Safety Devices - RED practika 28-33 Use And Installation Manual

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10. SAFETY DEVICES

The boiler is fitted with the following safety devices:
 PHOTORESISTOR
It detects the presence of a flame.
 PELLET THERMOSTAT (ALARM A03)
If the temperature exceeds the safety value set, it stops the functioning of the boiler immediately and
the sensor needs to be reset in order to restart the boiler, only once the same has cooled down.
 BOILER OVERTEMPERATURE THERMOSTAT (ALARM A18)
If the temperature of the water approaches the shutdown temperature (95°C), the boiler shuts down.
 WATER TEMPERATURE SENSOR (ALARM A17)
When the water temperature reaches 80°C, the boiler begins to drop in power gradually to 85°C. If
85°C are exceeded, this triggers a safety shutdown; the boiler restarts when the body has cooled down
properly.
 ELECTRICAL SAFETY
The boiler is protected against violent current surcharges by a general fuse situated in the power supply
panel at the rear of the boiler. Other fuses to protect the electronic boards are situated on the latter.
 SMOKE BLOWER BREAKAGE (ALARM A08)
If the blower fan stops, the electronic board promptly suspends the supply of pellets and the alarm is
displayed.
 GEARED MOTOR BREAKAGE (ALARM A11)
If the geared motor stops, the boiler continues to function until the minimum cooling level is reached.
 BRIEF POWER FAILURE
In the event of a power failure during operation, when the power returns, the boiler cools down and
then restarts automatically.
 FAILED START-UP (ALARM A01)
If a flame fails to ignite during the start-up phase, the boiler alarm is triggered.

ANTIFREEZE FUNCTION
If the sensor inside the boiler detects a water temperature of less than 5°C, the circulation pump is
automatically started to prevent the system from freezing.
 ANTI PUMP SHUTDOWN FUNCTION
If the pump is left unused for an extended period of time, it is started at regular intervals for one
minute every 24 hours of inactivity, to prevent it from shutting down.
THE SAFETY DEVICES MUST UNDER NO CIRCUMSTANCES BE TAMPERED WITH
The boiler can only be started up after the cause that triggered the safety system has been
identified, thereby restoring the automatic functioning of the sensor. To troubleshoot the fault,
please consult this manual, which illustrates - depending on the error message displayed by the
boiler - how to remedy it.
Safety devices
PRACTIKA 28-33
USE AND INSTALLATION MANUAL
Technical dept. - All rights reserved - Reproduction prohibited
Chapter
10
page 53