ADI LT boiler – Technical manual
Page
30
13. SAFETIES
These are the safeties included in the boiler:
Cause for safety
activation
Safety
component of
the boiler
Boiler restart
No flame
Ionization
electrode
Manual reset
Fan failure/air
passage obstruction
Air pressure
switch
Manual reset
Overheating
Safety
overheating
thermostat
> 90ºC+- hysteresis: the regulation stops the boiler.
> 95ºC: boiler lockout, error on the display. Manual reset.
> 100ºC: fan at the maximum power to cool down the boiler.
> around 103ºC: lockout, other error on the display, manual reset.
No gas
Minimum gas
pressure switch
Automatic reset
Low water flow
through the boiler
Boiler control unit
Safety 1: if the DeltaT in the boiler is higher than the maximum Delta
T, the power drops by 20%.
Safety 2: if it overcomes “the maximum Delta T” + 8ºC, the boiler
operates at the minimum power.
Safety 3: if it overcomes a higher value, the boiler stops and an error
message appears on the display E 154/434 or E 154/433.
Lack of water
pressure in the circuit
Pressure sensor
The boiler stops for safety if pressure in the circuit is around 0,8 bar.
14. BOILERS IDENTIFICATION LABEL
The identification label of each boiler is placed:
a) In the front of the boiler, attached to the higher water collector
of the boiler heat exchanger.
In order to visualize it, you have to lift up the top casing of the
boiler and remove the front casing. You will see the serial
number and the boiler model.
b) In an adhesive label in the external part of the boiler, where
you will see the rest of data.
BOILER FRONT VIEW
