Smeg Pgf64-4 Manual

							Instructions for the installer
31
6.2 Fixing to the electric model support structure
Create an opening with the
dimensions shown in the figure in the
work surface of the piece of furniture.
The lower part of the casing must be
fully accessible after the appliance
has been installed.
1)
A (mm)B (mm)C (mm)D (mm)E (mm)L (mm)X (mm)Y (mm)
min 150min 460min 75020÷40min 50620592488
Make sure that there is a minimum of  750 mm between the hob ring flames and
any shelves placed directly above them (Fig. 1). Furthermore, this kind of
appliance needs a milling on the hob top of 3 mm in depth; the measurements
are indicated in figure 4 (detail A of figure 2).
Before positioning the hob, the supplied adhesive sponge “E” should be spread
out flat over the milling surface (fig. 2). Carry out this operation by supporting the
hob on the isolating seal and using screws and clamping brackets (Fig. 3
sequence) to fix the hob to the support structure, in order to obtain the complete
flatness.  The small brackets in figure 3 are only positioned after having
mounted the hob.
 
2)
 
3)
 4)
If laminated surfaces are used, it is advisable to spread a layer of anti-infiltration
“primer” across the milled surface.
Important: Other types of installation are possible if supervised by the
manufacturer! 
						

							Instructions for the installer
32
Obstructions: location of gas and electric connectors (measured in mm).
IMPORTANT: if the appliance is mounted on a unit, make sure that a separating
shelf is installed, as shown in the figure.
However, if the appliance is on an oven installed under the hob, there is no need
to install a separating shelf.
If installed on top of an oven, the latter must be equipped with a cooling fan. 
						

							Instructions for the installer
33
6.3 Electrical connection
Make sure that the voltage and capacity of the power line conform to the data
shown on the plate located under the casing. Do not remove this plate for any
reason.
The plug at the end of the supply cable and the wall socket must be of the same
type and must conform to the applicable legislation on electrical installations.
Make sure that the supply line is suitably earthed.
Fit power line with an omnipolar circuit breaker with a contact opening gap equal
to or greater than 3 mm in an easily accessible position close to the hob.
Avoid the use of adapters and shunts.
If the power cable is replaced, the cross-
section of wires in the new cable must be
no less than 0.75 mm2 (3 x 0.75 cable),
remembering that the end for connection to
the appliance must have a longer earth
wire (yellow/green) 
, longer by at least 20 mm. Only use a H05V2V2-F or similar resistance cable to
the maximum temperature of 90°C. Its replacement must be carried out be a
specialised technician who must carry out the network connection following the
diagram below.
L = brown
N - blue
  = yellow/green
The manufacturer cannot be held liable for damage to persons or things caused
by non-observance of the above directions or by interference with any part of the
appliance. 
						

							Instructions for the installer
34
6.4 Ventilation in the premises.
The room containing the appliance should have a permanent air supply in
accordance with the standards in force. The room where the appliance is
installed must have enough air flow needed for the regular combustion of gas
and the necessary air change in the room itself. The air vents, protected by
grills, must be the right size to comply with current regulations and positioned so
that no part of them is obstructed, not even partially.
The room must be kept adequately ventilated in order to eliminate the heat and
humidity produced by cooking: in particular, after prolonged use, you are
recommended to open a window or to increase the speed of any fans.
6.5 Extraction of the combustion products
Combustion products must be extracted by means of hoods connected to a
natural draught chimney whose efficiency is assured or via forced extraction. An
efficient extraction system requires precision planning by a specialist qualified in
this area and must comply with the positions and distances indicated by the
applicable standards. When the job is complete, the installer must issue a
certificate of conformity. 
						

							Instructions for the installer
35
6.6 Gas connection
Connection to the gas supply network can be made using a rigid copper hose or
a flexible steel hose with a continuous wall and in compliance with the guidelines
established by the applicable standard. 
Once the operation is complete, check the hose fittings for leaks using a soapy
solution; never use a flame. 
The hob is preset for natural gas G20 (2H) at a pressure of 20 mbar. To set it up
for supply using other types of gas, see “3. ADAPTATION TO DIFFERENT
TYPES OF GAS”. The gas inlet connection is threaded ½” external gas (ISO
228-1).
Connection with a rigid copper
hose:The connection to the gas supply
network must be made in such a way that it
does not cause stresses of any type on the
appliance. 
The connection can be made using the
adapter unit D with double cone, always
inserting gasket C  (provided) in between.
Connection with a flexible steel
hose:Use only continuous wall stainless
steel hoses that comply with current
legislation, making sure to always insert
the supplied gasket C between the
connection A and the flexible hose B.
Installation with the flexible hose must be carried out so that the length of the
piping does not exceed 2 metres when fully extended; make sure that the hoses
do not come into contact with moving parts and that they are not crushed in any
way.
6.7 Connection to liquid gas
Use a pressure regulator and make the connection on the gas cylinder following
the guidelines set out in the regulations in force.
Make sure that the supply pressure complies with the values indicated in the
table shown in the paragraph 7.2 Burner and nozzle characteristics table”.  
						

							Instructions for the installer
36
7. ADAPTATION TO DIFFERENT TYPES OF GAS
Before carrying out the following operations, disconnect the appliance from the
power supply.
The appliance is preset for natural gas G20 (2H) at a pressure of 20 mbar. In the
case of operation with other types of gas, the burner nozzles must be changed
and the minimum flame adjusted on the gas taps. To change the nozzles,
proceed as described in the following paragraphs.
7.1 Replacement of the cooking hob nozzles
1 Extract the pan racks and remove all the caps and flame-spreader crowns;
2 Unscrew the burner nozzles with a 7 mm socket spanner;
3 Proceed with the replacement of the burner nozzles according to the gas to
be used (see paragraph “7.2 Burner and nozzle characteristics table”);
4 Replace the burners in the correct position.
The nozzles for using city gas (G110 – 8 mbar) are available from authorised
service centres. 
						

							Instructions for the installer
37
7.2 Burner and nozzle characteristics table
Burner
Rated
heating
capacity
(kW)
LPG – G30/G31  28/37 mbar
Nozzle
diameter
1/100 mmBy-pass
mm
1/100Rated
capacity
(W)Rated
g/h G30Rated
g/h G31
Auxiliar y (1)1.0550284007675
Rapid (2)2.507942800182179
Ultra-rapid (3)3.90100631600284279
Burner
Rated
heating
capacity
(kW)
Natural gas – G20 20 mbar
Nozzle diameter
1/100 mmReduced capacity
(W)
Auxiliar y (1)1.0572400
Rapid (2)2.50108800
Ultra-rapid (3)3.901351600
Burner
Rated
heating
capacity
(kW)
City gas - G110  8 mbar
Nozzle diameter
1/100 mmReduced capacity
(W)
Auxiliar y (1)1.05145400
Rapid (2)2.50230800
Ultra-rapid (3)3.903401200
7.3 Arrangement of the burners on the cooking hob
HOB
1  Auxiliary
2  Rapid
3  Ultra-rapid 
						

							Instructions for the installer
38
8. FINAL OPERATIONS
After making the adjustments described above, reassemble the appliance by
following in reverse the instructions reported in paragraph 7.1 Replacement of
the cooking hob nozzles.
After adjustment with a gas other than the preset one, replace the label on the
casing of the appliance with the label corresponding to the new gas. This label
can be obtained from the nearest Authorised Service Centre.
8.1 Adjusting the minimum for town and natural gas
Light the burner and turn it to the minimum
position. Extract the gas tap knob and turn
the adjustment screw inside or next to the
tap rod (depending on the model) until the
correct minimum flame is achieved.
Refit the knob and verify that the burner
flame is stable (when turning the knob
rapidly from the maximum to the minimum
position the flame must not go out).
Repeat the operation on all the gas taps.
8.2 Adjusting the minimum setting for liquid gas
To adjust the minimum setting with liquid gas, you must tighten the screw inside
or next to the tap rod (depending on the model) fully in a clockwise direction.
The diameters of the by-passes for the individual burners are given in the
paragraph “7.2 Burner and nozzle characteristics tables.
8.3 Lubrication of gas taps
Over time the gas taps may become difficult to turn and get blocked. Clean them
internally and replace the lubrication grease. This procedure must be carried
out by a specialised technician.