17
User’s operating instructions
Freezing prevention
In case of extended periods of operation below
zero, it is suggested:
1 - Close the cold water tap.
2 - Turn the water flow rate adjusting knob to its
“MAX” position.
3 - Turn the drainage valve ‘‘D‘‘ and extract it,
re-position it when the residual water has been
completely drained.
PRECAUTIONS
-
If you open the water tap before switching on
the water heater, this will not start automatically.
-
When taking a shower, in order to avoid being
scalded, make sure the water temperature is
at an acceptable value.
-
After using water at high temperature, in order
to avoid the risk of being scalded at the next
use, adjust the water temperature at an
acceptable value.
The dust, in time, could cause the lockout of
the water heater and compromise the combus-
tion with increase of the carbon monoxide. It is
then necessary to call a qualified technician
for cleaning and remove the dust and soot
every six months in order to make sure the
combustion products are evacuated regularly.
The water heater must be installed vertically.
Safety precautions
Gas accidents prevention
Make sure the flame extinguishes after the use.
Check the soundness of the gas connections
with a soap solution. If a gas leack should be
detected open immediately the windows and
don‘t switch on or use electrical appliances, or
connect or disconnect plugs from sockets,
because flames or sparks can provoque
explosions.
Adjust the water flow rate through the knob
‘‘C‘‘
and the hot water temperature through the
button
‘‘B‘‘
, according to your own needs. It is
good to get familiar with the appliance commands
by repeating several times the ignition procedure
after the installation or the first use.
When the water tap is open while the ignition
button if off, the water heater doesn‘t work: only
cold water runs through it. If hot water is needed,
you have just to push the button
‘‘A‘‘
.
When the water tap is closed, the water heater is
switched off, but the fan continues working still
for a few seconds.
The outlet water temperature doesn‘t
correspond exactly to the pre-set temperature.
Fire Prevention
In case of lack of ignition or lack of D.H.W.
drawing close the gas and water taps.
Don’t place onto the water heater towels or
clothing.
Don’t store flammable substances in the pro-
ximity of the water heater.
Prevention from carbon monoxide poisoning
This water heater takes the air for combustion
and discharges the combustion products throu-
gh the coaxial duct, that, for this reason, has to
be installed as specified in the paragrapf 3.9. A
wrong installation could create dangers up to
the death.
A too low or too high water presure can cause
an anomalous combustion.
In these cases don’t use the water heater up to
when the water pressure returns to the normal
value.
Behaviour in anomalous conditions
In case of noisy combustion, smoke at the out-
let or poor combustion, close the gas gate val-
ve, switch off the appliance and contact the
service center.
Prevention of scald injury (if the casing is
removed)
The qualified technician , after removing the
casing, must check the flame via the sight
glass.
During this operation it is important to take care
and stay at a minimum distance of 300mm.
