Helios HSDV Notice De Montage Et D'utilisation page 12

Installation and Operating Instructions
EN
HINWEIS
HSDV – Roof Fan Attenuator
Install roof fan attenuator
1 . Install mounting bracket 
1.1 In case of roof fan sizes Ø 315-500 mm:
Loosen the screw used to fasten the mounting bracket.
Only loosen the screw with the recess on the mounting bracket!
1.2 Position the mounting bracket in the corner.
1.3 Hand-tighten the screw. If necessary, the mounting brackets must be readjusted.
1.4 Tighten the screw.
Fig . 3
1.5 In case of roof fan sizes Ø 560-630 mm:
Loosen both screws used to fasten the mounting bracket.
1.6 Position the mounting bracket in the corner.
1.7 Tighten the screws.
Fig . 4
Steps 1.1 - 1.3 and 1.4 - 1.6 must be carried out for all 4 mounting brackets. Check all screws for tight fit.
2 . Install internal noise attenuation core 
2.1 Place and align internal noise attenuation core on the mounting brackets.
Material damage due to the squashing of the roof fan connection cable.
When aligning the internal noise attenuation core, the roof fan motor connection cable can be damaged.
Do not clamp the motor connection cable between the mounting bracket and internal noise attenuation core!

2.2 Fasten the internal noise attenuation core and mounting bracket with the self-tapping screws .
Fig . 5
3 . Install external noise attenuation casing 
3.1 Place the external noise attenuation casing on the roof fan.
3.2 Place the protection grille  on the roof fan attenuator.
3.3 Mount the protection grille on the external noise attenuation casing with the provided sheet-steel screws .
Fig . 6
4 4