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.
Pipe Length Elevation and Additional Quantity of Gas
Cool
Suction Pipe
Capacity (W)
Diameter
2640
Ø6.35 mm (1/4")
3520
Ø6.35 mm (1/4")
5270
Ø6.35 mm (1/4")
6450
Ø6.35 mm (1/4")
caution
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.
Maximum length
Indoor unit
Piping length under 5m
Discharge Pipe
Diameter
Ø9.52 mm (3/8")
Ø12.7mm(1/2")
Ø12.7mm(1/2")
Ø15.88mm(5/8")
Outdoor unit
3 If the outdoor unit is installed on roof
be classed as non-serviceable installation.
Maximum
Standard
Length (m)
Length (m)
5
15
5
15
5
20
5
20
is based on reliability.
performance or malfunction.
When the level difference between indoor
height, or when the outdoor unit is installed
above the indoor unit, oil trap should be
installed every 5-7 meters.
Maximum length
Oil trap
Indoor unit
Piping length 5m or more
Additional
Maximum
Height (m)
Refrigerant
(g/m)
5
15
5
15
10
15
10
15
Outdoor unit
7