36
EN
Safety devices
Water temperature probe:
if the water temperature
approaches the blocking
temperature (100 °C), the
probe requires to interrupt
the supply of pellets.
Flue gas temperature
sensor:
thermocouple that
measures the temperature
of the fumes while keeping
the operation or shuts the
thermostove when the
flue gas temperature drops
below the preset value.
Pressure switch:
monitors
depression in the smoke
duct. It is designed to shut
down the pellet feed screw
in the event of an obstructed
flue or significant back-
pressure in the presence
of wind. At the time of the
pressure switch will show
““
A L A R - D E P - F A I L
A L A R - D E P - F A I L
””.
Safety thermostat with
manual reset for the
water temperature:
if the
temperature of the water
tank exceeds the preset safety
level of 100 °C immediately
stops the operation of the
thermostove and the display
will show ““
A L A R - S I C -
A L A R - S I C -
F A I L
F A I L
””. To restart you need to
reset manually.
RESTART
WATER
Electrical safety:
the
thermostove is protected
against violent surges of
current (ex. lightnings) by
the main fuse 4 A which
is located on the control
panel at the rear of the
thermostove. Other fuses to
protect the electronic boards
are to be found on the
boards themselves.
Reduction motor:
if the motor stops, the
thermostove continues to
function until the flame goes
out for lack of fuel, and until
It has cooled down to the
minimum level.
Automatic vent valve:
this
valve eliminates the air inside
the thermostove and of the
heating system.
Safety valve:
this valve acts
to prevent over pressurization
of the hydraulic system.
If the pressure of the
thermostove or plant exceeds
2.5 bar it drains the water
from the circuit.
Anti-freeze function:
if the probe in the thermostove detects a water temperature of less than 5°C, the circulation pump
is automatically activated to keep the system from freezing.
Pump anti-seizure function:
if the pump is not used for prolonged periods, it is activated periodically for 10 seconds, to
prevent it blocks.
Tampering with the safety devices is prohibited. It is only after eliminating
the cause which gave rise to the intervention of the safety system, that it is
possible to relight the thermostove and thus reset the automatic operation of
the sensor. To understand which anomaly has occurred, consult this manual at
paragraph relating to alarms which explains what to do based on the alarm
message the thermostove display.
Summary of Contents for Francesca 17B
Page 48: ...46 EN Cod 001115 NOTES...
