Type TDF-SilentAIR

With very low sound power level for comfort zones, with fixed air control blades

Circular and square ceiling swirl diffusers

  • Nominal sizes 12, 16, 20, 24 (in)
  • Nominal sizes 300, 400, 500, 600 (mm)
  • Volume flow rate range 6 to 604 cfm (10 – 1026 m³/h)
  • Diffuser face made of galvanized 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 colors
  • High-performance (HP) for horizontal or vertical duct connection
  • Low-profile (LP) for vertical duct connection
  • Plenum box with cord-operated damper blade and pressure tap

TDF-SA-Q-Z 00133169_0
  • Application
  • Description

Application

  • Type TDF-SilentAIR 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 to +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 characteristics

  • Very low sound power level, ideal for comfort zones
  • Fixed blades
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Horizontal or vertical duct connection

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

  • H: Horizontal duct connection
  • V: Vertical duct connection
  • X: Flexible plenum box FLEXTRO

Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with fixed air control blades
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)

Attachments

  • M: Damper blade for volume flow rate balancing
  • MN: Pressure tap and cord-operated damper blade for volume flow rate balancing with the diffuser face in place

Accessories

  • Lip seal

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal (if accessory lip seal has been ordered)

Materials and surfaces

  • Grille face made of galvanised sheet steel
  • V, H: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Lip seal made of rubber
  • 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

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

Technical information

  • Function
  • Technology
  • Quick sizing
  • Specification text
  • Order code
Schematic illustration of the TDF-SA, with plenum box for horizontal duct connection 00109209_0.

A TDF-SA-Q
B TDF-SA-R
① Diffuser face
② Central fixing screw
③ Plenum box
④ Cross bar
⑤ Suspension hole
⑥ Spigot
Optional
⑦ Lip seal
⑧ Damper blade for volume flow rate balancing
⑨ Pressure tap
⑩ Green cord for closing the damper blade
⑪ White cord for opening the damper blade
⑫ Measuring tube
⑬ Text label indicating plenum box variant

Functional description

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 may range from –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 K 10 – 42 l/s or 36 – 151 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)80 – 285 l/s or 288 – 1026 m³/h
Supply air to room air temperature difference–12 to +10 K


Quick sizing – sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45°90°
Nominal size V ΔptLWAΔptLWAΔptLWA
Nominal size l/s m³/h PadB(A)PadB(A)PadB(A)
300 10 36 1<151<152<15
300 35 126 142716262926
300 60 216 404046398641
300 80 288 7150834915353
400 18 65 1<151<153<15
400 65 234 132417223424
400 115 414 4039523910741
400 160 576 76501015120652
500 27 97 1<152<155<15
500 80 288 122316224726
500 135 486 3437453713443
500 195 702 7150955128056
600, 625 42 151 2<152<155<15
600, 625 115 414 122316223926
600, 625 185 666 3238413610141
600, 625 260 936 6250824920052


Quick sizing – sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45°90°
Nominal size V ΔptLWAΔptLWAΔptLWA
Nominal size l/s m³/h PadB(A)PadB(A)PadB(A)
300 10 36 1<151<152<15
300 40 144 172920283828
300 70 252 5345634511845
300 80 288 7050825115451
400 18 65 1<151<153<15
400 65 234 122315223524
400 115 414 3938453811041
400 160 576 7650885021251
500 27 97 1<152<155<15
500 90 324 152322245828
500 155 558 4539654017145
500 201 724 75501085028755
600, 625 42 151 2<152<155<15
600, 625 130 468 162621255030
600, 625 215 774 4341564013746
600, 625 265 954 6550864820853


Quick sizing – sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45°90°
Nominal size V ΔptLWAΔptLWAΔptLWA
Nominal size l/s m³/h PadB(A)PadB(A)PadB(A)
300 10 36 1<151<152<15
300 35 126 142616252925
300 60 216 404046398540
300 80 288 7150835015351
400 18 65 1<151<153<15
400 65 234 122316253524
400 115 414 3939504011042
400 155 558 7150915120053
500 27 97 1<152<155<15
500 80 288 122316254628
500 130 468 3137423912144
500 180 648 5950815323255
600, 625 42 151 2<152<155<15
600, 625 115 414 132619284232
600, 625 185 666 3541484410848
600, 625 230 828 5449745216657


Quick sizing – sound power level and total differential pressure

Nominal sizeVDamper blade position
Nominal sizeV45°90°
Nominal sizeVΔptLWAΔptLWAΔptLWA
Nominal sizel/sm³/hPadB(A)PadB(A)PadB(A)
600, 625 42 151 2<153<155<15
600, 625 125 450 182528264730
600, 625 205 738 4939754112845
600, 625 285 1026 95501445324756


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 into all types of suspended ceilings.

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 lugs.

The diffuser face is fixed to the cross bar with a central screw.

Spigot suitable for ducts to EN 1506 or EN 13180.

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

Special characteristics

  • Very low sound power level, ideal for comfort zones
  • Fixed blades
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Horizontal or vertical duct connection

Materials and surfaces

  • Grille face made of galvanised sheet steel
  • V, H: Plenum box and cross bar made of galvanised sheet steel
  • X: Plenum box made of plastic and galvanised sheet steel
  • Lip seal made of rubber
  • 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, with LWA ≅ 50 dB(A): 80 – 285 l/s or 288 – 1026 m³/h
  • Supply air to room air temperature difference: –12 to +10 K

00126182_0.

 Type
TDF-SA       Swirl diffuser

 Construction style
R       Circular
Q       Square

 System
Z       Supply air
A       Extract air

 Connection
H       Horizontal
V       Vertical

 

 Damper blade for volume flow rate balancing
       No entry: without damper blade
M       With damper blade
MN       With cords and pressure tap (only for connection type H)

 Accessories
       No entry: without accessories
L       With lip seal

 Nominal size [mm]
300
400
500
600
625

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

 

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Contact

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Visual contact Visual contact

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265