Installation instruction
FläktGroup
DC_8658GB 20181214_R0
We reserve the right to make changes without prior notice
3
GENERAL INSTRUCTION
DISMANTLING/REASSEMBLY
It is possible to dismantle the eQ unit. Dismantling should be
carried out without damaging individual components. Reassem-
bling the unit is associated with compromised functionality and
leakeage issues. Dismantling and reassembling of the eQ unit
results in invalidation of any liability regarding functionality and
leakage class from FläktGroup side.
Factory staff will discover if a unit has been dismantled and
reassembled.
If possible, notify the factory if dismantling of the unit is plan-
ned. Facilitating and quality ensuring measures can be taken.
SOUND TRANSMISSION
If a unit is located by a wall, low-frequency sound generated in
the unit may create vibrations in the wall, even though the noise
level in the fan room is acceptable.
The unit should preferably be installed by the wall in the fan
room that does not border on a soundsensitive space. If such a
wall is lacking, install the unit 400–500 mm from the wall.
Duct lead-throughs must be carefully designed so that there
will not be any rigid contact between the duct and the wall. The
insulation around the ducting must also be carefully fitted so as
not to transmit sound to adjoining spaces.
It is advisable to interconnect the ducts by means of flexible
connections if they are arranged through sensitive spaces.
Sound may correspondingly be transmitted through the floor if
the composition/mass and rigidity of the floor is inadequate.
The mass must at least be equivalent to the recommendation
specified in VVS AMA 98 (Part RA, Section QE) (General Material
and Workmanship Specifications for Building Services Installa-
tions in Sweden), i.e. the mass of a floor having a surface that is
4 times the surface of the air handling unit must be at least 5
times the mass of the vibrationisolated object (i.e. the air hand-
ling unit above and supported on anti-vibration mountings).
If the floor has a light structure, its mass and rigidity can be
improved by laying a heavy-duty insulation mat on the floor
beneath the entire air handling unit. The whole bottom of the unit
must then rest on the mat (and plate, if fitted).
CHECKING PRIOR TO COMMISSIONING
1. Work through the following points depending on whether
the components are present in the unit concerned. Start
with the electrical connection switched off.
2a. Check that the unit is aligned horizontally.
2b. Check that the inspection doors operate easily. If necessary,
adjust the hinges according to the separate instruction.
3. Check that the unit is clean internally and externally.
4a. Damper with actuator.
Check that the outdoor air and exhaust air dampers are
closed when the actuating motor is in its end position, and
that it opens the damper on starting the fan. The return air
dampers shall be open in the corresponding position.
4b. Damper with manual adjustment.
The damper shall be locked in the open position before
starting the fan.
5. Filter.
Check that the filter cassettes are in place, and that the
locking device is closed.
• For all air handling units placed on the European market
after 1st January 2018 the EU regulation 1253/2014
states that they must be equipped with a visual signal or
signal to the control system for filter change.
All AHU:s with FläktGroup integrated controls is equipped
with alarm or monitoring of filter pressure drop. For units
without
FläktGroup AHU controller this must be
arranged by the installer.
6. Manometers and flow instruments.
Check that the instruments are zeroed and correctly
connected (+/-) to the measurement socket.
7. Filter sensor.
Set the desired pressure difference on the filter sensor,
if present, according to the separate instructions.
8. Check other functions according to separate instructions.
9. Check that all the transport safety devices have been
removed.
N.B.!
The fan must never be started with
the dampers closed.
