www.ostberg.com

RK/RKBRectangular duct fans

Östberg (Kunshan) Ventilation CO.,LTD certifies that RK series for model RK 400x200 C1 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.

Catalog RK 400*200 C1 Rev.1

1

Edited/June 2015

3

As a follow-on from the in-line circular duct fan, Hans Östberg invented in the middle

of the 70’s the rectangular in-line duct fan, using an in external rotor motor but having

a straight-through airflow (registered design no. 32838).

Thanks to the 90o angle of the airflow on the inlet side, the casing height is only

a couple of centimetres more than the duct dimensions.

All rectangular in-line duct fans from AB C.A. Östberg have swing-out motor and

impeller assemblies for ease of maintenance and cleaning.

We at AB C.A. Östberg are committed to giving everyone the opportunity of

a better indoor climate. Our products do this by extracting the stale air and replacing

it with clean air.

Another revolutionary invention

A N E W G E N E R A T I O NO F D U C T F A N S

2

P R E S S U R E / F L O W

R K 4 0 0 x 2 0 0 C1With forward curved impeller and swing-out design

T E C H N I C A L D A T A

I N P U T / F L O W

R K 4 0 0 x 2 0 0 C 1

Voltage, V/Hz 230/50

Current, A 0.95

Input, W 215

Speed, rpm 964

Weight, kg 11

Wiring diagram 4040001

Capacitor, µF 6

Insulation class F

Motor protection IP 44

195 l/s 205 PaTot LpA LwA tot dB (A) 63 125 250 500 1K 2K 4K 8K

Eenvironment 50 57 36 46 52 50 52 45 40 32

D I M E N S I O N S (mm)

5 0.236 75 90 86 78 70 64 58 57 51

148 0.214 72 82 82 76 68 61 56 54 48

184 0.196 71 82 81 75 67 60 55 53 47

221 0.16 70 82 80 74 64 59 54 51 44

Ps(Pa) Q(m3/s) 63 125 250 500 1K 2K 4K 8K Model

RK 400x200 C1

Single figure on performance curves are overall inlet LwiA sound power levels,derived from measurements taken in laboratory specificially under ducted conditions.Followings is the inlet Lwi sound power levels(dB)in eight octave bands at four operation point:

Inlet Sound Data

Performance certified is for installation type D-Ducted inlet,Ducted outlet.Speed(RPM)shown is nominal. Performance is based on actual speed of test.Performance ratings do not include the effects of appurtenances(Accessories). The A-weighted sound ratings shown have been calculated per AMCA International Standard 301.The sound power level ratings shown are in decibels,referred to 10-12 watts,calculated per AMCA International Standard 301.Values shown are for inlet Lwi and Lwi(A) sound power levels for installation type D:ductet inlet,ducted outlet.Ratings include the effects of duct end correction.

In-Duct sound data are not licensed by AMCA International.

Wiring diagrams

1~

4 0 4 0 0 0 1 Single-phase

Inlet 69 58 64 64 61 55 56 54 47

IN-DUCT SOUND DATA

L tot dB(A)wA

0 0,04 0,08 0,12 0,16 0,20 0,280

50

100

150

200

2500 250 500 750 1000

0,24

40˚C

70

72

75

Stat

ic p

ress

ure

Pa

3

AB C.A.ÖSTBERGÖSTBERG (KUNSHAN) VENTILATION CO.,LTD

Tel: 0512-57639555Fax: 0512-57639588

E-mail: info@ostberg.comwww.ostberg.com

ÖSTBERG FOR HEALTHY INDOOR CLIMATE

WITH ENERGY EFFICIENT VENTILATION

Östberg is one of the leading producers

of fans in the world.

In the early 1970s the founder and

owner of the company designed the first

circular and rectangular in-line radial duct

fan with external rotor motor and straight-

through airflow (180°) in the history.

We have continued to develop new

products and today we offer a wide pro-

duct range of centrifugal in-line duct

fans, roof fans, wall fans and energy reco-

very units.

Our goal is to always offer quality

products at competitive prices.

Catalog RK 400*200 C1 Rev.1

4

Edited/June 2015