9
Adapting the hob for Different Types of Gas
To adapt the hob to a different type of gas than that for which
it was designed, (see the sticker under the hob or on the
packaging), the burner nozzles must be changed, as follows:
• Remove the pan supports and slide the burners out of the
cooktop.
• Unscrew the nozzles using a 7mm socket wrench and
replace them with those for the new type of gas. (See
table 1, “Burner and Nozzle Specifications”).
• Reassemble the parts following the instructions in reverse
order.
• On completing the operation, replace the old rating label
with the one showing the new type of gas; the sticker is
available from our Service Centre.
If the gas pressure is different than that prescribed, a pressure
regulator must be installed at the source, in compliance with
national standards governing the use of piped gas regulators.
Regulation of Air Supply to the Burner
The burners do not need a primary air regulator.
Minimum Regulation
• Turn the gas valve to minimum.
• Remove the knob and turn the regulator screw (positioned
either on the side of the top or inside the shaft) clockwise
until the flame becomes small but regular.
N.B.: In the case of liquid gas, the regulation screw must be
fully screwed in (clockwise).
• Make sure that, when the knob is turned rapidly from high
to low, the flame does not go out.
• In the event of a malfunction on appliances with the
security device (thermocouple) when the gas supply is
set at minimum, increase the minimum supply levels using
the regulator screw.
Once the adjustment has been made, apply sealing wax, or
a suitable substitute, to the old seals on the by-pass.
Table 1
Liquid Gas Natural Gas
Burner Diameter
(mm)
Thermal power
kW (p.c.s.*)
By-Pass
1/100
Nozzle
1/100
Flow*
g/h
Nozzle
1/100
Flow*
l/h
Nomin. Ridot. (mm) (mm) *** ** (mm)
Fast (R) 100 3,00 0,70 41 86 218 214 116 286
Semi Fast (S) 75 1,90 0,40 30 70 138 136 106 181
Auxiliary (A) 55 1,00 0,40 30 50 73 71 79 95
Triple Crown (TC) 100 2,50 0,80 48 83 182 179 124 238
Supply
Pressures
Nominal (mbar)
Minimum (mbar)
Maximum (mbar)
28-30
20
35
37
25
45
20
17
25
* At 15°C and 1013 mbar-dry gas
** Propane P.C.S. = 50.37 MJ/kg.
*** Butane P.C.S. = 49.47 MJ/kg.
Natural P.C.S. = 37.78 MJ/m
3
Characteristic of the burners and nozzles
This appliance conforms with the following European
Economic Community directives:
- 73/23/EEC of 19/02/73 (Low Voltage) and subsequent
modifications;
- 89/336/EEC of 03/05/89 (Electromagnetic Compatibility)
and subsequent modifications;
- 90/396/EEC of 29/06/90 (Gas) and subsequent
modifications;
- 93/68/EEC of 22/07/93 and subsequent modifications.
(12 pages)
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