High Performance Standard weather louvres

Publication Standard Weather LOUVRES SEPT 2005 Section 1 J C V E N T S Standard Weather Louvres high performance Series OJ and OL standard louvres have been designed to provide weather protection to ventilation openings in buildings. In addition to the modular sizes shown it is possible to specify OJ and OL louvres for cladding, louvre screens, access doors and other architectural features. Louvres are conventionally specified in terms of the building aperture size, and suitable tolerances are built in before manufacture. Size should be given in terms of Width ‘W’x Height’H’ Standard finish stove silver Special finishes are available to suit most architectural requirements and include: Natural satin anodised (AA25 micron) Colour Anodised Polyester powder coat Stoved epoxy Stoved acrylic Syntha Pulvin PVF2 Primed Mill OJ nd OL louvres are composed of frame and blade assemblies manufactured to suit the building aperture size. Different formats are available to suit aesthetic requirements: OJ with 75mm pitch and OL with 38mm pitch blades. Frame options include flanged and recessed types. An adjustable louvre option is available for applications requiring automatic or manual closure/ opening of the louvre. OJ and OL louvres are manufactured from extruded aluminium sections which conform to BS1474 using material specification HE9. Frames and blades are screwed, riveted or cleated to form a robust structure. 2 Std Weather Louvres introduction description size convention manufacture finishes accessories applications The most common application of OJ and OL louvres is to protect the supply and exhaust duct openings through the building fabric from the ingress of water. Louvres may also be used for transfer applications where free flow ventilation of rooms is required to meet building regulations. Bird or vermin guard (BS) galvanised mesh fixed to the rear of the louvre section. Insect screen (IS) in stainless steel fixed to the rear of the louvre. Rain lip (RL) in the form of an extended bottom blade. OJ - 75mm Pitch FIXED BLADE LOUVRES OJ / ADJ - 75mm Pitch ADJUSTABLE BLADE LOUVRES OL - 38mm Pitch FIXED BLADE LOUVRES Page 4 - 5 Page 6 - 7 Page 8 - 9 Close MOTORISED UNIT Page 10 Sitework Transport Handling Installation and Maintenance Page 11 Performance data Back page Other JC Vents literature 3 OJ and OL Range overview contents J C V E N T S Large format, fixed blade, weather louvres with a choice of flanged or recessed frame systems. Blades are pitched at 75mm and the lower blade can be extended to form a rain lip to carry surface water away from the wall. OJ louvres are suitable for most weathering applications. O/A Nominal + 57mm 5mm Bird Wire Mesh fitted to rear Duct or Opening Height Nominal Louvre Height O/A Frame 64mm 75mm Nominal Opening - 19mm 38mm O/A Nominal - 3mm Bird Wire Mesh fitted to rear Duct or Opening Height Nominal Louvre Height O/A Frame 64mm 75mm 12.5mm 4 OJ / F flanged frame OJ / R recessed frame OJ Louvre F O = S t o v e S i l v e r F 1 = A n o d i s e d N a t u r a l F 2 = A n o d i s e d C o l o u r F 3 = P o w d e r C o a t C o l o u r F 4 = S t o v e d E p o x y C o l o u r F 5 = S t o v e d A c r y l i c C o l o u r F 6 = S y n t h a P u l v i n F 7 = P r ime d C o a t F 8 = Mi l l F i n i s h Wi d t h x H e i g h t (mm) ( N omi n a l o p e n i n g ) . B S = B i r d S c r e e n I S = I n s e c t S c r e e n E B = E x t e n d e d B l a d e OJ louvres are manufactured to suit the building aperture sizes on a contract basis. For individual modular louvres the following ordering designation should be applied. B S = B i r d S c r e e n I S = I n s e c t S c r e e n E B = E x t e n d e d b o t t om b l a d e Larger sizes are available in sections. F = F l a n g e d R = R e c e s s e d Louvre free areas, pressure loss and general selection data are shown o

For more information on High Performance Standard weather louvres talk to Brooke Air Sales