Natural Air Ventilators
Louvre ventilator
Standard, drainable
or storm louvre
Damper options
Single blade
aluminium, insulated,
acoustic or plastic
blade damper
options.
Controlled ventilation
Fresh air intake or
extract
Passive night cooling
Link to BMS
Fit to structure or
window systems
Insulated damper
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Naco
Natural Air Ventilators
Metal louvre / damper combination
Acoustic damper - NAV WA
Insulated damper - NAV WI
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50, 75, 100 or SLH-S series louvre with integral insulated damper
incorporating blade and side seals
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Materials
Louvre and damper frame extruded aluminium grade ENAW 6063T6 to BSEN 755.
Frame construction
Screw joints as standard.
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Specification
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Catalogue |
Finishes
Extruded aluminium (mill finish).
Polyester powder coated to BS 6496.
Anodised to BS3987.
Bird wire guard
Fitted as standard, 18g
expanded aluminium.
Insect screen
If specified, 23g expanded aluminium.
Free area
The face core area provides approximately 47% free area.
Grilles
Internal grilles from our Air Diffusion brand are available where required.
Actuators
Dampers are fitted with:
a) 24V AC 10 Nm actuator with modulating action or simply drive open and and drive close.
b) 24V AC/DC 7 Nm failsafe spring open or close actuator with modulating action or simply spring open and drive close (or vice-versa).
Insulated dampers
The dampers are available with either an acoustic or a thermal insulation material.
The acoustic panel provides 32 decibel sound reduction and the insulated panel provides 1.15W/m2 K thermal value.
Sizes
Single damper maximum 1400 mm W x 2400 mm H
Double damper maximum 2800 mm W x 1500 mm H
For more information including dimensional
and installation data please view
the 6 page Natural Air Ventilators Catalogue
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