4
Setup and assembly
If an air handling unit is shipped in several parts, you
have to erect and assemble it on site. The arrangement
of the AHU casing units is given on the order-specific
approval drawing.
Explosion protection
WARNING!
Risk of explosion from incorrect setup or
assembly!
Incorrect setup or assembly of the air handling unit
may lead to an explosion.
–
Set up the AHU only in an Ex zone for which it
has been approved; see the rating plate for
details.
–
Be sure to include the AHU in the explosion pro-
tection strategy for the entire system.
–
Any electrical or mechanical components or
devices to be installed or used in the AHU have
to be approved for at least the same Ex zone.
Due to normal leakage, an explosive atmosphere
may escape from the inside of an AHU to the
surrounding area (zonal dispersion). If the zone
inside the AHU is more hazardous than in the
surrounding installation room, any electrical or
mechanical components or devices to be
installed or used within a radius of 1 m (some-
times more) around the AHU have to be
approved for the same zone as the inside of the
AHU.
–
Be careful not to damage any factory fitted equi-
potential bonding equipment, and do not remove
it. If you have to remove any of it for assembly,
be sure to fix it again properly afterwards.
–
Connect components and devices installed by
others to the equipotential bond.
–
Ensure that duct and pipe insulation materials in
the Ex zone do not lead to a build up of electro-
static charges as these may lead to an explo-
sion.
–
Comply with the code of good practice for explo-
sion protection when you assemble the unit.
Failure to comply with these safety notes may lead to
an explosion.
Conformity assessment
If components or devices which cannot in themselves
perform a specific application (partly completed machi-
nery) are incorporated into fully functional machinery,
the individual who performs the incorporation or
assembly is responsible for the conformity assessment,
for creating the declaraion of conformity and for
attaching the CE mark.
4.1 Safety instructions
Explosion protection
WARNING!
Risk of explosion!
Ignition sources, such as sparks, open flames or hot
surfaces, can lead to explosions in an area with
potentially explosive atmospheres.
–
Only specially trained personnel must carry out
work in an area with potentially explosive atmos-
pheres.
–
Get written permission before you start working
in an area with potentially explosive atmos-
pheres.
–
If you have to carry out work, either ensure that
there is no potentially explosive atmosphere, or
at least avoid any source of ignition. If you have
to work in a zone with potentially explosive
atmospheres, use only equipment that has been
approved for use in that particular zone.
Failure to comply with these safety notes may lead to
an explosion.
Setup and assembly
WARNING!
Risk to life from incorrect setup and assembly!
The incorrect setup and assembly of AHU casing
units can lead to potentially fatal situations and
cause considerable damage to property. Incorrect
setup and assembly will also impair the function of
the unit.
–
Air handling units must only be set up and
assembled by HVAC technicians.
Setup and assembly
Safety instructions
Air handling unit X-CUBE Ex
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