OMAS Air-Fi AFT7 Installer And User Instruction Manual page 17

2.9 CONNECTING THE PIPES ON
THE EXTERNAL UNIT
Line up the pipes of the internal unit together
with the ones of the external unit and screw
manually the unions.
Do not force the screwing with tools if the
line up operation it is not perfectly effected.
Tighten then with the help of a dynamometric
key by respecting the details quoted in the
previous page :
After this, put the pipe insuting back and
complete the insulating operation with
polyethylene tape.
It is advisable to insulate the moisture drainage
pipe with the cooling pipes in order to have the
pipes all together.
Pipes length
The maximum length of the connection pipes is
20m. For more than 5m, pay attention to the
cooling quantity to add for each additional meter
of pipe ( See section 1.2 ).
If the vertical distance between indoor and
outdoor unit is more than 3m (max. 10m ), the oil
plug phenomenon can occur. To avoid this
phenomenon it is advisable the presence of a
siphon into the pipeline.
ENGLISH -16-