8
Vallox
90
MC
© VALLOX • We reserve the right to make changes without prior notice.
What the units include can vary depending on the sales area.
1.09.420E/14.5.2013/PDF
MOUNTING INSTRUCTIONS
Ceiling mounting/
ceiling mounting plate
Fastening of ceiling mounting plate to ceiling.
The ceiling mounting plate is mounted straight,
and it has to be fastened so that there is a
space of circa 6 mm between the back edge
of the ceiling mounting plate and the wall
(Figure 1). The ventilation unit then becomes
attached to the back wall. Minimum distance
between the bottom edge of the ceiling
mounting plate and the ceiling of the room
is 14 mm. With this distance, there will be a
vent of circa 2 mm between the top edge of
the mounted unit and the ceiling.
The ceiling mounting plate is fi xed to the
ceiling with M8 thread bars. After the thread
bars have been fastened to the ceiling, fi rst
turn the nuts into the thread bars and lift the
ceiling mounting plate in place. Then push a
rubber damper and washer to each thread
bar, all the way into the cup of the plate, and
turn the nut. Shorten the lower ends of the
thread bars so that they will be at no more
than 25 mm from the lower surface of the
ceiling mounting plate. NOTE! Shortening
the thread bars can only be done before
mounting the ceiling mounting plate. The
maximum length of a thread bar from the
lower surface of the ceiling is the space
between the lower surface of the ceiling and
the lower surface of the ceiling mounting
plate + 25 mm.
Mounting of ventilation unit
to ceiling mounting plate
Before lifting the unit to the ceiling mounting plate, detach the front panel
from the unit (and leave it hang from the measurement hoses), Figure 2:
Put the cables of the connection box into the slot in the upper part of the
side plate and pull the connection box next to the unit so that the cables
remain in the slot. Make sure that the duct outlets for the unit’s extract air
duct and for the duct coming from the outside to the unit are equipped with
condensing water insulation. Lift the unit in place to the ceiling mounting
plate till both locking wings lock to the outer edge of the side plate of the
unit. Do a visual check of the tightness of the duct outlets and of the correct
moving of the measurement hoses and electric cables. Fasten the front panel
back in place.
Air fl ow measurement outlets
The fi xed measurement outlets are located behind the nameplate. You can
measure the total pressure of the supply and extract air ductwork at the me-
asurement outlets, using a differential pressure instrument. Pressure readings
and air volume tables show volume fl ow rates at various adjustment posi-
tions. The red measurement hose is on the pressure side and the black hose
on the suction side of the fan.
Figure 1
Nuts
Rubber damper
Lower surface of ceiling
Washer
ceiling
wall
Figure 2
Locking wing
