Technical information

29
Location
Before locating the unit, make sure you have received the
appropriate product by checking the specifications described
on the outside of same.
The unit should be placed on a perfectly horizontal plane,
making sure the base can support the weight of the unit.
If vibration-free operation is required, the unit can be placed
on a cork or similar anti-vibratory base, or fastened to the
base with anti-vibratory plates or supports.
Fastening the unit
Before installing the unit, make sure the structure can support
the weight of same.
If the unit is to be placed on the floor, a concrete base should
be prepared so as to distribute weight evenly.
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 clearances shown on the
general dimension diagrams should be respected always
with regard to possible obstruction of air circulation 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.
Loose cables can cause overheating of terminals or incorrect ope-
ration 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 rota-
tional 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 must have both LEDs on for correct
operation.
- Green LED on means: Power ON.
- Yellow LED on means: Relay ON.
Hydraulic connections
The hydraulic connections of the water intake and outlet of
the unit should be carried out respecting the intake and outlet
directions indicated.
A galvanised iron or copper tubing can be used, with dimen-
sions 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 Dt within the operating limits.
In all cases, a flow switch should be installed so as to avoid
the possibility of operation without water flow.
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 filling solution is applied the circuit with an anti-
freeze mixture (glycol).
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