TDF-SilentAIR

Technical information

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 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 – 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 Δt_z = -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

–

500

P1 - RAL …

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

Style	Square
Air conditioning system	Supply air
Connection on	Vertical
Damper unit for volume flow rate balancing	With
Accessories	Lip seal
Nominal size	500
Exposed surface	RAL 9016, traffic white, gloss level GU70

Downloads

product information

certificates

Environmental Product Declaration TDF

TDF_EPD_2024_11_DE_en Environmental Product Declaration 1 MB pdf

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