Nova Florida DRAGO DUAL 23 Installation, Use And Maintenance Manual - page 6
1.2 Boiler operation (pic. 1)
1.2.1 Switching on
* Open the fuel tap.
* Turn the boiler main switch A to
the ON position (the light comes
on).
* Turn the heating water tempera-
ture control knob B to the required
setting.
* Set the room temperature value
on the room thermostat (if there
is one).
* Light C is on when the heating
system is in operation.
* Light E is on when the burner is
in operation.
Warning: When starting gas boi-
lers after a long period of inacti-
vity, especially LPG-fired boilers,
there may be air bubbles in the
pipes.
So, before switching the boiler
on, turn on another gas appliance
such as a cooker ring.
Even so, the boiler may not switch
on once or twice. It is therefore
necessary to press the reset but-
ton (see paragraph below).
1.2.2 Burner shutdown
If the boiler does not function
correctly, the burner cuts out auto-
matically and the relevant light
comes on. It is necessary to pro-
ceed as follows:
* Check the fuel supply. For gas
burners make sure the gas tap is
open and gas is being supplied,
for example by lighting a gas
ring.
* Press the burner reset button. If
the boiler does not start up after
two attempts, contact an authori-
sed Service Centre or a qualified
technician.
If the burner cuts out frequently,
this means there is a recurring
malfunction, so contact a quali-
fied technician or an authorised
Service Centre.
1.2.3 Shutdown due to overhea-
ting
If red light D comes on due to
overheating, it means the safety
thermostat has cut in due to a
recurrent malfunction. Contact an
authorised Service Centre or a
qualified technician.
1.3 Maintenance
It is a legal requirement to have
the boiler and the burner serviced
once a year.
If the boiler is serviced regularly, it
will optimise efficiency, safeguard
the environment and not cause
damage or injury. The boiler must
be serviced by qualified person-
nel.
The user may only clean the
exterior casing of the boiler,
using a suitable cleaning pro-
duct.
Do not use water!
1.4 Information for the user
The user only has access to
parts of the boiler which can be
reached without the need for
specific tools. The user must
never remove the outer casing
of the boiler or tamper with the
parts inside.
NO ONE IS AUTHORISED TO
MODIFY THE BOILER IN ANY
WAY, NOT EVEN QUALIFIED
TECHNICIANS.
Qualified technicians are autho-
rised to install specific original kit
on the boiler.
The Manufacturer declines all lia-
bility for injury or damage resul-
ting from attempts to tamper with
the boiler or incorrect operation.
The heating system can be pro-
tected against freezing by using a
specific anti-freeze for multi-metal
systems. Do not use car engine
anti-freeze products. Check the
level and quality of the anti-
freeze regularly.
The boiler has a thermometer
displaying the water temperature.
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