Coltlite CLT glass louvred ventilator

Frames:

Thermally broken, 47 mm deep. Glazing seals comprise double weather strips with a nylon lip between. The horizontal glass edges of the louvres are enclosed with aluminium sections which have two overlapping weather seals for excellent airtightness.

Blade pitch:

• 155–355 mm (depending on overall size of complete unit) with central pivot point.

• Blade frame to be a maximum of 49 mm between glass surfaces.

• Visible width of horizontal louvre frame 32 mm when looking from the outside.

Fixing:

Fixing can be to curtain walling using 24–44 mm thermally broken glazing frame adaptor, or to structural opening using either through frame or strap fixings.

Controls:

• Frame mounted and painted motor (hidden behind side frame profile) positioned at top or bottom on either side of frame and with a typical operation time of 32 s.

• Optional device to reduce force of closing louvres, to reduce the risk of finger squeezing (electric versions only).

• If used as a smoke ventilator, activation is either by local thermal fuse which opens the unit at a pre-selected temperature (pneumatic version only), or by responding to an external release signal.

Its performance varies with size and options selected (tests to BS EN 12101-2 and BS EN 14351-1):

• Aerodynamic coefficient: Up to 0.58.

• Reliability: RE 1000 (10,000 cycles).

• Wind load: up to 3000 N/m².

• Snow load: SL 0.

• Resistance to heat: B300.

• Low ambient temperature operation: T(00) / T(-15).

• Materials resistance to fire: E (to BS EN 13501-1).

• U value: up to 1.46 W/m²K.

• Air permeability: Class 3 to BS EN 12207 – 1.89 m³/hr/m² or 0.37 m³/hr/m at 50 Pa.

• Watertightness: Class 4A to BS EN 12208 – Watertight at static pressure of up to and including 150 Pa.

• Sound insulation: 41 dB R’w.