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27
Adapting the hob to different types of gas
To adapt the Hob for use with different types of gas, carry out the following instructions:
— remove the grids and burners
— insert the hexagonal spanner (supplied) into the burner support (Fig. 5)
— unscrew the injector and replace it with one suitable for the gas to be used (see
Table of gas consumption)
— carry out regulation of the burner.
Hexagonal spanner
Fig. 5
Regulating the burners
For maximum efficiency from the burners, the correct combustion of the flame is neces-
sary (see table of gas consumptions quota “X”). A good flame must be well aligned and
without yellow tips (Fig. 7/B). If there is insufficient air, the flame will be uneven with yel-
low tips (Fig. 7/A). If there is too much air, the flame will be very short and bright (Fig.
7/C). In these cases the combustion
must be adjusted by re-fitting the carburation tube to the Venturi (where there is insuffi-
cient air) or removing the carburation tube (in the case of too much air). To position the
carburation tube, the fixing screws must be loosened, and retightened when the sati-
sfactory combustion is obtained.
air
regul.
4 mm
4 mm
2 mm
6 mm
15 mm
13 mm
Working
burner
large back right
large front left
medium
small
double ring
maxi
Ø injector
1/100 mm
120
127
93
80
2x94
2x94
Ø injector
1/100 mm
80
84
61
54
2x65
2x65
Qn
kW
2,65
2,95
1,5
1,1
3,3
3,3
l/h
G20
252
281
143
105
314
314
g/h
G30
193
215
109
80
238
238
g/h
G31
189
211
107
79
236
236
Qn
kW
2,5
2,8
1,45
1,05
3,1
3,1
l/h
G25
277
310
161
116
314
314
Qmin.
kW
0,650
0,650
0,380
0,280
0,900
0,900
air
regul.
4 mm
4 mm
2 mm
6 mm
13 mm
13 mm
air
regul.
2 mm
2 mm
5 mm
4 mm
0 mm
0 mm
G20 G30 G25 G31
G30G20/G25 G20/G30 G25
Quota «X» depending
on type of gas
Table of gas consumption 1W = 0,860 kcal/h
air
regul.
5 mm
5 mm
7 mm
6 mm
15 mm
13 mm
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