Operating instructions

18
OPERATING SAFETY DEVICES
Gas leak or fault
If a gas leak or fault exists or is suspected, turn the
boiler off and consult the local gas undertaking or
your installation/servicing company.
In case of power supply failure
The boiler no longer operates.
As soon as power supply is restored, the boiler will
be automatically restarted.
In case of loss of water in the system
CAUTION :The boiler is installed as part of a sealed
system which must only be drained and filled by a
competent person.
If the pressure shown on the pressure gauge
(diagram 20) is less than 1 bar or if the number 12 is
shown on the flashing display, the
system must be filled up immediately.
Call the nearest after sales service
department.
Important notice : A central heating system cannot
operate satisfactorily unless it is properly filled with
water and unless the air initially contained in the
piping systems has been properly bled off. If these
conditions are not satisfied, air noise will occur within
the system.
Air in the heating system
Persistent air in the heating system may indicate
leaks in the system or corrosion taking place. Call
the nearest after sales service department.
Overheating safety
There are four overheat safety functions :
1) If the water temperature inside the boiler
increases at greater than 4°C per second, the boiler
will stop for 10 minutes. The display will show 9
alternaded with E 25. After this time, the boiler will
attempt to relight. If the fault persists after 5
attempted relights, the boiler shuts down and
requires a manual reset. The display will show 9 25
blinking. - Check that the pump is operating, the
central heating isolating cocks are open and that
there is circulation in the system.
2) If the temperature difference between the cen-
tral heating flow and return pipes exceeds 40°C, the
boiler will stop for 2,5 minutes. The display will show
9 alternaded with E 30. After this time, the boiler will
attempt to relight. If the fault persists after 20
attempted relights, the boiler shuts down and
requires a manual reset. Check pump speed and
flow rate of the circulating system.
3) If the central heating flow temperature exceeds
100°C, the boiler shuts down and requires a manual
reset. The right-hand digits of the display will show
18. - Check that the pump is operating, the central
heating isolating cocks are open and that there is
circulation in the system.
4) If the central heating return temperature exceeds
95°C, the boiler shuts down and requires a manual
reset. The right-hand digits of the display will show
19. - Check that the pump is operating, the central
heating isolating cocks are open and that there is
circulation in the system.
In case of boiler safety shut down, press the reset
button
Frost protection
The Ecosy has a built in protection device that
protects the boiler from freezing. If the boiler is to
be left and there is a risk of frost, ensure that the gas
and electrical supplies to the boiler are left
connected. The frost protection device will light the
boiler when the temperature of the boiler water falls
below 3°C. When the temperature reaches 10°C,
the boiler stops.
Note : This device only protects the boiler. Always
ensure that adequate frost protection is given to the
system where necessary.
0 1 2
Diagram 20
Hab 196