Whirlpool BB 20TC 118/CS Gebrauchsanweisung Seite 14

The following instructions are provided for qualified installers
so that they may accomplish installation, adjustment and
technical maintenance operations correctly and in compliance
with current regulations and standards.
Important: the hob should be disconnected from the
mains electricity supply before any adjustment,
maintenance, etc. is carried out. Maximum caution should
be used whenever it is necessary to keep the appliance
connected to the electricity supply.
The hobs have the following technical characteristics:
-Category II 2H3+
- Class 1: all models whose edges are higher than/equal to
85 mm (see following page, fig. 4, detail H3).
- Class 3: all models whose edges are lower than/equal to 85
mm (see following page, fig. 4, detail H1 and H2).
Positioning
This appliance may only be installed and operated in
permanently ventilated rooms in compliance with provisions
laid down by current regulations and standards. The following
requirements must be observed:
• The appliance must discharge combustion products into a
special hood, which must be connected to a chimney, flue
pipe or directly to the outside (Fig.1).
• If it is impossible to fit a hood, the use of an electric fan is
permitted, either installed on a window or on an external
wall, which must be switched on at the same time as the
appliance.
In a chimney stack or branched flue
(exclusively for cooking appliances)
Kitchen ventilation
The air flow into the room where the appliance is installed
must equal the quantity of air that is required for regular
combustion of the gas and for ventilating the same room.
Air must be taken in naturally through permanent apertures
made in the outside walls of the room or through single or
branching collective ventilation ducts in compliance with the
standards in force.
The air must be taken directly from the outside, from an area
far from sources of pollution.
instructions for the installer
Fig.1
Directly to the outside
The ventilation aper ture must have the following
characteristics (Fig.2A):
· total free cross section of passage of at least 6 cm² for
every kW of rated heating capacity of the appliance, with a
minimum of 100 cm² (the heating capacity is indicated on
the rating plate);
· it must be made in such a way that the aperture, both on
the inside and outside of the wall, cannot be obstructed;
· it must be protected, e.g. with grills, wire mesh, etc. in
such a way that the above-mentioned free section is not
reduced;
· it must be situated as near to floor level as possible.
Detail A
A
Examples of ventilation holes
for comburant air
Fig. 2A
The air inflow may also be obtained from an adjoining room,
provided the latter is not a bedroom or a room where there is
a risk of fire, such as garages, mews, fuel stores, etc. and is
ventilated in compliance with the standards in force.
Air from the adjoining room to the one to be ventilated may
be made to freely pass through permanent apertures with a
cross section at least equal to that indicated above. These
apertures may also be obtained by increasing the gap between
the door and the floor (Fig.2B). If an electric fan is used for
extracting the combustion products, the ventilation aperture
must be increased in relation to its maximum performance.
The electric fan should have a sufficient capacity to guarantee
an hourly exchange of air equal to 3-5 times the volume of
the kitchen. Prolonged, intensive use of the appliance may
require extra ventilation, e.g. an open window or a more
efficient ventilation system by increasing the extraction power
of the electric fan if installed. Liquid petroleum gas descends
towards the floor as it is heavier than air. Apertures in the
outside walls in rooms containing LPG cylinders should
therefore be at floor level, in order to allow any gas from
leaks to be expelled. Do not store LPG cylinders (even when
empty) in basements/rooms below ground level; it is advisable
to keep only the cylinder in use in the room at any one time
and connected far from heat sources which could raise its
temperature to above 50 °C.
13
Adjacent Room to be
room ventilated
Enlarging the ventilation slot
between window and floor
Fig. 2B