3 Mode of operation – Functional description
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HDG Compact 99 - 200 - Version 1 - en
©
HDG Bavaria GmbH 07/2008
Following the heating-up phase, the system switches to automatic
operation. In this mode, combustion is carried out according to the
entered control options.
In order to free the grate from ash which collects during combustion,
every second grate segment of the grating moves back and forth pe-
riodically. The automatic cleaning system cleans the heat exchanger
surfaces using the turbulators which move up and down.
The combustion chamber ash and air space ash are propelled into
the individual external ash containers by the automatic ash removal
system using delivery augers.
The air necessary for combustion is supplied as required via two
servo motors.
Via sensors:
– Continuously monitor the firing;
– Adapt boiler output for the heat requirements
– Minimise emissions; and
– Optimise boiler efficiency.
D
ELIVERY
SYSTEM
The delivery system is in the fuel bunker.
The fuel is transported from the fuel bunker to the dosing unit or to
the intermediate container.
The delivery system is controlled through the HDG Control.
HDG C
ONTROL
The boiler control HDG Control unit in the control cabinet is the elec-
tronic hub. This is a freely programmable PLC control.
Via the control unit, you can adjust the heating system HDG Compact
99 - 200 and obtain information on the current process status.
The current operating temperature is displayed.
Figure 3/6 - HDG Control control unit
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