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1.3 Ventilation
Installing the horizontal ventilation pipe
Install the horizontal ventilation pipe (part 11) in the device. En-
sure that the pipe end comes on top of the receptacle so that
possible condensate drains in the receptacle (see Figure 3).
Ventilation pipe through the back wall
Install the ventilation pipe through the back wall (Figure 4). Drill a
lead-through of at least Ø 75 mm on the back wall for the horizon-
tal ventilation pipe (part 11) according to the dimensioned draw-
ing (Figure 2). The hole drilled in the wall must be a little higher
than the hole in the device to ensure the condensate does not
remain stagnant in the pipe. Cut the horizontal ventilation pipe to
the correct length so that the bend used connects to the vertical
ventilation pipe with as gentle curve as possible. Ensure that the
pipe is positioned inside the dry toilet as shown in Figure 3.
The horizontal ventilation pipe is extended with a sewer pipe of
Ø 75 mm until it reaches above the roof ridge. Biolan Ventilation
Tube Package has been specifically designed for this purpose,
and it is available as an accessory. Suitable pipe is also available
at specialised HVAC shops and well-stocked hardware shops. It
is recommended that a rounded bend is used. Additional curves
in the ventilation pipe disrupt natural ventilation and can cause
unwanted odours. Ventilation can be further improved by using
Biolan Wind Fan.
Ventilation pipe in the toilet space
The ventilation pipe can be routed from the toilet to the roof
according to the instructions given above (Figure 5). The lead-
through to the roof can be sealed with a specific roof lead-
through set. Hardware shops sell lead-throughs as accessories.
1.4 Liquid removal
Installing the liquid funnel and the liquid pipe
Attach the liquid funnel (part 14) to the liquid pipe (part 17),
and install the funnel in the bracket (part 15) inside the device.
Route the liquid pipe around the receptacle through the hole on
the back of the device. The pipe is flexible, and its length can be
adjusted by pulling both ends. If the site does not include sewer-
age, make a hole of at least Ø 43 mm for the liquid removal pipe
(part 17) on the back wall or the floor (Figure 5).
Draining liquid
The liquid pipe must be led to a closed canister, container or sew-
age system. In dimensioning the liquid tank and selecting its lo-
cation, consider the fact that the volume of urine excreted daily
is approximately 1–1.5 litres per person. Ensure a sufficient tilt
when installing the liquid pipe so that liquid will flow naturally
downwards. This means that the hole made in the wall must be
lower than the hole in the device (2–3 cm/m). The canister can be
placed on its side or buried in the ground. Sewer pipe parts of Ø
32 mm are also suitable for extending the liquid pipe. It is recom-
mended that you use a sleeve in the joints.
For more information on regulations concerning
composting, contact your local waste advisor.
More information on composting and using urine can
be found at
www.biolan.com
.
Figure 4
Figure 5
Figure 3
Nutrient-rich liquids cannot be discharged
directly into the ground because they cause
excessive point-source nutrient loading.
