Type ADD

For the creative design of ceilings in comfort zones, with fixed air control blades

Circular and square ceiling swirl diffusers

  • Nominal sizes 250, 300, 400, 450, 500, 600, 625
  • Volume flow rate range 20 – 465 l/s or 72 – 1674 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
  • Swirl unit inside for the best swirl effect and high induction levels
  • 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

ADD–Q 00133173_0
  • Application
  • Description

Application

  • Type ADD 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

Special characteristics

  • For the creative design of ceilings in comfort zones
  • Diffuser faces in many different designs
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Horizontal or vertical duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Variants

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


Connection

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

Parts and characteristics

  • Circular or square design diffuser face
  • Swirl unit and discharge nozzle for ideal horizontal supply air discharge
  • Plenum box with suspension holes and 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

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, swirl unit, plenum box and cross bar made of galvanised sheet steel
  • Discharge nozzle made of aluminium
  • Lip seal made of rubber
  • Swirl unit and discharge nozzle dip coated RAL 9005, jet black
  • 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 ADD, with plenum box for horizontal duct connection 00109762_0.

A ADD-R
B ADD-Q
① Diffuser face
② Central fixing screw
③ Swirl unit (for supply air only)
④ Plenum box
⑤ Cross bar
⑥ Suspension hole
⑦ Spigot
Optional
⑧ Lip seal
⑨ Damper blade for volume flow rate balancing
⑩ Pressure tap
⑪ Green cord for closing the damper blade
⑫ White cord for opening the damper blade
⑬ Measuring tube
⑭ 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.

Design ceiling swirl diffusers are characterised by a diffuser face plate with a particular pattern. The swirl unit required for the swirling air discharge is situated inside the plenum box and hence not visible from the room.

Type ADD ceiling swirl diffusers have fixed blades. Air discharge is horizontal omni directional. 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 ADD diffusers may also be used for extract air.

Nominal sizes250, 300, 400, 450, 500, 600, 625 mm
Minimum volume flow rate, with ΔtZ = –6 K 20 – 200 l/s or 72 – 720 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)70 – 465 l/s or 256 – 1674 m³/h
Supply air to room air temperature difference–12 to +10 K


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)
250 20 72 7169171917
250 35 126 212929315831
250 50 180 4338584111941
250 70 256 87501185224053
300 30 108 5<158<151615
300 60 216 222932316433
300 90 324 4940724414446
300 120 432 88501275325556
400 55 198 7169161920
400 100 360 233131326437
400 145 522 4942664413449
400 185 666 80501075421958
450 70 252 5<157<151416
450 140 504 212929315735
450 200 720 4240594211546
450 275 990 80501125321860
500 85 306 6<159171922
500 155 558 212931336438
500 225 810 4440654413550
500 300 1080 79501165524062
600 625 200 720 142318243834
600 625 290 1044 293438368044
600 625 380 1368 5043654513853
600 625 465 1674 7550975320661


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)
250 20 72 5<158161517
250 40 144 203131355836
250 60 216 4443704813150
250 75 270 69501095720560
300 30 108 3<155<1513<15
300 60 216 122722315136
300 95 342 3140554512952
300 130 468 58501035624171
400 55 198 4<157161723
400 105 378 142924336241
400 155 558 3241524513456
400 205 738 5550915523570
450 70 252 3<154<151117
450 145 522 112819314837
450 220 792 2640434511051
450 295 1062 4750785619863
500 85 306 4<155<151723
500 155 558 122918335642
500 225 810 2641384511855
500 295 1062 4550665420372
600 625 200 720 92714303435
600 625 280 1008 173627406645
600 625 355 1278 2843434710653
600 625 435 1566 4150655415961


Design ceiling swirl diffusers with square or circular diffuser face, for comfort zones with particularly demanding requirements of aesthetics and design. For supply air or extract air. Excellent aerodynamic and acoustic function due to swirl unit for horizontal swirling air discharge, creating high levels of induction. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face, swirl unit, plenum box with equalising element, 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

  • For the creative design of ceilings in comfort zones
  • Diffuser faces in many different designs
  • 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

  • Diffuser face, swirl unit, plenum box and cross bar made of galvanised sheet steel
  • Discharge nozzle made of aluminium
  • Lip seal made of rubber
  • Swirl unit and discharge nozzle dip coated RAL 9005, jet black
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 250, 300, 400, 450, 500, 600, 625 mm
  • Minimum volume flow rate, with ΔtZ = –6 K: 20 – 200 l/s or 72 – 720 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 70 – 465 l/s or 256 – 1674 m³/h
  • Supply air to room air temperature difference: –12 to +10 K

00133919_0

 Type
ADD       Swirl unit

 Construction style
R       Circular (not with nominal size 625)
Q       Square

 Connection
ZH       Horizontal, supply air
ZV       Vertical, supply air
AH       Horizontal, extract air
AV       Vertical, extract air

 Damper blade for volume flow rate balancing
No entry: none
M       With
       Only for connections ZH and AH
MN       With cords and pressure tap

 

 Accessories
No entry: none
L       With lip seal

 Nominal size [mm]
250
300
400
450
500
600
625        (nur ADD-Q)

 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

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
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