Automatic boiler for wood pellets
Instructions for installation and operation
MENU 5 – ADVANCE
It is a time advance in seconds by which the feeder 2 will start running sooner than the feeder
1 starts working.
The range of this parameter is determined within the interval of 0 – 10 sec. This parameter is
selected to be 1 second for common operation with pellets of
∅
6 – 8.5 mm.
Start of the feeder 2 before its filling with fuel is very important because this reduces the stress
on the drive and prevents from undesirable grinding of fuel which thus comes to the burner in the
required granulometry which is necessary for perfect combustion.
When a new value of advance is being selected, proceed in a similar way as in the MENU
number 2.
MENU 6 – OVERLAP
It is a time interval for which the feeder 2 works longer than the feeder 1.
This parameter ensures that all fuel transported in a corresponding cycle into the feeder 2 is
always transported to the burner and does not stay in the transport routes. The transport routes are
thus always empty, which has a considerably positive effect on the safety of operation as this
prevents fuel from burning in the transport routes or in the fuel bin.
The scope of this parameter is determined within the interval of 0 – 10 seconds. We select 5
seconds for common operation. When a new value of OVERLAP is being selected, proceed in a
similar way as in the MENU number 2.
MENU 7 – FALL
FALL (attenuation) is a quiet mode of the boiler when the boiler is not burning actively because
the temperature of the output water has reached the value determined in the MENU number 2 or
the temperature in the reference room of the heated building has exceeded the temperature
selected on the indoor thermostat.
The range of the attenuation period is selectable within the interval of 10 – 90 min. The control
unit will do the following at the moment of transition to the attenuation mode:
- light up the indicating lamp FALL
- display the script FALL on the display unit
- stop the fuel feeding cycle
- the fan will be running for 2 minutes after the fuel burns out, the fan will then stop
- the circulation pump will be running until the moment when the output water temperature
drops under the value adjusted in the MENU number 2.
The attenuation mode will be finished, if the output water temperature drops by at least 3°C
under the value adjusted in the MENU number 2 or if the temperature in the reference room drops
under the adjustment level (0.5 to 1°C as per the sensitivity of the room thermostat).
The boiler with el. ignition
In case of fall dismissing, the boiler will immediately resume the automatic operation:
a) If the attenuation time didn´t reach level adjustment in the MENU number 2, the boiler will
resume the automatic operation without the function of el. ignition.
b) If the attenuation time exceeded level adjustment in the MENU number 2, the boiler will resume
the automatic operation with the function of el. ignition.
The boiler without el. ignition
When the attenuation time is reached (for example 45 minutes), the boiler will resume the
automatic operation for 2 minutes and will get again to the quiet mode.
This mode makes it possible to maintain the boiler on standby under minimum fuel
consumption. Only a minimum burning core is maintained in the burner furnace; this core ensures
that the boiler will immediately resume the automatic operation in the same parameters as before
the attenuation, if the attenuation is over.
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Summary of Contents for KP 10
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