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This phase occurs after the fixed ignition phase. The duration of this phase is a variable period that lasts until the moment
of fulfillment of the ignition requirements or until the moment when the flue gas temperature of 50 °C is reached. In case the
furnace ignition requirement is met before the expiry of the duration of this phase, it is stopped and the next phase follows,
which is the stabilization phase. In this phase the igniter, auger and flue gas engine are active.
Stabilization
The stabilization phase is a transitional phase between the ignition phase and the run mode phase. This phase occurs
when the ignition requirement is met, that is, when flue gas temperature reaches 50 °C. It lasts for three minutes and during
that time the auger, flue gas engine and the igniter are active.
Normal – Run Mode
The normal run mode begins following the stabilization phase. In this phase there are five levels of power that can be set
up as explained in the user menu 1. In this phase the igniter is turned off while the auger, flue gas engine and area engine are
active and run with different intensity depending on the level of power of the furnace. The furnace runs on the given power
until the modulation requirements are met.
Modulation
The furnace goes into the modulation phase when one of the two conditions are met:
1.
When the furnace reaches the preset ambient temperature
2.
When the flue gas temperature reaches a value greater than 250 °C
In the modulation phase the furnace runs on minimal power - power 1, until the moment when the temperature decreases
below the threshold value.
Safety
The Safety status occurs when flue gas temperature exceeds 275 °C. In this phase dispensing the pellets stops until the
temperature of flue gases decreases. If there is no decrease in temperature in the next 60 seconds the furnace goes into an
alarm stage and displays the Er05 message.
Extinguishing
The furnace is turned off by long pressing P2 for more than 3 seconds. The extinguishing phase occurs next during which
dispensing of pellets stops and the flue gas engine and the ambient fan operate at maximum capacity in order for the furnace
to cool down as soon as possible. Minimum duration of the extinguishing phase is 30 seconds and the requirement for the
furnace to completely turn off is for the flue gas temperature to be less than 68 °C.
OFF
During this phase the furnace is turned off, that is, no furnace output (flue gas engine, ambient fan, igniter and auger) is
active.
Block
The block state occurs in the event of a fault or alarm. In the block state the exhaust gas fan, auger and igniter are turned
off. To exit press P2 for 3 seconds: if there is no more block and no cause for alarm the system will turn off.
Ignition Recovery
The furnace goes into this phase in two cases:
1.
If there is a power failure in the operating mode and the flue gas temperature is greater than 50 °C.
2.
By pressing the main switch at a time while the furnace is in the extinguishing phase.
Other functions
Management of the absence of power
In the absence of power, the system keeps the most important functional data. When the power is restored the system
evaluates the saved data and:
If the furnace is turned on and the temperature of exhaust. gases is greater than 50°C, the system enters
the recovery point. Pressing P1 can lead to a sudden new system ignition.
If the furnace is turned on but the temperature of exhaust. gases is lower than 50°C, the system enters
the shutdown point with error Er15.
If the furnace is turned off or in extinguish or block phase, the system returns to its previous state.
In the absence of power for more than a week the system goes into block with an error message Er11
indicating that the DATE/TIME values are incorrect. When P1 is enabled the TIME value starts to blink signaling the
need for updating the TIME and DATE with the CLOCK function.
Management of pellet loading calibration
The user has the option to calibrate the dispensing of pellets in the user menu 1. Calibration ranges between -7 ÷ 7. 1=5%.
Each calibration of dispensing the pellets is applied to all workforce in percentages. For example, if -1 is set up then the
dispensing of pellets will be reduced by 5% in all operating modes (Power 1 - 5).
Содержание LUCA 12
Страница 5: ...2 Dimensional features...
