Halton USS – External louvre

Overview

• External louvre for air intake and exhaust to prevent rainwater, snow, leaf and animal ingress
• Rainwater ingress penetration efficiency of approx. 95%
• Excellent operation based on special front edge blade profile and side grooves
• Grille and steel mesh section detachable from outside
• Polyester-painted galvanised steel as standard finish

Product models and accessories

• Modular construction available for large sizes
• Models available made of painted, unfinished or anodised aluminum, stainless steel (AISI 316L) and copper
• Model with circular duct connection also available (USD)

Dimensions

At the joint between modules, the dimension is 105 mm.

In addition to standard sizes, other sizes can be specially ordered. The maximum nominal size is 1200×1000 mm.
It is possible to have a continuous grille of modular design when the installation length is greater than 1200 mm. The maximum total length is 20 m.

Halton USD

Material

Function

Air is supplied or extracted through the horisontal blades. The design of the grille prevents rainwater from reaching the ductwork. The slot between the frame and the top blade is sealed, thus preventing rainwater from entering the ductwork from above. Drops of water are collected in the grooves at the front edge of the blades. Water flows to the side grooves, where it drops down.

Blade construction

Depth of blade 65 mm, distance between blades 50 mm, free area 50%

Water penetration prevention (USS/I)

Water penetration rating per square meter of louvre tested according
standard EN 13030:2001.   Core velocity at free duct area of louvre size.

Installation

Code description
1.    Frame
2.    Blades
3.    Steel mesh

The grille is suitable to be screw-fixed into a prepared masonry wall opening.
Drill holes in the flanges of the frame on the site.

The dimensions of the grille are given as the nominal dimensions of the opening.

Installation of modules

Code description
1.    Horisontal support
2.    Vertical support
3.    Steel mesh
4.    Bolt and nut (M8 x 10)

In a modular installation, the frames of adjacent modules are bolted together before installation of the louvre sections.
In large modular installation (heigth > 2000 mm) the louvres shall be installed with a support structure (not included in delivery).

Servicing

If required, the grille is cleaned with a soft brush.

Specification

The outdoor louvre is manufactured from galvanised steel with an painted finish.
The louvre includes mesh fitted behind the grille.
The outdoor louvre is effective in preventing rainwater, snow, leaves, and animals and other objects entering the ductwork.

The louvre has a rainwater prevention capacity of at least 90% (EUROVENT 2/5).
The louvre is suitable for medium and high airflow rates.

Order code

USS/S-W-H

S  = Model
I     Intake

W = Width (mm)
150, +50, .., 12000

H = Height (mm)
150, +50, .., 10000

Arranged with Circular duct connection

Halton USD-S
S         Duct diameter (125, 160, 200, 250, 315, 400, 500)

Other options and accessories

MA = Material (only for USS)
CS      Steel
AS      Stainless steel (AISI 316)
AL       Aluminium
CU      Copper

FI   = Finishing (only for USS)
PN       Painted
NA       No finishing
AN       Anodised
AM       Anodised aluminium (spec.color)

CO = Colour
G         Grey (RAL 7001)
X         Special colour (RAL xxxx)
N         No painting

ZT = Tailored product
N         No
Y         Yes (ETO)

Code example

USS/I-150-150, MA=CS, FI=PN, CO=G; ZT=N
USD-200, CO=G, ZT=N