Rooftop Installation
1 If the outdoor unit is installed on a roof
structure, be sure to level the unit.
2 Ens ure the roof structure and anchoring
method are adequate for the unit location.
Pipe Length Elevation and Additional Quantity of Gas
Suction Pipe
Model Number
Diameter
EXI09HL1W-A1
EXI12HL1W-A1
EXI09HL1W-A2
EXI12HL1W-A2
EXI18HL1W-A2
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.
meters) and shortest misalignment possible
between the indoor and outdoor units.
Outdoor unit
Maximum length
Indoor unit
Piping length under 5m
All manuals and user guides at all-guides.com
3 If the outdoor unit is installed on roof
Discharge Pipe
Standard
Diameter
Length (m)
structures or external walls, this may result in
excessive noise and vibration, and may also
be classed as non-serviceable installation.
Maximum
Maximum
Length (m)
Height (m)
10
20
10
10
20
10
10
The maximum allowance length and height
is based on reliability.
Exceeding the maximum may cause poor
performance or malfunction.
When the level difference between indoor
and outdoor units is greater than maximum
height, or when the outdoor unit is installed
above the indoor unit, oil trap should be
Outdoor unit
Maximum length
Oil trap
Indoor unit
Piping length 5m or more
Additional
Refrigerant
(g/m)
20
20
6