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Place the unit on a consistent base and fas-
ten by means of bolts, using the four drilled
holes at the base of the unit.
Areas where it snows regu-
larly.
If the unit is located outdoors and at ground
level, it should be placed on supports so as
to avoid obstruction of the air flow by an ac-
cumulation of snow. These supports should
be above the height the snow normally
reaches. It is convenient to install anti-snow
grids. (Fig. 11).
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Fig. 11
20
Orientation
Orient the unit in the direction of the predo-
minating winds. (Fig. 12).
Fig. 12
Clearances
When installing each unit, clearances should
be left for:
a) Air intake and discharge.
b) Maintenance servicing.
c) Power supply connections.
For proper operation, all minimum clear-
ances shown on the general dimension
diagrams should be respected always with
regard to possible obstruction of air circula-
tion of the work of a user.
Wiring
Electrical connections
All established national regulations
should be complied.
Each unit is supplied with a control box to
which the power supply will be connected
through a fused main switch or an automatic
switch.
GB
Warning
Loose cables can cause overheat-
ing of terminals or incorrect opera-
tion of the unit. Fire hazards may
also exist. Therefore, make sure all cables
are connected firmly.
Rotational direction of Scroll
compressors
The Scroll compressors operate correctly
in one single rotational direction. Although
these units are protected by a phase order
detector, when starting the equipment make
sure the rotational direction is correct.
If it is not correct:
- The compressor does not compress.
- It makes a strange sound.
- Amperage consumption is limited.
- It overheats in excess.
The phase detector should have the led son
for operation to be correct.
- Green led on means: Power ON.
- Yellow led on means: Relay ON.
Hydraulic connections
The hydraulic connections of the water in-
take and outlet of the unit should be carried
out respecting the intake and outlet direc-
tions indicated.
A galvanised iron or copper tubing can be
used, with dimensions no lower than those
indicated, and keeping in mind the pressure
drops at said connections and in the internal
exchanger of the installation.
Pump dimensioning should be carried out in
accordance with a nominal flow that allows
an ∆t within the operating limits.
In all cases, a flow switch should be installed
so as to avoid the possibility of operation
without water circulation.
An adequate expansion vessel for the total
volume of the water in the installation should
also be installed in the water return tubing.
During the winter season, with outdoor
temperatures below 0° C, take precautions
to avoid freezing of the water in the tubing
network.
Usually, a solution is filling the circuit with an
antifreeze mixture (glycol).
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