Annex
Installation manual
pellet
top
21
9.2 Pellet storage area
Filling and suction pipe
Couplings of
"Storz Type-A,
with 100 mm internal diameter are most commonly used as connection couplings
for the tanker vehicle. The coupling nozzles fit exactly into the recesses around a sewer pipe of 110 mm exter-
nal diameter. The gap is sealed with mineral wool, silicone or foam. Easy accessibility to the connections must
be ensured. The couplings must then be earthed against electrostatic charging with a cable (at least 4 mm²).
The filling and suction pipe connections must be clearly labelled as such.
Installation position of the filling and suction pipe
The pipes must be positioned as high as possible in the storage area,
so that the storage area can be completely filled. They must be at least
20 cm from the ceiling (measured from the upper edge of the pipe to the
ceiling), to ensure that the pellets do not strike the ceiling during injec-
tion (dispersal effect).
Lines with light well
If the filling pipes are installed in a light well, they must be routed in a
straight line out of the light well for connection. A working space of at
least 35 cm to 40 cm must be provided at the fill couplings.
Access openings in the storage area
In Austria, the fire door must be fire retardant to class T30.
In Germany, no fire prevention requirements apply for storage quanti-
ties of up to 6,500 kg.
All doors and access hatches must be of dust-tight design and open
outwards. Wooden boards must be installed inside the door to prevent
the pellets pressing against the door. This allows the door to be opened
when the storage area is full. We recommend that you provide a means
of checking the filling level of the store by eye (e.g. by cutting small
windows in the wooden boards).
Position of the pellet storage area and the boiler room
Wood pellets are delivered in silo lorries and blown into the pellet stor-
age area. The silo vehicle should be able to drive up as close as possi-
ble to the filling connections / suction pipe. If the pellets are blown into
the storage area over a long distance, there is mechanical strain on the
pellets during filling, resulting in a certain amount of abrasion.
When filling the storage area, the length of the hose and the firmly in-
stalled filling line should not exceed a total length of 30 metres. If longer
distances need to be bridged, contact your pellet supplier to clarify what
technical solutions he can provide. Every metre of hose length and eve-
ry bend produce more fine pellet dust during the filling procedure. It may
be possible to route the line differently inside the building and consider-
ably reduce the length of the hose required to fill the storage area.
Impact protection mat
It is essential to fit an abrasion- and tear-proof impact protection mat. This mat must be attached to the ceiling,
in front of the filling pipe and at right angles to the plane of pellet injection. The impact protection mat should be
20 to 50 cm away from the opposite wall. When the storage area is filled for the first time, check that the injected
pellets hit the impact protection mat. The mat is installed to protect the wall against damage. If there are several
filling pipes, further impact protection mats must be installed correspondingly.
Seal
Fire door T30
Z-profile for board partition Door protection
board
Summary of Contents for pellet top touch 35
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