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In-line rectangular smoke exhaust fan series BK..
INSTALLATION AND OPERATING
INSTRUCTIONS
In order to ensure trouble-free operation and for
your own safety, all of the following instructions
should be carefully observed.
RECEIPT
The shipment must be checked for damage and
correctness immediately upon delivery. If there is
any damage, promptly report the damage with the
assistance of the transport company. If complaints
are not made within the agreed period, any claims
could be lost.
STORAGE
When storing for a prolonged time, the following
steps are to be taken: The storage location must be
Vibrationfree, watertight and free from temperature
fluctuations. Damages due to improper transportati
on, storage or commissioning must be verified and
are not liable for warranty.
In case of several years of storage or motor stand
still, the bearings must be inspected and replaced,
if necessary, before commissioning. Electrical testing
must also be carried out according to VDE 0701 or
VDE 0530/ EN 60034.
In case of reshipment (above all, over longer distan
ces), it must be checked whether the packaging is
suitable for the form and route of transport.
Damages due to improper transportation, storage or
commissioning must be verified and are not liable for
warranty.
AREA OF APPLICATION
The fans are suitable for smoke extraction at air flow
temperatures of 400 °C /120 min. (oneoff).
In case of operation under difficult conditions e.g.
high humidity, longer periods of standstill, heavy con
tamination, excessive loads due to climatic, technical
or electronic influences, further enquiry and release
approval is necessary as the standard version may
not be suitable.
The unit is jet waterprotected (IP55) and suitable for
sheltered outdoor installation. The unit must be pro
tected against the effects of weather. The fan may
only be used according to its intended purpose.
This
also includes the use in ventilation mode (units can
only be used as pure smoke extraction fans due to
the Ecodesign directive, no dual function/dualuse).
PROTECTION AGAINST CONTACT
The generally applicable safety at work and ac-
cident prevention regulations must be observed
for installation.
Contact with rotating parts must be avoided. It must
be ensured that there are no textiles (e.g. curtains) or
other materials that could be sucked up in the intake
area.
Fans which are protected by their installation method
(e.g. installation in ventilation ducts or closed assem
blies) do not require protection guards if the plant
provides the same level of safety.
Please note that the installer can be held liable for
accidents as a consequence of missing protection
systems.
SAFETY IN CASE OF FIRE
In case of fire, the provided motor protection circuit
breaker or thermal contact input must be bridged/
bypassed. This guarantees reliable fan operation.
The unit must be connected to an emergency power
supply.
The mains supply line must be fireproof or installed
outside of the possible fire zone to be protected.
The building inspectorate regulations must be obser
ved.
FUNCTIONAL RELIABILITY - EMERGENCY
OPERATION
In accordance with the propertyspecific operating
conditions, it may be necessary to design the smo
ke extraction system in such a way that emergency
operation is automatically guaranteed in case of fan
failure. Suitable solutions include the parallel operati
on of two less powerful devices with separate electric
circuit, redundancy, alarm systems and emergency
ventilation systems.
ELECTRICAL CONNECTION
ATTENTION: The unit must be fully isolated from
the mains power supply before any maintenance
and installation work.
The electrical connection must only be carried out by
an authorised, qualified electrician. The relevant saf
ety and installation regulations must be observed. An
allpole mains switch with at least a 3 mm contact
opening is mandatory.
The motor type plate provides information about the
electrical values; these must be checked for confor
mity with the local conditions.
The installation and operating instructions for all used
accessory parts must also be observed.
The mains supply line must be inserted so that water
cannot penetrate along the cable in case of water ex
posure. Never lead cables over sharp edges.
ATTENTION: Incorrect direction of rotation can
lead to the overheating of the motor.
Three phase current types must be connected
by interchanging two phases for anti-clockwise
rotation in case of electrical connection in the
clockwise field of rotation.
MOTOR PROTECTION
Each fan motor must be protected separately against
thermal overload and phase failure by a motor pro
tection circuit breaker. Motor protection circuit brea
kers or socalled triggering devices must be used for
correct connection. All motor types used in this se
ries must be equipped with thermal contacts or PTC
thermistors. They must be connected to the terminal
board and wired with a suitable full motor protection
device (Helios accessories).
The electrical connection must be established so that
the fan is operated until electromechanical failure in
case of smoke extraction. In this respect, each type
of motor protection device must be bridged in case
of smoke extraction and not cause the fan to deac
tivate.
IMPORTANT:
With regard to smoke exhaust
fans, the substitute power supply system must
be connected for automatic operation bypassing
the thermal contacts or PTC thermistors and the
motor protection circuit breaker or control unit.
SPEED CONTROL
The speed regulation of a smoke exhaust duct fan is
not permitted.
The electrical connection must be established so that
the fan is operated at nominal speed in case of smo
ke extraction.
ATTENTION: The use of other brands, especially
other electronic devices, can lead to functional
problems, destruction of the controller and/or the
fan. Units that have not been approved by Helios
are not liable for warranty and guarantee claims.
INSTALLATION
The fans are delivered as complete units as standard,
i.e. ready to install.
The swingout area and ease of access to the mo
torimpeller unit must be ensured. The motor may
only be “suspended” in the horizontal mounting posi
tion. The descriptions and specifications in the decla
ration of performance must be observed. The pre
vention of structureborne sound transmission must
be ensured during installation. For this purpose, use
flexible connectors (see Accessories) e.g. between
fan and ducting. Insert suitable screw locks to pre
vent loosening.
In case of pipe or duct installation, it must be ensured
that a sufficiently long duct section is installed before
and after the unit, otherwise a significant reduction in
performance and increase in noise levels can be ex
pected. Devices for collecting and discharging con
densation and cleaning agents must be provided at
suitable points in the ducting.
The planners and operators must ensure easy ac
cess for maintenance, inspection and cleaning work.
The necessary space conditions and access possibi
lities must also be guaranteed for possible fan repla
cement.
COMMISSIONING
Air flow direction and direction of rotation
The units in series BK.. have a fixed direction of ro
tation and air flow direction (reverse operation not
possible), which are marked on the units with arrows.
The direction of rotation can be checked on the mo
tor for installed fans.
Checks:
The following checks are to be carried out:
– Check the intended use of the unit (pure smoke
extraction fan).
– compare power supply voltage with motor rating
plate.
– check that the unit is securely mounted.
– check all parts especially screws, nuts and grilles
for tight fit.
– check free movement of the impeller.
– check if direction of rotation and air flow direction
correspond.
– compare power consumption with data on the ra
ting plate.
– test functioning of motor protection device (brid
ging in case of fire).
– test protective conductor connection.
– check sealing of the connection cable and tight
clamping of the cable wire.
– Commissioning may only take place if protection
