Contents:
1
Introduction
2
Important Information
3
Extraction Performance
4
Installation
5
Operating Instructions
6
Maintenance
7
General Arrangement Drawings
1. INTRODUCTION
During the cooking process, there will be heat, vapours and
fumes produced. Your
FM900 built in extractor
has been
designed to complement your kitchen both in looks and
performance in order to create a good environment for creative
cooking and is ideal for applications where a conventional
cooker hood is neither suitable nor desirable, for example, in
an inglenook chimney or kitchen furniture above the hob.
2. IMPORTANT INFORMATION
The exhaust air must not be discharged into a flue which is
used for exhausting fumes from appliances supplied with
energy other than electricity e.g. oil or gas-fired central heating
boilers, gas-fired water heaters, etc.
Requirements of the relevant authorities concerning the
discharge of exhaust air must be complied with.
Pay particular attention to fire risk when frying. To minimise
the risk of fire, all instructions relating to cleaning the grease
filters and removing grease deposits must be adhered to.
Do not flambé under the extractor.
The minimum clearance between the top of the hob or
cooker and the bottom of the extractor should be within
the following range
(unless a greater distance is specified by
your cooking appliance or furniture manufacturer):
hob-to-extractor minimum clearance distances:
450mm above electric hobs and cookers
650mm above gas hobs and cookers
760mm above wok burners, griddles, barbeques.
hob-to-extractor clearance (max recommended): 900mm
The minimum distance between the hob and the bottom of the
extractor is essential for safety reasons and to prevent
overheating of the extractor and its components.
The maximum distance between the hob and the bottom of
the extractor is required to ensure that the extractor collects
the cooking fumes and odours efficiently.
Please also note that a 90
o
bend in 150mm flexible ducting will
require 215mm minimum headroom to give a smooth radius
with no kinking.
You are advised to install measures designed to reduce
the incidence of cold draughts entering the property via
any ductwork.
For extractors with internal fans this should, at the
very least, consist of an external duct termination
with integrated non-return flaps (e.g. gravity shutter
wall grille/louvre).
3. EXTRACTION PERFORMANCE
The primary influence on the overall performance of the
extractor is the design of the ducting which takes the exhaust
air from the extractor to the outside. The duct route should be
a prime consideration during the initial stages of the kitchen
design (We do not recommend recirculating air back into the
kitchen, however, recirculating versions or conversion kits are
available if absolutely necessary).
Please note the following:
Easy access to the duct route during installation is
important. Lack of access may require the “blind” fitting of
flexible ducting, with increased risk of unseen kinks and
impaired efficiency.
The extractor is provided with a spigot suitable for
connecting 150mm diameter ducting.
Note
: the cross-sectional area of 150mm diameter ducting
is the minimum area consistent with efficient extraction.
Reducing the duct size seriously reduces performance.
The most efficient configuration is to duct straight through
an outside wall so try to position the cooker against an
outside wall when designing your kitchen.
Well installed, correctly sized rigid round ducting, or an
equivalent flat channel system will usually perform best,
with round semi-rigid (like flue liner) being a very good
alternative. Flexible (foil or plastic film) ducting is
economical but its use should be minimised as it gives the
worst performance and should only be used for very short
duct runs or initial connection and should be pulled taut to
prevent significant losses in extraction efficiency.
For maximum efficiency, ducting should be kept as short
and as straight as possible. Bends in the duct will degrade
performance so the number of bends in a duct run should
be kept to a minimum and be gradual and smooth to
prevent turbulence. Avoid kinks in flexible ducting, pulling it
WARNING
Proper care must be taken to ensure that the negative
pressures caused by high performance extraction
systems do not adversely affect the safe operation of
certain types of fuel-burning appliances (gas, oil or solid
fuel), including those installed in the kitchen and
possibly also those installed in other parts of the house.
Where such fuel-burning appliances are installed,
adequate ventilation MUST be provided in the room of
installation, located and sized such that the negative
pressure in the room created by the extractor does not
exceed 4Pa.
In case of doubt, do not operate the extractor and fuel-
burning appliance(s) simultaneously and consult an
appropriate (for the fuel type) expert for advice.
ELECTRICAL SAFETY
This appliance requires an earth connection.
Ensure that the supply voltage corresponds to that
marked on the rating label inside the extractor.
The extractor must be isolated from the electrical supply
before carrying out any cleaning or maintenance
operations.
FM900
Built-In Extractor
Installation, Operation and Maintenance Instructions