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3.2. CONNECTION

The unit has to be installed following the

prevailing regulations for electrical installations.

In the “mounting box” model, the grommets

provided with the unit are to be installed, removing the
relevant dies (this should be done with the connection

cover in place and screwed to avoid possible
breakage).

In the “build-in” model the terminals are placed at

the back and they are the
connector type. On placing

the terminals check that they
have been introduced in the
guides, as it is shown in the
figure.

It is advisable to connect the cables to the

terminals with terminal connections, which are also
included with the unit.

There is also a protection box for all the

terminals, in case there is a risk of electrical sparks
from storms entering the cables.

3.2.1. SUPPLY TO THE EQUIPMENT

Before connecting the unit, it is necessary to

check its identification label where the characteristics
of the power feeding are to be found.

•

Power feeding at 220 Vac:
A 6 amp magneto-thermal switch is to be included

in the installation. It will be used as a disconnection
device and it has to be placed near the unit and at an
accessible place for the user.

It is recommendable to do this as directly as

possible, avoiding that the same cable supplies other
sections. Use cable of the H05VV-F type, 1mm

A fuse (general fuse) and a varistor protect the

mains input. The varistor might short-circuit the fuse
automatically, on detecting an overload on the line

(lightning, etc.); replace it with one of the same
characteristics.

For unstable or fluctuating voltages use grid

stabilisers.

If the unit is to be disconnected from the power line

during several weeks, it is advisable to remove the
bridge marked as “J4” (next to the battery) in the circuit
placed behind the keyboard, and insert it again before
connecting it to the power line.

•

Power feeding at 12 Vdc:
Check the polarity of the terminals.
Connect two direct cables from the battery to the

equipment feeding (+12-) avoiding that those cables
supply other units or elements.

If the battery is far away from the controller, use

high section cables and make a reduction when
entering the equipment.

The input is also protected with a fuse and a

varistor.

To replace the fuse, half turn the fuse cover and

insert another of the same value.

3.2.2. CONNECTING THE EARTH TERMINAL

The “build-in” model has a terminal screw to

connect the protection earth terminal, and which is
placed near the feeding terminals.

In the “mounting box” model, a protection

terminal is not needed, but it has got a box terminal

marked as:

to be connected to the earth

terminal.

Both the earth and box terminals are used to

protect the unit by directing all electrical sparks

produced by the internal gas discharger to the earth.
These sparks can come in through the outlet cables.

3.2.3. CONNECTING INPUTS

The contacts that join the inputs with the

common have to be normally open and free of
tension. Avoid placing the cables of these inputs near
power lines, dividing them into two separate groups.

- TERMINAL NUMBER 3. Detector of flow

circulation. In the version by time, connect a testing
spike or external programmer or join it directly to
terminal number 6 if circulation is continuous. In the
version by volume connect a volumetric transmitter of

impulses.

- TERMINAL NUMBER 4. If the unit has a

differential pressure gauge which detects when filters
are dirty, connect it to this cleaning start input and to
the common (CE).

- TERMINAL NUMBER 5. Breakdown input to

which one or several securities (maximum/minimum
pressure gauges, etc…) will be connected, if
necessary. These will only be accepted when a filter

cleaning is taking place, leaving the unit out of work.

- TERMINAL NUMBER 6 (CE). Input common.

3.2.4 CONNECTING OUTLETS

Connect the solenoids, relays, etc. between the

common of outlets and the corresponding outlet.

Do not surpass the charge per outlet and

common.