Metos 4241001, Operating Instructions Manual, Page: 78 / 90

10.1 • GAS CONNECTION
The section of the gas supply pipe must be
chosen according to the type of gas and the
consumption of the appliance to be connected.
The system must be designed and installed in
accordance with current regulations. The gas
c o n n e c t i o n o n t h e o v e n i s R 1 / 2 ” o r R
3 / 4 ” , a n d t h i s s e c t i o n m u s t n e v e r b e
reduced.
A fast acting shutoff valve must be installed
on the gas inlet line to the oven. The valve
must be type test approved in accordance
with current regulations.
The connection to the gas main can be
permanent or detachable; if flexible metal tube
is used, this should be made of a stainless
and corrosion resistant material (rubber hose
is not recommended).
If when making the connection you use any
sealing materials, they must be type test
approved for this purpose.
10.2 • LEAK TEST
All connections between the mains and the
appliance must be tested for leakage. The
recommended method is to use a proprietary
leak detection spray; alternatively, a non-
corrosive foamy liquid of any general
description can simply be brushed onto the
fittings: whichever method is used, no bubbles
should appear.
Never under any circumstances test for
gas leaks with a naked flame!
10.3 • EXHAUSTING FLUE GASES
Model with 5, 6 and 7 pans GN 1/1
Since this appliance due to its capacity has
installation type A3, it is not necessary to
connect it to a stack for extracting the flue
gases. The flue gases can be exhausted into
the installation room. It is especially important
to have good, continuous ventilation!
Remaining models
As these ovens have a power rating of
>14 kW, type B installation is required. The
installer must select one of the methods
described below, according to the design
of the building and of the room where the
appliance is sited. The diameter of the flue
pipes must be as indicated in the installation
diagrams.
Warning:
flue gases may reach temperatures of 400
°C!
F u m e s m u s t n e v e r b e d u c t e d a w a y
utilizing an extraction system!
C l e a r t h e g a s s u p p l y s y s t e m o f a n y
machining debris before connecting the
oven!
10 • GAS CONNECTION PROCEDURES
13
900-----rev00
9.1 • Und er no c irc um s ta nc es m u st vents A
and B be shut, blocked or ducted into
other pipes.
A - Vent to extract vapours from the oven
B - Safety vent
9 • VENTS
A B