Helios HQ EC Serie Montage- Und Betriebsvorschrift Seite 38

Installation and Operating Instructions
EN
CHAPTER 3
INSTALLATION
m
NOTE
Axial high-performance fans EC – HQ EC / HW EC / HRF EC
3�1 Design Series HQ EC / HW EC
The fan types HQ EC (Fig.7) / HW EC (Fig.8) consist of a mounting plate/ring with integrated inlet nozzles, an EC
motor which is mounted to the protection guard (pursuant to DIN EN ISO 13857) and a dynamically balanced impeller
according to ISO 1940 pt1, class G 6,3. The flow direction is via the motor inlet. With regard to 250 A, 315 A, 355 A,
the electrical connection to a separate terminal box (included in scope of delivery) is necessary. Directly to the motor
on the larger types.
Installation example:
HQ EC for horizontal wall installation
HQ EC
Series HRF EC
The HRF EC (Fig.9) consists of a flange pipe, an EC motor with mounting struts, a dynamically balanced impeller ac-
cording to ISO 1940 pt1, class G 6,3 and a terminal box fixed to the pipe. A protection guard made of galvanised steel
wire pursuant to DIN EN ISO 13857 is available on request. The flow direction is via the motor outlet.
Installation example: EC high-performance fan HRF EC with accessory parts
Mounting bracket MK
Inlet nozzle ASD-SGD
Protection
guard SG
Information on the accessories can be found on the internet, main catalogue and the sales documents. The dimensi-
ons of the individual series can be found in „CHAPTER 5 DIMENSIONS".
HW EC for horizontal wall installation
Fig�7
Mounting
holes
High-
performance
impeller
EC motor
Protection guard
Square moun-
ting plate with
integrated
nozzles
Terminal box
HW EC
Extension duct VR (optional)
– required for motor protrusion –
HRF EC
8
Mounting
holes
High-
performance
impeller
EC motor
Protection guard
Wall mounting
ring with nozzles
Terminal box
Vibration damper SDZ
for tensile loading
Protection guard SG
Counter flange FR
Flange flexible
Backdraught
connector STS
shutter RVS
Mounting bracket MK
Anti-vibration mounts SDD
for pressure loading
Fig�8
Fig�9