Tecnoalarm Tecnofire TF-A1-298-DE, Installation Manual

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TFA1-298
18
Battery information
The batteries must always be two. Never use batteries of
different manufacturers and capacities. Capacities lower than
7.2Ah, besides reducing the autonomy, distort its resistance
values causing possible improper failure signaling.
In accordance with the standards EN 54, it is mandatory to
block the two batteries using the provided
fi xing bracket.
The bracket must be screwed on the casing.
Self-regulation of the charging voltage
The power supply reads the temperature of the battery via the
NTC (Negative Temperature Coef
fi cient) probe and adjusts the
charging voltage of the batteries according to the themperature
measured. The NTC probe must be connected to the dedicated
polarized connector, the sensing end of the probe should be
attached to the battery casing using an electrical tape.
Automatic disconnection
In the absence of the primary power supply voltage
(230V AC mains), the batteries automatically assume the power
supply of the system. When the battery voltage drops to a value
<18V for a duration of 15 minutes, the batteries automatically
disconnect, to prevent their deep discharge and consequent
functional degradation.
Battery bracket fastening
Insert the bracket into the two slots located at the bottom.
Rotate the bracket blocking the batteries and fasten
the bracket using the supplied screws.
4-5 - Secondary power supply