9
Before initial commissioning
■
Check to ensure that
mechanical installation was
performed correctly
■
Check that connection to the
on-site heating system has been
established correctly
■
Check whether hot surfaces are
protected against unintentional
contact
■
Checked whether the electrical
wiring of the units has been
established in accordance with
the applicable directives and
standards, and observing the
enclosed circuit diagrams
■
The fan chamber, the intake
and discharge areas must be
checked for foreign objects
■
The fan's ease of movement
must be checked
■
Disconnect the power supply to
the switchgear (accessory) and
switch on the unit using the
switchgear's control switch
■
Check the fan’s direction of
rotation.
The direction of rotation is
changed by reversing 2 phases
or with an external switchgear
(accessory)
Commissioning
Drainage when at risk of
freezing
Complete static drainage of
the finned heat exchangers is
not possible in the condition as
installed.
If necessary, drainage is only
possible with the assistance of
compressed air.
Important information
regarding anti-freeze protection!
In order to prevent frost damage,
a frost protection device must be
used at temperatures below 0 °C.
In systems that are
decommissioned in rooms at risk of
freezing, the heat exchanger may
never contain "only" water.
The heating medium (water) must
then be supplemented with a
suitable antifreeze with a sufficient
mixture ratio for the environment.
In the process, the hydraulic
output loss must be taken into
account.
■
Note that if using a speed
controller (accessory), the
regulating device output must
be attuned to the total output
of the connected motors
■
Check whether all air discharge
and intake openings are opened
accordingly
CAUTION
Commissioning can only take
place once it has been assured
that the proper assembly
and electrical installation
correspond to the applicable
provisions of the EC Directives.
CAUTION
No guarantee claims can be
accepted for frost damage on
the finned heat exchangers!
Water inlet
Water outlet
Draining the
heating/cooling
medium
Bleeding
Screw connections
The 3 fin segments in the lower
housing part (vertical discharge or
intake) can each be adjusted as a
unit with a louvre.
Air guidance
The fins in the upper side housing
part (horizontal discharge or
intake) can be adjusted individually
in 5 ° increments.
Содержание PWL 101-H
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