Installation guide

11
than 85°C. The boiler is switched off when
the temperature of the heating water is
higher than 90°C (fault F3).
Running pump depending on
heating water temperature
The boiler enables setting running of the
pump after a certain selected temperature
has been reached. This function can be set
only by an authorised service technician.
Chimney draught control system
The boiler is equipped with a “Chimney
draught control system” (CDCS). Upon
an accumulation of combustion gases in
the boiler, i.e. in the case of insuffi cient
discharge of combustion gases, the CDCS
is activated and the boiler switched off
(infl ow of gas into the boiler is shut off).
Power failure
Power failure will turn the boiler off. When
power supply is restored, the boiler will
automatically restart itself without losing
any of the operating parameters settings.
If an error code appears on the display
after electrical power supply restoration,
unblock the boiler using the RESET
button.
Note: The boiler may be blocked as a
consequence of overheating caused by
the pump being switched off as a result of
power failure. Rectify this fault by pressing
the RESET button on the boiler control
panel. If the fault persist call an authorised
service.
Safety valve
The boiler is equipped with a safety valve
with an opening pressure of 3 bar. DO NOT
TOUCH THE SAFETY VALVE! Whenever
the safety valve starts releasing heating
water, switch off the boiler, disconnect if
from the electrical power supply and call a
service organisation. If the heating system
repeatedly loses pressure, consult your
service organisation.
Important: All the mentioned electronic
protection functions are enabled only
when the boiler is connected to power
supply (the power cord plug is inserted
into a power socket and the main switch is
in the ON position (I).
Service and maintenance
Maintenance of boiler by user
According to requirement the boiler casing
is cleaned without removing the upper
cover. Cleaning is performed when the
boiler is disconnected from the electrical
power supply by switching off the mains
switch and removing the power cord plug
from the socket. If the surface of the boiler
is damp it can be switched back on only
after it has dried.
It is necessary to check the water pressure
in the heating systems once in a while and
if necessary top up the water. Water can
be added into the heating system after
the boiler has cooled to less than 40°C
(measured by the thermometer on the
boiler). Failure to abide by this condition
may result in leakage or cracks caused by
stress in the block of the boiler.
In the case of gas leakage it is necessary
to shut down the boiler, close the gas
valve and call a service organisation.
Protection against legionella
It is recommended to that the hot water
in the tank is either heated constantly
to a temperature of 65°C or that the
temperature of heating the hot water is
increased at regular intervals to 70°C
in order to eliminate the possibility of
the spread of Legionella pneumophila
bacteria or other types of bacteria.