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Circular diffuser faces with circular plenum box

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Square diffuser face with square plenum box

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Twist-shaped, horizontal Air duct

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Round diffuser face

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TDF-SILENTAIR 

WITH VERY LOW SOUND POWER LEVEL FOR COMFORT ZONES, WITH FIXED AIR CONTROL BLADES


Circular and square ceiling swirl diffusers

  • Nominal sizes 300, 400, 500, 600, 625

  • Volume flow rate range 10 – 265 l/s or 36 – 954 m³/h

  • Diffuser face made of galvanised sheet steel, powder-coated

  • For supply and extract air

  • For variable and constant volume flows

  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation

  • High induction results in a rapid reduction of the temperature difference and airflow velocity

  • Ideal for comfort zones


Optional equipment and accessories

  • Exposed diffuser face available in RAL Classic colours

  • Horizontal or vertical duct connection

  • Plenum box with cord-operated damper blade and pressure tap

 


 


 

General information

Application

  • Ceiling swirl diffusers are used as supply air or extract air diffusers for comfort zones

  • Attractive design element for building owners and architects with demanding aesthetic requirements

  • Horizontal swirling supply air discharge for mixed flow ventilation

  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)

  • For variable and constant volume flows

  • For supply air to room air temperature differences from -12 – +10 K

  • For room heights up to 4 m (lower edge of suspended ceiling)

  • For all types of ceiling systems

  • With an extended border also suitable for freely suspended installation (supply air variant)



Special features

  • High induction results in a rapid reduction of the supply air to room air temperature difference and airflow velocity

  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation

  • Horizontal or vertical duct connection

  • Very high room air change rate possible thanks to row arrangement with a minimum pitch distance of 0.9 m



Nominal sizes

  • 300, 400, 500, 600, 625



Variants

  • TDF-SA-Q: Square diffuser face

  • TDF-SA-R: Circular diffuser face

  • TDF-SA-*-Z: Supply air

  • TDF-SA-*-A: Extract air


Connection

  • Q-*-H: Square plenum box with horizontal duct connection

  • R-*-H: Circular plenum box with horizontal duct connection

  • V: Vertical duct connection


Accessories

Lip seal

  • For circular plenum boxes with horizontal connection spigot, the lip seal is only available in combination with the flow adjustment damper. Otherwise, it can always be selected optionally.



Attachments

  • M: Damper element for volume flow rate balancing

  • MN: Pressure tap and cord-operated damper unit for volume flow rate balancing with the diffuser face in place (only possible with square plenum box)



Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180

  • Spigot with groove for lip seal (only applies to galvanised spigots and lip seal accessories)



Materials and surfaces

  • Grille face made of galvanised sheet steel

  • Q; R: Plenum box made of galvanised sheet steel including galvanised sheet steel cross bar to support the diffuser face

  • Plenum boxes with vertical connection and square plenum boxes with horizontal connection: for supply air always with galvanised perforated plate for air distribution

  • Circular plenum boxes with horizontal spigot: Equipped as a plenum box for supply air with an equalising element made of polyester

  • Square plenum boxes and plenum boxes with vertical spigot: Spigot made of galvanised sheet steel

  • Circular plenum boxes with horizontal spigot: Spigot made of black ABS, according to UL94, V0 flame retardant

  • Lip seal made of Evoprene

  • Diffuser face powder-coated, RAL 9010, pure white

  • P1: Powder-coated, RAL Classic colour


Standards and guidelines

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



Maintenance

  • Low maintenance as construction and materials are not subject to wear

  • Inspection and cleaning to VDI 6022


Technické údaje

  • Function
  • TECHNICAL DATA
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of TDF-SA with square plenum box
① Diffuser face
② Central fixing screw
③ Plenum box
④ Cross bar
⑤ Suspension hole
⑥ Spigot
⑦ Lip seal (optional)
⑧ Damper blade for volume flow rate balancing (optional)
⑨ Pressure tap (optional)
⑩ Green cord for closing the damper unit (optional)
⑪ White cord for opening the damper unit (optional)
⑫ Measuring tube (optional)
⑬ Text label indicating plenum box variant (optional)

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type TDF ceiling swirl diffusers have fixed blades. Air discharge is horizontal radial. The supply air to room air temperature difference can be -12 to +10 K. A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place. To give rooms an aesthetic, uniform look, type TDF diffusers may also be used for extract air.

 


Nominal sizes300, 400, 500, 600, 625 mm
Minimum volume flow rate, with Δtz = -6 K10 – 42 l/s or 36 – 151 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)80 – 265 l/s from 288 – 954 m³/h
Supply air to room air temperature difference-12 – 10 K

Specification text

Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones. Diffuser face with fixed air control blades for horizontal swirling supply air discharge creating high induction levels. For installation in suspended ceilings of all kinds. Ready-to-install component which consists of the diffuser face and a plenum box, side entry or top entry spigot, and suspension holes or suspension brackets.




Special features

  • High induction results in a rapid reduction of the supply air to room air temperature difference and airflow velocity


  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation

  • Horizontal or vertical duct connection

  • Very high room air change rate possible thanks to row arrangement with a minimum pitch distance of 0.9 m



Materials and surfaces

  • Grille face made of galvanised sheet steel

  • Q; R: Plenum box made of galvanised sheet steel including galvanised sheet steel cross bar to support the diffuser face

  • Plenum boxes with vertical connection and square plenum boxes with horizontal connection: for supply air always with galvanised perforated plate for air distribution

  • Circular plenum boxes with horizontal spigot: Equipped as a plenum box for supply air with an equalising element made of polyester

  • Square plenum boxes and plenum boxes with vertical spigot: Spigot made of galvanised sheet steel

  • Circular plenum boxes with horizontal spigot: Spigot made of black ABS, according to UL94, V0 flame retardant

  • Lip seal made of Evoprene

  • Diffuser face powder-coated, RAL 9010, pure white

  • P1: Powder-coated, RAL Classic colour


Technical data

  • Nominal sizes: 300, 400, 500, 600, 625 mm

  • Minimum volume flow rate, with Δtz = -6 K: 10 – 42 l/s or 36 – 151 m³/h

  • Maximum volume flow rate, at LWA ≅ 50 dB(A): 80 – 265 l/s or 288 – 954 m³/h

  • Supply air to room air temperature difference: -12 to +10 K


TDF-SA–Q–Z–H–M–L/500/P1 - RAL …
||||||||
12345678
1 Type
TDF-SA Swirl diffuser
 
2 Construction style
Determines the variant of the plenum box
R circular
Q square
 
3 System
Z supply air
A extract air
 
4 Connection
H horizontal
V vertical
 
5 Damper blade for volume flow rate balancing
No entry required: without damper unit
M with damper unit
MN with cords and pressure tap (only with square plenum box)
 
6 Accessories
No entry required: without accessories
L With lip seal
 
7 Nominal size [mm]
300, 400, 500, 600, 625
 
8 Exposed surface
No entry required: powder-coated RAL 9010, pure white
P1 powder-coated, specify RAL CLASSIC colour
 
Gloss level
RAL 9010 GU50
RAL 9006 GU30
All other RAL colours GU70
 
Note: Circular plenum boxes with a horizontal spigot are only available without damper unit for volume flow rate balancing and lip seal or with damper unit for volume flow rate balancing and lip seal.Order example: TDF-SA–Q–Z–V–M–L/500/P1-RAL 9016
StyleSquare
Air conditioning systemSupply air
Connection onVertical
Damper unit for volume flow rate balancingWith
AccessoriesLip seal
Nominal size500
Exposed surfaceRAL 9016, traffic white, gloss level GU70

Stažení

informace o produktu

  • Product data sheet Type TDF-SilentAir

    TDF-SilentAIR_PD_2025_07_01_DE_en Product data sheet 1,2 MB pdf

  • Série TDF-SilentAIR

    1,1 MB pdf

certifikáty

  • Declaration of hygiene conformity Type TDF-SilentAIR

    TDF-SilentAir_HC_2024_05_DE_en Hygiene certificate 1,7 MB pdf

  • Environmental Product Declaration TDF

    TDF_EPD_2024_11_DE_en Environmental Product Declaration 1 MB pdf

návody k obsluze

  • Installation manual Ceiling diffusers

    A00000054447 Installation manual 520 KB pdf

  • Installation manual Air terminal devices

    IM_2018_06_A00000054447 Installation manual 1,2 MB pdf

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