CIAT MAJOR LINE 102A Manuel D'instructions page 36

Horizontal model:
The unit is installed in the ceiling.
The unit must be secured using 4 x 6 mm or 8 mm threaded rods (not supplied), to
be attached to the 4 oblong holes using antivibration resilient mounts (accessory).
Warning: Do not fit the metal washer
For an NCH model, ensure that the suspended ceiling panels can be easily
removed and that there is enough space to carry out maintenance and
servicing operations.
For an NCH U model, the supply plenum must also be secured to the ceiling using
a 6 mm or 8 mm threaded rod (not supplied), to be attached to the support bracket
using a resilient mount (accessory, fig. 5, a) or a nut and washer assembly placed
either side of the support bracket (fig. 5, b).
Note: CIAT strongly recommends the use of antivibration resilient mounts when
securing the bracket, in order to reduce the transmission of vibrations through the
building structure during operation.
Vertical model:
Fixed to the wall by 4 screws
l
Placed on the ground with support feet or air recovery unit (model with air recovery
l
underneath)
Placed directly on the ground (model with air recovery on the front)
l
Important:
● All units must be perfectly level.
● Check that there is a sufficient gap between the back of the unit and the wall
(horizontal model, assembly without air recovery unit) or the floor (vertical model,
assembly without feet) (min. 100mm) (fig. 6) if the air recovery is not ducted.
● If a room thermostat control is provided, place it on an inside wall (not behind
a door) at a height of 150 m from the floor. Keep it away from sunlight and all
sources of heat.
AIR CONNECTIONS
Air quality:
Comfort units are not designed to control the humidity of outside air. Fresh air
handling must be provided by an independent system in accordance with accepted
engineering practice (see CIAT's ranges of air handling units).
Important: On all models with plenums, all collars must be connected. None must
be capped, either at the supply or return air.
Fresh air knockout
The fresh return air must be taken from air pretreated by an air handling unit which
complies with European regulation No. 1253/2014.
Under no circumstances may fresh air from outdoors be connected directly to the
unit.
EN - 4