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HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 14.712 A
Comfort units
Coanda effect cassette
COADIS LINE 900
s
peCifiCation
text
Terminal units
must comply with standards and regulations
in force, in particular: EN ISO 7730 (thermal comfort), EN
779 (filters), EN 1216 (water coils), EN 50022 (DIN rails),
NF C15-100 (electrical components), NF S90-351 (health,
airborne contamination control) and the circular DGS no.
97/311 (disinfection of air conditioning systems). Eco designed
in accordance with standard EN 14062 and in compliance
with environmental certification ISO 14001. They will be
manufactured according to the quality assurance standard ISO
9001, EUROVENT and will have the CE mark. The unit will
be easy to maintain and the supply air/return air system of the
all-in-one type.
The base
will be designed in high-density PSE with very low
TVOC emissions, to provide thermal and sound insulation.
The PSE will be classed A+ in accordance with the order of
19th April 2011 concerning the classification of construction
materials based on their volatile pollutant emissions.
A base panel in galvanised steel to support the internal
components and lateral reinforcements in ABS will ensure a
rigid construction. It will be easy to wash from the inside and
non-erodible. The fire rating will be M1. The components
that make up the base must be able to be separated to
enable optimal recycling of the materials at the end of life
and reduce the environmental impact. Bonded insulation will
not be permitted. The dimensions of the base must allow it to
be integrated in the centre of four suspended ceiling tiles. Its
lightweight design will enabling optimal handling and quicker
commissioning on site. The mounting brackets, which are
equipped with an anti-slip system for the threaded rods, will
make the unit easier to fit.
The Coanda effect diffusion system
will be integrated
in the unit. The naturally optimised single-slot design with
narrow opening means it does not require adjustment to
operate efficiently in any type of room and in all seasons.
Any adjustment system that changes the sound of the unit
by reducing the supply air section (e.g. dampers) will not be
permitted. It will enable horizontal diffusion at an angle of 360°
(Visual interface), completely eliminating radiation transfer
caused by the walls when the jet is falling vertically outside the
occupied space (NF EN 13779) and ensure uniform comfort in
line with the stipulations of standard ISO 7730. Its peripheral
single-slot design will allow a high rate of induction (injection
of ambient air in the air stream) over the entire length so that
the desired comfort temperature can be reached more quickly.
The VISUAL 360°
supply/return interface in RAL 9010 will
be completely insulated by a PSE unit which will completely
surround the panel. It is removable to enable easy maintenance,
and will allow complete access from underneath to all of the
internal components (fan motor assembly, coil, condensate
pan, etc.) without the need to remove the unit or open the
suspended ceiling. Smooth and free from corners where dust
could accumulate, the single-slot diffusion system enables
quick, easy cleaning. The VISUAL 360° interface will be
primarily suited to large spaces, small shopping centres and
meeting rooms.
The air intake
is via a micro-perforated return air grille in
RAL 9010, integrated in the unit and hiding the filter. It can be
opened easily without tools, allowing the filter to be accessed in
under 3 seconds to keep maintenance costs down. The hinge-
mounted grille will allow work to be carried out on the unit in
complete safety.
The EPURE function
(air purification system) is to exceed the
WHO's recommendations on particle removal, reducing PM2.5
particulates to below 10 µg/m3 in less than an hour.
It is to be fitted with an air filter made of polypropylene with
an M1 fire rating, that will not release glass fibres. The filter
should be high energy efficiency and multi-pleated with a
filter area of at least 8 times the intake grille surface area.
A minimum space of 20 mm must be left between the air intake
and the filter in order to ensure that the entire filter area is used,
thereby improving the ambient air quality. Its high retention
capacity ensures an increased service life (flat filters will not be
permitted). In order to reduce waste at the end of the service
life, it must be able to be completely incinerated with no sorting
of materials necessary. It must be accessible via the return air
grille to enable its replacement in less than one minute.
The water coil
will be made of copper tubes and continuous
fins in seamed aluminium. The connections will have one-piece
couplings with a 40 mm centre distance and an integrated
swivel nut to reduce the number of intermediate couplings,
thereby reducing the risk of leaks (direct assembly of valves).
The coils will be equipped with air bleed and draining valves.
They will be tested under extreme conditions with a minimum
test pressure of 24 bar. In order to reduce energy consumption
and simplify commissioning, it will be possible to fit them with
automatically adjusted differential pressure valves to ensure
the water flow rate is maintained, once it has been set with the
manual handle.
The main condensate pan
will be in high-density sealed non-
corrodible PSE. Its naturally sloped design will allow it to drain
condensate directly to the integrated condensate drain pump.
It will be possible to remove the main pan from underneath
without the need to open the suspended ceiling.
Mounted on the outside of the unit,
the auxiliary condensate
pan
in ABS will enable the condensate produced by the cold
water control valve to be recovered. The condensate will also
be drained by the condensate drain pump.
The additional electric heater
running in 230V single-phase
must be shielded with stainless steel. It should be placed
downstream of the water coil in order to save energy (for
simultaneous hot water and auxiliary electric heater usage).
The unit is to be fitted with safety limiters that comply with the
applicable standards. All electric heaters with incandescent
wires or sacrificial fuses will be prohibited. It will be possible to
reduce the power of the electric heater on site.
