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Cod.: 240.010.0042
DLS / DLS-C Series
2 CAUTIONS
These instructions are intended for qualied technicians.
Before carrying out any operations, make sure to have read and understood this manual. Do not make
changes and do not carry out maintenance operations not described in this manual. The manufacturer does
not accept responsibility for injuries to people and damages to things occurred because the information
within this manual has not been read and followed.
The installation must only be carried out by qualied personnel.
The operations described here must be carried out only by qualied technicians.
The customer is civilly liable for the qualication and mental or physical state of the professional gures who
operate this equipment. They must always use the personal protective equipment required by the laws of
the country of destination and anything else provided to their employer.
The DLS system can also operate without the connection to the mains (off-grid). Under these conditions
and based on the system settings, the inverter output can be automatically switched to the EPS mode
which, by means of an internal interlock system, will feed the loads connected to a privileged line. According
to the safety provisions in force in the country of installation, the NEUTRAL line may have to be connected
to the earth potential to guarantee the operation of the protection systems against direct discharge provided
for the privileged line and located downstream of the inverter and / or to ensure the correct operation of the
loads connected to the AC OUT port. The DLS, in EPS mode, automatically realizes the connection of the
NEUTRO line to the earth potential. If, due to particular needs, this connection should not be made, to
get the inverter output oating, it will be necessary to disable the automatic connection function of
the NEUTRAL to the earth potential through the system conguration menu. Refer to the SYSTEM
PROGRAMMING section.
Emergency power in EPS mode is automatically turned on and off based on battery charge status. This
means that during an emergency the power supply of the AC OUT port can be unexpectedly restored even
in standby mode. For this reason, to avoid possible injuries from electric shock, before carrying out any
installation or maintenance work on the home network, it is necessary to deactivate the DLS operation
using the AC BYPASS switch and disconnect it both from the AC power supply, by opening the main circuit
breaker, and from the photovoltaic eld, by opening the DC disconnector integrated in the DLS.
PV panels, when exposed to the sun, can produce dangerous voltages. It is recommended to carry out all
the procedures necessary to make the work area safe.
The DLS system operates with low voltage lithium batteries (LV). Batteries produce electricity and can cau-
se electric shock or re in the event of a short circuit or incorrect installation.
.
Only low voltage (LV) lithium batteries approved by DELIOS s.r.l. can be connected to the DLS system. The
use of non-approved batteries can affect the correct functioning of the system and relieves DELIOS s.r.l.
from all liabilities and invalidates the warranty.
Batteries must be installed in a suitable area that complies with local regulations. The installation area must
ensure enough ventilation and the absence of open ames and sparks as potentially explosive gases may
be generated during operation.
It is strictly prohibited to open the DLS system except as listed in this manual. The installation of the
equipment must not be carried out by unqualied, under the inuence of alcohol or drugs, have prosthetic
heart valves or pacemakers.
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