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Airtherm grilles & louvre booklet

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Grilles and Louvres booklet » …

Grilles and Louvres booklet »

Our grilles and louvres booklet covers the different types of grilles, diffusers, external louvres and dampers we supply. The booklet includes the different sizes, specifications, dimensions, pictures and safety information.


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  • 1. 2013 product line Grilles Diffusers External Louvres Dampers
  • 2. www.airtherm.co.uk Grille & diffuser range Single deflection and fixed blade grilles Series SD & FB Single deflection grilles have a single bank of fully adjustable blades for throw adjustment in one plane. Fixed blade grilles have the blade pack fixed at either 0°, 15° or 45°. Double deflection grilles Series DD Double deflection grilles add a second set of adjustable blades, set at 90° to the first set. This allows throw adjustment in both planes, allowing greater throw adjustment than single deflection grilles. Stock product The following sizes are kept in stock for quick delivery. Satin anodised and RAL9010 available. 1502, 2002, 2502, 3002, 3502, 4002, 4502, 5002 200 x 150, 300 x 150, 300 x 200, 400 x 200 25mm flat (Opt) A Nominal + 30mm B 46mm C 90mm D 25mm 32mm bevelled (Std) A Nominal + 45mm B 46mm C 90mm D 32mm 25mm flat (Opt) A Nominal + 30mm B 46mm C 90mm D 25mm 32mm bevelled (Std) A Nominal + 45mm B 28mm C 72mm D 32mm 2
  • 3. www.airtherm.co.uk Egg crate grilles Series ECG The industry standard extract grille, egg crate grilles have a free area of around 90%, meaning they can handle large air volumes with minimal pressure drops or noise generation. 30mm flat (Opt) A Nominal + 30mm B 28mm C 72mm D 30mm 37mm bevelled (Std) A Nominal + 45mm B 28mm C 70mm D 37mm Stock product The following sizes are kept in stock for quick delivery. RAL9010 finish, with and without opposed blade dampers. 1502, 2002, 2502, 3002, 3502, 4002, 4502, 5002, 5952 Overall face Non vision grilles Series NV Designed to block line of sight from all angles (NV4 from most), non vision grilles are used where privacy must be maintained, like bathrooms and doctors surgeries. NV1 NV2 Door NV3 Darkrooms NV4 Surface mounted 3
  • 4. www.airtherm.co.uk Grille & diffuser range continued Curved blade (eyelash) grilles Series CB Curved blade grilles have an unconventional appearance, and allow throw adjustment thanks to the single bank of individually adjustable blades. 1, 2, 3 and 4 way blow set ups available. Perforated plate grilles Series PPG Perforated plate grilles use a perforated steel core, to create a tamper resistant unit providing a stable downward throw, perfect for laboratories, hospital operating theatres etc. Deflector plates can be fitted behind the face to allow different blow patterns to be created. 30mm flat flange (Opt) A Nominal + 30mm B 28mm C 72mm D 30mm 37mm bevelled (Std) A Nominal + 45mm B 28mm C 70mm D 37mm 25mm flat (Opt) A Nominal + 30mm B 46mm C 90mm D 25mm 32mm bevelled (Std) A Nominal + 45mm B 28mm C 72mm D 32mm 4
  • 5. www.airtherm.co.uk ° ° ° ° Linear bar grilles Series LG An extremely versatile grille series. Blade profiles include 0° with 3mm or 6mm tops, 15° and 45°, all of which can be set on a 12.5mm or 20mm blade pitch. Other options like removable and hinged cores are also available. If required a reinforced linear bar grille can be offered, for use in floors or walls where impact resistance is required. 31mm flat flange (Opt) A Nominal + 30mm B 33mm C 76mm D 31mm E Actual neck + 15mm 36mm bevelled (Std) A Nominal + 45mm B 33mm C 76mm D 36mm E Actual neck + 9mm Computer room floor grilles - BS Heavy Grade Series CFLG Designed to suit raised access flooring systems, computer room floor grilles have been tested to BS EN 13264:2001. Manufactured from extruded aluminium throughout, the grilles have supreme strength, yet are lightweight enough to allow one man to lift and fit comfortably. Stock product 600mm2 units are kept in stock for quick delivery. 5
  • 6. www.airtherm.co.uk Grille & diffuser range continued Fixed blade swirl diffusers Series FSW Fixed blade swirl diffusers are extremely effective diffusion units. They create a downward throw of swirling air which rapidly pulls in surrounding air, mixing the supplied and resident air very effectively. Adjustable blade swirl diffusers Series SWA Just like their fixed counterparts, adjustable swirls are extemely effective diffusion units. Instead of pressed blades fixed at an angle, these have individually adjustable, matt black deflector blades set behind the face. This allows clockwise, anti-clockwise or straight down throws to be created. SWF A (mm) B (mm) C (mm) D (mm) 1 595 254 80 40 2 595 356 100 40 3 595 457 160 40 4 595 533 200 40 Stock product The following sizes are kept in stock for quick delivery, RAL9010 finish. 254mm, 356mm, 457mm, 533mm (Core sizes) SWA A (mm) B (mm) C (mm) 1 595 537 240 Dimensions explained on fixed swirl diagram. Dimension B describes diameter between outermost points of deflector blades. Not a small spigot as with fixed swirls. 6 Stock product Adjustable blade swirl diffusers are kept in stock for quick delivery, RAL9010 finish.
  • 7. www.airtherm.co.uk Ceiling diffusers Series CD A consistently popular product, ceiling diffusers are found in almost every commercial building. Made from extruded aluminium throughout, ceiling diffusers are guaranteed to be rattle free, unlike some cheaper pressed models. All sizes under 1200mm x 1200mm have a spring-loaded removable core as standard. Drum jet diffusers Series DJS Providing an exceptionally long throw, drum jet diffusers are supply units capable of handling large air volumes whilst also giving maximum control over throw direction. Stock product All sizes shown in the table are kept in stock for quick delivery, in both RAL9010 and satin anodised finish. Size Nominal (mm) Overall (mm) Depth Depth c/w OBD Depth c/w OBD & VEDW H W H A 244 164 297 208 62 106 194 B 321 373 C 473 525 D 625 678 E 524 259 576 303 100 144 232 F 651 703 G 778 830 H 905 957 Stock product The following sizes of four way blow ceiling diffuser are kept in stock for quick delivery. RAL9010 finish, with and without opposed blade dampers. 1502, 2002, 2252, 3002, 3752, 5952 Overall face 7
  • 8. www.airtherm.co.uk Grille & diffuser range continued Linear slot diffusers Series LSD Commonly seen in commercial installations, runs of unlimited lengths can be created using multiple linear slot diffusers. When used for supply, matt black internal deflectors can be specified enabling throw adjustment. End caps and pressure equalising grids can also be specified. Slot boxes to suit can also be supplied. Linear ceiling diffusers Series LCD Much like linear bar grilles in construction, linear ceiling diffusers use a larger 45° blade set at a 20mm pitch. This creates a large free area for high air volumes, whilst also having the blade surface to deflect air effectively. Available in one or two way blow models, with two ways having an equal or unequal split. 32mm bevelled (Opt) A Nominal + 45mm B 46mm C 91mm D 25mm 25mm flat flange (Std) A Nominal + 30mm B 46mm C 91mm D 32mm Slot number Overall face (mm) Actual neck (mm) 1 76 40 2 115 78 3 154 117 4 193 155 5 232 193 6 271 232 7 310 270 8 349 309 8
  • 9. www.airtherm.co.uk Perforated plate diffusers Series PPD Using the same outer frame as standard louvre faced ceiling diffusers, perforated plate diffusers are tamper resistant, and create a stable throw creating areas of clean supplied air. This is in contrast to other units like ceiling diffusers which are designed to mix supplied and resident air as quickly as possible. Small format circular diffusers Series SFCDA Normally found in arenas, exhibition centres etc, circular diffusers are suitable for use in large open plan areas requiring high changeover rates. SIZE DIMENSIONS (mm) A B C 150 257 149 225 200 307 199 275 250 357 249 325 300 407 299 375 350 457 349 425 9
  • 10. www.airtherm.co.uk Intumescent fire blocks Fire rated for 1 hour, intumescent fire blocks expand quickly when exposed to flames to create a barrier through which fire and smoke cannot pass. The intumescent material is covered with a smooth finish to help prevent dust build up and aiding cleaning. Grille & diffuser range continued Pressed steel grilles, diffusers and registers A cost effective type of grille, normally used in domestic warm air heating systems. Can also be used in fire doors in conjunction with intumescent fire blocks or slimline fire dampers. Pressed steel ceiling diffuser No.28 Type B Incorporates a cord operated damper Pressed steel floor diffuser Incorporates a roller operated damper Pressed steel grille No damper Pressed steel register Incorporates a lever operated damper 10
  • 11. www.airtherm.co.uk 11 Curved access doors Series ADC Galvanised steel with blue plastic handles. Rubber seal between inner and outer parts seals the duct once the door is tightened. Single blade dampers Series SBD A cost effective volume control damper for use in small diameter ductwork where a full shut off is not required. Fitted with a locking quadrant for simple operation. Body length 170mm on all sizes. Stock product The following sizes are kept in stock for quick delivery. 100mm, 125mm, 150mm, 200mm, 250mm, 300mm, 315mm. Stock product The following sizes are kept in stock for quick delivery. Size To suit duct diameter 180mm x 80mnm 100mm / 125mm 250mm x 150mm 150mm / 160mm 250mm x 150mm 180mm / 200mm 250mm x 150mm 250mm 250mm x 150mm 300mm / 315mm 250mm x 150mm 350mm / 355mm 250mm x 150mm 400mm / 500mm 400mm x 300mm 400mm 400mm x 300mm 450mm 400mm x 300mm 500mm 400mm x 300mm 560mm 400mm x 300mm 630mm 400mm x 300mm 710mm
  • 12. www.airtherm.co.uk12 Grille & diffuser range Grille & diffuser options Polyester powder coating The majority of grilles and diffusers shown in the catalogue can be polyester powder coated to any RAL or BS colour. Some products cannot be powder coated due to plastic parts etc. Please see the table. Nylon coating A specialist finish, nylon coating is used in favour of polyester coating where extreme durability or resistance to static electricity build up is needed. These qualities mean computer room floor grilles are often nylon coated, as static electricity build-ups in data centres can be disasterous. Opposed blade dampers Fitted to the rear of many grilles and diffusers, opposed blade dampers are used to trim the airflow through the terminal. Suitable for use in supply or extract situations. Please see the table for which products can be fitted with OBDs. Plenum boxes Series PB Although not a grille or diffuser, plenum boxes are just as integral in the majority of ventilation systems. Fire rated plenum boxes are available. Grille/Diffuser type PPC OBD Notes Single deflection Fixed blade Double deflection Egg crate Non vision Curved blade Perforated plate Linear bar Computer room floor Pressed steel grille x Pressed steel register x x Includes damper Pressed steel diffuser x x Includes damper Ceiling diffuser Drum jet Linear slot Linear ceiling Circular diffuser x Includes butterfly damper Fixed swirl x Adjustable swirl x x RAL9010 only
  • 13. www.airtherm.co.uk 13 Aluminium dampers Volume control damper Series VCD A large format, all aluminium damper, HVC VCDs can be made in larger sizes than their steel counterparts. Using a protected push rod linkage means these dampers require minimal torque to operate, even at large sizes. Back draught shutter / Non return damper Series BDS Designed to permit airflow in one direction only, back draught shutters are fully aluminium for excellent durability. Blades can be linked and weighted if required to enable the damper to open only once the required pressure has been reached.
  • 14. www.airtherm.co.uk External louvre range Standard single bank louvres Series WL 38mm, 50mm and 75mm pitch single bank louvres. Single bank of blades provide good protection against rain ingress, whilst preserving 50% free area for high airflow. Flanged, reversed frame, recessed frame and concealed (not on 38 pitch) units available. Bird and insect mesh optional. Stainless steel & galvanised louvres Series WLSS & WLG Bespoke made to order, stainless and galvanised louvres can be made to replicate a regular format or custom made to your own dimensions. Grades of stainless available are 430, 316 and 304. Stock product The following sizes of 38mm pitch standard louvre are kept in stock for quick delivery. Mill finish, powder coating to RAL/BS colour optional. 1502, 2002, 2502, 3002, 3502, 4002, 4502, 5002, 5502, 6002, 7002, 8002, 9002, 10002 WL38 WL50 WL75 WL100 14
  • 15. www.airtherm.co.uk Acoustic louvres Series AL Using a two part hollow aluminium blade forming a cavity which is then filled with mineral wool, acoustic louvres prevent noise transfer without impeding airflow. Available in 150mm, 300mm (standard) and 600mm deep models. Sand trap louvres Series STL Designed to be the first stage of filtration, sand trap louvres catch and collect airbourne particles like sand and grit which would otherwise clog up finer filters inside the ventilation system. Constructed from two banks of interlocking vertical channels, all straight paths through the unit are eliminated. Any caught material then falls onto the slanted cill and is ejected through the front of the louvre. 15 BSRIA testing to BS EN 13181:2001 Tested by BSRIA to BS EN 13181:2001, sand trap louvres have been proven over 90% effective at 0.5m/s wind velocity, and over 60% effective at 1 m/s wind velocity.
  • 16. www.airtherm.co.uk External louvre range High performance louvres - Class A Series HPL With the addition of two banks of vertical channels behind a standard louvre, high performance louvres have been tested to confirmed to give Class A levels of rain protection at velocities up to 0.5m/s. The channels prevent any straight path through the unit, catching any rain or spray which made it past the louvre blades. This caught water then falls onto a special slanted drip cill which quickly ejects it through the louvre face. Penthouse louvres Series PHL Commonly used in natural ventilation systems, penthouse louvres are perfect for high efficiency installations, like the new generation of school buildings and hospitals. Class A Penthouse Louvres can be manufactured using the same blade arrangement as high performance louvres shown above. Options include: Ÿ Doors. Ÿ Internal dividers (insulated or un-insulated). Ÿ Flat, single slant, double slant and HIP roofs. 16
  • 17. www.airtherm.co.uk External louvre options Polyester powder coating All louvres shown in the catalogue can be polyester powder coated to any RAL or BS colour. Nylon coating A specialist finish, nylon coating is used in favour of polyester coating where extreme durability or resistance to static electricity build up is needed. Fixing methods Although normally drilled on site, louvres can be supplied with face fixing holes in the flange, or rear mounted fixing lugs. Bird mesh Screwed to the back of louvre blades, bird mesh prevents large objects like leaves, rubbish and birds being able to penetrate the louvre. Bird mesh has no real effect on airflow. Insect mesh With much smaller gaps than bird mesh, insect mesh prevents all but the smallest objects penetrating the louvre. The vast majority of insects and debris are caught. Insect mesh will reduce a louvre’s free area. 17
  • 18. www.airtherm.co.uk Steel dampers S100 Fire Dampers S100 Fire Dampers are standard fusible link operated curtain type fire dampers. Spring driven to enable installation in vertical or horizontal alignments, S100 dampers are available with HEVAC, plasterboard or curtain frames and can be fitted with fixing lugs to suit drop rod installa 18 Certification S100 Fire Dampers have been tested to and passed: BS1366-2 (ISO10294-1): 4 Hour fire test at 300 Pa. Test conducted by Building Research Establishment. BS476-20: 6 Hour fire test. Test conducted by Warrington FRC. Fire damper cases are manufactured in accordance with DW144. Options Installation frames: HEVAC Plasterboard Curtain Fixing lugs Material: Fully galvanised Stainless blade pack & galvanised case Fully stainless Stainless available in 430, 316 and 304 grades. Connection types: Square spigotted Circular spigotted Flat oval spigotted S200 & S300 Fire Dampers S200 fire dampers are designed to be fitted inside ductwork and as such have no spigot. Spring driven they can be installed vertically or horizontally. S300 fire dampers are designed for use in fire doors as an alternative to intumescent dampers. Exceptionally slim at 38mm deep, they are gravity driven and so must be installed vertically with the blade pack at the top. Certification: S200 S200 Fire Dampers have been tested to and passed: BS1366-2 (ISO10294-1): 4 Hour fire test at 300 Pa. Test conducted by Building Research Establishment. BS476-20: 6 Hour fire test. Test conducted by Warrington FRC. Certification: S300 S300 Fire Dampers have been tested to and passed: BS476-20: 6 Hour fire test. Test conducted by Warrington FRC. Options Material: Fully galvanised Stainless blade pack & galvanised case Fully stainless Stainless available in 430, 316 and 304 grades. Connection types: Square flanged
  • 19. www.airtherm.co.uk 19 S600 Fire Smoke Dampers S600 Fire Smoke Dampers are as much a life safety device as a way to protect buildings. Having an opposed blade construction and fitted with actuators, they can be remote operated upon detection of smoke or fire anywhere in a building. We can supply and fit the full range of Belimo Fire Smoke Damper actuators to S600 dampers. Certification S600 Fire Smoke Dampers have been tested to and passed: BS476-20: 6 Hour fire test. Test conducted by Warrington FRC. Fire damper cases are manufactured in accordance with DW142. Options Installation frames: HEVAC Plasterboard Curtain Fixing lugs Material: Fully galvanised Stainless blade pack & galvanised case Fully stainless Stainless available in 430, 316 and 304 grades. Connection types: Square spigotted Circular spigotted Flat oval spigotted S900 Volume Control Dampers S900 Volume Control Dampers are a general purpose unit, best suited to sizes under 1m2. Manufactured from roll formed galvanised or stainless steel and with a fully protected gear drive mechanism, S900 VCDs are extremely durable and require minimal maintenance. We can supply and fit the full range of Belimo actuators to your new S900 Volume Control Dampers. Options Material: Fully galvanised Stainless blades & galvanised case Aluminium blades and galvanised case Fully stainless Stainless available in 430, 316 and 304 grades. Connection types: Square flanged Square spigotted Circular spigotted Flat oval spigotted
  • 20. www.airtherm.co.uk Plastic dampers for natural ventilation 20 uPVC volume control damper showing total seal Extruded uPVC frame and blades. Integrated flexible plastic blade nose seals. Brush side seals. Rolled steel section inside each blade for reinforcement (not exposed to airstream). Stainless steel screws to join frame (not exposed to airstream). White. Minimum size 300mm x 300mm / 300mm Ø. Maximum size 1000mm x 1000mm / 1000mm Ø. Above these sizes units would be made in sections. Precision linkage Manufactured from highly corrosion resistant materials, the custom designed gearset is so precise it can drive up to 10 blades and cogs with very limited play, for maximum performance even at large sizes. Corrosion resistance In coastal or swimming pool applications, traditional steel dampers will corrode very quickly. uPVC on the other hand has excellent resistance to salt and chlorine, and cannot rust. Overview Ultra high shut off Excellent corrosion resistance The revolutionary uPVC Volume control damper incorporates a copyrighted and never before seen feature for a plastic volume damper. It’s unprecedented performance originates with the unique ‘Eccentric Aerofoil’© blade design. This unieu, incorporates a blade with an off centre axis. This enables the edge seal to be complete, and uninterrupted by blade axles. Combine this with the integrated, specially designed blade nose seal which fuses the blades together on closure, a performance emulating that of a full shut off damper is achieved, whilst still providing the excellent functionality of a traditional volume control damper. Specifications: Materials: Finish: Sizes:
  • 21. www.airtherm.co.uk 21 Model B - Square, spigotted. Model C - Circular, spigotted. Model D - Flat oval, spigotted. Model A - Square, no spigot. Ultra high shut off In independent tests, large format uPVC volume control dampers yielded leakage results normally only achieved by dedicated shut off dampers. The VCD sent for testing had a nominal size of 1000mm x 806mm, the large size tantamount to our confidence in the damper. 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. No cold bridge Close a steel or aluminium volume control damper, and you will go on losing heat, not through airflow but conduction of heat from one side to the other. HVC large format uPVC volume control dampers have a theoretical U value of 0.973W/m2K when closed, atleast 40 times better than a steel damper and 250 times better than an aluminium unit. Of course this can help to cut heating bills, and reduces the carbon footprint of any building using them. *Figures sourced from www.engineeringtoolbox.com Leakage (1000mm x 806mm uPVC VCD) m3/s m3/hr/m m3/hr/m2 10Pa 0 0 0 25Pa 0.000857 0.29 3.83 50Pa 0.002850 0.97 12.73 75Pa 0.004975 1.69 22.22 100Pa 0.005398 1.83 24.11 150Pa 0.007909 2.68 35.33 Thermal conductivity of steel and aluminium* Steel Aluminium W/mK 40 250 Btu 23.12 144.46
  • 22. Ÿ Flues & chimneys Ÿ Natural ventilation & lighting Ÿ Kitchen ventilation Ÿ Air Conditioning Ÿ Heat pumps & renewables Ÿ Solar photovoltaic www.airtherm.co.uk T: 0844 809 2509 F: 01562 887312 M: 07715 360958 sales@airtherm.co.uk Unit 8a Gainsborough Trading Estate Rufford Road Stourbridge West Midlands DY9 7ND