V-ZUG GAS411 Series User manual

Operating instructions
Multi-slider GAS411/421
Gas hob

Thank you for choosing to buy one of our products. Your appliance is made to high
standards and is easy to use. Nevertheless, please take the time to read these operating
instructions in order to familiarize yourself with the appliance and get the best use out of
it.
Please follow the safety precautions.
Modifications
Text, diagrams and data correspond to the technical standard of the appliance at the
time these operating instructions went to press. The right to make technical modifications
for the purpose of the further development of the appliances is reserved.
Validity
The model number corresponds to the first alphanumerics on the identification plate.
These operating instructions apply to:
Type Model number Appliance class
GAS411GSBZ 31063 Class 3
DIN EN 30-1-1
GAS421GSBZ 31064
Variations depending on the model are noted in the text.
© V-ZUG Ltd, CH-6302 Zug, 2020
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Contents
1 Safety precautions 4
1.1 Symbols used......................................................... 4
1.2 General safety precautions.................................. 4
1.3 Appliance-specific safety precautions ............... 5
1.4 Instructions for use................................................ 5
1.5 Warnings ................................................................. 7
2 Using for the first time 9
3 Appliance description 10
3.1 Appliance overview .............................................10
3.2 Operating and display elements.......................11
3.3 Gas burners..........................................................12
3.4 Automatic re-ignition ...........................................12
3.5 Safety system .......................................................12
3.6 Cookware ..............................................................13
4 Operating the appliance 15
4.1 Switching the appliance on and off..................15
4.2 Selecting a cooking zone...................................15
4.3 Switching a cooking zone off ............................15
4.4 Residual heat indicator.......................................15
4.5 Overview of power levels ...................................16
4.6 Melting function....................................................16
4.7 Keep warm function ............................................16
4.8 Simmer function...................................................17
4.9 Automatic boost...................................................17
4.10 Operating time .....................................................17
4.11 Timer ......................................................................19
4.12 Childproof lock.....................................................19
4.13 Pause cooking .....................................................20
4.14 Restore function...................................................20
4.15 Wipe protection....................................................20
5 User settings 21
5.1 Changing user settings ......................................21
6 Care and cleaning 22
6.1 Care........................................................................22
6.2 Cleaning ................................................................22
7 Trouble-shooting 23
8 Accessories and spare parts 25
9 Technical data 26
9.1 Product fiche .........................................................26
9.2 Food safety contact..............................................26
10 Disposal 27
11 Index 28
12 Notes 29
13 Service & Support 31

4
1 Safety precautions
1.1 Symbols used
Denotes important safety precau-
tions.
Failure to observe said precautions
can result in injury or in damage to
the appliance or fittings!
Information and precautions that
should be observed.
Information on disposal
Information about the Operating In-
structions
▸ Indicates step-by-step instructions.
–Describes how the appliance reacts
to the steps taken.
▪Indicates a list.
1.2 General safety precautions
▪Read the operating instruc-
tions before using the appli-
ance for the first time.
▪According to the Gas Safety
Ordinance of Hong Kong, any
gas installation works, includ-
ing the installation of appli-
ances and connection tubing,
must be undertaken by re-
gistered gas installers who
are registered for the appro-
priate classes and are em-
ployed by registered gas con-
tractors.
▪This appliance can be used
by children aged 14 and
above and by persons with
reduced physical, sensory or
mental capabilities, or lack of
experience and/or know-
ledge, provided they are su-
pervised or have been in-
structed on the safe use of
the appliance and have un-
derstood the hazards in-
volved. Children shall not play
with the appliance. Cleaning
and user maintenance shall
not be undertaken by children
without supervision.
▪If an appliance is not
equipped with a mains cable
and a plug or other means for
disconnecting from the mains
with a contact opening on
each pole complying with the
conditions of overvoltage cat-
egory III for full isolation, an
isolating device must be in-
corporated into the perman-
ently installed electrical install-
ation in accordance with the
installation regulations.
▪If the mains cable or gas sup-
ply line of this appliance is
damaged, it must be replaced
by the manufacturer or its

1 Safety precautions
5
Customer Services or a re-
gistered gas fitter in order to
avoid hazard.
1.3 Appliance-specific safety
precautions
▪WARNING: If the surface is
cracked, switch off the appli-
ance, turn off the stop-cock
and disconnect the appliance
from the mains to avoid the
possibility of electric shock.
Have a registered gas fitter
disconnect the appliance
from the gas supply.
▪WARNING: The appliance
and its accessible parts get
hot during use. Do not touch
the burners, the pan supports
or the surface of the hob.
▪WARNING: The cooking pro-
cess should always be super-
vised. Shorter cooking pro-
cesses, in particular, must be
supervised the entire time.
▪WARNING: It can be danger-
ous to leave the hob unatten-
ded when cooking with fat or
oil, as this can lead to fires.
NEVER attempt to extinguish
a fire with water. Switch the
appliance off and carefully
smother the flames with a lid
or a fire blanket.
▪WARNING: Never store ob-
jects on the hob. Risk of fire!
▪Do not operate the appliance
using an external time switch
or a separate remote control
system.
▪Under no circumstances use
a steam cleaner to clean this
appliance.
▪All gas tightness tests should
be performed with a soap
solution. Never use a naked
flame to test for leaks!
▪Do not store any flammable
materials, sprays or pressur-
ized containers inside the
stove cabinet.
▪When installing a built-in gas
hob on top of a stove cabinet,
please check that there is
provision for ventilation at the
cabinet to ensure proper op-
eration of the gas hob.
1.4 Instructions for use
Operate the appliance competently
and follow the advice given in the
«Appliance description» (see page
10) section.
Before using for the first time
▪The appliance must be installed and
connected to the gas and electricity
supply in accordance with the separate
installation instructions. Have a re-
gistered gas fitter carry out the neces-
sary work.

1 Safety precautions
6
Correct use
▪CAUTION: This appliance is only inten-
ded for cooking purposes. It may not
used for other purposes, such as heat-
ing a room.
▪The appliance is designed for use in
the home for preparing food. No liability
is assumed for any damage caused by
improper use or incorrect handling.
▪Any repairs, modifications or manipula-
tions to the appliance, especially any
gas pipes or electrically live parts, may
only be carried out by the manufacturer,
its Customer Services or a registered
gas fitter. Repairs if carried out incor-
rectly may cause serious injury, dam-
age to the appliance and fittings, as
well as affect the functioning of the ap-
pliance. If the appliance is not working
properly or in case a repair is needed,
follow the instructions given in the «Ser-
vice and support» section. Contact our
Customer Services if necessary.
▪Use original spare parts only.
▪Retain these operating instructions for
future reference. If you sell the appli-
ance or pass it on to a third party,
please ensure these operating instruc-
tions accompany the appliance, to-
gether with the installation instructions.
▪The appliance corresponds to recog-
nized technology standards and the rel-
evant safety regulations. However,
proper use of the appliance is essential
to avoid damage and accidents. Please
therefore follow the precautions given in
these operating instructions.
▪The heated surface of the hob, the pan
supports and the burners will remain
hot for some time after the appliance is
switched off and will cool down only
slowly to room temperature. Please al-
low sufficient time for the appliance to
cool down before, for instance, cleaning
it.
▪The top panel of this cooker is made of
ceramic glass, which is safer than nor-
mal glass for this application. Please
observe the following safety precautions
for using a gas hob with a glass top
panel in order to prevent the glass top
panel from breaking:
1. Clean the burner assembly frequently
to maintain a clear gas passage on
the flame distributor. Clean the flame
distributor after any spillage of food or
liquid once the burner assembly has
cooled down.
2. Turn off the gas appliance immediately
if abnormal noise propagates from the
gas appliance and contact the gas
supply company or gas hob importer
for inspection.
3. Do not use oversized utensils for
cooking.
4. Do not impact the glass surface with
hard objects or place heavy objects
on the glass surface.
▪Despite using the «TIMER» function, the
user should not leave the gas stove un-
attended while cooking.
Caution: Risk of deflagration!
▪Unburned gas can accumulate in en-
closed areas. Please read the warnings
carefully.
Caution: Risk of toxic fumes!
▪A gas hob produces heat, moisture and
combustion by-products in the room in
which it is used. Ensure the kitchen is
well ventilated, especially when the hob
is in use: keep natural ventilation holes
open or install a mechanical ventilation
device (extractor hood). Prolonged in-
tensive use of the appliance may call
for additional or more effective ventila-
tion: open a window or increase the ex-
traction rate of the range hood.
Caution: Fire hazard!
▪The cooking zones become very hot.
Do not rest any objects on the hob.

1 Safety precautions
7
▪Do not store or use corrosive, chemical
or flammable cleaning agents or
products underneath or near to this
household appliance.
Caution: Burns hazard!
▪Overheated fat and oil can easily catch
fire. Never attempt to extinguish burning
oil or fat with water. Danger of explo-
sion! Smother the flames with a fire
blanket. Keep doors and windows
closed.
▪Exercise care when touching cookware
handles as they can become hot.
Caution: Risk of injury!
▪Cookware that is damaged, is not the
right size or is not positioned correctly
can cause serious damage. Check the
cookware is fit for purpose before use.
Centre the cookware in the middle of
the relevant cooking zone. Follow the
tips and warnings that come with suit-
able cookware.
▪In the event of a malfunction, turn off
the gas and electrical supply to the ap-
pliance. Call our Customer Services.
▪Do not tamper inside the appliance. If
necessary, please call our Customer
Services.
▪Use of unsuitable protective guards can
cause accidents.
▪Keep pets away from the appliance.
Caution: Risk to life!
▪Packaging materials, e.g. plastic film
and polystyrene, can be dangerous for
children. Danger of suffocation! Keep
packaging material away from children.
How to avoid damaging the appliance
▪Under no circumstances place hot pots
or pans on the display!
▪In case of overheating, switch the hob
off and allow it to cool down com-
pletely. Do not put any dishes on it. Un-
der no circumstances use cold water to
cool it down quickly.
▪Do not climb on to the appliance.
▪Do not cut or prepare food on the sur-
face and avoid impact with hard ob-
jects. Do not drag cookware across the
surface.
▪Do not allow food to get onto the sur-
faces when they are hot, as it can dam-
age them. If food were to get onto the
surfaces when they are hot, it must be
cleaned off straightaway.
▪Only use cookware that is suitable for
cooking with gas.
▪Moving pans and cookware around
causes scratches. This can be largely
prevented by lifting pans and cookware
up and then placing them down in posi-
tion.
▪The hob is designed to be used – signs
of use, such as scratches or the wear
and tear from pans and cookware, are
normal. The more intensively it is used,
the greater the signs of use; however,
the appliance remains in perfect work-
ing order and therefore does not give a
right of complaint. Safety is guaranteed
at all times.
1.5 Warnings
Please observe the notes on use in
the «Cookware» (see page 13)
section.
▪It is normal for a new appliance to give
off an unpleasant smell when it is first
used. It does not indicate the existence
of a danger or a defect. The smell will
fade over time.
▪The colour of the flame can sometimes
be orange. This is normal. It occurs
when there is dust in the air, when
some liquid spills over, etc.
▪A noise can be heard a few seconds
after the burner is turned on and off.
This is normal. It indicates that the
safety system has opened or shut down
the flow of gas.

1 Safety precautions
8
▪Ensure that the appliance is kept clean.
If the ignition sparkers or thermo-
couples are dirty, the burners will not
light or work properly. Clean the ignition
sparkers and thermocouples periodic-
ally using a small non-wire brush. En-
sure that the ignition sparkers and ther-
mocouples receive no hard knocks.

2 Using for the first time
The appliance must be installed and connected to the electricity and gas supply in
accordance with the separate installation instructions. Have a registered gas fitter
carry out the necessary work.
During the first few hours of use, a cooking zone can give off an unpleasant smell.
This is normal for brand new appliances. Ensure that the room is well ventilated.
Where is the identification plate?
The identification plate is located on the underside of
the hob.
Identification plate 1 with serial number (SN)
1
A second identification plate is supplied and should be affixed in the fitted unit under-
neath the hob.
Note down the serial number (SN) of your appliance on the back page of these operat-
ing instructions.
The serial number is required for identifying the appliance. Only then can Cus-
tomer Services guarantee a faultless service.
9

3 Appliance description
3 Appliance description
3.1 Appliance overview
GAS411GSBZ
▪1 wok burner
GAS421GSBZ
▪1 rapid burner (top)
▪1 standard burner (bottom)
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3 Appliance description
3.2 Operating and display elements
Control buttons
1
3
2
5 7
4 6
1Timer – Function as minus button in operating time / timer mode
2Operating time – Function as plus button in operating time / timer mode
3Multi-function button – duty-cycle function selection
4Slider (for setting the power level)
5Pause cooking ON/OFF and restore function
6Appliance ON/OFF
7Wipe protection ON/OFF
Displays
2 3 5 6 7 98
11 12
10
41
1Melting function activated
2Keep warm function activated
3Simmer function activated
4Duty-cycle function activated
5Cooking zone power level
6Operating time activated
7Cooking zone indicator light for the operating time
8Display for operating time / timer
9Timer activated
10 Corresponding cooking zone for slider
11 Pause activated / possibility for restoring saved settings
12 Wipe protection activated
11

3 Appliance description
3.3 Gas burners
The pan supports and all the parts of the burners must be positioned correctly in order
that the appliance can be operated correctly. Do not swap the burner caps around.
Standard / Rapid burner
1
2
6
3
5
4
1Burner cap
2Pan support
3Flame spreader
4Rapid burner
5Retaining plate for burner
6Standard burner
Wok burner
1
4
6
2
3
5
1Burner cap
2Wok extension ring
3Flame spreader
4Wok support
5Retaining plate for burner
6Wok burner
3.4 Automatic re-ignition
All hobs have automatic re-ignition.
If a flame is extinguished, the appliance automatically attempts to reignite it. If the
attempt to reignite it fails, the burner switches off.
Risk of deflagration: Ventilate the room well!
If the flame does not ignite after 15 seconds, switch off the burner and open a
door or window. Wait for at least a minute before trying again.
3.5 Safety system
The appliance has a safety system which continuously monitors the flame of each
burner. It prevents the flow of gas if a burner accidentally goes out.
If the flame does not touch the thermocouple, the appliance automatically attempts to ig-
nite a flame again. If the attempt to ignite it fails, a valve stops the flow of gas to the rel-
evant burner.
12

3 Appliance description
Ignition sparker Thermocouple Ignition sparker Thermocouple
Wok burner Standard / Rapid burner
3.6 Cookware
Suitable cookware
Burner Max. pan
weight
Top rim diameter
Min. Max. Recommended
Wok burner with wok
extension ring
10kg 26cm 40cm 35cm
Burner Max. pan
weight
Base diameter
Min. Max. Recommended
Rapid burner 17kg 18cm 26cm 24cm
Standard burner 8kg 14cm 20cm 18cm
Wok burner without wok
extension ring
17kg 14cm 30cm 26cm
Wok extension ring
▪The wok extension ring is only suitable for use
with round bottom cookware with a diameter of
over 26cm.
13

3 Appliance description
Mocha support
The mocha support is included in the scope of delivery with certain appliances. It is also
available as an accessory.
▪The mocha support is only suitable for use
with mocha coffee makers and pots with a
base diameter of at least 8 cm.
▪The mocha support fits on all cooking zones.
The best heat transfer is achieved on the wok
burner (inner ring).
Take care that the burner flame only reaches as far as the base of the mocha pot.
The mocha pot handle could otherwise get hot.
We recommend the mocha support be used on the wok or standard burners.
Note on use
The following tips will help you to save energy and prevent damaging the cookware and
the appliance:
▪The diameter of the base of the cookware
should correspond to the size of the relevant
burner.
▪Do not place small-diameter cookware on the
large burners. The flame should not touch the
sides of the cookware.
▪Cookware bases should not be deformed and
stand stably on the cooking zone. There is
otherwise a risk of tipping if the base is de-
formed.
▪Only use cookware with a thick, flat base.
▪Always use a lid and make sure that it fits
properly, otherwise a lot of energy will be
wasted.
▪Always centre the cookware over the burner,
otherwise it could tip over.
▪Do not place large pans on the burners near
the operating elements, as these could over-
heat and become damaged.
14

4 Operating the appliance
Ensure that the cookware does not protrude over the edge of the hob.
▪Place pans on the pan supports, never directly
on the burners.
▪Make sure that the pan supports, the gas
burners and the burner caps are positioned
correctly before use.
▪Cookware standing on a cooking zone should
be handled carefully.
▪Do not strike the cooking zone or put heavy
objects on it.
▪Place the wok horizontally on the wok support.
4 Operating the appliance
4.1 Switching the appliance on and off
All the appliances are operated in the same way.
▸ To switch the appliance on: Depress the button for 1second.
– flashes in all the power level displays.
–If no other entry is made, the appliance switches off again after about 10seconds
for safety reasons.
▸ To switch the appliance off: Press the button.
4.2 Selecting a cooking zone
▸ Touch the slider for the required cooking zone or swipe it to set the power
level.
–To ignite the flame, sparks are produced between the ignition sparkers and the
burner caps on all burners and during the ignition process.
4.3 Switching a cooking zone off
▸ Touch power level on the slider.
–If no other entry is made and the other cooking zones are switched off, the appli-
ance switches off after 10seconds.
4.4 Residual heat indicator
After the appliance is switched off, remains illuminated in the display for the corres-
ponding cooking zone as long as there is a risk of being burned.
15

4 Operating the appliance
4.5 Overview of power levels
Power level Cooking method Use
Melting Butter, chocolate, gelatine, sauces,
approx. 40–60°C
Keep warm Keeps food warm, approx. 50–65°C
Simmering Water temperature stays below boiling
point, approx. 70–94°C
1Melting, gentle warming Butter, chocolate, gelatine, sauces
2
3Swelling Rice
4Resume cooking, reducing,
stewing, steaming
Vegetables, potatoes, sauces, fruit, fish
5
6Resume cooking, braising Pasta, soup, braised meat
7Gentle frying Rösti, omelettes, breaded fried foods,
sausages
8Frying, deep frying Meat, chips
9Flash frying Steak
Select suitable cookware and burner for the amount of food being used.
4.6 Melting function
With the melting function , butter, chocolate or honey, for instance, can be gently
melted at approx. 40–60°C.
It is recommended that the smallest burner be used for the melting function.
Switching the melting function on
▸ Touch the button.
–The symbol illuminates.
Switching the melting function off
▸ Use the slider to set any power level or switch off via «0».
4.7 Keep warm function
The keep warm function keeps cooked food warm at approx. 65°C.
Switching the keep warm function on
▸ Touch the button 2×.
–The symbol illuminates.
Switching the keep warm function off
▸ Use the slider to set any power level or switch off via «0».
16

4 Operating the appliance
4.8 Simmer function
With the simmer function , sausages, dumplings and stuffed pasta, for instance, can
be cooked in hot water, just below boiling point.
Switching the simmer function on
▸ Touch the button 3×.
–The symbol illuminates.
Switching the simmer function off
▸ Use the slider to set any power level or switch off via «0».
4.9 Automatic boost
Do not leave the hob unattended when using the automatic boost. Risk of boiling
over, burning on and igniting!
All the cooking zones are equipped with a selectable automatic boost. When the function
is turned on cookware heats up quickly. A cooking zone heats at power level for a cer-
tain duration (see table).
The automatic boost function must be selected anew each time a cooking zone is
switched on.
The automatic boost is activated when the appliance is delivered from the factory.
The automatic boost can be deactivated under user setting P3. See the «User set-
tings» section.
Burner Standard burner Rapid burner Wok burner
Automatic boost in
mins.:secs.
2:40 2:15 1:50
Switching the automatic boost on
▸ Hold the desired power level on the slider depressed for 3seconds.
– and the power level illuminate alternately in the display when the automatic boost
is activated.
–When the automatic boost is over, the heat output is reduced again to the power
level selected.
Switching the automatic boost off before time
▸ Use the slider to set a lower power level or to switch off the cooking zone.
–The automatic boost continues to run if a higher power level is selected.
4.10 Operating time
Do not leave the hob unattended during use. Risk of boiling over, burning on and
igniting!
With the operating time function, a Cooking zone switches off automatically after a set
time 1 min.–1 hr. 59 mins..
17

4 Operating the appliance
Setting the operating time
▸ Select the required cooking zone.
▸ Touch the button.
– flashes in the display.
▸ Touch the slider for the required cooking zone.
–The symbol for the cooking zone selected illuminates.
–The indicator light for the cooking zone selected illuminates.
▸ Use the button to increase the operating time or use the button to reduce the
operating time.
–The first time the button is touched, illuminates in the display.
–The first time the button is touched, illuminates in the display.
The default value can be adjusted in the user settings.
Changing the operating time
▸ Touch the button.
– flashes in the display.
▸ Touch the slider for the required cooking zone.
–The remaining operating time for the cooking zone selected is displayed.
–The indicator light for the cooking zone illuminates.
▸ Use the or button to change the operating time.
To quickly change the operating time, press and hold the or button.
If the setting is not changed, it will be automatically accepted after 5 seconds. Alternat-
ively, the setting can also be confirmed manually by touching the slider for the corres-
ponding cooking zone.
Switching the operating time function off before time
▸ Touch the button.
▸ Touch the slider for the required cooking zone.
▸ Touch the and buttons at the same time.
– flashes in the display.
–The cooking zone continues to run.
End of the operating time
When the operating time is up
–the relevant cooking zone switches off
–an acoustic signal is emitted
– and flash above the slider.
Touch the or button to switch off the acoustic signal and the display.
–If no buttons are pressed, the acoustic signal switches off automatically after 1
minute.
Several operating times
If operating times are set for several cooking zones,
–the shortest operating time is displayed.
–the corresponding cooking zone indicator light illuminates.
–the symbol illuminates with the set operating time for each cooking zone.
18

4 Operating the appliance
To display another operating time:
▸ Touch the button.
▸ Touch the slider for the required cooking zone.
–The operating time is displayed and can be changed.
4.11 Timer
The timer functions like an egg timer (1 min.–9 hrs. 59 mins.).
It can be used at any time and independently of all other functions.
Setting the timer
▸ Switch the appliance on.
▸ Touch the button.
–The symbol illuminates.
– flashes in the display.
▸ Use the button to increase the duration of the timer or use the button to re-
duce the duration of the timer.
–The first time the button is touched, illuminates in the display.
▸ The first time the button is touched, illuminates in the display.
The standard value can be adjusted in the user settings.
To quickly change the duration of the timer, press and hold the or button.
Changing the timer
If no Frying zone is in use, first switch the appliance on.
▸ Touch the button.
–The time left on the timer flashes.
▸ Use the or button to change the duration of the timer.
Switching the timer off before time
If no Frying zone is in use, first switch the appliance on.
▸ Touch the button.
▸ Touch the and buttons at the same time.
– flashes in the display.
4.12 Childproof lock
The childproof lock is to prevent the appliance from being accidentally switched on.
Switching the childproof lock on
▸ Switch the appliance on.
Ensure all cooking zones are switched off.
▸ Touch the and buttons at the same time.
–An acoustic signal is emitted.
▸ Touch the button again.
–An acoustic signal is emitted.
–The childproof lock is now switched on.
– illuminates in all the power level displays for 10seconds.
19

4 Operating the appliance
Operating the appliance with the childproof lock activated
▸ Switch the appliance on.
▸ Touch the and buttons at the same time.
–An acoustic signal is emitted.
–The childproof lock is overridden. The appliance can now be used as normal.
The childproof lock is reactivated within one minute of switching off the appliance.
Switching the childproof lock off
▸ Switch the appliance on.
Ensure all cooking zones are switched off.
▸ Touch the and buttons at the same time.
–An acoustic signal is emitted.
▸ Touch the button again.
–A double acoustic signal is emitted.
–The childproof lock is now switched off.
– flashes in all the power level displays for 10seconds.
4.13 Pause cooking
With this function, all the cooking zones that are switched on can be temporarily oper-
ated for up to 10minutes using the «Keep warm» duty-cycle function.
After pause cooking, operation is resumed using the previous settings.
▸ Touch the button.
–The keep warm function is activated for each cooking zone.
–The operating time is interrupted.
–The timer continues to run.
–All buttons except , and are inactive.
If the pause cooking function is not turned off within 10minutes, the appliance
switches off completely.
▸ Touch the button again to resume cooking.
–The cooking zones resume operation using the previous settings.
4.14 Restore function
If the appliance has been inadvertently switched off with the button, the settings can
be restored within 6seconds.
▸ Switch the appliance on.
–The indicator light for the button flashes.
▸ Touch the button.
–Cooking zones that were switched on when the appliance was accidentally
switched off come back on automatically.
4.15 Wipe protection
This function prevents the power level from being changed accidentally, for instance
when wiping the control panel with a cloth.
▸ Touch the button.
–The indicator light for the button illuminates.
▸ Wipe protection is switched off by touching the button again or automatically after
30seconds.
20