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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 or
by acting on the 12 and 13 heating adjust-
ment keys (Fig. 3.1).
11
Fig. 3.1
3.2
Frost protection
The anti-freeze system and any additional
protections protect the boiler from possible
damage due to frost.
This system does not guarantee protection
of the entire hydraulic system.
If the external temperature can reach val-
ues lower than 0°C, it is recommended that
the entire system is activated adjusting the
room thermostat at a low temperature.
The anti-freeze function is also activated
with the boiler in stand-by (Fig. 3.2).
Fig. 3.2
USEFUL ADVICE
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.
If the boiler is deactivated, have a qualified
technician empty the boiler, the c.h. system.
3.3
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 ac-
cessible an attempt may be made to free
the obstruction by pouring hot water over
the exposed pipe an cleaning any blockage
13
from the end of the pipe.
If this fails to remedy the problem the assis-
tance of a Gas Safe registered installer or
12
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
components of the boiler will be inspected
and cleaned. This service can be part of a
maintenance contract. In particular, you are
advised to have the following checks car-
ried out:
• 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.
Condensate drain
Periodic maintenance
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