
UK
2.0
Dimensions
2.1
Accessories
The part numbers of the Helios accessory components are to be found in the respective sales documents (SD).
CHAPTER 2
DIMENSIONS AND
ACCESSORIES
4
EC-Centrifugal-Roof fan RDW EC ..
Installation and Operating Instructions
RDW EC 225
849
352
32
16
6xM6
441
330
259
R196
12
Type
Ø A
B
C
D
E
c
F
c
G
Ø H
I
Ø J
Dimensions in mm
Note:
Suitable potentiometers and
speed regulation with universal
control system) are offered in the
current EC-catalogue “EC-gre-
enVent - The ventilation of the
future” accessories program.
Flange
Type FR ...
Ref..-No. SD
From galvanised sheet steel, for
connection to ducting.
Flanged flexible connector
Type STS ...
Ref..-No. SD
Prevents vibration transmission to
the ducting. Flanges from galvani-
sed sheet steel.
Back draught shutter
Type RVS ...
Ref..-No. SD
Automatic, from galvanised sheet
steel, shutter from aluminium. Pre-
vents draughts when fan is not acti-
vated. Vertical for air flow direction
going upwards.
Motorised back draught shutter
Type RVM ...
Ref..-No. SD
AS RVS, but with spring reversing
motor (outside the air flow). Vertical
for air flow direction in any direction.
Hinged flat roof base
Type FDS ...
Ref..-No. SD
Hinged for easy inspection and
cleaning.
Corrugated roof base
Type WDS ...
Ref..-No. SD
For EC-roof fans and roof cowls on
corrugated roof. Slope of 25° allo-
wed. From glass reinforced poly-
ester. Profile No. 5.
Hinged base attenuator
Type SSD ...
Ref..-No. SD
Hinged for easy inspection and
cleaning. Average attenuation is 15
dB. For attenuation on the intake.
All metal parts made of galvanised
sheet steel.
Universal control system
Type EUR EC
Ref.-No. 1347
For stepless control or adjustment
of single- and 3-phase EC-fans
with an input control signal of 0 -
10 V DC.
Speed potentiometer
Type PU / PA 10
see type table
For stepless and direct control or
nominal value preset of EC-fans
with potentiometer input.
Fig.4
RDW EC 315
1018
412
32
20,5
8xM8
603
450
356
R264
12
RDW EC 400
1018
452
32
16
6xM8
633
535
438
R302
12
RDW EC 450
1298
487
32
16
6xM8
758
590
487
R358
14