Krantz Components

The StarRadial · mixing ventilationseen from below

RA-N

Radial swirl diffuser, circular or square face

RA-N Radial swirl diffuser, circular or square face by Krantz

blue = cool supply air orange = warm air

Move through the air · click or hold for a swirl burstDrag the diffuser to rotate · tap beside it for a swirl burst

Twelve star-shaped vanes, flush with the face. The Coanda effect lays the air horizontally along the ceiling. (DS 4012 E p. 2–3)

RA-N Radial swirl diffuser, circular or square face by Krantz
Pia, Peek's digital host, with the RA-N
Pia with the RA-N
RA-NRadial mixing · ceiling
Discharge height
2.2 – 4.5 mp. 12
Max. ΔT cooling
−12 Kp. 3
Source · DS 4012 EKrantz, Radial outlet RA-N, DS 4012 E 02.2016

Stylised view, not a measurement

Technical data ↓

Air principle

From outlet to occupied zone.

At the outlet

Twelve radial vanes sit flush with the face. They give the air turbulence and strong induction. (DS 4012 E p. 2–3)

In the room

Horizontal radial jets that cling to the ceiling and mix quickly with the room air. (DS 4012 E p. 3)

Construction

A short spigot with a shaped face, circular or square, and built-in radial vanes. One central fixing screw with cap. Above it, a reducer or a flat plenum box. (DS 4012 E p. 2, p. 5)

Smoke test

Airflow in the Krantz lab.

A real smoke test in the Krantz flow laboratory: this is how air leaves the RA-N.

RA-NVideo: Krantz Komponenten · Real smoke test in the laboratory

Technical data RA-N

Discharge height
2.2 – 4.5 mp. 12
Max. ΔT cooling
−12 Kp. 3
Volume flow
40 – 2 000 m³/hp. 9

Krantz Components, Radial outlet RA-N, DS 4012 E 02.2016.

Page numbers are PDF pages of the data sheet.

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Air

Specifications of the RA-N with the source of each value · Air
PropertyValue · Source
Air distribution mixing ventilation, horizontal radial (Coanda effect) DS 4012 E p. 3
Volume flow 40 – 2 000 m³/h across DN 100 – DN 500 p. 9 (features p. 12: 40 – 2,000 m³/h)
Max. ΔT cooling −12 K p. 3
Max. ΔT heating +5 K; +10 K up to 3 m ceiling height p. 12
Discharge height 2.2 – 4.5 m p. 12
Example DN 315, connection D, 500 m³/h: 35 dB(A), 27 Pa p. 3
Penetration depth not given as a figure

Design

Specifications of the RA-N with the source of each value · Design
PropertyValue · Source
Sizes DN 100 · 125 · 160 · 180 · 200 · 224 · 250 · 315 · 355 · 400 · 500 p. 5
Face circular (RS) or square for 600 (Q1) or 625 (Q2) ceiling tiles; square up to DN 400 p. 5, p. 13
Material, outlet galvanised sheet steel, powder-coated RAL 9010 or RAL of choice p. 12
Material, box / reducer plenum box galvanised sheet steel; reducer aluminium p. 5, p. 13
Connections A (reducer with L-hangers) · D · E (flat plenum box with side spigot) p. 2
Options volume flow damper; acoustic lining of the box; perforated cover; also as extract outlet p. 13

Versions and sizes

Eleven sizes, circular or square.

  • DN 100
  • DN 125
  • DN 160
  • DN 180
  • DN 200
  • DN 224
  • DN 250
  • DN 315
  • DN 355
  • DN 400
  • DN 500

DS 4012 E p. 5

Finish

powder-coated RAL 9010 or a RAL colour of choice (p. 12)

In the ceiling

in a closed suspended ceiling, above an open grid ceiling, or exposed (DS 4012 E p. 2–3).

Applications

Where it belongs.

Commercial rooms. The data sheet shows it in a boutique (DS 4012 E p. 11), a reception and a casino (p. 12), at a discharge height of 2.2 to 4.5 m (p. 12).

Krantz references in the Netherlands: Casa Rotterdam; Huis van Brabant, ‘s-Hertogenbosch; Van Lanschot Bankiers, ‘s-Hertogenbosch (old Peek site, project list, via knowledge/referenties.md)

When not: If the jet has to switch between cooling and heating, look at the RA-V (2.5 – 13 m, DS 4063 E p. 11). Above 4.5 m the RA-V2 fits (2.8 – 15 m, DS 4122 E p. 2).

Related in the collection

Same family, a different character.

TypeWhat it isEssenceSource
RA-N3Radial swirl diffuser with 24 vanesone size covers a wide flow range with an insert collar; 2.4 – 4.5 mDS 4131e p. 2–3, p. 11
DD-NTwist outlet for ceiling installationcurved outlet, horizontal radial jets; 2.2 – 4.5 mDS 1175 E p. 3–4
RLRadial slot outlet RL-Q2 / RL-R2blades in radial slots; flush or free-hanging; 2.5 – 4.5 mDS 4186 E p. 2–3

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