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 Installation instructions

Safety precautions .....................................................................3
Before installing .........................................................................3
Preparing the units.....................................................................4
Installation of appliance ............................................................4

Setting up the appliance ...................................................................5

Removal of hob...........................................................................5
Set-up, gas and electricity connection.....................................5

Gas connection ...................................................................................5
Faults in the gas installation/smell of gas .....................................5
Electrical connection ..........................................................................6

Types of connection...................................................................6

Connection for natural gas (NG) .....................................................6
Liquid gas connection (LPG)............................................................7

Conversion to a different gas type ...........................................8

Measures to note ................................................................................8
Converting to a different gas type ...................................................8

Parts for the gas conversion.............................................................8
Converting the appliance from natural gas to liquefied gas 
(LPG) .....................................................................................................9
Converting the appliance from liquid gas to natural gas............9
Replacing the burner nozzles...........................................................9
Adjusting or replacing the bypass nozzles................................. 10
Removing the hob plate ................................................................. 11
Replacing the bypass nozzles....................................................... 11
Installing the hob.............................................................................. 11

Leak test and function test......................................................12

Check the gas connection ............................................................. 12
Checking the burner nozzles......................................................... 12
Checking the bypass valves.......................................................... 12

Correct flame formation...........................................................12

Burner ................................................................................................ 12

Technical data – Gas................................................................12

Safety precautions

Read the appliance instructions before installing and using.
The graphics in these Assembly instructions are given as a 

guide only.

The manufacturer is exempt from all liability if this manual's 

requirements are not complied with.
All operations relating to installation, regulation and 

conversion to other gas types must be carried out by an 

authorised installation engineer, respecting all applicable 

regulations, standards and the specifications of the local gas 

and electricity providers.
You are recommended to contact the Technical Assistance 

Service to convert to another gas type.
Before you begin, turn off the appliance's electricity and gas 

supply.

This appliance has been designed for home use only, not for 

commercial or professional use. This appliance cannot be 

installed on yachts or in caravans. The warranty will only be 

valid if the appliance is used for the purpose for which it was 

designed.

After connecting the appliance, check that the local conditions 

(type of gas and pressure) are compatible with the appliance 

settings. The permissible appliance settings can be found on 

the label or rating plate.
These instructions are only valid if the appropriate country 

symbol appears on the appliance. If the symbol does not 

appear on the appliance,  it is necessary to refer to the 

technical instructions which will provide the necessary 

instructions  concerning modification of the appliance to the 

conditions of use of the country.
This appliance can only be installed in a well-ventilated place in 

accordance with existing regulations and ventilation 

specifications. The appliance must not be connected to a 

combustion product removal device.
The supply cable must be attached to the unit to prevent it from 

touching hot parts of the oven or hob.
Appliances with electrical supply must be earthed.
Do not tamper with the appliance's interior. If necessary, call 

our Technical Assistance Service.

Before installing

This appliance is class 3 type, according to the EN 30-1-1 

regulation for gas appliances: built-in appliance.
The units next to the appliance must be made of non-flammable 

materials. The laminated covering and glue for adhering it must 

be heat resistant.
This appliance cannot be installed above fridges, washing 

machines, dishwashers or similar.
If the hob is installed above an oven, it must have forced 

ventilation. Check the dimensions of the oven in your 

installation instructions.
If an extractor hood is fitted, this must be done according to the 

installation instructions and always allowing for a vertical 

minimum clearance of 650 mm to the hob.

Summary of Contents for G20

Page 1: ...01 290595 Ú Installation instructions Gas hob ...

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Page 3: ...r home use only not for commercial or professional use This appliance cannot be installed on yachts or in caravans The warranty will only be valid if the appliance is used for the purpose for which it was designed After connecting the appliance check that the local conditions type of gas and pressure are compatible with the appliance settings The permissible appliance settings can be found on the ...

Page 4: ...work surface Installation of appliance Note Wear protective gloves to fit the hob Remove the pan support handles burner cap and burner heads Turn the appliance over carefully and place it on a soft cloth Make sure that the ignition parts are not damaged The adhesive seal provided prevents leaks Adhere it to the work surface around the cut out It must be adhered around the edge of the area cut out ...

Page 5: ... waste gas main All ventilation regulations must be observed Caution The gas connection must be made via a fixed i e not mobile connection gas line or via a safety hose Caution If using the safety hose ensure that the hose is not trapped or crushed The hose must not come into contact with hot surfaces Caution The gas connection must have an easily accessible locking device Safety information The n...

Page 6: ...ction If the safety earth terminal does not comply with regulations safety against electrical hazards is not guaranteed Caution You must use a H 05 W F type cable or equivalent for the appliance connection Connection for models with mains cable without plug optional Caution Appliances fitted with three core cables must be earthed Connect the wires with the mains cable according to the following co...

Page 7: ... connecting device for example a hose clamp The hose must be short and completely leak tight The hose can have a maximum length of 1 5 m Observe the current guidelines The gas hose must be replaced at least once a year Fit the flexible safety gas hose and use a screw connection or a cable clamp to tighten it securely After establishing the connection carry out a leak test See the section Leak test...

Page 8: ...burner valves must either be replaced or screwed in fully Numbers are printed on the nozzles indicating their diameter Further information about the gas types suitable for the appliance as well as the corresponding gas nozzles can be found in the section entitled Technical properties gas After the conversion After the appliance has been converted to a different gas type you must perform a leak tes...

Page 9: ...blished via a gas pipe or via a flexible safety gas hose with threaded connections at both ends Replace the gas connection pipe in the appliance with a natural gas adaptor First loosen the screw connection from the flexible safety gas hose if available or loosen the cable clamp and disconnect this from the appliance Figure 1 Remove the connecting piece held using a size 13 key from the appliance s...

Page 10: ...lade screwdriver no 2 through the drain holes ensure that you do not damage the cables and tighten the bypass nozzles as far as they will go For designs that do not have direct access to bypass nozzles optional To reach the bypass nozzles you must remove the hob See section Removing the hob After the hob has been removed remove the ignition group from the taps The bypass nozzles must then be tight...

Page 11: ...st carry out a leak test See the section Leak test Installing the hob Install in reverse order 1 Ensure that the cables are not damaged and the connections do not come loose Slowly insert the ignition group 2 Slowly place the hob onto the burners Attach the burner screws from the hob Caution In doing so ensure that ignition plug and thermal element seals do not fall under the hob 3 For versions wi...

Page 12: ...be checked using your finger or a suitable device 3 Spray the nozzle in the burner to be checked with a leakage spray 4 Push the control knob and turn it anti clockwise This supplies the nozzle with gas If small bubbles or foam form indicating a gas leak follow the instructions in the section entitled In the event of a gas leak Correct flame formation Burner The burning behaviour and soot formatio...

Page 13: ... Gas flow at 15 C and 1013 mbar g h 127 G20 G25 G30 Gas pressure mbar 20 25 29 Nozzle mm 1 15 1 28 0 85 Bypass nozzle mm 0 39 0 39 0 39 Input power max kW 3 3 3 Input power min kW 0 50 0 50 1 3 Gas flow at 15 C and 1013 mbar m h 0 286 0 333 Gas flow at 15 C and 1013 mbar g h 218 G20 G25 G30 Gas pressure mbar 20 25 29 Nozzle mm 1 03 1 04 0 68 Bypass nozzle mm 0 61 0 61 0 61 Input power max kW 3 3 3...

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