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• The drain pipe must be siphoned (height 80 mm) to an open
drain "O" (air-break to drain ) conforms to EN61770,
whether for installation with wall discharge or floor grating
in order to prevent any back-flow from the sewage system
from reaching the piping inside the oven or oven chamber.
O
• Check the hoses and elbows on metal pipes for kinks or
pinching along the entire drain line.
• Make sure the drain line has a minimum gradient of 5° to
prevent water from collecting inside the system.
IMPORTANT
The drain system must be installed so that any
vapours from the open drain ("Air-Break") do not
enter the aeration vents under the appliance.
G.3
Gas exhaust system
G.3.1
Introduction
Gas-heated convection ovens are classified according to
"Construction type" on the basis of the combustion technology
used.
Each type of appliance must therefore be fitted with the
specific gas exhaust system stipulated by applicable
standards.
Before installing the exhaust system, you must therefore:
• identify the "Construction type" of your oven model by
referring to F.1 Technical data paragraphs or the appliance
identification plate;
• select the construction type diagram from those illustrated
below featuring the type of gas exhaust system needed to
evacuate the exhaust gas from the installation site.
G.3.2
Installation of accessories
The accessories may be easily mounted using the figures and
corresponding key illustrated below as a reference.
The fixing screw holes for accessory "A" are 3.5 mm in
diameter.
These holes must be drilled on site where marked on top of the
oven.
G.3.3
Gas exhaust system
Before installing the system, make sure the extraction capacity
of the fumes exhaust system is greater than the exhaust gas
generated by the appliance, as stipulated by applicable
standards.
In the case of exhaust pipes installed under an extractor hood,
make sure the end of the exhaust pipe is positioned the
specified distance from the bottom edge of the filters on the
extractor hood as shown in the figure below.
This distance is defined by diameter "D" of the exhaust pipe.
24
AIR-BREAK
C
• CONSTRUCTION TYPE A1: SOLUTION 1 (direct dis-
charge under extractor hood without manifold)
C
DIRECT EXHAUST UNDER EXTRACTOR HOOD
C = Oven convector gas exhaust outlet
* = The vapours can reach up to 500 ℃
• CONSTRUCTION TYPE A1: SOLUTION 2 (discharge
under extractor hood with manifold)
2D
*
A
EXHAUST PIPE WITH MANIFOLD UNDER EXTRACTOR
HOOD
A = Manifold – accessory
C = Oven convector gas exhaust outlet
E = Adapter ring for commercial ducting
G = Fixing screws
* = The commercial pipes must withstand up to 350 ℃
IMPORTANT
Make sure any extension ducting and the filters
inside the extractor hood are made from nonflam-
mable
materials
generated can reach extremely high temperatures.
*
Tmax=500˚C
ø D
E
C
G
since
the
exhaust
gasses
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