Type AH

VENTILATION GRILLES, MADE OF ALUMINIUM, WITH FIXED HORIZONTAL BLADES – ALSO FOR HORIZONTAL RUNS

Single ventilation grilles and horizontal run sections with special profiled blades

  • Nominal sizes 300 × 75 – 1800 × 600 mm and horizontal run sections
  • Volume flow rate range 17 – 2500 l/s or 61 – 9000 m³/h
  • Grille face made of aluminium with powder-coat finish
  • Front border, 20 mm or 30 mm wide or plaster-in
  • Straight (0°) or angled (15°) air discharge
  • Concealed screw fixing


Optional equipment and accessories

  • Grille face in RAL CLASSIC colours
  • Installation subframe
  • Attachments for volume flow rate balancing and air direction control
  • Concealed fixing or countersunk holes (only for 30 mm wide front border)

AH-0-A/825×225 00137411_0


  • APPLICATION
  • DESCRIPTION

Application

  • Ventilation grille of Type AH as supply air or extract air variant for comfort zones and industrial zones
  • Directed supply air discharge for mixed flow ventilation
  • Blades for straight (0°) or angled (15°) air discharge to meet different local requirements
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +4 K
  • For installation in walls, sills and rectangular ducts

Special characteristics

  • Fixed blades
  • Front border in two widths and plaster-in option
  • Concealed fixing, or countersunk holes
  • Also for continuous horizontal runs
  • Optional installation subframe

Nominal sizes

Single grille

  • Nominal length: 300 mm up to 1800 mm (50 mm increments)
  • Nominal height: 75 mm up to 600 mm (25mm increments)
  • AHP nominal height: 75 mm up to 200 mm (25 mm increments)
  • Intermediate sizes on request


Horizontal run section

  • Nominal length of end section: 900 mm up to 1799 mm (1 mm increments)
  • Nominal length of middle section: 1800 mm
  • Nominal height: 75 mm up to 300 mm (25 mm increments)
  • AHP nominal height: 75 mm up to 200 mm (25 mm increments)
  • Intermediate sizes upon request


Variants

  • AH: Single grille
  • E, EL, ER, M: Horizontal run section


Front border

  • AH: 30 mm wide
  • AHR: 20 mm wide
  • AHP: Plaster-in border


Fixing

  • Countersunk holes (AH only)
  • X: Without holes (border drilling by customer)
  • S11: Concealed fixings (in combination with installation subframe) 
  •      

Parts and characteristics

  • Rectangular profile border sections
  • Fixed horizontal blades
  • Vertical lateral mullions
  • Factory fitted perimeter seal

Attachments

  • AG, D, DG: For volume flow rate balancing and for air direction control
  • AHP: Dampers installed within plenum box

Accessories

  • Installation subframe: For the fast and simple installation of ventilation grilles

Construction features

  • 20 mm or 30 mm wide border or plaster-in border
  • Blades for straight (0°) or angled (15°) air discharge

Materials and surfaces

  • Border and blades made of aluminium
  • P3: Border and blades powder-coated, RAL9010:20%
  • P6: Powder-coated RAL CLASSIC colour. Gloss level: 25%,

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

Technical information

  • FUNCTION
  • TECHNICAL DATA
  • SPECIFICATION TEXT
  • ORDER CODE
Functional description

Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems.  They direct the supply into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions.  The results is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation.

Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.5m/s, is called throw distance.

The supply air jet from wall grilles that are installed near the ceiling achieves a larger throw distance than a free jet (from a grille that is not installed near the ceiling). Single grilles,groups of grilles and continuous horizontal runs all achieve different throw distances. 

In cooling mode it is necessary to take account of the jet deviation towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases.  In heating mode the supply air jet deviates toward the ceiling.  This has no negative effect on the airflow velocity in the occupied zone, but it may affect the complete ventilation of the room. 

Nominal sizes 300 × 75 to 1800 × 600 mm
Horizontal run section H: 75 mm up to 300 mm
Minimum volume flow rate 17 – 1085 l/s or 61 – 3906 m³/h
Maximum volume flow rate, with LWA max. 40 dB(A) without attachments 75 – 2500 l/s or 270 – 9000 m³/h
Supply air to room air temperature difference –12 to +4 K

Volume flow rates for single grille for supply air.


Ventilation grilles, rectangular, made of aluminium, for supply and extract air. Rectangular profile border. Preferably for wall and sill installation but also suitable for rectangular ducts.
Ready-to-install component which consists of a border and fixed horizontal blades.
Concealed fixing in combination with an installation subframe or countersunk holes for fixing onto an installation surface. 
Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

  • Fixed blades
  • Front border in two widths
  • Concealed or countersunk holes
  • Also for continuous horizontal runs
  • Optional installation subframe

Materials and surfaces

  • Border and blades made of aluminium
  • P3: Border and blades powder-coat RAL9010:20%
  • P6: Powder-coated  RAL CLASSIC colour. Gloss level: 25%

Technical data

  • Nominal sizes: 300 × 75 to 1800 × 600 mm
  • Horizontal run section, height: 75 – 300 mm
  • Minimum volume flow rate (supply air): 17 – 1085 l/s or 61 – 3906 m³/h
  • Maximum volume flow rate (supply air), at LWA max. 40 dB(A) without attachments: 75 – 2500 l/s or 270 – 9000 m³/h
  • Supply air to room air temperature difference: –12 to +4 K

Share page

Recommend this page

Recommend this page by sending a link by mail.

Fields marked with an (*) are required fields.

Share page

Thank you for your recommendation!

Your recommendation has been sent and should arrive shortly.

Contact

We are here for you

Visual contact Visual contact

Please specify your message and type of request.
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

Visual contact Visual contact

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.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051

Contact

We are here for you

Visual contact Visual contact

Please specify your message and type of request.
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051

Attachment (max. 10MB)

Fields marked with an (*) are required fields.

Contact

Thank you for your message!

Visual contact Visual contact

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.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051