Use And Maintenance; Commissioning The Boiler; Lighting And Operation - Sime Estelle B4 INOX Manual Del Usuario

3 USE AND MAINTENANCE
3.1 COMMISSIONING
THE BOILER
When commissioning the boiler
always make sure that:
– the system has been filled with
water and adequately vented;
– the flow and return valves are fully
open;
– the flue and chimney are free from
obstructions;
– the electrical connections to the
mains and the earthing are correct;
– no flammable liquids or materials
are near the boiler;
– check that the circulating pump is
not locked.
3.2 LIGHTING AND
OPERATION
3.2.1 Lighting the boiler (fig. 6)
To light the boiler proceed as follows:
– switch on the main switch (1); the
green light turns on to indicate that
the appliance is powered (3). The
burner will start;
– set the stat knob (7) to the desired
D.H.W. temperature.
4 9
The boiler pump will continue oper-
ating until the preset temperature
has been reached.
While the water is being heated,
the boiler will continue automatic
operation to maintain the heating
temperature shown on the ther-
mometer (5) around 80°C by means
of the limit stat (6);
– once the water has been heated
with the selector (2) set to the sum-
mer function position, the burner
and the circulating pump will cease
operation; when the selector (2) is
set to the winter position, the sys-
tem pump controlled by the room
stat will start up.
In this case, operation of the burner
will be controlled by the boiler stat
(8) at the preset temperature;
– for best results, set the boiler stat
knob (8) to a temperature no lower
than 60°C to prevent the formation
of condensate.
The set temperature value can be
checked on the thermometer (5).
3.2.2 Safety stat (fig. 6)
The manually reset safety stat (4) trips
6 3 1
5
to switch-off the burners immediately
when the boiler temperature exceeds
95°C. To restart the boiler, unscrew
the black cover and press the button
underneath.
If the problem occurs frequently, call
an authorised technical assistance
centre for the necessary checks to be
carried out.
3.2.3 System filling (fig. 6)
If the orange LED (9) switches on due
to the enabling of the water pressure
switch and stops the boiler, it is pos-
sible to restart it by resetting the plant
pressure to 1-1.2 bar.
The system pressure is checked
through the hydrometer mounted on
the heating delivery tube (16 fig. 2).
3.2.4 Turning OFF boiler (fig. 6)
To turn off the boiler, cut off the volt-
age by pressing the mains switch (1).
Close both the gas-feed pipe tap and
the water tap if the boiler remains
inoperative for a long period.
7 2 8
Fig. 6
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