Electrical Connections - Tallas D-ECONCEPT Instrucciones De Instalación Y Mantenimiento

3. COMMISSIONING
3.1

Electrical Connections

To improve immunity to the possible noise radiated towards other appliances it is recommended to use a separate
electrical duct to supply the product.
Attention: always respect the safety regulations!
Electrical installation must be carried out by an expert, authorised electrician, who takes on all responsibility.
The system must be correctly and safely earthed as required by the regulations in force.
The line voltage may change when the electropump is started. The line voltage may undergo variations
depending on other devices connected to it and on the quality of the line.
The differential circuit breaker for protection of the plant must be sized correctly according to the features
shown in Table 1. Use an F type differential circuit breaker for protection from sudden tripping. If the
indications given in the Manual are in contrast to the regulatory standards in force, take the standard as
reference.
The thermal magnetic circuit breaker must be correctly sized (see
3.2 Configuration of the Integrated Inverter
The system is configured by the manufacturer to satisfy most installation cases operating at constant pressure. The main
parameters set in the factory are:

Set-Point (desired value of constant pressure); SP = 3.0 bar/43.5 psi.

Reduction of pressure to restart RP = 0.3 bar / 4.3 psi.

Anti-cycling function: Disabled.
However, these parameters and others can be set by the user according to the system. See par. 4-5 for the
specifications.
For the definition of the parameters SP and RP, the pressure at which the system starts has the value:
Pstart = SP – RP For example: 3.0 – 0.3 = 2.7 bar in the default configuration.
The system will not work if the utility is at a height greater than the equivalent in water-column-metres of the Pstart
(consider 1 bar = 10 m.c.a.): for the default configuration, if the utility is at a height of at least 27m above the level of the
system, the system will not start.
3.3 Priming
The priming of a pump is the phase during which the machine attempts to fill the body and the suction pipe with water. If
the operation is successful the machine can work regularly.
Once the pump has been filled (par. 2.2) and the device has been configured (par. 3.2), it is possible to connect the
electric power supply after having opened at least one utility on delivery for the first 10 seconds.
The system starts up and checks for the presence of water at the delivery.
The pump is considered as primed when a water flow is detected at the delivery. This is the typical case of positive
suction head installation (Sect.2.1). The utility open at the delivery from which the water pumped flows out can be closed.
If, after 10 seconds, no regular flow is detected at the delivery, the system signals dry running (BL alarm). During the
next manual reset of the blocks ("+" and "-" keys) the priming procedure starts up (typical case of suction lift installation
Sect. 2.1
The procedure makes it possible to operate for a maximum time of 5 minutes during which the safety block for dry
running is not activated. he priming time depends on various parameters, the most influential of which are the depth of
the water level from which it is drawing, the diameter of the suction pipe, the water-tightness of the suction pipe.
Except for the use of a suction duct not less than 1" and sealed airtight (there are no holes or joints through which air can
be taken in), the system is designed to be able to prime itself in water conditions up to a depth of 8m of water, in less
than 5 minutes. As soon as the system detects a continuous flow at the delivery, it leaves the priming procedure and
starts working regularly., The utility open at the delivery from which the water pumped flows out can be closed. If the
pump has not yet primed after 5 minutes of the procedure, the display shows the dry running message. In this case,
disconnect the power supply, wait for 10 minutes and repeat the priming.
Operation
Once the electropump is primed, the system starts regular operation according to the configured parameters: it starts
automatically when the tap is turned on, supplies water at the set pressure (SP), keeps the pressure constant even when
other taps are turned on, stops automatically after time T2 once the switching off conditions are reached (T2 can be set
by the user, factory value 10 sec).
ENGLISH
Technical
6
Features).