eta PE-K 35, Installation Manual, Page: 52 / 60

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Subject to change due to technical improvements
Dust-tight door, no cables/pipes Pellet store
Dust-tight door, no cables/pipes
Dust-tight, fi reproof T30 door
For
pellet stores up to 6,500 kg
there are
no fi re
safety demands in Germany on doors or other
openings
to the pellet store. Doors and other
openings must open outward and be furnished with
a circumferential dust-tight seal.
For doors or other openings to the pellet store,
wooden boards must be mounted on the inner
wall
(30 mm thick with tongue and groove) so the
pellets cannot push against the door, or so that it
can be opened.
The door's lock must be sealed against dust on
the inner side. In spite of a widely circulated
construction document, the
door handle on the
inner side may not be removed . In an emergency,
it must be possible to open the door from the inside.
Seal
Fireproof door
T30 80/200 or 70/80
Boards at least 3 cm thick on the pellet store side Z bracket
No cables/pipes in the pellet store
In the pellet store, there should be no water pipes
or electrical cables. Water from a broken pipe would
cause the pellets to swell up. Uninsulated electrical
parts could ignite a dust explosion.
Shield cables/pipes that can't be removed,
insulate cold water pipes to prevent condensation
Existing cold water pipes that can only be removed
with unreasonable effort must be insulated against
condensation to ensure that the pellets cannot be
damaged by dripping condensation.
Pipes and cables in the path of pellets being
injected, especially those on the ceiling, must be
shielded. Ensure that the pellets are gently defl ected
by a protective plate.
Flight path
of pellets
Protective plate
Piping/cabling
to be protected
Flight path
of pellets
Protective plate
Piping/cabling
to be protected
Only explosion-proof electrical installations
No electrical equipment such as switches, lights,
junction boxes, etc. may be present in the pellet
store.
Unavoidable installations must be airtight and
moisture-proof to protect against explosions, and
in the fl ight path of pellets they must be protected
against damage. Existing junction boxes that cannot
be moved should at least be fi lled in with foam to
seal all exposed live parts.