Airwell K 45 OG [2/16] Design features
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Airwell K 45 OG [2/16] Design features

Airwell K 45 OG [2/16] Design features
Page 2
Design Features
Introduction
Chilled Water units of the "Cassette" type offer comfortable air
conditioning at a low cost of installation. They fit harmoniously into
standard modules of a false ceiling thanks to their design and small
space requirements.
They are easy to be connected with water chillers producing chilled
or hot water, and are used for :
- Cooling (Chilled Water) and Heating (Electric Heating).
- Heating (Hot Water). Simultaneous operation of Heating (Hot
Water) and Electric Heating is strictly FORBIDDEN.
Cassette air treatment unit
It combines excellent technical qualities, reliability and easiness of
installation. It includes :
- A flat (287 mm thick), insulated unit, flash mounted to be fitted
into the false-ceiling, of a size compatible with standard modules
of a false-ceiling (600 x 600 mm).
- Three-speed ventilation.
- Built-in electric heating to be connected on site.
- Condensate pump to lift at the top of the cassette. Draining should
be provided for by gravity.
- Electric box of control and overload protection to be mounted on
site.
- Combined discharge/air return grille with airfilter, discharge
adjustable by hand on all 4 sides, air return at the center.
Casing
- Panels and insulated sheet.
- Combined discharge/air return grille supplied separately for the
Cassette.
- Possible hand operated adjustment of air distribution on all four
sides. Possibility to close one or two faces of discharge.
- Air return at center with filter.
- Prepunched holes for connection with fresh air intake and
connection with a stub duct to treat an adjacent room. In that case
it becomes necessary to provide a decompres-sion in the adjacent
room (grille ...) to allow air return on the Cassette.
Insulation
Heat and sound insulation throughout the indoor air treatment
unit.
Ventilation
- Centrifugal turbine with direct drive.
- Motors mounted on rubbers and equipped with internal thermal
safety devices. 3-speed motor for the air treatment unit.
Filtration
Cleanable air filter accessible after opening the discharge/intake
combined grille.
- Filter type : Rapidly removable cassettes
- Media : Woven synthetics
- Fire resistance : M4 (PV LNE N° 812 02 29 to 30/01/89)
- Efficiency : 55% (EUROVENT 4/5 - ASHRAE gravimetric 52-76 NF
X 44-012)
- Maintenance : Washable (cold water with detergent not more than
25 washings) or dry dedusting.
Electric heating
- The Cassettes are factory-equipped with electric heating to be
connected on site.
- The electric heating equipped with heating resistances is heat
protected against any abnormal raise of temperature by two
thermostats :
• a thermostat with automatic reset,
• a thermostat with manual reset.
Kits available
Several kits to control are available :
- Condensing tray kit.
- Kit : motorized 3-way valve with by-pass.
- Electromechanical and electronic control system.
Documentation
Every appliance is supplied with its basic electrical diagrams of
connection, specific instructions of installation and use.
Every accessory (or kit) is delivered with technical specifications of
assembly and adjustment if need be.
The codified nomenclature of spare parts, exploded views, technical
data and recommendations for operation and maintenance are
available upon request.

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