Smeg GCS90XG User manual

Contents
1. INSTRUCTIONS FOR SAFE AND PROPER USE________________ 4
2. POSITIONING OF HOB ____________________________________ 6
3. ELECTRICAL CONNECTION _______________________________ 8
4. GAS CONNECTION_______________________________________ 9
5. ADAPTATION TO DIFFERENT TYPES OF GAS _______________ 11
6. FINAL OPERATIONS_____________________________________ 14
7. USING THE HOB ________________________________________ 16
8. LEANING AND MAINTENANCE ____________________________ 18
THESE INSTRUCTIONS ARE VALID ONLY FOR END USER COUNTRIES WHOSE
IDENTIFICATION SYMBOLS APPEAR ON THE COVER OF THIS MANUAL.
INSTRUCTIONS FOR THE INSTALLER: these are for the qualified
technician who must carry out a suitable check of the gas system,
install the appliance, set it functioning and carry out an inspection test.
INSTRUCTIONS FOR THE USER: these contain user advice,
description of the commands and the correct procedures for cleaning
and maintenance of the appliance.
3

Introduction
1. INSTRUCTIONS FOR SAFE AND PROPER USE
THIS MANUAL IS AN INTEGRAL PART OF THE APPLIANCE AND
THEREFORE MUST BE KEPT IN ITS ENTIRETY AND IN AN ACCESSIBLE
PLACE FOR THE WHOLE WORKING LIFE OF THE COOKING HOB. WE
ADVISE READING THIS MANUAL AND ALL THE INSTRUCTIONS THEREIN
BEFORE USING THE COOKING HOB. ALSO KEEP THE SERIES OF NOZZLES
SUPPLIED. INSTALLATION MUST BE CARRIED OUT BY QUALIFIED
PERSONNEL IN ACCORDANCE WITH THE REGULATIONS IN FORCE. THIS
APPLIANCE IS INTENDED FOR DOMESTIC USES AND CONFORMS TO
CURRENT REGULATIONS IN FORCE. THE APPLIANCE HAS BEEN BUILT TO
CARRY OUT THE FOLLOWING FUNCTIONS: COOKING AND HEATING-UP
OF FOOD. ALL OTHER USES ARE CONSIDERED IMPROPER.
THE MANUFACTURER DECLINES ALL RESPONSIBILITY FOR IMPROPER
USE.
DO NOT LEAVE THE PACKING IN THE HOME ENVIRONMENT. SEPARATE
THE VARIOUS WASTE MATERIALS AND TAKE THEM TO THE NEAREST
SPECIAL GARBAGE COLLECTION CENTRE.
IT IS OBLIGATORY FOR THE ELECTRICAL SYSTEM TO BE GROUNDED
ACCORDING TO THE METHODS REQUIRED BY SAFETY RULES.
THE PLUG TO BE CONNECTED TO THE POWER CABLE AND THE SOCKET
MUST BE THE SAME TYPE AND MUST CONFORM TO CURRENT
REGULATIONS.
THE SOCKET MUST BE ACCESSIBLE AFTER THE APPLIANCE HAS BEEN
BUILT IN.
NEVER UNPLUG BY PULLING ON THE CABLE.
IMMEDIATELY AFTER INSTALLATION CARRY OUT A BRIEF INSPECTION
TEST OF THE COOKING HOB, FOLLOWING THE INSTRUCTIONS BELOW.
SHOULD THE APPLIANCE NOT FUNCTION, DISCONNECT IT FROM THE
SUPPLY AND CALL THE NEAREST TECHNICAL ASSISTANCE CENTRE.
NEVER ATTEMPT TO REPAIR THE APPLIANCE.
ALWAYS CHECK THAT THE CONTROL KNOBS ARE IN THE POSITION
"ZERO" (OFF) WHEN YOU FINISH USING THE HOB.
4

Introduction
THE IDENTIFICATION PLATE, WITH TECHNICAL DATA, SERIAL NUMBER
AND MARKING IS CLEARLY VISIBLE UNDER THE CASING.
THE PLATE ON THE CASING MUST NOT BE REMOVED.
BEFORE CONNECTING THE DEVICE, MAKE SURE THAT IT HAS BEEN
REGULATED FOR THE TYPE OF GAS THAT WILL FEED IT, CHECKING THE
LABEL UNDER THE CASING.
DO NOT PUT PANS WITHOUT PERFECTLY SMOOTH AND FLAT BOTTOMS
ON THE COOKING HOB GRIDS.
DO NOT USE RECIPIENTS OR GRIDDLE PLATES THAT EXTEND BEYOND
THE EXTERNAL PERIMETER OF THE HOB.
THE HOB IS TO BE USED BY ADULTS ONLY. DO NOT LET UNSUPERVISED
CHILDREN PLAY WITH THE HOB.
THIS APPLIANCE IS MARKED ACCORDING TO THE EUROPEAN DIRECTIVE
2002/96/EC ON WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT
(WEEE).
THIS GUIDELINE IS THE FRAME OF A EUROPEAN-WIDE VALIDITY OF
RETURN AND RECYCLING ON WASTE ELECTRICAL AND ELECTRONIC
EQUIPMENT.
The manufacturer declines all responsibility for damage to persons
or things caused by non-observance of the above prescriptions or by
interference with any part of the appliance or by the use of non-original
spares.
5

Instructions for the installer
6
2. POSITIONING OF HOB
The following operation requires building and/or carpentry work so must
be carried out by a competent tradesman.
Installation can be carried out on various materials such as masonry,
metal, solid wood or plastic laminated wood as long as they are heat
resistant (T 90°C).
Never use silicone or other insulating products when installing the
appliance; use only the rubber gasket provided.
2.1.1 Attachment to support structure
Create an opening with the dimensions shown in the figure in the top
surface of the counter, keeping a minimum distance of 50 mm from the
rear border.
This appliance can therefore be mounted against walls higher than the
work surface on condition that a certain distance “X” be kept between the
appliance and the wall as shown in the figure so as to avoid damage from
overheating.
Make sure there is a minimum of 750 mm between the hot plate flames
and any shelf that may be installed directly above them.
Accurately position the gasket provided all around the outer edge of the
hole in the top surface as shown in the figures below, pressing it down so
as to make it adhere properly. For measurements, refer to the figure
depending on the hob model to be installed, bearing in mind that in both
models the front and rear sides must skim the hole. Secure the hob to the
counter with brackets A(supplied). Carefully trim any excess from border
Bof the gasket. The distances in the following drawing refer to the hole
on the inner side of the gasket.

Instructions for the installer
7
In case of installation on a hollow compartment with doors, a separating
panel has to be placed under the hob. Keep a minimum distance of 10
mm between the bottom of the unit and the panel surface. The panel
has to be easily removable to allow access in the event of technical
service.

Instructions for the installer
8
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 on the end of the supply cable and the wall socket must be the
same type and conform to the current electrical system regulations.
Check that the power line is adequately grounded.
On the power line, install an omnipolar cut-off device with contact cut-off
distance greater than or equal to 3 mm, located in an easily accessible
position near the unit.
Do not use reducers, adapters or shunts.
If the power cable is replaced, the wire section on the new cable must
not be less than 1.5 mm2(3 x 1.5 cable), keeping in mind that the end to
be connected to the hob must have the ground wire (yellow-green)
longer by at least 20 mm. Use only H05V2V2-F cable or similar which has
a maximum temperature of 90°C. Any replacement needed should be
carried out by a specialised technician who should make the mains
connections according to the following diagram.
L= brown
N= blue
= yellow-green
The manufacturer will not be liable for any damage to persons or
property caused by non-observance of the above instructions or deriving
from the tampering of even a single part of the hob.

Instructions for the installer
9
4. GAS CONNECTION
Connection to the gas mains may be made with a rigid copper pipe or
with a flexible pipe and conforming to the provisions defined by standard
regulations in force.
To facilitate connection, fitting Aon the rear of the appliance may be
adjusted laterally. For this purpose, loosen hexagon nut B, turn fitting A
to the desired position, and retighten hexagon nut B(tightness is ensured
by a biconical brass ring). Use a soapy solution to check for proper
tightness. Never use a free flame.
The hob has been inspected for G20 (2H) natural gas at a pressure of
20 mbar. For use with other types of gases, see Section “5.
ADAPTATION TO DIFFERENT TYPES OF GAS”. The gas intake fitting
is ½” gas external threaded (ISO 228-1).
Connection with rigid copper pipe:
the connection to the gas mains must
not provoke stress of any kind on the
hob.
Connection may be made by using
biconical adapter Dwith insertion of
gasket C(supplied).
Connection with flexible pipe: use
only flexible pipes conforming to
standard regulations in force, inserting
gasket C(supplied) between fitting A
and flexible pipe E.
The flexible pipe has to be installed so that pipe length does not exceed
1.5 meters of maximum extension. Make sure that the pipes do not touch
any moving parts or become damaged.

Instructions for the installer
10
4.1 Connection to LPG
Use a pressure regulator and make the connection to the tank according
to the provisions of standards regulations in force. Make sure that feed
pressure conforms to the levels shown in the table in paragraph “5.2
Regulation for LPG”.
4.2 Ventilation of rooms
The hob may be installed only in rooms with permanent ventilation, as
required by standards regulations in force. The room in which the hob is
installed must have sufficient air flow to satisfy the requirements of
normal gas combustion and of necessary air exchange in the room. The
air intakes, protected by screens, must be appropriately sized
(regulations in force) and placed so as not to be blocked in any way.
The room where the oven is installed should be suitably ventilated to
avoid overheating or excess humidity produced by cooking, and in the
case of lengthy use a window should be opened or the speed of any
ventilators should be increased.
4.3 Discharge of combustion products
Discharge of combustion products must be guaranteed by means of
hoods connected to a natural draught flue with certain efficiency, or by
means of forced aspiration.
An efficient aspiration system requires careful planning by a specialist
capable of installing it, respecting the positions and distances prescribed
by standards. After installation, the installer must issue a certificate of
conformity.

Instructions for the installer
11
5. ADAPTATION TO DIFFERENT TYPES OF GAS
Before performing any cleaning or maintenance work, detach the
appliance from the electrical socket.
The hob has been inspected for G20 (2H) natural gas at a pressure of
20 mbar. For functioning with other types of gas the nozzles must be
replaced and the primary air adjusted.
To replace the nozzles and regulate the burners, you have to remove the
top as described in the following paragraph.
5.1 Removing the hob
1. Remove all the knobs, the grids, the burner caps and the flame-caps;
2. remove the screws and the nuts Athat secure the burner supports;
3. remove plates B;
4. lift the hob from its seat;
5. replace the burner nozzles in accordance with the reference gas
chart;
6. regulate the primary air as described in paragraph “5.2 Regulation
for LPG”.

Instructions for the installer
12
5.2 Regulation for LPG
Loosen screw Aand push support Ball the way. Use a double head
wrench to remove nozzle Cand assemble the suitable one, following the
instructions indicated in the reference charts, with respect to the type of
gas to use. The screwing torque of the nozzle should never exceed
3 Nm. Reposition support Bso that nozzle Cis covered perfectly.
Move the Venturi tube Dto regulate the air flow until distance "X" is
reached indicated in the chart in paragraph "5.4 Regulation of primary air”
and then secure the tube by means of screw A. After the regulations
have been carried out, restore the seals with sealing wax or equivalent
material.
Burner Rated heating
capacity
(kW)
LPG – G30/G31 28/37 mbar
Nozzle
diameter
1/100 mm
By-pass
mm
1/100
Reduced
flowrate
(W)
Flowrate
g/h G30 Flowrate g/h G31
Auxiliary (1) 1.05 48 30 380 76 75
Semi-rapid (2) 1.65 62 30 380 120 118
Rapid (3) 3.1 85 43 750 225 222
internal (5) 1.15 42 26 380 84 82Double crown
external (5) 3.8 95 55 1200 276 271

Instructions for the installer
13
5.3 Regulation for natural gas
The hob has been inspected for G20 (2H) natural gas at a pressure of
20 mbar. To allow the unit to work with this type of gas, perform the same
operations described in paragraph “5.2 Regulation for LPG”, but choose
the nozzles and regulate the primary air for natural gas, as shown in the
following table and in paragraph "5.4 Regulation of primary air”. After the
regulations have been carried out, restore the seals with sealing wax or
equivalent material.
Burner
Rated
heating
capacity
(kW)
Natural gas – G20 20 mbar
Nozzle diameter
1/100 mm Reduced flowrate (W)
Auxiliary (1) 1.05 73 380
Semi-rapid (2) 1.65 92 380
Rapid (3) 3.1 126 750
internal (5) 1.05 73 380Double crown
external (5) 3.9 140 1200
5.4 Regulation of primary air
Referred to distance “X” in mm.
To identify the burners on your hob, refer to the drawings in point “6.3
Arrangement of burners on hob “
BURNER G20
20 mbar
G30/G31
28/37 mbar
Auxiliary (1) 1.5 2.0
Semi-rapid (2) 2.0 2.0
Rapid (3) 2.5 9.0
internal (5) 4.5 6.0Double crown
external (5) 3.0 10.0

Instructions for the installer
14
6. FINAL OPERATIONS
Having carried out the above adjustments, reassemble the appliance
following, backwards, the instructions in paragraph “5.1 Removing the
hob”.
6.1 Regulation of minimum for natural gas
Replace the components on the burner and slide
the knobs on the gas tap pins.
Light the burner and set it at minimum position.
Remove the knob and turn the regulation screw
inside or next to the gas tap pin (depending on
the model) until you get a suitable minimum
flame.
Replace the knob and check burner flame
stability: (rapidly turning the knob from maximum
to minimum position, the flame should not go
out).
6.2 Regulation of minimum for LPG
To regulate the minimum for LPG, completely tighten (clockwise) the
screw inside or next to the gas tap pin (depending on the model).
The diameters of the by-passes for each burner are given in table “5.2
Regulation for LPG”.
After having regulated the device with gas other than the one tested,
replace the label located on the guard with the one that corresponds to
the new gas. The label is inside the bag that contains the nozzles
provided.

Instructions for the installer
15
6.3 Arrangement of burners on hob
BURNERS
1 Auxiliary
2Semi-rapid
3Rapid
4Double crow
6.4 Lubrication of gas taps
After a while, the gas tap may become hard to turn or lock. If this
happens, it has to be cleaned inside and re-greased.
This must be done by a qualified technician.

Instructions for the user
16
7. USING THE HOB
Before turning on the burners, make sure that the burner rings, caps and
grids have been fitted correctly.
In the ultrarapid burner, notch Amust be aligned with pin B.
Grid Cprovided is intended for use with woks (Chinese pans).
Adapter Dcomes only with open grids models and is intended for use
with small sized vessels.
7.1 Ignition of the burners
The device is fit with electronic ignition. Simply press and simultaneously
turn the knob counter-clockwise on the low point flame symbol, until the
burner is ignited. Concerning models with valves, push the knob for
approximately 2 seconds in order to keep the flame burning and to
activate the safety device. The burner might go off when the knob is
released. In this case repeat the aforesaid operation keeping the knob
pressed for more than 2 seconds.
Double-crown burners comprise an auxiliary and a rapid burner,
controlled by two different knobs which permit to use both burners at the
same time or to select one or the other as required.
Should the burners go off accidentally in the models with valves, a safety
device will trip after approximately 20 seconds to block the gas outlet
even if the tap is open.

Instructions for the user
17
7.2 Practical advice for using the burners
For better burner performance and minimum gas
consumption, flat bottomed, even recipients must be used,
with covers and proportional in size to the burners (see
paragraph “7.3 Diameter of containers”).
To avoid overcooking or damage to the surface or to the
glass cover (only where applicable) top while cooking, all
recipients or griddles must be positioned within the
cooking hob perimeter and must be a minimum distance
of 3-4 cm from the knobs.
7.3 Diameter of containers
(*) Burner Ø min. and max. (in cm)
1Auxiliary 12-14
2Semi-rapid 16-20
3Rapid 22-26
4Double crown 12-34
(*) For burner reference numbers, see page 15.
7.4 Using a griddle plate
A few precautions are necessary if you wish to use a griddle plate:
•leave a gap of at least 160 mm between the edge of the griddle plate
and the side wall;
•if one of the burners close to the wooden rear wall is of triple flame
type, leave a gap of at least 160 mm between this wall and the edge of
the griddle plate;
•do not allow the burner flames to extend beyond the edge of the
griddle plate;
•operate the burners underneath the griddle plate for 10 minutes at
maximum power, then turn them down to the minimum setting. Never
use the griddle plate for more than 45 minutes.

Instructions for the user
18
8. LEANING AND MAINTENANCE
Never use a steam jet to clean the appliance.
Before any intervention, disconnect the power supply of the device.
8.1 Cleaning
Clean the cooking top regularly every time you use it, obviously after it
has cooled.
8.1.1 Regular daily cleaning of the hob
In order to clean and preserve the surface, always use specific products
only, which do not contain abrasive substances or chlorine-based acid
substances.
How to use: pour the product on a damp cloth and wipe the surface,
rinse thoroughly and dry with a soft cloth or deerskin.
8.1.2 Food stains or residues
Do not use metallic sponges or sharp scrapers: they will
damage the surface.
Use normal non-abrasive products and remove spots or
residuals with non-scratch sponges or, if need be, with wood or
plastic utensils.
Rinse thoroughly and dry with a soft cloth or deerskin.

Instructions for the user
19
8.2 Cleaning of cooking hob components
Grids, caps, flame cap crowns and burners can be
removed for ease of cleaning. Wash them in warm
water using a non-abrasive detergent, taking care
to remove all tough spots. Before remounting, allow
the components to fully dry out.
CAUTION: do not wash these components in a dishwasher.
In normal use of the hob, the stainless steel burner caps and pan-stands
tend to be burnished by the high temperature. Clean these parts using
very fine abrasive sponges or similar commercial products. Then use a
specific paste polish to restore the steel’s shine. Your local authorised
after-sales technician is able to supply professional products for
appliance cleaning and care.
8.2.1 Ignition plugs and safety devices
For good functioning of the lighting ignition plugs and the safety devices,
keep them very clean.
Check frequently and clean with a damp cloth when necessary.
8.2.2 The electric element
After use, to make sure that the surfaces are clean and long lasting, the
electric element must be treated with specific cleaning products which
are available on the market. This necessary operation prevents
oxidisation (rust formation).
8.2.3 The cover
Clean the glass or steel cover, where mounted, with warm water. Never
use abrasive sponges or detergents. To clean the rear part of the
cooktop, remove the cover by lifting out.
When finished cleaning, refit the cover making sure to insert it correctly.
Before lifting up the cover, dry out properly.
Never lower the cover when burners or electric elements are on or
still hot.