GDD - Grille

Grille for circular duct installation

Easy to install and aesthetic in design. It is ideal for tight installation space.

  • Horizontal supply, for circular duct installations
  • For cooling and heating applications; suitable also for exhaust
  • Adjustable vertical front vanes, adjustable horizontal rear vanes
  • Steel construction
  • Visible screw fastening

Product models and Accessories

  • Model with wax-bulb actuator for directing the supply air jet in heating operation
  • Opposite blade damper for airflow control

The grille is made of steel polyester-painted with grey (RAL 7004) standard colour.
The grille has adjustable horisontal rear and vertical front vanes.

The frame comprises a sealing gasket.
The grille is fastened directly to the circular duct with visible screws.
The grille can be installed with an airflow adjustment damper.

The grille has removable for cleaning purposes and to provide access to the circular duct.

Optionally

The supply air jet is controlled according to supply air temperature by a wax-bulb actuator.

Halton GDD

Supply grille for circular duct installations

  • Horizontal supply, for circular duct installations
  • For cooling and heating applications; suitable also for exhaust
  • Adjustable vertical front vanes, adjustable horizontal rear vanes
  • Steel construction
  • Visible screw fastening

Product Models and Accessories

  • Model with wax-bulb actuator for directing the supply air jet in heating operation
  • Opposite blade damper for airflow control
     

Dimensions


 

L x H L1 L2 H1 H2 Duct size
415 x 72 450 400 107 57 160 to 400
495 x 72 530 480 107 57 160 to 400
575 x 72 610 560 107 57 160 to 400
415 x 115 450 400 150 100 315 to 630
495 x 115 530 480 150 100 315 to 630
575 x 115 610 560 150 100 315 to 630
495 x 155 530 480 190 140 630 to 1500
575 x 155 610 560 190 140 630 to 1500
495 x 195 530 480 230 180 800 to 1800
575 x 195 610 560 230 180 800 to 1800

Total depth with OG - airflow adjustment damper = 52 mm + 45 mm
The free area of the GDD is 62 %.

Material

 Part  Material  Finishing  Note
 Frame  Steel  Polyester-painted
 Grey (RAL 7004 / 50% gloss)
Special colours and
epoxy-painting (100%) available
 Vanes  Steel  Polyester-painted
 Grey (RAL 7004 / 50% gloss)
Special colours and
epoxy-painting (100%) available

Accessories

 Accessory Code  Description
 Airflow adjustment damper OG  Aluminium opposite blade damper
 for flow adjustment
 Wax-bulb actuator MT  The actuator controls the vane angle
 depending on the supply air temperature


Wax-bulb actuator

In applications where both heating and cooling are provided, the air pattern can be changed automatically via a wax-bulb actuator.
The wax-bulb actuator alters the angles of the horizontal rear vane depending on the supply air temperature. Neither auxiliary energy nor a dedicated control system are needed.

When cold air is supplied at a temperature up to 18°C the supply jet is horizontal. The vane angle is 0°. As the supply air temperature rises, the actuator piston progressively changes the angle of the rear vanes in order to direct the supply air jet downwards. The vane angle reaches 45° in 10 to 20 minutes.
No maintenance is required for the wax-bulb actuator.

Function

Supply air is supplied into the space with either horizontal and/or vertical deflection. The supply air mixes with room air in front of the grille.
The supply air is directed horizontally with the adjustable rear vanes.
The length and form of the flow pattern can be adjusted by turning the vertical vanes.

The rear vane angle can also be controlled by an optional wax-bulb actuator.

Installation

The grille is connected directly to the duct. For the size of the installation hole, see Dimensions page (LxH).
The grille is fastened to the duct with visible screws in pre-drilled holes in the frame.

Adjustment

The airflow rate can be adjusted when the grille is installed with the airflow adjustment damper OG.

The airflow is adjusted by turning the damper blades behind the grille with a screwdriver

Servicing

Remove the grille by unscrewing the visible fixing screws.
Clean the parts by wiping them with a damp cloth.
Push the grille back into place and screw in the fixing screws.

Specification

The grille is made of steel polyester-painted with grey (RAL 7004) standard colour.
The grille has adjustable horisontal rear and vertical front vanes.

The frame comprises a sealing gasket.
The grille is fastened directly to the circular duct with visible screws.
The grille can be installed with an airflow adjustment damper.

The grille has removable for cleaning purposes and to provide access to the circular duct.

Optionally

The supply air jet is controlled according to supply air temperature by a wax-bulb actuator.

Order Code

GDD-L-H; CO-AC-ZT

L = Length
     
415, 495, 575

H = Height
       72, 115, 155, 195
 

Other options and accessories

CO = Colour
     
    G      Grey
          W     White
          X       Special colour

AC = Accessories
         MT     Wax-bulb actuator

ZT = Tailored product
         N        No
         Y        Yes
 

Sub products

        OG      Opposed blade damper (GDD)
 

Code example

       GDD-415-72, CO=G, ZT=N  

References stored

References stored

20002272 GDD-415X115 RAL 7004
20002273 GDD-415X72 RAL 7004
20002278 GDD-575X115 RAL 7004

 

Accessories stored

20000630 OD-415X72

Downloads & Media

Halton GDD - nl
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neerlandés (Países Bajos)
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619.3 kB
Halton GDD - ru
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Halton GDD - gb
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inglés (Reino Unido)
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Halton GDD - se
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sueco (Suecia)
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620.0 kB
Halton GDD - fi
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finés (Finlandia)
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619.4 kB
Halton GSD-GDD - fr
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francés (Francia)
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784.8 kB