Kitchen Canopy Ventilation brochure » Our Kitchen Canopy Ventilation brochure illustrates the products we supply and additional systems we offer, their specifications and applications and a small selection of Case Studies. Areas covered include Lighting, Controls, Fire and Gas Safety and UV Filtration. Kitchen Ventilation We supply a wide range of kitchen canopy systems to meet the demands of the most modern commercial kitchens. Our Canvent Canopy systems can be configured to suit virtually any application, with a range of advanced features such as heat recovery, uv filtration, fire suppression and gas safety detectors can be fitted as necessary. We commonly provide our solutions for the commercial, healthcare, educational and private sectors and our products are increasingly popular in restaurants, schools, hospitals and hotels. Canvent Canopy Solutions Our extensive range of commercial kitchen canopies are designed for use in a wide variety of applications including schools, restaurants, nursing homes and other institutional buildings. Our canopies are manufactured from 304 (En 1.4301) or 316 (En 1.4401) where specified, all products are suitably braced to prevent product distortion and all joints are welded and polished. All of our canopy systems are manufactured to the strict guidelines of DW/172, British Standards and conform to HSE for kitchen ventilation systems. All canopies and associated components are thoroughly tested to ensure high standards to meet with our clients expectations. Our product range extends from simple condense canopies, extract only island or wall mounted canopies, through to our air injection island systems allowing both input and extract. All products can be configured to suit each individual application. If required, the input air can be pre-heated for additional internal comfort within the winter months. Wall mounted or island canopies can be manufactured to meet almost any dimension but typically 1000mm to 8000mm long. The system ductwork is manufactured and installed to incorporate cleaning and maintenance access doors to fully comply with DW/144 ductwork standards.

1. Kitchen Ventilation Systems
Island & Wall Mounted Canopies
Grease Control
Fire Suppression
Intelligent Control Solutions
Fans & Ancillaries

2. AN INTRODUCTION TO OUR KITCHEN VENTILATION
Airtherm Engineering Limited supply a wide
range of standard and bespoke kitchen
ventilation systems that can be designed and
installed to suit virtually any application to
meet the demands of the most modern
commercial kitchens.
We work closely with local authorities, M&E engineers
and main contractor’s, with the aim to ensure full
compliance to all current legislations. Our installation
engineers are competent in their field and carry all
necessary site certification with CSCS cards, IPATH,
PASMA and scaffold towers. Our engineers strive
towards excellence in each and every project which
they undertake.
We can also offer many bespoke solutions to clients
outside of the scope of ventilation and air conditioning.
Our highly skilled work force adapt at all types of light
to medium metal fabrication including stainless steel,
aluminium and mild steel.
If required, the input air can be pre-heated for additional
internal staff comfort during the cold winter months. All
products can be configured to suit the individual needs of
each application.
Our own Canvent Canopy systems can be configured to
suit virtually any application and a range of advanced
features such as heat recovery, UV filtration, gas safety
detectors and fire suppression devices can all be fitted
as necessary.
Manufacture
All canopies are manufactured from 304 (En 1.4301) or 316 (En
1.4401) stainless steel (where specified) and are suitably braced
to prevent product distortion. All joints are welded and polished.
Our Canopies are cut, punched and folded into sub sections and
factory assembled by means of computer controlled seam welds,
and non-visible mechanical fixings. Systems are manufactured
to the strict guidelines of DW/172, British Standards and
conform to HSE for commercial kitchen ventilation. Wall
mounted or island canopies can be manufactured to meet almost
any dimension but typically 1000mm to 8000mm long. The
system ductwork is manufactured and installed to incorporate
cleaning and maintenance access doors to fully comply with
DW/144 & TR/19 standards.

3. DESIGN, INSTALLATION & MAINTENANCE
Maintenance & Contracts
In our pursuit of customer satisfaction
we have now introduced our tailored
service contracts which offer complete
peace of mind, covering unexpected costs
from system isolation and dissatisfied
customers of your own.
All of our maintenance contracts are
made to meet the demands set by the
client and the specific requirements
dictated by the unique design and layout
of the ventilation system. Our engineers
will visit the client’s premises at regular
planned intervals to carry out agreed
works and report to the client ensuring
the system remains efficient and reliable
when they need it most.
It is crucial to regularly service your
ventilation system not only to maintain
correct function and avoid lost revenue
from unplanned closure of your premises
but also to minimise the risk of fire and
other health and safety factors.
By entering into a maintenance
agreement with us, you are fulfilling
your obligation ensuring procedures are
in place for regular checks.
Design Installation
Our installation engineers are
competent in their field. The all carry
the necessary site certification with
CSCS cards and hold the relevant
safety accreditations. Our engineers
strive towards excellence in each and
every project they undertake and are
carefully vetted to ensure that they are
fully trained and have adequate
experience in their field of operation.
Airtherm strive to keep up with the
changing demands of the industry in
order to maintain our proud position as
a market leader. From design to
installation, after sales to maintenance,
Airtherm Engineering Ltd have an
ongoing commitment to provide the
best available service for the customer.
By managing projects closely, adhering
to strict safety guidelines and
demanding the highest quality
workmanship, we continue to build our
reputation for completing projects on
time and within budget using the most
efficient solutions
We hold CHAS, Construction Online &
Safe Contractor accreditations to
satisfy clients of our commitment to
Health & Safety.
System calculations are quickly
available by entering the appliance
details and the intended kitchen
canopy configuration and
dimensions into our iCalc sizing
system.
We work closely with local
authorities, M&E Engineers and
main contractors to ensure full
compliance to current legislation.
Airtherm’s design department,
contract engineers and site
installation teams have a wide
range of knowledge and experience.
Projects are carried out to ensure
full compliance with all statutory
requirements and standards.
Whatever the requirements of your
project, we guarantee a solution of
the highest quality, that has been
rigorously tested and offers
outstanding performance in its
field.
AutoCAD drawings are produced
by our highly experience team of
engineers for approval.

4. GREASE, LIGHT & UV FILTRATION
Grease Filters Canopy Lighting
The lighting units are designed and
manufactured to deal with wide ranging
and varied commercial applications and
can deal with humidity, condense rich,
and hot and greasy environments.
These units are normally recessed into
the canopy ceiling providing easy
cleaning and maintenance of the unit
exterior. This also helps to greatly
reduce the build-up of grease and other
contaminates usually associated with
the commercial kitchen environment.
All of our lighting units are approved for
use in commercial kitchen applications,
meet with DW172 & HSE guidelines.
Face plates are satin finished, stainless
steel to match the hood interior.
UV Filtration
A UV filtration system can reduce
grease build-up and common
odours by using UV light to break
down organic material that can
plague kitchen canopies.
UV filtration reduces the need for
duct work cleaning and can prove
more efficient than conventional
filtration methods.
The UV Filtration works by using
UVC lamps to break down organic
material by a combination of
photolysis and ozonolysis and
destroys odours more efficiently
and cost effectively than
conventional systems.
All filters are manufacture from
stainless steel and provided with
grips for easy removal and
installation.
Baffle grease filters collect grease
and stop flames from penetrating
into the hood exhaust ductwork.
They are designed to prevent
flames from passing through the
baffles and can withstand various
temperature levels. The solid baffle
construction of each hood filter
ensures a reliable flame barrier
when you need it.
Practising efficient grease removal
lowers the risk of incidents such as
flare-ups.

5. VOLUME CONTROL DAMPERS
Principally designed for our
natural ventilation range, our
plastic volume control dampers
have a shut off level far
surpassing that of regular
volume control dampers and
even some shut off dampers.
Independent tests show no leakage
below 10Pa; the pressure most likely
to be found in natural ventilation
installations.
With even 10Pa rarely being exceeded
in natural ventilation situations, it is
clear how uPVC volume control
dampers can enhance the efficiency of
your new natural ventilation system.
Our Volume Control Dampers have
numerous features designed to give
maximum performance.
We use an aerofoil blade, shaped to
provide exceptionally low
resistance to air travelling over it.
The standard out of airstream linkage is
also fitted, protecting the precise gears
from dust and moisture.
This linkage system uses nylon gears and
wearing parts, coming together to produce
a damper with exceptionally low
operating torque. Not only does this make
it easier for you to adjust your damper
manually, but, if motorised, it means
dramatically reduced loading on actuators
and therefore an extended working life.
Airtherm have a large range of
both metal and uPvc dampers
in circular, square and
rectangular shapes with sizes
from 300mm to 1800mm.
Volume control dampers need not be
overly complicated. The only
requirements are that they should
have a low leakage when closed, not
create too much resistance when open
and should be easy to operate.
Series VCD Volume Control Dampers
satisfy all of these requirements - the
75mm blade pitch with a blade less
than 1cm thick at it's widest point,
results in very little resistance when
open, while the standard blade is
shaped perfectly to reduce leakage
when closed.

6. GRILLES & DIFFUSERS
A consistently popular product,
ceiling diffusers are effective
supply units suited perfectly to
modular ceiling systems.
Normally used in commercial
installations requiring an air change
rate up to about 10 times per hour.
Our louvre faced ceiling diffusers are
especially suitable where people are
working for long periods of time, and
draughts need to be avoided.
Ceiling diffusers are designed to
integrate into lay in T bar ceilings as
standard. However should you require
it, we can fit your CD into burgess
tiles or other tile systems.
Our HVC Series DD Double
Deflection Grilles are
recommended for supply in a
huge variety of applications.
The two rows of blades are set at 90
degrees to each other, with one row
set just behind the front most row.
Gaps between the blades are
sufficient to allow easy adjustment of
blades, enabling custom blow patterns
to be created. Whether these be
targeted towards one area or fanned
out to affect a wide area.
Bringing consistent high
performance, the standard Egg
Crate extract grille has now
been joined by the Egg Crate 45
degree grille, giving the same
performance.
Egg Crate Core is made from thin
aluminium strips arranged into a
lattice. The square holes in the core
are sized 12.5mm x 12.5mm, resulting
in a free area of over 90%. This core is
held within a one of two available
frames. Designed to integrate with the
wider range of grille frames, you can
be sure of design consistency whatever
grille you buy from us.

7. SupportsAttenuationVentilation Ductwork
The ventilation system ductwork
is manufactured and installed to
incorporate cleaning and
maintenance access doors to fully
comply with DW /144 ductwork
standards.
Ductwork selection can vary
dependant on our clients’ criteria;
the options include for spirally
wound, galvanised with or without
the required for mezz flanges or
even 1mm thick stainless steel. All
ductwork can be powder coated
internally and externally to any
colour within the BS or RAL
colour range.
For installation within ventilation
ductwork systems to reduce airflow
noise, these can be fitted with or
without a pod and come in a range
of sizes from 315 dia to 1250 dia
(other sizes available on request).
The end faces will have either
rivnuts/hank bushes to match the
flange details of any associated fan
or spigots if connecting onto spiral
or flexible ducting.
Melinex Lining can be added as an
optional extra in kitchen extract or
moist laden air.
The Big Foot Systems versatile range
offers an array of solutions to support
a variety of air handling units and
ventilation systems. Many larger
air-handling units are made up of
several sectional components that
can be individually crane lifted
directly onto rooftops. Frame kits for
most major manufacturer’s VRV/
VRF units are available from stock.
With the main plant positioned upon
the roof, there is generally a need to
install the associated auxiliary
services. M&E containment such as
ductwork, pipe and cable tray can be
supported from a number of auxiliary
support products.
DUCTWORK & ACCESSORIES

8. INTELLIGENT CONTROLS
Kitchen Ventilation Controls
Our unique kitchen ventilation controls and
intelligent sensors have been developed to
deliver optimum control and ease of use of all
our ventilation systems.
The VGPS-K-CO2 offers a complete single panel
package patented by our controls specialist
The system is easy to use because an LCD display
gives solutions and full status information.
The system ensures all fans are running before gas
can be used. It also carries out a gas pressure prove
on the cook line and continually checks that the
incoming gas pressure is sufficient.
In addition, it monitors the carbon dioxide level to
ensure that HSE set levels are not exceeded. Should
the carbon dioxide level rise above 2,300ppm the
panel LCD will advise staff to increase the ventilation
fan speed at the speed controllers.” The maximum
allowed level of carbon dioxide is 2,800ppm, as
published in HSE catering sheet 23 revision 1.
“It is a requirement that all new and
refurbished commercial kitchens have
their ventilation system interlock to the
gas supply in order to ensure the air
quality in the working environment”
All products are fully compliant to BS6173: 2009, Gas
Safe TB140BB100,BB101, IGEUP11 and IGEUP1A
Design and Support Features
Designed from listening to our clients’ requirements, including
kitchen staff.
Gas pressure measuring, true differential pressure across the
solenoid valve.
An engineer can see kitchen and valve seat gas leakage on the
LCD.
An engineer can also see gas pressure and carbon dioxide levels
on the LCD.
All panels designed built and supported by Medem UK.
Compact design: H183mm, W212mm, D97mm

9. INTELLIGENT CONTROLS
Pressure Sender
The differential gas pressure
proving method, as developed
and patented by Medem,
operates by measuring the
pressure differentially across
the inlet and the outlet of a
gas isolation valve using micro
transducers. All other systems
can only see the gas pressure
when the valve is open.
Differential proving enables the
supply pressure to be measured
before the associated isolation valve
is opened. This means that in the
event of gas over pressure or under
pressure the valve would remain
safely shut and reported on the
system LCD.
Carbon Dioxide Sensor
CO2 detection is designed to
deal with its production either
via cooking or biological
processes (namely breathing).
CO2 is roughly equal weight
and density as air it will
therefore naturally diffuse
equally within a space.
CO2 detectors are for the purpose of
monitoring the air quality within an
area to ensure adequate ventilation
is taking place, as such the detectors
should be located with the main body
of the room within the “breathing
zone” (4 to 8 feet) but not in such a
place they'd likely be exposed to a
potential release point (i.e. someone
breathing on it).
Current Monitoring
It is a requirement that any
mechanical ventilation within
a kitchen environment (both
supply and extract) is
switched on and running
before the use of any gas
appliances can take place.
With the VGPS-K if the ventilation
is not switched on, the LCD display
informs the operator that the fans
are off and to switch on the fans
and restart the panel.
With the fans on and running the
system will then perform a down-
stream integrity check using our
patented “Differential Pressure
Proving” method.

10. INTELLIGENT GAS VALVES
Gas Solenoid shut-Off Valves
Series 2000 Solenoid Valves are Safety
Shut-off or Control Valves for use on gases
in gas families 1, 2 and 3 and are also
suitable for use with air within the valves
pressure range (see specification). Two
valves may be bolted together in tandem to
form a double block valve.
Series 2000 is a range of Solenoid Operated Safety
Shut-off Valves. Their primary application is the on/off
control of low pressure 1st (town gas), 2nd (natural gas)
and 3rd (LPG) family gases, although they may also be
used as control valves for devices such as automatic
burners and for low pressure air applications.
The valves are available in screwed connections from ¾”
up to 2” and have Flow Adjustment as a standard feature.
Slow Opening valves are available and CPI Switches are
available as an extra. All valves are supplied with plugged
Pressure Test Points in both Inlet and Outlet Ports on both
sides of the valve.
The valve construction is of an aluminium die-cast body
with a solenoid actuator and is maintenance free. There
are no user serviceable parts to the valve. Upon being
energised, the fast opening valve will open instantaneously
whilst the slow opening valve will open.
Features
* CE Certificated
* Range from ¾" to 2"
* Flow Restrictor as standard
* Flow Regulation from 0 to 100%
* Full-wave Rectified Coil for quiet operation
* Normally Closed operation
* 200mbar maximum working pressure
* Pressure Test Points on Inlet and Outlet
* Approved to EN161 Group 2, Class A
* Available as Fast or Slow Opening
* Built in filter
* Available with Closed Position Indicator Switch
* 230V, 110V and 24V AC 50/60Hz Versions
* Range of accessories available
* Supplied with PG11 Cable Gland

11. ANSUL FIRE SUPPRESSION
Safeguarding kitchens with Ansul protection
The R102 System conforms to NFPA standards 17, 17a and 96 and is UL300 listed by
Underwriters Laboratories Inc . The system can be supplied with nozzles, detectors, cartridges,
liquid agent, fusible links, pulley tress and elbows as required for the specific commercial kitchen
or restaurant application.
You can choose from either of the following:
Appliance-Specific Design
The most efficient fire protection is accomplished when nozzles are selected and aimed at specific
hazard areas on each appliance.
Overlapping Appliance Protection
When flexibility and simplicity are most important, nozzles are placed in a straight line
arrangement providing overlapping agent discharge patterns.
Ansul have set the standard for
kitchen fire suppression, detecting
and suppressing fires throughout
the industry. A unique low pH
liquid fire suppressant is used
which is equipment friendly and
cleans up fast once discharged.
“Ansul R102 Suppression System is
an invaluable resource for kitchens”
Ansul Fire
Suppression
systems, before
it’s too late!

12. CASE STUDIES
CANOPY & SUPPRESSION
ELMHURST SCHOOL
We liaised with both the
consultant, Fowler Martin,
and the contractor, AC Preou
at all times during the
installation of this Induction
Island Canopy.
The system featureed an
Ansul R-102 Fire Suppression
system, fully recessed grease-
proof lights and a Medem
Control Interlock system.
KITCHEN VENTILATION
HALLSVILLE PRIMARY SCHOOL
Our track record of successful
and efficient projects was
demonstrated by this 'Canvent'
island kitchen canopy
installation for the London
Borough Council of Newham.
The 4100 x 2200 x 600 deep
island kitchen canopy was
fitted with grease proof,
recessed lights, stainless steel
grease filters and a R102
Ansul fire suppression system.
WALL MOUTED SYSTEM
TIVIDALE SCHOOL
We worked closely with
Sandwell MBC to complete
this installation of a kitchen
ventilation system, complete
with control solution that
featured a thyristor, speed
regulators and gas interlock.
The existing canopy was
removed and a stainless steel
wall mounted extraction
canopy was designed and
installed in it's place, with a
provision for make-up air.
ISLAND CANOPY SYSTEM
EDGBASTON HIGH SCHOOL
This project involved the supply
and installation of multiple
kitchen ventilation canopies at a
well-known school in Edgbaston,
Birmingham
The main island canopy sized at
9.0m x 3.0m, complete with
grease baffle filters and lighting.
A condense channel with slope
was designed complement the
existing feature of a 1950's glass
construction.

13. OFFICE: 0844 809 2509
MOBILE: 07715 360958
FAX: 01562 887312
EMAIL: sales@airtherm.co.uk
WEBSITE: www.airtherm.co.uk
AIRTHERM ENGINEERING LIMITED
UNIT 8a, GAINSBOROUGH TRADING ESTATE
RUFFORD ROAD, STOURBRIDGE
WEST MIDLANDS, DY9 7ND