51
connected, maintain this pressure for a while until sure
that all impurities have been removed. To carry out such
an operation it is necessary to procure a vacuum pump
with a capacity equal to at least 40 l/min (0,66 l/s) and:
-
By means of a flexible with a 1/4 attachment connect
a header gauge to the external unitis gas line service
connection (after unscrewing the cap). See fig. 16 for
the connection modes. Activate the vacuum pump
and leave it running for at least 2 hours.
-
If after 2 hours the pressure continues to be greater
than 50 Pa this means that there was alot of humidity
in the circuit and that there is a leak in the same
circuit. Leave the pump running for another 3 hours.
If at the end of this time the pressure still has not
descended to 50 Pa, it will be necessary to carry out
a search for possible leakages.
-
Once the suction has been concluded, remove the
flexible from the service connection while the vacuum
pump is still running.
-
Finally, put the cap back on checking that it is closed
properly.
k) After opening the relevant cap, slowly open the tap on
the intake line and also the tap on the liquid line which
are found in the external unit, in order to allow the
diffusion of the cooler within the appliance.
3.6
Laying and connection of condensate removal
lines
3.6.1 For models 12 - 15
The appliance features an automatic system that
automatically drains any condensate fed by gravity (or a
pump) to the outdoor unit.
In the heat pump version, connect the fitting provided so
the water produced in defrosting mode can be discharged
into a drain.
The indoor unit must be provided with its own condensate
drainage line. One end must be connected to the
condensate drain connection on the indoor unit and the other
end must be connected to the condensate drain system
located on the outdoor unit in the position indicated in the
photograph (Fig. 17). The condensate is drained from the
condensate drain tank only by the force of gravity. Due to
the restricted space available, the tank is not very high and
therefore the drainage head is somewhat limited. The
drainage line must always feature at least a 3% gradient in
the direction of the flow and must avoid any ascents or
reverse gradients. The condensate drainage line can be
made using any rigid or flexible pipe with a 16 mm minimum
inside diameter.
IMPORTANT: After the condensate drainage line has been
connected to the internal unit it is essential to check that it
functions properly by slowly pouring half a liter of water into
the tray and observing that the resulting flow is regular.
Fig. 17
