12
Manuale d’installazione e d’uso
During initial installation and during maintenance or adaptation to another type of gas nominal heat input must be
measured. It can be measured by using the volumetric method with the aid of a litre counter or a chronometer.
After checking connection pressure and the diameter of the burner injectors, measure the hourly flow of the gas and
compare the recorded value with the value set out in the specifications table under the heading “gas consumption”.
Deviation of ± 5% from nominal value is permitted. The appliance must be supplied with one of the types of gas
whose properties and pressure are set out in the table below:
C
hecking thermal power
TIPI DI GAS
PRESSIONE IN mbar.
NOM.
MIN MAX
GAS METANO G20
20
18
25
G.P.L. G30/31 28-30/37 25/25 35/45
Connect the appliance to a special gas pipe with an internal
diameter of at least 16 mm for G1/2” connections and a
diameter of at least 20 mm for G3/4” connections. The cou
-
pling must be metal and the pipe may be rigid or flexible.
Make sure that the flexible metal pipe that is fitted to
the gas coupling does not touch overheated parts of the
appliance and is not twisted. Use fixing clips that comply
with installation standards. Fit stopcocks or gate valves whose internal diameter is not less than the above con
-
necting pipe. After connecting the pipe, make sure that the joints and couplings have no leaks. Use soapy water
or a purpose-designed foam product to detect leaks.
NEVER USE NAKED LIGHTS!
Gas supply pressure must be measured at the pressure point (Ref. P) after removing the sealing screw . Use a
flexible pipe, connect a gauge e.g. a liquid gauge that is accurate to 0.1 mbar) to the pressure point (and measure
C
hecking gas pressure
the intake pressure whilst the appliance is operating. If
the pressure reading does not fall within the upper and
lower limits indicated on the table, the appliance cannot
be installed.
Switch off the appliance, disconnect the gauge and close
the seal screw and contact the gas company to test main
gas supply pressure.
A pressure adjuster may have to be fitted upstream of
the appliance.
REPLACING MAIN BURNER NOZZLE
•
Lift up the grid above the hob and lift up the black covers and flame separators to check that the nozzles are
screwed down correctly onto the holders.
•
Unscrew the nozzles and replace them with those required for the selected gas as specified on the rating
plate The nozzles are marked in hundredths of a millimetre.
After converting or adapting for the gas, the plate specifying the type of nozzles used MUST be affixed above the
rating plate.
1.5
Connecting to a different type of gas
1. INSTALLATION
EN
