7
Pipe Length Elevation and Additional Quantity of Gas
The outdoor unit is charged with the
refrigerant for standard pipe length.
When the connecting pipe length is longer
than standard length, additional refrigerant
should be added into the unit according
the above table through the service port on
3-way service valve on the outdoor unit.
Please maintain the shortest distance (3 to 5
meters) and shortest misalignment possible
between the indoor and outdoor units.
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is based on reliability.
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performance or malfunction.
When the level difference between indoor
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height, or when the outdoor unit is installed
above the indoor unit, oil trap should be
installed every 5-7 meters.
Outdoor unit
Outdoor unit
Maximum length
Maximum length
Indoor unit
Maximum height
Indoor unit
Oil trap
Rooftop Installation
1 If the outdoor unit is installed on a roof
structure, be sure to level the unit.
2 Ensure the roof structure and anchoring
method are adequate for the unit location.
3 If the outdoor unit is installed on roof
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be classed as non-serviceable installation.
Piping length under 5m
Piping length 5m or more
Cool
Capacity (W)
Suction Pipe
Diameter
Discharge Pipe
Diameter
Standard
Length (m)
Maximum
Length (m)
Maximum
Height (m)
Additional
Refrigerant
(g/m)
2640
Ø6.35 mm (1/4”)
Ø9.52 mm (3/8”)
5
15
5
15
3520
Ø6.35 mm (1/4”)
Ø12.7mm(1/2”)
5
15
5
15
5270
Ø6.35 mm (1/4”)
Ø12.7mm(1/2”)
5
20
10
15
6450
Ø6.35 mm (1/4”)
Ø15.88mm(5/8”)
5
20
10
15
caution
Maximum height
