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Figure 5
The boiler is equipped with a hydraulic differential pressure switch that will inhibit the operation of the boiler in the event
of the pump seizing or running dry.
To shut down the boiler switch off the electrical supply to the appliance.
6. prolongeD stanDstIll of the system. frost proteCtIon
We recommend you avoid draining the whole system as water replacements engender purposeless and harmful limestone
deposits inside the boiler and on the heating elements.
In case the boiler is not operated during wintertime and is therefore exposed to danger of frost we suggest you add some
specific-purpose anti-freeze to the water contained in the system (e.g.: propylene glycole coupled with corrosion and
scaling inhibitors).
The electronic management of boilers includes a 'frost protection' function in the central heating system which operates
the burner to reach a heating flow temperature of 30° C when the system heating flow temperature drops below 5°C.
The frost protection function is enabled if:
* electrical supply to the boiler is on;
* the gas service cock is open;
* the system pressure is as required;
* the boiler is not blocked.
These boilers produced for natural gas can be converted to work with LpG.
Any gas change must be effected by a Qualified Service Engineer.
To maintain efficient and safe operation of your boiler have it checked by a Qualified Service Engineer at the end of every
operating period.
Careful servicing will ensure economical operation of the system.
Do not clean the outer casing of the appliance with abrasive, aggressive and/or easily flammable cleaners (i.e.: gasoline,
alcohol, and so on). Always isolate the electrical supply to the appliance before cleaning it (see section 5 "Turning off the
boiler").
InstructIons pertaInInG to the user
fIllIng the boIler
4.
Boiler filling tap
5. turnIng off the boIler
7. gas Change
8. servICIng InstruCtIons
41
IMportant:
Regularly check that the pressure
displayed by the manometer (11 - Figure 20) is 1 to 1.5
bar, with boiler not operating. In case of overpressure,
open the boiler drain valve.
In case the pressure is lower open the boiler filling tap
(Figure 5).
WarnInG:
Take special care when filling the hea-
ting system. In particular, open any thermostat valves
in the system, ensure the water enters slowly in order
to prevent the formation of air inside the primary circuit
until operating pressure is reached. Lastly, vent any
radiators in the system. BAXI declines all liability for
damage deriving from the presence of air bubbles in
the primary exchanger due to the incorrect or imprecise
observance of the above.
In case pressure drops occur frequently have the boiler
checked by a Qualified Service Engineer.
926.423.1 - GB
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