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2.7
2.8
32
2.9
For a correct operation of the unit FrAE don't con-
nect any duct on the return side and respect the
minimum suggested dimension of the air intake grid.
In the MV versions it is possible to direct the air flow
by changing the inclination of the grid, as shown in
the illustration.
2.10
Discharge
grid
-
air
flow
orientation
locali.Indice di revisione
Casing removal
remove the screws that keep the casing fastened.
2.11
remove the casing from the structure.
Hydraulic connections
on open system (e.g. when using well water), the wa-
ter used should be cleaned from suspended matter
by means of a filter which should be located in the
inlet. otherwise there is a risk of erosion due to sus-
pended matter.
You must also ensure that the unit is protected from
dust and other substances that cause an acid or al-
kali reaction when combined with water (aluminum
corrosion).
If the unit is equipped with a valve, connect the con-
nection pipes to the valve.
Coil maximum working pressure: 16 bar.
Always use two spanners to connect the coil
to the pipes.
locali.Indice di revisione
2.12
Always fit a gate valve in the water circuit.
Please make sure that no leakage occurred.
To avoid leakage please insulate the threated ends
of the tubes with hamp and tighten them with care.
If the unit is used for cooling, insulate the pipes and
valve to avoid drops of condensate forming.
During the summer and when the fan is inactive for
long periods, you are recommended to shut off the
water supply to the coil to avoid condensation form-
ing on the outside of the unit.
Connect the siphon to the drain according to the
figure.
2.13
Install a condensate drain pipe with a slope of
at least 3 cm/metre.
Pour a few litres of water into the condensate collec-
tion tray to make sure it is properly evacuated. In case
of problems, check the sizing of the siphon, slopes or
possible obstructions.
EN
33
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