48/5DR1(U) GMCC ATQ420D2UMU VG74 1400
AL-H60/5DR1(U) GMCC ATQ420D2UMU VG74 1400
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
the gas (large) pipe;
When the vertical pipe height difference is more than 5 meters, then for every 5 meters an oil loop must be
installed at the bottom of the gas (large) pipe, and a short loop (liquid ring) should be installed at the exit of the
indoor unit liquid (small) pipe;
When the connecting gas pipe vertical height difference is less than 5 meters but the constant rise distance is
too long, an oil loop should be installed in the gas (large) pipe every 10 meters.
◇ When the outdoor and indoor units are at the same elevation, the oil deposit bend and liquid ring do not
need to be installed, if the horizontal connecting pipe length is less than 10 meters.
When the horizontal connecting pipe length is more than 10 metres, install an oil loop in the gas (large) pipe
every 10 metres.