Biasi Activ A 25S, Руководство пользователя и инструкции по установке

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USE
USEFUL ADVICE
advised to have the following checks car-
ried out:
• domestic hot water heat exchanger;
• condensing heat exchanger
• burner;
• exhaust fume duct and flue;
• pressurisation of the expansion tank;
• filling up of the central heating circuit;
• bleeding of air from the central heating
system;
• general check of the appliance’s opera-
tion.
3.5 External cleaning
Before carrying out any clean-
ing, disconnect the appliance
from the electrical mains, using
the fused spur isolation switch
fitted adjacent to the appliance.
To clean the external panels, use a cloth
soaked in soapy water. Do not use solvents,
abrasive powders or sponges.
Do not
carry out cleaning of the appliance
and/or its parts with readily flammable sub-
stances (for example petrol, alcohols, naph-
tha, etc.).
3.6 Operational faults
If the boiler does not function and a code
that precedes the letter
E and the writing
RESET (see "LCD general features" to
page 10) appear on the LCD display, it in-
dicates that the safety lock-out has stopped
the boiler. The display background flashes
(Fig. 3.3).
Fig. 3.3
For the first lighting up and following main-
tenance procedures for the gas supply, it
may be necessary to repeat the resetting
operation several times so as to remove the
air present in the pipe work.
Safety lock-out may occur even in case of a
blockage of the condensate drainage (e.g.
plugged drain pipe). It is advisable to check
the condensate drainage pipe and traps for
cleanness.
Press the reset key on the boiler control
panel 13 (Fig. 3.1) to reset its functioning.
In this case and in case of per-
sistent lock-out call a compe-
tent and responsible Service
Engineer.
Other operational faults signalled on the
LCD display
If the LCD display displays a code that pre-
cedes the letter
E and the symbol, the
boiler has an anomaly that cannot be reset.
The display background flashes (Fig. 3.4).
Fig. 3.4