Okofen Flexilo Manuel page 28

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The pellet and air hose are flexible spiral hoses made out of plastic. A copper braid
avoids the static loading of the spiral hose.
To avoid damage to the spiral hose, you must observe the following assembly guideli-
nes:
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MANUAL
7 Montage des Vakuumsystems – Assembly of the vacuum system
Bending radius: The hose should be led as briefly as possible and with as few cur-
ves as possilbe. Bending radius may never be smaller than 30cm.
Upward gradients: Max difference in height = 6m; A difference in height of up to
3m can be overcome at one time. Larger differences in height must by interrup-
ted with a minimum 1m long crossbar.
Impact protection: The spiral hose can be mounted up to 4 meters exactly
straight. Small bends particularly in front of curves reduces the abrasion of the
spiral hose.
Installation in the soil and openings: When laying directly in the ground and
trough openings the spiral tube must be conducted in a drain pipe with at least
100mm diameter. This pipe must be sealed and may not make any larger arch
than 15°.
Tightness: In order to keep problem-free a sucking of the pellets, an absolute
tightness in the system must be respected. All connection points must be provi-
ded with a hose clip.
Potentialequalization: The hoses are provided with a copper braid, which keep the
hose antistatic. In order to ensure the function of the anti-statics, those copper
braid must be attached at each end to the grounding connection.
Fire protection: At each wall break-through must be installed a fire protection seal
in the pellet- and the air hose.
Crossing: Please make sure that you cross the hoses as few as possible.
Length of the spiral hose: The maximum length for pellets hose and air hose are
each 20m.