Installation instructions
Gas hobs
KM 370 G / KM 370-1 G
KM 371 G
KM 390 G / KM 391 G
en - GB
To avoid the risk of accidents or
damage to the appliance, it is
essential to read these
instructions before it is installed
and used for the first time.
M.-Nr. 05 827 720
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Gas-heated appliances
Safety precautions to take if you smell gas
ß Turn off the gas emergency control valve immediately.
This is usually located near the gas meter.
ß Eliminate all sources of ignition in a safe manner.
Do not smoke, light cigarette lighters or matches.
ß Do not operate electrical lights or switches, i.e. do not switch them "On" or "Off".
ß Open all doors and windows to ventilate the area.
ß If the smell of gas persists, evacuate the building.
In the U.K you must now:
ß Call TRANSCO (Tel: 0 800 111 999)
ß Arrange for an appointment of a Corgi registered gas installer to visit the site
(Tel: Talking pages 0 800 600 900)
In other countries please follow relevant country specific procedures on gas.
3
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Contents
Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Appliance dimensions and worktop cut-out . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
KM 370. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
KM 370-1 G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
KM 371. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
KM 390. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
KM 391. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Building in the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Securing the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Natural gas / liquid gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Burner ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Conversion to another type of gas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
KM 370 G / KM 370-1 G /
KM 371 G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Changing the main jets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Changing the small jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
After changing the jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
KM 390 G / KM 391 G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Changing the main jets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Changing the small jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
After changing the jets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4
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Safety instructions
Building in
Fit wall units and extractor hood
before fitting the hob, to avoid
damaging the appliance.
The veneer or laminate coating of
~
worktops (or adjacent kitchen units)
must be treated with 100 °C
heat-resistant adhesive which will not
dissolve or distort.
Any backmoulds must be of
heat-resistant material.
recommended
Ideally the gas hob should be
~
installed with plenty of space on either
side. There may be a wall at the rear
and a tall unit or wall at one side. On
the other side, however, no unit or
divider should stand higher than the
hob (see illustrations).
This equipment is not designed for
~
maritime use or for use in mobile
installations such as caravans, aircraft
etc. However it may be suitable for
such usage, subject to a risk
assessment of the installation being
carried out by a suitably qualified
engineer.
not recommended
Due to the heat radiated by the hob
and to allow cooking fumes to
dissipate, it is essential that a
minimum safety distance a of
150 mm is maintained between the
worktop cut-out and adjacent
furniture, e.g. a tall unit.
not allowed
5
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Safety instructions
The room in which the gas hob is
Safety distance above the appliance
~
installed must be at least 20 m3 in size
with a door or window in it which can
be opened to the outside air.
Using the gas hob will cause a
~
build-up of heat and moisture in the
room in which it is installed. Ensure that
the room has sufficient natural or
mechanical means of ventilation, e.g.
an extractor.
If the hob is used for very long
~
periods of time additional ventilation of
the room may be necessary, e.g. by
opening windows or doors, or running
the extractor on the highest setting.
bA minimum safety distance must be
maintained between the appliance
and a cooker hood above it. See the
cooker hood manufacturer's
The hob may be installed above a
~
Miele oven, if the work-top is at least
operating and installation instructions
for details.
40 mm thick.
If the manufacturer's instructions are
not available for the cooker hood, a
minimum safety distance of at least
760 mm must be maintained. For any
flammable objects, e.g. utensil rails,
wall units etc. a minimum distance of
at least 760 mm must be maintained
between them and the hob below.
An electric fryer must not be
~
installed next to a gas hob, as the gas
flames could ignite the fat in the fryer. It
is essential to maintain a distance of at
least 300 mm between these two
appliances.
This gas hob must not be installed
~
over a dishwasher, washing machine,
tumble dryer, refrigerator or freezer.
The high temperatures radiated by the
hob could damage the appliance
below.
All dimensions in this instruction booklet
are given in mm.
Keep these instructions in a safe place
and pass them on to any future
user/owner of the appliance.
6
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Appliance dimensions and worktop cut-out
KM 370
aBuilding-in depth
bMains connection box
cGas connection R 1/2 - ISO 7-1 (DIN2999)
7
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Appliance dimensions and worktop cut-out
KM 370-1 G
aBuilding-in depth
bMains connection box
cGas connection R 1/2 - ISO 7-1 (DIN2999)
8
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Appliance dimensions and worktop cut-out
KM 371
aBuilding-in depth
bMains connection box
cGas connection R 1/2 - ISO 7-1 (DIN2999)
9
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Appliance dimensions and worktop cut-out
KM 390
aBuilding-in depth
bMains connection box
cGas connection R 1/2 - ISO 7-1 (DIN2999)
10
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Appliance dimensions and worktop cut-out
KM 391
aBuilding-in depth
bMains connection box
cGas connection R 1/2 - ISO 7-1 (DIN2999)
11
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Appliance dimensions and worktop cut-out
^ Prepare the worktop cut-out as
shown in the diagram.
Remember to maintain a minimum
safety distance of 50 mm between
the hob and the back wall and
150 mm between it and a side wall or
tall unit to the right or left of the hob.
(See "Warning and Safety
instructions").
^ Seal the cut surfaces with a suitable
heat-resistant sealant to avoid
swelling caused by moisture.
If during installation, the corners of
the frame are not flush with the
worktop surface, the corner radius,
Max R4 can be carefully scribed to
suit.
12
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Installation
Building in the appliance
^ Feed the electricity connection cable
through the cut-out and connect.
^ Place the gas hob in the prepared
cut-out.
^ Make the gas connection (see
relevant section).
Securing the appliance
KM 371 G / KM 391 G
^ Secure the gas hob at the front and
rear with fixing brackets a supplied
as shown.
KM 370 G / KM 370-1 G / KM 390 G
^ Secure the gas hob at the front with
fixing brackets a and rear with fixing
brackets b supplied as shown.
Tighten the screws until seal c sits
flush with the worktop.
13
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Installation
Do not let sealant get in between the
hob frame and the worktop.
This could cause difficulties if the
hob ever needs to be taken out for
servicing and possibly result in
damage to the hob frame or the
worktop.
The sealing strip under the edge of the
top part of the hob provides a sufficient
seal for the worktop.
14
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Electrical connection
Connection should be made via a
suitable isolator or a double pole fused
spur connection unit which complies
with national and local safety
All electrical work should be carried
out by a suitably qualified and
competent person, in strict
accordance with current local and
national safety regulations (BS 7671
in the UK).
regulations and the on/off switch should
be easily accessible after the appliance
has been built in.
If the switch is not accessible after
installation (depending on country) an
additional means of disconnection must
be provided for all poles.
Installation, repairs and other work
by unqualified persons could be
dangerous. The manufacturer
cannot be held liable for
For extra safety it is advisable to install
a residual current device (RCD) with a
trip current of 30 mA.
unauthorised work.
Ensure power is not supplied to the
appliance until after installation or
repair work has been carried out.
When switched off there must be an
all-pole contact gap of 3 mm in the
isolator switch (including switch, fuses
and relays).
The appliance must only be
operated when built-in. This is to
ensure that all electrical parts are
shielded. Live parts must not be
exposed.
Important U.K.
This appliance is supplied for
connection to a single phase 230-240 V
50 Hz supply with a 3-core cable.
Do not connect the appliance to the
mains electricity supply by an
extension lead. These do not
guarantee the required safety of the
appliance.
The wires in the mains lead are
coloured in accordance with the
following code:
Green/yellow = earth
Blue
= neutral
= live
Please make sure that the connection
data quoted on the data plate match
the household mains supply.
Brown
WARNING
THIS APPLIANCE MUST BE
EARTHED
15
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Electrical connection
Important
The electrical safety of this appliance
can only be guaranteed when
continuity is complete between it and
an effective earthing system, which
complies with current local and national
safety regulations. It is most important
that this basic safety requirement is
present and regularly tested and where
there is any doubt, the electrical wiring
in the home should be tested by a
qualified electrician. The manufacturer
cannot be held liable for the
consequences of an inadequate
earthing system such as an electric
shock.
The manufacturer cannot be held
liable for damage which is the direct
or indirect result of incorrect
installation or connection.
16
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Gas Connection
Connection
Connection to the gas supply, or
conversion from one type of gas to
another should only be undertaken
by an approved and registered gas
installer in strict accordance with
local and national safety and
Conversion to another type of gas is
described under the relevant Section.
The gas connection must be installed
so that connection can be made either
from inside or outside the kitchen unit,
and the isolating valve must be easily
accessible and visible (by opening one
of the kitchen unit doors, if necessary).
building regulations, (e.g. Corgi
registered in the U.K.) Every
appliance should have its own
isolating valve and test point.
A test for possible leakages must be
carried out after installation.
Check with your local gas supplier
about the type of gas and its
calorific value, and compare this
information with the type of gas
quoted on the hob data plate.
Safety regulations demand that a
pressure test point is installed near a
gas hob to allow an engineer to test the
pressure, following servicing.
The installer is responsible for
ensuring that the appliance
functions correctly when installed.
Depending on country, the hob is
supplied ready for connection to natural
gas or liquid gas (refer to label on the
appliance).
United Kingdom:
GB II 2 H 3+ 20 mbar, 28-30/37 mbar
Ireland:
IE II 2 H 3+ 20 mbar, 28-30/37 mbar
Depending on country a set of jets for
conversion to natural or liquid gas may
be included with the hob.
Please contact your dealer or agent for
the appropriate conversion jets if
necessary.
17
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Gas Connection
Natural gas / liquid gas
^ The appliance is supplied with an
R 1/2" - ISO 7-1 (DIN 2999) gas
connection point.
^ An appropriate rigid connection and
isolating valve must be installed for
final connection.
^ The gas connection must be so sited
that it is not adversely heated when
the appliance is in operation.
After installing the appliance the gas
burners have to be set for local
conditions.
aConnection with test point
specifically for GB
When the gas hob has been
installed it is essential to check that
neither the gas pipe nor the
bConnection with test point
specifically for GB and 90° angle
electricity cable is in contact with hot
parts of the appliance or hot gas
exhaust, otherwise heat damage to
the pipe and cable could occur.
18
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Burner ratings
Nominal rating for all gas types with the burner full on
Burner
Gas type
KM 370 G / KM 370-1 G / KM 390 G / KM 391 G
KM 371 G
kW
g/h
kW
g/h
Small
Natural gas H
Liquid gas
1.00
1.00
-
1.00
1.00
-
burner
73
73
Normal
burner
Natural gas H
Liquid gas
1.75
1.75
-
1.75
1.75
-
127
127
Large
Natural gas H
Liquid gas
3.00
3.00
-
3.00
3.00
-
burner
218
218
Wok
Natural gas H
Liquid gas
4.00
4.00
-
4.50
4.50
-
291
327
Total:
Natural gas H
Liquid gas
11.50
11.50
12.00
12.00
837
873
Nominal rating at low setting
Burner
Gas type
KM 370 G / KM 370-1 G / KM 390 G / KM 391 G
KM 371 G
kW
kW
Small
Natural gas H
Liquid gas
0.27
0.27
0.27
0.27
burner
Normal
burner
Natural gas H
Liquid gas
0.38
0.38
0.38
0.38
Large
Natural gas H
Liquid gas
0.55
0.55
0.55
0.55
burner
Wok
Natural gas H
Liquid gas
1.10
1.10
0.28
0.25
19
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Conversion to another type of gas
KM 370 G / KM 370-1 G /
KM 371 G
The jet markings refer to 1/100 mm of
the jet diameter.
Contact your local gas supplier if the
natural gas connection pressure is less
than 18 mbar or higher than 25 mbar.
When converting to anothe type of
gas, the main jets and the small jets
on all burners have to be changed.
Screw in the new jets according to
the following table.
For U.K. and IE
Main
jet Ø
Small
jet Ø
Natural gas H
Small burner
Medium burner
Large burner
Wok
0.76
1.00
1.29
0.39
0.42
0.54
0.80
1.29 /
0.63
Liquid gas
Small burner
Medium burner
Large burner
Wok
050
0.65
0.85
0.23
0.32
0.40
0.54
0.97 /
0.37
20
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Conversion to another type of gas
Changing the jets
Changing the main jets
Disconnect the gas hob from the
electricity supply by switching off at
the socket and withdrawing the plug
or by removing the mains fuse.
Small, medium and large burners
^ Take off the pan support, burner cap
b and the burner head d.
^ Using an M7 socket spanner
unscrew the main jet e.
^ Change the main jet.
21
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Conversion to another type of gas
Wok burner
^ Take off the burner cap a, burner
ring b and burner head c.
^ Loosen screws d and remove the
cover plate.
^ Using an M7 socket spanner
unscrew the main jets e (larger
diameter jet) and f (smaller
diameter jet).
^ Change the main jets.
22
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Conversion to another type of gas
Changing the small jets
(for all burners)
To change the small jets, the burner
securing screws must first be loosened
and the upper section of the appliance
removed.
a
^ Remove the operating controls by
pulling them upwards.
^ Remove the upper section.
b
N.B. To remove a ceramic upper
section:
Insert the lever supplied between the
frame and the worktop, prise up the
upper section and remove.
^ Remove the ignitor a.
^ Using a small screwdriver, unscrew
the small jet b in the gas fitting.
^ Pull the jet out with a pair of pointed
pliers.
^ Select the jets as shown in the table,
fit, reversing the procedure, and
secure.
23
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Conversion to another type of gas
After changing the jets
^ Screw in the burner bases and
re-assemble the burner parts, making
sure they are in the correct order.
^ Assemble the removed burner parts
in reverse order and check for leaks
by operating the burner without the
upper section of the hob in place
(use a match to ignite the flame).
^ Replace the controls.
^ Finally ignite all the burners to check
that they are operating correctly.
^ Remove the burner parts again.
The flame must not go out in the lowest
^ Then replace the upper section of the setting, or when the control is turned
hob.
quickly from a high to a low setting.
In the highest setting the flame must
have a distinctive and visible core.
Stick the label supplied with the jets
above the label stating the type of
gas being used.
24
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Conversion to another type of gas
KM 390 G / KM 391 G
The jet markings refer to 1/100 mm of
the jet diameter.
When converting to another type of
gas, the main jets and the small jets
on all burner have to be changed.
Contact your local gas supplier if the
natural gas connection pressure is less
than 18 mbar or higher than 25 mbar.
Screw in the new jets according to
the following table.
For U.K. and IE
Main
jet Ø
Small
jet Ø
Natural gas H
Small burner
Medium burner
Large burner
Wok
0.76
1.00
1.29
0.39
0.42
0.54
1.40 /
0.68
0.88 /
0.42
Liquid gas
Small burner
Medium burner
Large burner
Wok
0.50
0.65
0.85
0.23
0.32
0.40
0.97 /
0.37
0.52 /
0.23
25
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Conversion to another type of gas
Changing the jets
Changing the main jets
Disconnect the gas hob from the
electricity supply by switching off at
the socket and withdrawing the plug
or by removing the mains fuse.
Small, medium and large burners
^ Take off the pan support, burner cap
b and the burner head d.
^ Using an M7 socket spanner
unscrew the main jet e.
^ Change the main jet.
26
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Conversion to another type of gas
Wok burner
^ Take off the burner cap a, burner
ring b and the burner head c.
^ Loosen screws d and remove the
cover plate.
^ Using an M7 socket spanner
unscrew the main jets e (larger
diameter) and f (smaller diameter).
^ Change the main jets.
27
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Conversion to another type of gas
Changing the small jets
Small, normal and large burners
To change the small jets, the burner
securing screws must first be loosened
and the upper section of the appliance
removed.
^ Remove the operating controls by
a
pulling them upwards.
^ Remove the upper section.
N.B. To remove a ceramic upper
section:
Insert the lever supplied between the
frame and the worktop, prise up the
upper section and remove.
b
^ Remove the ignitor a.
^ Using a small screwdriver, unscrew
the small jet b in the gas fitting.
^ Pull the jet out with a pair of pointed
pliers.
^ Select the jets as shown in the table,
fit, reversing the procedure and
secure.
28
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Conversion to another type of gas
Wok burner
^ Remove the ignitor a.
^ Using a small screwdriver, unscrew
the small jets b and c in the gas
fitting.
a
^ Pull the jets out with a pair of pointed
pliers.
^ Select the jets as shown in the table,
fit, reversing the procedure, and
secure.
c
b
bSmall jet with smaller diameter
(e.g. for liquid gas: 0.20).
cSmall jet with larger diameter
(e.g. for liquid gas: 0.46).
29
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Conversion to another type of gas
After changing the jets
^ Screw in the burner bases and
re-assemble the burner parts, making
sure they are in the correct order.
^ Assemble the removed burner parts
in reverse order and check for leaks
by operating the burner without the
upper section of the hob in place
(use a match to ignite the flame).
^ Replace the controls.
^ Finally ignite all the burners to check
that they are operating correctly.
^ Remove the burner parts again.
The flame must not go out in the lowest
^ Then replace the upper section of the setting, or when the control is turned
hob.
quickly from a high to a low setting.
In the highest setting the flame must
have a distinctive and visible core.
Stick the label supplied with the jets
above the label stating the type of
gas being used.
30
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Alteration rights reserved / 3209
M.-Nr. 05 827 720 / 10
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