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34 - INSTALLATION 91477A540/A
issue a certificate of conformity.
Adaptation to different types of gas
If other types of gas are to be used, the nozzles
must be replaced and the primary air must be
adjusted. The top of the hob has to be removed
in order to replace the nozzles and adjust the
burners.
Removing the hob top
1. Disconnect the appliance from the electrical
and gas supplies.
2. Pull the knobs upwards to remove them.
3. Remove the pan support grids from the hob.
4. Remove the burner caps, flame-spreader
crowns and relative supports from under
each burner.
5. Remove the appliance from the cabinet.
6. Remove the reinforcing bracket by
unscrewing the relative screw. The bracket is
located at the back of the appliance. NB:
some models are fitted with two brackets.
7. Unscrew the fixing screws and remove the
plates for each burner.
8. Remove the seals under the plates.
9. Remove the hob.
Replacing nozzles
The following should be carried out for each
1 Extraction using a hood
2 Extraction without a hood
A Extraction with a single natural draught
chimney
B Extraction with a single chimney with
extractor fan
C Extraction directly outdoors with wall- or
window-mounted extractor fan
D Extraction directly outdoors through wall
Air
Combustion products
Extractor fan
In order to be able to replace the
nozzles, the appliance must be
removed from the built-in unit.
Appliance factory set for: natural gas
G20 at a pressure of 20 mbar.
1A1A
1B1B
2C2C
2D2D
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