ONE-WAY COANDA EFFECT CASSETTE 42KY
Features and advantages
Energy performance, comfort and indoor air quality:
Carrier’s new 42KY cassette is the all-in-one solution to
meet heating and cooling requirements for commercial
buildings and provide optimum comfort for users.
Low consumption (LEC) variable speed active comfort
unit making it possible to adapt the indoor temperature
automatically and independently to the preferences of
occupants with very quick response times.
Coanda Effect diffusion, optimised according to the standard
NF EN ISO 7730, ensures perfect control of thermal
phenomena that can cause discomfort. Carrier’s new 42KY
cassette makes it possible to eliminate draughts that are felt
with sweeping diffusion systems or direct airflow onto the
occupant.
Eco-designed product that is 90% recyclable. The 42KY
cassette has been developed to limit its impact on the
environment throughout its life cycle.
The air treatment unit is fitted within the suspended ceiling, at
the edge of the room, with the outlet facing the windows. It
has all the economical advantages that come from installing
and operating a central heated and chilled water production
unit. The location facilitates hydraulic connection via the
suspended ceiling of the adjoining corridor, and gravity
draining of condensate (no pump).
Operating logic
The Coanda effect
The centrifugal turbine draws air through a perforated metal
intake grille. The air is filtered, then heated or cooled through
a temperature exchange coil fed with either hot or chilled
water. The air is then pulsed horizontally at 180°, by means
of the Coanda Effect in the room to be treated.
One-way Coanda Effect diffuser:
The single slot peripheral outlet with its narrow opening and
specific internal profile will increase the initial speed of the air
as it leaves the diffuser. The high speed of the moving flow
of air causes an area of low pressure which keeps it close
to the ceiling, (there is no direct blast on occupants) and the
ambient air is drawn in by induction to be reinjected in the air
stream. The air mix rate, the range and the coverage of the
air flow are improved, which reduces thermal phenomena
that cause discomfort in the occupied area (residual air flow
rate, asymmetric temperatures, radiation caused by walls,
etc.).
Fresh air inlet spigot
AIR TREATMENT
1
1
4
4
22
Spigot Ø 100 mm, max air flow
90 m3/h recommended. Network
balancing system not supplied
by Carrier.
33
CONTROLS
1)Fresh air inlet on device
2)Ø100 / Ø125 mm adapter
3)Air flow controller 60/75/90 m3/h
4)Air flow controller 15/30/45 m3/h
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