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Installation and Operating Instructions
CHAPTER 2
GENERAL INFORMATION
m
WARNING
CHAPTER 3
INSTALLATION
Roof fans – RD/VD EC
1�11 Functional safety – Emergency operation
When using the roof fan in an important supply function, the plant must be designed so that emergency operation is
automatically guaranteed in case of fan failure. Suitable solutions include e.g.: parallel operation of two less powerful units
with a separate electric circuit, standby fan, alarm systems and emergency ventilation systems.
2�1 Warranty claims – Exclusion of liability
All versions of this documentation must be observed, otherwise the warranty shall cease to apply. The same applies to
liability claims against Helios. The use of accessory parts, which are not recommended or offered by Helios, is not
permitted. Any possible damages are not covered by the warranty. Changes and modifications to the unit are not
permitted and lead to a loss of conformity, and any warranty and liability shall be excluded in this case.
2�2 Regulations – Guidelines
If the unit is installed correctly and used to its intended purpose, it conforms to all applicable provisions and EU guide-
lines at its date of manufacture.
2�3 Shipping
The fan is packed ex works in such a way that it is protected against normal transport strain. Carry out the shipping
carefully. It is recommended to leave the fan in the original packaging. The fan must be kept in the casing or the provi-
ded lifting lugs (over Ø 450) for transportation or installation. In this respect, only use appropriate lifting equipment and
fastening devices. Weight information can be found on the label on the unit.
Do not transport fan on the connection cables, terminal box or impeller!
Do not stand under suspended loads!
2�4 Receipt
The shipment must be checked for damage and correctness immediately upon delivery. If there is any damage,
promptly report the damage by consulting the transport company. If complaints are not made within the agreed period,
any potential claims will not be valid.
2�5 Storage
When storing for a prolonged time, the following steps are to be taken to avoid damaging influences: Motor protection by
dry, airtight and dust-proof packaging (plastic bag with desiccant and humidity indicators). The storage place must be
waterproof, vibration-free and free of temperature variations. Storage temperature -20 °C to +40 °C. These limits must
not be exceeded. In case of a storage period of more than three months or motor standstill, the bearings must be inspec-
ted before commissioning. In this respect, the silent, free movement of the impeller must be checked. When transhipping
(especially over longer distances) check if the packing is adequate for method and manner of transportation.
Damages due to improper transportation, storage or commissioning are not liable for warranty.
2�6 Series
These installation and operating instructions describe the Helios roof fans in the following series:
Series
Centrifugal roof fans RD
Vertical roof fans VD
Binding information on the individual fan types can be found on the type plate.
2�7 Performance data
The motor type plate gives an indication of the electrical values; which must be coordinated with the local supply
network. The fan performances* were established on a test stand according to DIN EN ISO 5801:2010-12; they apply
to the nominal speed and standard design with unhindered inflow and outflow. In this respect, different versions and
unfavourable installation and operating conditions can lead to a reduction of output.
2�8 Noise data
The noise data* also refers to the directive specified in section 1.4. Casing variations, unfavourable operating conditions
and many other things can lead to an increase in the specified catalogue values. Data that refers to certain distances
(1 m, 2 m, 4 m) apply to free field conditions. With regard to installation, the sound pressure level can differ significantly
from the catalogue data, as it is highly dependent on the installation conditions, i.e. on the absorption capability of the
room, the room size among other factors.
3�1 Installation
The installation site must be suitable for the roof fan in type, condition, ambient temperature and ambient medium. The
substructure must be level and sufficiently load bearing. The mounting elements should be as level as possible (max.
5 % incline), however, installation on inclined surfaces up to 45° angle of inclination is possible (e.g. with the pitched
roof base Type SDS, accessories).
Version
EC
EC
5
EN
Diameter
180 - 630 mm
180 - 630 mm
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