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4. OPERATION WITH SUPPLY GAS IDENTICAL TO THAT AVAILABLE
Check whether the indications on the data plate correspond to the gas distributed. Also check correspondence to the
indications below.
4.1 Checking the supply pressure (Fig. 2)
The supply pressure can be measured by means of a pressure gauge with a U-shaped pipe, or
of the electronic type with a minimum grading of 0.1 mbar.
- Unscrew the screw "A" from the pressure tap "B".
- Position the pressure gauge.
- Switch on the appliance and check that the pressure is the one intended: otherwise check on
the cause.
- At the end of the operation, reassemble the appliance and check on the connection.
4.2 Regulating the primary air (Fig. 3)
The primary air is regulated correctly if the stability of the flames is ensured, i.e. if flame lifts
do not appear with the burner cold and if there is no flame return with the burner hot.
The distance foreseen for regulation of the primary air is shown in Figures 3 and indicated in
tables 2. Unscrew the injector "E" with a 12 mm spanner and mount the appropriate injector.
Check the exact distance "X" for the primary air.
4.3 Regulating the pilot flame
Regulate and check whether the flame envelops the thermocouple and that its appearance is correct. If this is not the case,
check that the injectors mounted are the right ones (table 2).
4.4 Checking the main burner
Switch on the appliance and check that the flame, lighting and regulation of the minimum are correct. If this is not the case
check the injectors and the position of the primary air.
5. REGULATION FOR OPERATION WITH OTHER TYPES OF GAS
In order to perform this operation the injectors have to be changed and the reduced capacities and position of the primary air
regulated as indicated below.
Any modifications of the apparatus for use with other gases instead of the one foreseen are to be carried out by qualified
personnel only.
Once the apparatus has been modified, proceed by checking for any gas leaks, using the appropriate spray or soapy water -
never use a naked flame. Then change the identification label on the apparatus.
5.1 Replacing the injector of the main burner
In order to change the injector "C" (Fig. 3) remove, by pulling it, the control panel. Using a spanner unscrew the injector and
replace it according to table 2.
5.2 Replacing the injector of the pilot flame (Fig.4)
The pilot flame is only accessible after having removed the control panel. It has a fixed
injector and no regulation of the primary air is required. In order to change the injector "D"
unscrew the attachment nut "E" and replace the injector, according to table 2.
(Fig. 4)
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