Fornelli PGA 45 FIERO BL, User Manual

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Installation and operation instructions
HOBS
14
SETTING TO VARIOUS TYPES
OF GASES
If the type of gas you are going to use differs
from that your gas hob is set to, you will have
to replace gas nozzles. For that, do the fol-
lowing:
• Remove the support grids; take out fla-
me spreaders and gas burner caps.
• Unscrew “J” gas nozzles (Figure 8), using
an Allen wrench, and replace them with
appropriate ones (See Table “Diameters
of gas nozzles, mm”). The value of the di-
ameter is marked in the upper part of the
nozzle and indicated in mm.
• Carefully assemble all the components
of the hob in reversed order.
Reminder: if gas pressure differs from
that in the manufacturer’s plate you will
have to install an appropriate pressure
regulating device according to local stan-
dards of use of gas supply systems.
Adjustment of air flow to gas burners
Not required.
Fig. 8
Minimum flame adjustment
This adjustment is required upon replace-
ment of gas nozzles, or whenever necessary.
The sequence of actions is as follows:
• Ignite the gas burner; turn the control
knob to the position “Min. flame”.
• Take off the control knob.
• Insert a small-sized screwdriver with a
flat shrank into the valve core (see Figure
10). In valves equipped with a safety de-
vice of “gas control”, the adjusting screw
may be outside the valve core.
• Unscrew to increase the flame, and
screw in to decrease it. The flame has
been adjusted properly, if the flame is
uniform over the whole circumference
of the gas burner, and its height makes
approximately 3–4 mm.
• With liquefied gas used, the adjusting
screw must be screwed in all the way.
• Make sure that the flame does not ex-
tinguish with rapid changes from “Max.
flame” to “Min. flame” and vice versa.