Specification for the Colt 3UL Universal louvre system
Manufacturer:
Colt International Limited
New Lane, Havant, Hampshire. PO9 2LY
Telephone 023 9245 1111
Fax 023 9245 4220
TRIPLE BANK LOUVRE
(a) Reference: Colt Universal Louvre 3UL/SH (shallow section)
Blade pitch and angle: 50mm at 45º
(b) Reference: Colt Universal Louvre 3UL/DH (deep section)
Blade pitch and angle: 100mm at 45º front louvres, 50mm at 45º rear louvres
No. of louvre banks:
3 (Triple Bank) - for tangential separation
Special Features:
Louvre blades shall be roll-formed to an aerodynamically efficient profile to achieve "tangential separation" and clipped to concealed structural supporting mullions rather than riveted or screwed, to allow for thermal expansion without distortion along their length. Water will drain efficiently onto the cill through the mullions.
Mullions shall be concealed at maximum 1250mm centres and their points of support along their length shall be in accordance with prevailing site wind pressures (as calculated and specified by a structural engineer) in accordance with BS 6399 Pt. 2. Mullions will be manufactured from 2mm sheet so that the associated supporting steelwork is kept to a minimum.
Performance:
The louvre system shall achieve a minimum performance coefficient (Cv) of 0.277 (inlet), 0.22 (extract).
The louvre system shall achieve the following weathering effectiveness when tested at all velocities to EN 13030: 2001:
Class A3 - up to 3.5m/s suction velocity.
Material: All principal components manufactured from [SELECT]:
Aluminium alloy (Colterra)
Anodised quality aluminium
Galvanised mild steel
Pre-coated steel: - Celestia, HP200 & HPS200
Stainless Steel
Decorative Finish [SELECT]:
Mill finish (Aluminium)
Anodised
Stoved Polyester powder
Acrylic - Stoved Organic
Stoved Polyvinylidene Fluoride (PVF2)
Coverage [SELECT]:
Total coverage: - All exposed surfaces and edges of components and assemblies are coated, excluding fixings and rivets, i.e. the insides of hollow sections will be protected.
Partial coverage: - Only external louvre blades, frames, corners and sills are coated, the remaining components are mill finish.
Ancillary items [SELECT]:
Doors:
Visible frame double door
Visible frame single door
Concealed frame double door
Concealed frame single door
Turret Units, Circular and Triangular Panels
Please refer to Colt International for further information.
Birdguard [SELECT]
Aluminium
Galvanised
Stainless Steel
Insect Mesh [SELECT]
Aluminium Woven mesh wire treated coloured charcoal grey.
(With Insect Mesh, the design should allow for additional resistance to airflow and reduced flow rate performance).
Blanking Panels [SELECT]
Single Skin Aluminium (uninsulated) mill finish
Single Skin Aluminium (uninsulated) with external decorative polyester powder paint finish to match louvres.
Insulated extruded polystyrene 50mm thick in LB Styrofoam or equivalent.
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