MCZ GARDENIA, Installation And User Manual

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11-SAFETY DEVICES AND ALARMS
SAFETY DEVICES
The product is supplied with the following safety devices
PRESSURE SWITCH
Monitors pressure in the smoke duct. It is designed to shut down the pellets feed screw in the event of an obstructed flue or significant
back-pressure. (wind)
SMOKE TEMPERATURE PROBE
Detects the temperature of the smoke, thereby enabling start-up or stopping the product when the temperature drops below the preset
value.
CONTACT THERMOSTAT IN THE FUEL HOPPER
If the temperature exceeds the preset safety level, it immediately shuts down boiler operation.
CONTACT THERMOSTAT IN THE BOILER
If the temperature exceeds the preset safety level, it immediately shuts down boiler operation.
WATER TEMPERATURE PROBE
If the water temperature approaches the shutdown temperature (85°C) the probe makes the boiler perform the “OFF Stand-by” automatic
shutdown.
ELECTRICAL SAFETY
The product is protected against sudden current surges by a main fuse in the power supply panel on the rear part of the product. Other
fuses that protect the electronic boards are found on the latter.
SMOKE FAN
If the fan stops, the electronic board promptly shuts off the pellets supply and an alarm message is displayed.
GEAR MOTOR
If the gear motor stops, the boiler will continue to run until the flame goes out due to lack of fuel and until a minimum level of cooling
is reached.
TEMPORARY POWER CUT
If the power cut lasts less than 10” the boiler returns to its previous operating status; if it lasts more it carries out a cooling/restart cycle.
FAILED START-UP
If during ignition no flame develops, the boiler will go into alarm condition.
ANTIFREEZE FUNCTION
If the probe in the boiler detects a water temperature of less than 5°C, the circulation pump is automatically activated to prevent the
system from freezing.
PUMP ANTI-SEIZURE FUNCTION
If the pump is not used for prolonged periods, it is activated periodically for a few seconds to prevent it from seizing up.
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