00133166_0

FD-Q


00134467_0

Circular diffuser face


00147178_0

Horizontal swirling air discharge


00132627_0

Plenum box with damper blade and square diffuser face


00133166_0
00134467_0
00147178_0
00132627_0
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Type FD

For comfort zones, with fixed air control blades

Circular and square ceiling swirl diffusers that create high induction levels, for high room air change rates

  • Nominal sizes 300, 400, 500, 600, 625
  • Volume flow rate range 9 – 235 l/s or 31 – 846 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
  • Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)
  • Ideal for comfort zones


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Plenum box with cord-operated damper blade and pressure tap

v2.5.1.2
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Construction style
R
Q
System
Z
A
Connection
H
V
Damper blade for volume flow rate balancing
M
MN
Accessories
L
Nominal size
300
400
500
600
625
Exposed surface
P1
Select state colour
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Specification text: FD-Q-Z-H-M-L/600
Updating 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 into all types of suspended ceilings. Ready-to-install component which consists of the casing, diffuser face, spigot, and a cross bar to which the diffuser face is fixed. 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
- High induction results in a rapid reduction of temperature differences and airflow velocities
- For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
- Horizontal or vertical duct connection
- Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)

MATERIALS AND SURFACES
- Diffuser face made of galvanised sheet steel
- V, H: Plenum box and cross bar made of galvanised sheet steel
- Lip seal made of rubber
- Diffuser face powder-coated RAL 9010, pure white
- P1: Coated, RAL CLASSIC colour

VARIANTS
Construction style: Square
System: Supply air
Connection: Horizontal
Damper blade for volume flow rate balancing: With damper blade
Accessories: With lip seal
Nominal size: 600
Exposed surface: Standard finish powder-coated to RAL 9010 (GE 50%)
Select state colour:

PRODUCT DATA:
Strategy: Single row diffuser arrangement
Volume flow qv 508 m³/h
Distance a 2,4 m
Distance x 1,2 m
Distance h1 1,2 m
Supply air to room air temperature difference ΔtSUP,c -6 K
Distance (h 1 + x) l 2,4 m
Effective air velocity veff 4,8 m/s
Throw distance ls 5,0 m
Velocity at h 1 vh1 0,18 m/s
Temperature difference at h1 Δth1 -0,45 K
Velocity at l vl 0,28 m/s
Temperature difference at l Δtl -0,45 K
Thermal output – cooling Φc -1.020 W

Acoustic results
damper blade position open damper blade position 45° damper blade position closed
Δpt [Pa] 22 32 63
LWA [dB(A)] 36 37 37
63Hz [dB] 36 38 36
125Hz [dB] 39 41 40
250Hz [dB] 38 40 40
500Hz [dB] 36 36 35
1kHz [dB] 26 30 30
2kHz [dB] < 15 19 23
4kHz [dB] < 15 < 15 16
8kHz [dB] < 15 < 15 < 15
LWNC [dB] 31 31 29
LWNR [dB] 32 32 31

Manufacture of the planning: TROX GmbH
Series: FD-Q-Z-H-M-L/600

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Application

Application

  • Type FD 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

  • 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
  • Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 0.9 m (centre line to centre line)

Nominal sizes

  • 300, 400, 500, 600, 625

Description

Variants

  • FD-Q: Square diffuser face
  • FD-R: Circular diffuser face
  • FD-*-Z: Supply air
  • FD-*-A: Extract air


Connection

  • H: Horizontal duct connection
  • V: Vertical duct connection

Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with radially arranged fixed air control blades
  • Plenum box for supply air, with an optimised equalising element that ensures a uniform airflow through the diffuser face
  • 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

  • Diffuser 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

Downloads

product information

certificates

operation manuals

References

Wittlinger Therapiezentrum

  • Description
Project: Wittlinger Therapiezentrum 
Application: Hospital
Location: Walchsee, Austria
Building type: building extension
Year of completion: 10.2014
 
Construction company: Wittlinger Therapiezentrum GmbH
Architect: Architekten Moritz u. Haselsberger
Designer: Tivoliplan
 
Total air volume: 4.500 m3/h
 
 
 
TROX-Products

  • Air diffusers: air grilles TRS-R, swirl diffusers FD
  • Control units: volume flow controller TVJ-Easy, VFL, RN
  • Filter units: particulate filter air terminal devices F646V1D
  • Central air handling units: X-CUBE 2010
 

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