Application
Special characteristics
Nominal sizes
Variants
Construction
Parts and characteristics
Construction features
Materials and surfaces
Mineral wool
Standards and guidelines
Maintenance
Functional description
External weather louvres are externally mounted air transfer devices for the fresh air and exhaust air of air conditioning systems. They are installed in external walls and façades. Their narrowly arranged blades give good protection against the direct ingress of rain as well as against leaves and birds.
Under certain unfavourable conditions, such as heavy rain, and depending on the airflow velocity it might happen that slight quantities of water enter together with the air.
This is why the airflow velocity in fresh air openings should not exceed 2 – 2.5 m/s.
NL
Variant
Parts and characteristics
Construction features
Materials and surfaces
Mineral wool
NL-H
Variant
Parts and characteristics
Construction features
Materials and surfaces
Mineral wool
NL-D
Variant
Parts and characteristics
Construction features
Materials and surfaces
Materials
Casing and blades | S | Galvanised sheet steel | |
A | Aluminium | ||
Perforated sheet metal to retain absorption material | – | Galvanised sheet steel | Only NL, NL-H |
Bird mesh | – | Galvanised steel | Only NL, NL-H |
Absorption material | – | Mineral wool | Only NL, NL-H |
Surfaces
Casing and blades | – | Untreated | |
P1-RAL ... | Powder-coated, RAL colour ... CLASSIC |
Installation and commissioning
Installation information
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +61 (02) 8923 2551
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +61 (02) 8923 2551