Bosch Appliances Cooktop NCT 675 N User Manual

BOSCH  
IT  
Istruzioni per l’uso  
FR Mode d’emploi  
GB Directions for use  
DE Gebrauchsanleitung  
NL Gebruiksaanwijzing  
ES  
PT  
Instrucciones de manejo  
Instruções de Serviço  
NCT 685 C  
NET 682 C  
NCT 685 B  
NCT 685 N  
NET 682 N  
NCT 675 N  
BOSCH  
 
Contents  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
INSTRUCTIONS FOR SAFE AND PROPER USE _______________19  
POSITIONING OF HOB ____________________________________21  
ELECTRICAL CONNECTION _______________________________22  
GAS CONNECTION_______________________________________23  
ADAPTATION TO DIFFERENT TYPES OF GAS ________________25  
FINAL OPERATIONS______________________________________28  
USING THE HOB _________________________________________30  
CLEANING AND MAINTENANCE ____________________________32  
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.  
18  
 
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.  
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.  
19  
 
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.  
REPLACED APPLIANCES MUST BE TAKEN TO A SPECIAL GARBAGE  
COLLECTION CENTRE.  
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.  
20  
 
Instructions for the installer  
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).  
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 device is classified "type Y" as  
regards risks against fire and it can  
be set adjacent to walls that are  
higher than the work surface,  
provided that a distance of 145 mm.  
is respected (as shown in the figure)  
to  
prevent  
damage  
due  
to  
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.  
Carefully position the insulation gasket (supplied) on the external  
perimeter of the hole made in the top surface (see figures below) and try  
to make it stick to the entire surface by applying light pressure with your  
hands. Refer to the coordinates shown in the figure, bearing in mind that  
sides A should be adjacent to the hole. Secure the hob to the counter  
with brackets B (supplied). Carefully trim any excess from border C of the  
gasket. The distances in the following drawing refer to the hole on the  
inner side of the gasket.  
21  
 
Instructions for the installer  
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 0.75 mm2 (3 x 0.75 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.  
22  
 
Instructions for the installer  
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 A on 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 D with 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.  
23  
 
Instructions for the installer  
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.  
24  
 
Instructions for the installer  
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 A that 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”.  
25  
 
Instructions for the installer  
5.2 Regulation for LPG  
Loosen screw A and push support B all the way. Use a double head  
wrench to remove nozzle C and 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 B so that nozzle C is covered perfectly.  
Move the Venturi tube D to 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.  
Rated  
Burner  
heating  
capacity  
(kW)  
LPG – G30/G31 28/37 mbar  
Nozzle  
diameter  
1/100 mm  
By-pass  
mm  
1/100  
Reduced  
flowrate  
(W)  
Flowrate Flowrate  
g/h G30  
g/h G31  
Auxiliary (1)  
1.05  
1.65  
2.55  
3.1  
48  
62  
76  
85  
95  
87  
42  
87  
30  
33 (*)  
33 (*)  
40 (*)  
380  
380  
76  
75  
Semi-rapid (2)  
Average rapid (3)  
Large rapid (4)  
Triple crown (5)  
Triple crown (6)  
Double crown  
30  
37  
120  
185  
225  
283  
240  
58  
118  
182  
222  
279  
236  
57  
750  
45  
800  
3.9  
65  
65  
1700  
1700  
380  
3.3  
internal (7)  
external (7)  
0.8  
26  
33 (*)  
55  
3.3  
1200  
240  
236  
(*) By-pass value for valveless appliances.  
26  
 
Instructions for the installer  
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.  
Rated heating  
capacity  
Burner  
Natural gas – G20 20 mbar  
(kW)  
Nozzle diameter  
1/100 mm  
Reduced flowrate  
(W)  
Auxiliary (1)  
1.05  
1.65  
2.55  
3.1  
73  
380  
380  
Semi-rapid (2)  
Average rapid (3)  
Large rapid (4)  
Triple crown (5)  
Triple crown (6)  
Double crown  
92  
115  
126  
140  
130  
67  
750  
800  
3.9  
1400  
1400  
380  
3.3  
internal (7)  
external (7)  
0.8  
3.3  
130  
900  
5.4 Regulation of primary air  
Referred to distance “X” in mm.  
BURNER  
G20  
20 mbar  
G30/G31  
28/37 mbar  
Auxiliary (1)  
1.5  
1.5  
1
1
Semi-rapid (2)  
Average rapid (3)  
Large rapid (4)  
Triple crown (5)  
Triple crown (6)  
1.5  
1.5  
2.5  
3.5  
2.5  
1.5  
4
1.5  
2
1
Double crown  
internal (7)  
external (7)  
0.5  
1
27  
 
Instructions for the installer  
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.  
28  
 
Instructions for the installer  
6.3 Arrangement of burners on hob  
BURNERS  
1
2
3
4
Auxiliary  
Semi-rapid  
Average rapid  
Large rapid  
5-6 Triple crown  
Double crown  
7
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.  
29  
 
Instructions for the user  
7. USING THE HOB  
Make sure that the flame-baffle crowns, the caps and the grid have been  
assembled correctly. Grid A (supplied) should be used for "woks"  
(Chinese pots).  
Adapter B (supplied) is to be used for small vessels.  
7.1 Ignition of the burners with safety device  
For each knob the corresponding burner is indicated. 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.  
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 cock is open.  
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  
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.  
30  
 
Instructions for the user  
7.3 Diameter of containers  
BURNERS  
Ø min. e max.  
(in cm)  
1
2
3
4
Auxiliary  
Semi-rapid  
Average rapid  
Large rapid  
7-18  
10-24  
12-24  
14-28  
22-26  
12-34  
5-6 Triple crown  
Double crown  
7
31  
 
Instructions for the user  
8. CLEANING AND MAINTENANCE  
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.  
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.  
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.  
32  
 

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