4 Planning and installation – Planning the heating system
33
F
UEL
BUNKER
The fuel bunker should have the following characteristics:
•
dry
•
dust-proof
•
statically suitable
•
accessible for the filling process
•
free of other installations, especially in existing buildings
•
adapted to fuel requirements
The refilling intervals should be kept as long as possible. The heating
system should be located so that the noise generated does not ex-
ceed DIN 4109, “Soundproofing in building construction”.
P
ROPER
DIMENSIONING
The size of the fuel bunker depends on the heating system, the deter-
mined thermal load, the resulting annual fuel requirements and exis-
ting building conditions. Practice has shown that filling the fuel
bunker four to six times per heating period is desirable.
P
ASSAGE
THROUGH
THE
WALL
The passage through the wall normally has to be made in the wall
between the heating room and the fuel bunker. Its position depends
on the distance and the position of the HDG Compact heating
system within the room and the customer's installation diagram. The
passage through the wall between the heating room and the fuel
bunker should have a width of 70 cm and height of 70 cm in order to
allow the assembly of the delivery auger.
V
ENTILATION
OF
FUEL
BUNKERS
Wood fuel products with higher moisture can cause relatively high
air humidity in the fuel bunker. Cold surfaces may thereby experi-
ence a drop below the dew point and develop condensation water.
This condensation water often occurs on non-insulated lids, doors or
cold walls and can result in a further moistening of the fuel.
It is therefore recommended to provide a suitable ventilation system
that corresponds to the building's features.
