wallas 88DU Montage-, Bedienungs- Und Wartungsanleitung Seite 80

FUEL
200 mm
400 mm
300 mm
Safety distances
Length difference of the pipes
Swan neck
Installation
FLUE GAS CONNECTIONS
Flue gas lead-throughs
Flue gas lead-throughs 2467, 3468 and the closable model 2460 are suitable for
this device.
All fl ue gas lead-throughs are stainless steel. The ø 28/45 mm lead-throughs fi t the
fl ue gas pipe 2448.
General instructions for fl ue gas connections
LOCATION
Air must always fl ow freely past the lead-through. Install the lead-through on a
straight surface. Avoid corners or recessions where wind pressure can disturb the
functioning of the device.
The minimum distance of the lead-through from the fuel tank's fi ller hole is 400
mm.
The minimum distance of the side lead-through from the surface of the water is 300
mm. Especially in sail boats it should be noted that the lead-through must never be
submerged.
It is recommended to place the lead-through in the side as far back as possible or
directly in the transom.
INSTALLATION
When preparing the installation cut-out for the lead-through, it is a good idea to use
the lead-through as a model for the cut-out; especially if the lead-through is circu-
lar. If necessary, seal the installation cut-out with silicone in addition to the lead-
through seal. Note! Do not use silicone on a wooden boat.
The fl ue gas pipe must be 30–50 mm longer than the exhaust pipe. This way the
fl ue gas pipe will stay in place in the lead-through more fi rmly. The measurement
depends on the overall length of the piping.
The side lead-through must always be equipped with a so-called swan neck sec-
tion.
The swan neck will effectively prevent splash water from getting to the device.
The highest point of the swan neck must always be above the surface of the water.
The stove will go out, if the fl ue gas lead through is submerged.
OTHER THINGS TO NOTE
Flue gas is hot. Always ensure that there is nothing that is susceptible to heat dam-
age within 200 mm of the effective area of the fl ue gases (e.g. ropes, fenders or the
side of another boat).
All lead-throughs raise the temperature of their surroundings. A wooden deck, in
particular, may dry due to the heat. Remember that the surface of the lead-through
is hot during use.
The fl ue gas pipe must be made of stainless steel 2448.
If necessary, seal the connections between the fl ue gas pipe and the lead-through
with heat-resistant silicone.
When washing the boat with a pressure washer, never aim the water
jet at the lead-through as the device may get wet.
88DU
- 80 -
GB
490070GB