00132669_0

RFD-Q-D


00134479_0

Circular diffuser face


00128770_0

With discharge nozzle


00128765_0

Without discharge nozzle


00144729_0

Horizontal swirling air discharge


00132669_0
00134479_0
00128770_0
00128765_0
00144729_0
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Type RFD

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

Circular and square ceiling swirl diffusers

  • Nominal sizes 5, 6, 8, 10, 12, 16 in
  • Volume flow rate range 8.2 - 770 cfm
  • Diffuser face made of galvanised sheet steel, powder-coated, or of aluminium (depending on variant)
  • For supply and extract air
  • For variable and constant volume flows
  • For all types of ceiling systems
  • With discharge nozzle ideal for cooling in case of 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 3 ft (center line to center line)
  • Ideal for comfort zones


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colors
  • Horizontal or vertical duct connection
  • Plenum box with cord-operated damper blade and pressure tap
  • Shallow plenum box

v2.4.11.2
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Construction style
R
Q
Construction
D
Connection
K
US
A
UO
UD
N
Damper blade for volume flow rate balancing
M
MN
Accessories
L
Size
125
160
200
250
315
400
Exposed surface
P1
Select state colour
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Specification text: RFD-Q-D-A-M-L/315
Updating specification text

Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones and industrial 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 with radially arranged fixed air control blades and either a spigot only or a plenum box with 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
- Low sound power level, ideal for comfort zones
- Fixed blades
- For all types of ceiling systems
- 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
- Q: Diffuser face made of aluminium
- R: Diffuser face made of galvanised sheet steel
- Plenum box, duct collar and cross bar made of galvanised sheet steel
- Transition piece made of aluminium
- Lip seal made of rubber
- Diffuser face powder-coated RAL 9010, pure white
- P1: Powder-coated, RAL CLASSIC colour

VARIANTS
Construction style: Square
Construction: with Nozzle
Connection: Horizontal, with plenum box
Damper blade for volume flow rate balancing: with
Accessories: with lip seal
Size: 315
Exposed surface: Standard finish powder-coated to RAL 9010 (GE 50%)
Select state colour:

PRODUCT DATA:
Strategy: Single row diffuser arrangement
Volume flow qv 541 m³/h
Distance a 1,3 m
Distance x 0,6 m
Distance h1 1,2 m
Supply air to room air temperature difference ΔtSUP,c -6 K
Distance (h 1 + x) l 1,8 m
Effective air velocity veff 5,7 m/s
Throw distance ls 5,8 m
Velocity at h 1 vh1 0,27 m/s
Temperature difference at h1 Δth1 -0,45 K
Velocity at l vl 0,53 m/s
Temperature difference at l Δtl -0,45 K
Thermal output – cooling Φc -1.086 W

Acoustic results
damper blade position open damper blade position 45° damper blade position closed
Δpt [Pa] 35 56 82
LWA [dB(A)] 38 39 39
63Hz [dB] 36 38 37
125Hz [dB] 43 44 43
250Hz [dB] 40 41 40
500Hz [dB] 35 37 36
1kHz [dB] 31 34 35
2kHz [dB] 25 26 32
4kHz [dB] 17 15 23
8kHz [dB] < 15 < 15 < 15
LWNC [dB] 30 32 33
LWNR [dB] 32 34 35

Manufacture of the planning: TROX GmbH
Series: RFD-Q-D-A-M-L/315

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Application

Application

  • Type RFD 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 –21.6 to 18°F
  • For room heights up to 13 ft (lower edge of suspended ceiling)
  • For all types of ceiling systems
  • With an extended border and discharge nozzle also suitable for freely suspended installation (supply air variant)

Special characteristics

  • Low sound power level, ideal for comfort zones
  • Fixed blades
  • For all types of ceiling systems
  • 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 (center line to center line)

Nominal sizes

  • 5, 6, 8, 10, 12, 16

Description

Variants

  • RFD-Q: Square diffuser face
  • RFD-R: Circular diffuser face
  • RFD-*-D: Diffuser face with discharge nozzle


Connection

  • K: Vertical duct connection, with duct collar
  • US: Vertical duct connection, with transition piece
  • A: Horizontal duct connection, with plenum box


Only RFD-R

  • UO: Vertical duct connection, with transition piece and cross bar


Only RFD-R-D

  • UD: Vertical duct connection, with transition piece, cross bar and discharge nozzle
  • N: Horizontal duct connection, with shallow plenum box to be installed above open cell ceilings

Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with radially arranged fixed air control blades

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

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

Materials and surfaces

  • Q: Diffuser face made of aluminum
  • R: Diffuser face made of galvanized sheet steel
  • Plenum box, duct collar and cross bar made of galvanized sheet steel
  • Transition piece made of aluminum
  • Lip seal made of rubber
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC color

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

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product information

certificates

operation manuals

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