10
Important:
This boiler function is enabled
only when boiler is connected to electrical
mains.
Anti-cycling
The boiler features an anti-cycling function.
The control board calculate automatically
the delay of the next start up of boiler
depending on boiler conditions.
Disconnecting the boiler from power
supply
Disconnect the boiler from power supply
only before service or when the boiler is
to be shut down for a protracted time (see
Chapter “Switching the boiler off” on page
8). When the boiler is disconnected from
power supply, all protection functions are
disabled.
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 set operating parameters.
If after power supply restoration the red
LED on the control panel (Fig. 1, pos. 5)
lights up, proceed in accordance with the
Toping up water in the heating
system
Water in the heating system (in small
quantities) can be topped up through the
boiler’s top-up valve (Fig. 3).
When topping up water in the system, the
following conditions must be met:
1. Pressure of the water supplied to the
boiler must be always higher than the
water pressure inside the heating
system.
instructions in section Starting the boiler
and turning if off.
Please note:
The boiler may get blocked
because of overheating caused by the
pump being switched off as a result of the
power failure. This fault can be fi xed by
pressing the RESET button on the boiler’s
control panel. If the fault persists, call an
authorised service.
Safety valve
The boiler is equipped with a safety valve
which opens when the pressure in the
heating system reaches 3 bar. DO NOT
TOUCH THE SAFETY VALVE! If the
safety valve starts releasing heating water,
always turn the boiler off, disconnect it
from power supply and call an authorised
service organisation. If the heating system
repeatedly looses pressure, consult your
service organisation.
Important:
All the above-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 in the ON position (I).
Service and maintenance
2.
The boiler must be cold (water
temperature must not exceed 30˚C).
3.
Recommended water pressure inside
the cold boiler (not more than 30˚C) is
1,2 to 2 bar.