024-03 - Gas cooker
7
Before commissioning the appliance
Before commissioning the appliance, remove the protecti-
ve wrapping.
Start-up
Before starting the appliance up, check that its specifica-
tions (category and type of gas used) match those of the
family and group of the gas available locally.
If not, adapt the appliance to the gas family or group re-
quired (see paragraph “Running the appliance on other
types of gas”, page 8).
To start the appliance up, see the instructions for regular
use.
Testing the power rating
Use the specific nozzles for the nominal capacity on the
appliance.
Capacity can be of two types:
- nominal, as given on the data plate;
- minimum.
These nozzles are shown in “TECHNICAL DATE” table 1.
The following are the operating pressure tolerances to ob-
tain the nominal power according to the agreed nozzles:
- from 15 to 22.5 mbar for gases of the second family
- from 25/35 to 35/40 mbar for gases of the third family
(Butane-Propane).
The appliance will not work outside the above pressure th-
resholds.
To adjust the capacity to its minimum value, use the data
in tables 1.
If you wish to check the nominal capacity further, you may
do so using a gas meter according to the so-called ”volu-
metric method”. It is normally enough, however, simply to
check that the nozzles are functioning correctly.
Checking input pressure (Fig. 2)
Input pressure should be measured using a gauge (e.g. a
gooseneck pipe, min. resolution 0.1 mbar).
Remove screw (F) from the pressure socket and connect it
to the tube on the gauge; after measuring, the screw
should be retightened absolutely airtight (F).
Checking power rating using the
volumetric method
Using a gas meter and a chronometer, you can read the
volume of gas output per time unit.
The correct volume will be the value of “E” expressed in li-
tres per hour (It/hr) or litres per minute (It/min).
The following formula is used to calculate the value of “E”:
Capacity should only be measured when the appliance is
at a standstill.
The heat value can be obtained from your local Gas
Board. To obtain the nominal and minimum capacities in
relation to the nominal pressure, consult table 1.
Capacity
Heat value
E =
COMMISSIONING THE APPLIANCE
Wiring
Before connecting the appliance to the electricity supply,
check the following:
- make sure the mains supply voltage matches the value
on the data plate;
- make sure the appliance is properly earthed.
- Make sure the shielding of the connections can stand
up to the nominal capacity.
Also an omnipolar switch with at least a 3 mm. contact
aperture should be installed upstream of the appliance,
so that it can be completely disconnected from the mains.
Compulsort automatic safety switches can be used for
this purpose. The omnipolar switch must be located near
the appliance and easy to reach.
The connecting cable used for the appliance must be
suited in section to the particular version and to its nomi-
nal capacity. Use an H07-RN-F type cable.
Unipotential
The appliance must be connected up to a unipotential sy-
stem. A connection terminal marked “unipotential” is pro-
vided for this purpose on the underside of the appliance,
near the lead-wire entry area.
