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[Boiler] function block – HACK Configuration parameter
6 Configuration parameter
6.1 [Boiler] function block – HACK
Parameters to be set
Set or check the following parameters.
Detailed descriptions of the parameters are provided
below.
Explanation of [Fuel]
This parameter sets the type of fuel used. The control
system contains appropriate values for each type of
fuel, to ensure optimum combustion and de-ashing.
Explanation of [Water content]
This parameter is used to set the current fuel's water
content for optimum regulation of combustion.
Water content = weight of water divided by total
weight (wood + water).
Explanation of [Fuel density [kg/m³]]
This parameter is used to set the current fuel's density
for optimum regulation of combustion.
Factory settings:
• Wood chips: 250 kg/m³
• Pellets: 650 kg/m³
• Miscanthus: 110 kg/m³
Explanation of [Flue gas recirculation]
When the fuel setting is changed in the control system,
the status of the flue gas recirculation is adjusted auto-
matically.
If the fuel is set to [Pellets] or [Miscanthus], the
setting for flue gas recirculation is changed to
[Yes].
If the fuel is [Woodchips], the setting is [No].
However, if wood chips with less than 15% water
content are used, the [Yes] setting must be made
manually.
Boiler
Settings
Fuel
Water content
Fuel density [kg/m³]
Flue gas recirculation
Conveyor type
Lock aux. boiler
Ash removal
De-ash after min.
De-ash after max.
Begin idle time WT cleaning
Idle time during WT cleaning
Empty ash box after
Return
Return riser valve
MixValve runtime
Residual O2
Increase O2 target value
Conveying system
Stoker unit
Stoker
Conv. time
Start lag
Stoker delay
Relation of runtime