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3
USEFUL ADVICE
3.1
Central Heating
For reasonably economical service install a
room thermostat. Never shut off the radia-
tor in the area where the room thermostat
is installed.
If a radiator (or a convector) does not heat
up, check that no air is present in it and that
its valve is open. If the ambient temperature
is too high, do not alter the radiator valves.
Reduce the central heating temperature in-
stead by means of the room thermostat and
the function selector (7 in Fig. 3.1).
7
Fig. 3.1
3.2
Frost protection
This appliance is provided with a built in
anti-freeze system that operates the boiler
when the temperature is below 5 °C
Therefore, when the boiler is not lit and
used in cold weather, with consequent risk
of freezing do not switch off the boiler at
the fused spur isolation switch or close
the gas inlet cock.
3.3
Condensate drain
The condensate drain must not be modi-
fied or blocked. Blockage of the condensate
drain, caused by debris or freezing, can
cause automatic shutdown of the boiler.
If freezing is suspected and the pipe run is
accessible an attempt may be made to free
the obstruction by pouring hot water over
the exposed pipe an cleaning any blockage
from the end of the pipe.
If this fails to remedy the problem the assis-
USEFUL ADVICE
tance of a Gas Safe registered installer or
in IE a competent person should be sought.
3.4
For efficient and continuous operation of
the boiler, it is advisable to arrange mainte-
nance and cleaning by an Authorised Ser-
vice Centre Engineer, at least once a year.
During the service, the most important com-
ponents of the boiler will be inspected and
cleaned. This service can be part of a main-
tenance contract.
In particular, you are advised to have the
following checks carried out:
• primary 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
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
If the lock-out signal lamp comes on
This indicates that the safety lock-out 5 (Fig.
3.2) has stopped the boiler.
Periodic maintenance
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.
Operational faults
- 13 -
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