LG HB7522A User manual

Built-In Gas Cooktops
Installation and Operating Instructions
HB7522A
To avoid the risk of accidents or damage to the Gas Cooktops,
it is essential to read these operating instructions
before it is installed or used for the first time.
And please keep this manual for later reference.
P/No.: MFL62060302
http://au.lge.com (Australia)
http://nz.lge.com (New Zealand)

Contents
2
Introduction ................................................................................. 3
1. Instructions for safe and proper use ....................................... 3
Instructions for the installer ...................................................... 5
2. Positioning of the hob ............................................................. 5
3. Electrical connection .............................................................. 9
4. Gas connection .................................................................... 10
5. Adaptation to different types of gas ...................................... 12
6. Final operations .................................................................... 15
Instructions for the user .......................................................... 17
7. Using the hob ....................................................................... 17
8. Cleaning and maintenance .................................................. 19
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
authorised person 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.
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.

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 designed for cooking food and it shall not be used
as a space heater.
Do not spray aerosols in the vicinity of this appliance while it is in
operation.
WHERE THIS APPLIANCE IS INSTALLED IN MARINE
CRAFT OR IN CARAVANS, IT SHALL NOT BE USED AS A
SPACE HEATER.
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.
DO NOT USE OR STORE FLAMMABLE MATERIALS IN THE
APPLIANCE STORAGE DRAWER OR NEAR THIS APPLIANCE.
DO NOT MODIFY THIS APPLIANCE
4

5
Instructions for the installer
2. Positioning of hob
This appliance shall be installed only by authorized persons in
accordance with AS5601 - Gas Installations, any statutory
regulations, local gas regulations, municipal building codes,
electrical wiring regulations, and the manufacturer's installation
instructions.
Clearance around the appliance must comply with the requirements
of AS5601.
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 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 Ashould
be adjacent to the hole. Secure the hob to the counter with brackets
B(supplied). Carefully trim any excess from border Cof the gasket.

Instructions for the installer
The distances in the following drawing refer to the hole on the
inner side of the gasket.
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.
Overall dimensions: location of gas and electrical connection points
(all measures in mm).
30 cm 70 cm
hob hob
A 60 120
B 90 90
C 30 30
D 90 70
6
* Dimension A, C : Clearances are
these for the hose assembly

7
2.2 Clearance above and around domestic appliances
Extract from AS5601
REQUIREMENTS
1 Overhead clearances – (Measurement A)
Range hoods and exhaust fans shall be installed in accordance with
the manufacturer’s instructions. However, in no case shall the
clearance between the highest part of the hob of the cooking
appliance and a range hood be less than 600 mm or, for an overhead
exhaust fan, 750 mm.
Any other downward facing combustible surface less than 600 mm
above the highest part of the hob shall be protected for the full width
and depth of the cooking surface area in accordance with Clause
5.12.1.2. However, in no case shall this clearance to any surface be
less than 450 mm.

Instructions for the installer
2 Side clearances – (Measurements B & C)
Where B, measured from the periphery of the nearest burner to any
vertical combustible surface, is less than 200 mm, the surface shall
be protected in accordance with Clause 5.12.1.2 to a height C of not
less than 150 mm above the hob for the full dimension (width or
depth) of the cooking surface area. Where the cooking appliance is
fitted with a ‘splashback’, protection of the rear wall is not required.
3 Additional requirements for Freestanding and Elevated Cooking
Appliaces – (Measurements D & E)
Where D, the distance from the periphery of the nearest burner to a
horizontal combustible surface is less than 200 mm, then E shall be
10 mm or more, or the horizontal surface shall be above the trivet.
See insets above.
NOTES
1 Requirement 3 does not apply to a freestanding or elevated
cooking appliance which is designed to prevent flames or the
cooking vessels from extending beyond the periphery of the
appliance.
2 The ‘cooking surface area’ is defined as that part of the
appliance where cooking normally takes place and does not
include those parts of the appliance containing control knobs.
3 For definition of hob, see Clause 1.4.64.
4 For definition of trivet, see Clause 1.4.109.
5 Consideration is to be given to window treatments when
located near cooking appliances. See Clause 5.3.4.
8

9
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.

10
Instructions for the installer
4. Gas connection
Use pipe-joint compound made for use with Natural U.L.P. gas.
The burner it controls is shown next to each knob (the
example corresponds to the front left burner).
This appliance is suitable for installation with Natural
Gas or ULPG (propane). Refer to page 12 for the
relevant burner pressure and appropriate injector sizes.
When the appliance is to be connected to Natural Gas
then the pressure regulator supplied must be fitted to the
gas inlet. A test point (for checking the gas pressure) is
supplied either with the regulator or as a separate fitting
in the case of ULPG (propane) appliances.
Connection of the appliance to the gas supply must be in
accordance with the requirements of AS5601. A 1/2” BSP connector
at the inlet is recommended and the gas supply line to the
appliance must be of adequate length to allow sufficient withdrawal
of appliance for service or disconnection and be:
1. annealed copper pipe or;
2. flexible hose according to AS/NZ1869 & be at least Class
“B”, 10 mm diameter.
The cooker must be installed with provision to allow the gas to be
turned off and disconnected for servicing and removal of the appliance
as required from the gas supply. Before the cooker is operated make
certain all relevant parts are placed in the correct position.
When the installation is completed the installation connections of
cooker will require to be leak tested, the burner operating pressure
and flame checked and adjusted.
Warranty service calls do not cover these adjustments!
To check the operating pressure of the appliance it is recommended
at least 2 large size burners are used. Ensure appliance is secured
to wall when installation is completed.
N.G. The regulator supplied must be fitted to the 1/2BSP thread at
the rear of the appliance. An approved manual shut-off valve must

be installed. The N.G. regulator must be checked and adjusted to
1.0kPa after installation.
U.L.P.G. Can be connected to the inlet fitting directly.
The pressure must be checked to ensure it is
operating at 2.75kPa. A separate test point fitting
must be installed between the piping & the appliance
for the pressure to be checked to ensure it is operating at 2.75kPa.
4.1 Connection to ULPG
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 ULPG”.
4.2 Ventilation of rooms
Caution – This hob may only be installed and operated in rooms
permanently ventilated in accordance with current regulations. For
proper operation of a gas appliance it is essential for the air necessary
for combustion of the gas to be able to flow naturally into the room. Air
must flow directly into the room through openings in its outside walls.
This (these) opening (s) must have a free passage cross-section of at
least 100 cm2, or 200 cm2for appliances not equipped with gas safety
device. These openings must be constructed so that they cannot be
obstructed indoors or outdoors, and should preferably be close to the
floor on the side opposite to the combustion gas discharge point. If it is
not possible to make the openings in the room where the cooker is
installed, the necessary air may be taken from an adjoining room,
proveded it is not a bedroom or a room with fire risk.
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.
11

Instructions for the installer
12
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 adjusted for natural gas at a pressure of
1.0kPa. 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 ULPG”.

13
5.2 Regulation for ULPG
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.
ULPG – 2.75 kPa
Burner (*) Nominal gas Injector
consumption (mm)
(MJ/h)
Auxiliary (1) 4.8 0.60
Semi rapid (2) 6.0 0.68
Rapid (3) 9.5 0.85
Wok (4) 15.0 1.05
(*) For burner reference numbers, see page 16.

14
Instructions for the installer
5.3 Regulation for natural gas
The hob has been adjusted for natural gas at a pressure of
1.0kPa. To allow the unit to work with this type of gas, perform the
same operations described in paragraph “5.2 Regulation for ULPG”,
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.
NG – 1.0 kPa
Burner (*) Nominal gas Injector
consumption (mm)
(MJ/h)
Auxiliary (1) 4.8 0.98
Semi rapid (2) 6.0 1.10
Rapid (3) 9.0 13.5
Wok (4) 15.0 1.70
5.4 Regulation of primary air
Referred to distance “X” in mm.
BURNER NG – 1.0 kPa ULPG – 2.75 kPa
Auxiliary (1) 2 2
Semi-rapid (2) 3.0 3.0
Average rapid (3) 3.5 3.5
Wok (4) 8 8.0
To identify the burners on your hob, refer to the drawings in point
“6.3 Arrangement of burners on hob”

15
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 ULPG
To regulate the minimum for ULPG, 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 ULPG”.
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.

16
Instructions for the installer
6.3 Arrangement of burners on hob
BURNERS
1. Auxiliary
2. Semi rapid
3. Rapid
4. Wok
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.

17
7. Using the hob
Make sure that the flame-baffle crowns, the caps and the grid
have been assembled correctly. Grid C (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 use of the burners and lower gas
consumption, use covered containers that are
proportional in size to the burner to prevent the
flame from licking the sides (see paragraph “7.3
Diameter of containers”). When water reaches the
boiling point, lower the flame so that it doesn’t
overflow. To avoid burns or damage to the hob, all
recipients or griddle plates must be placed within the
perimeter of the hob, at a distance of 3-4 cm from the knobs.
Instructions for the user

18
Instructions for the user
All containers have to have a flat and smooth bottom. When using
fats or oils, be extremely careful that they don’t overheat and catch
fire. If the flame accidentally goes out, turn off the control knob and
wait at least 1 minute before trying to re-light the burner.
7.3 Diameter of containers
(*) Burner Ø min. and max. (in cm)
1 Auxiliary 12-14
2 Semi rapid 16-20
3 Rapid 22-26
4 Wok 22-26
(*) For burner reference numbers, see page 16.
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.

19
8. Cleaning 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.
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.

20
Instructions for the user
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.