3 Mode of operation – Functional description
14
– Adapt the boiler output to the heat requirements
– Minimise emissions
– To optimise boiler efficiency
B
OILER
AND
WEATHER
-
COMPENSATED
HEATING
CONTROL
HDG
C
ONTROL
B
OILER
CONTROL
UNIT
The boiler control unit of the pellet boiler HDG K10 - 33 is the
electronic hub. It consists of the ready-to-use control panel and
control unit on the top right side of the boiler. Using the control unit,
you can regulate the boiler and call up information on the current
process.
If the heating circuits issue a request for more heat, the pellet system
automatically switches to the
flushing
operating mode and the
combustion process begins.
Once the desired boiler temperature has been reached, i.e. the need
for heat has been met, the heating system changes to
Burn out
mode and subsequently to the operating status
Standby
.
H
EATING
CIRCUIT
CONTROL
The HDG Control controls the entire energy management of the
heating system including the following, depending on the version:
•
Accumulator management
•
Weather-compensated heating circuits
•
Domestic hot water heating
•
Control of the second boiler
•
Transfer of heat into the district heating grid
•
Solar system for hot water and support of the heating system
✎
For a description of the HDG Control boiler and weather-compen-
sated heating control, refer to the “HDG Control” operating
manual.
D
ELIVERY
SYSTEM
The delivery system is in the pellet storage room. Various delivery
system options are available.
•
Suction probes: The pellets are drawn up through 8 suction
probes in the fuel storage room.
•
Auger: Via an auger, the pellets on the sloping floor are
transported to the transfer station.
•
Pellet mole: The pellet mole moves freely in the fuel storage room.
•
Pellet fabric silo: External pellet storage made from polyester.
The delivery system is controlled by the control system HDG Control.
