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Application Guide /FLEXAIR-AGU-1505-E
1- GENERAL DESCRIPTION
1.1. GENERAL FEATURES
FLEXAIR range constitutes a packaged solution, easy to deliver
and quick to install on the roof.
Operating range shall be between 46°C and minus 12°C with
4 versions : cooling, heating, cooling with gas burner or dual
heat (heating with gas burner). All units are factory assembled,
internally wired, fully charged with refrigerant, and 100% run-
tested before leaving the factory.
EC FANS TECHNOLOGY
FLEXAIR units are fi tted with EC fans as standard, the variable
speed option will save energy and reduce maintenance costs.
HIGH INDOOR AIR QUALITY
Filtration
FLEXAIR offers different fi ltration levels, ensuring the minimum
pressure drop.
The unit is fi tted with EU3 fi lters as standard, but it can be
confi gured with :
- G4 fi lters
- G4+F7 fi lter option / effi ciency > 85% / 0,4 μm particles
Free cooling
Some times the thermodynamic cooling can be replaced by
free cooling by introducing cold outside air into the building.
FLEXAIR saves energy with automatic calibration of fresh air :
- Intelligent Fresh Air Management (patent 03 50616)
- Motorised fresh air damper with enthalpy control (option)
- CO2 sensor to adjust the percentage of fresh air to the Indoor
Air Quality (option)
eClimatic ADVANCED CONTROLLER
eClimatic is the new generation controller that improves effi ciency
and helps set up and service operations to guarantees long
lasting performance
HEAT RECOVERY SOLUTIONS
FLEXAIR range includes a heat recovery wheel to recovery
energy from the extraction air
This heat recovery wheel is fi tted in a separated module to be
installed on site
1.2. CASING
FLEXAIR indoor section is built with precoated galvanized steel
panels painted in RAL 9003 color, specially designed for corrosion
resistance and to ensure long operation life time.
Double skin can be demanded as an option.
Condensing section mounted in a rigid base frame to ensure
good support for compressors and giving rigidity to the complete
structure.
1.3. ADVANCED REFRIGERANT
CIRCUIT
FLEXAIR presents the most advanced design in the refrigerant
pipes, optimizing pipe length and at the same time giving the
best access for service and maintenance operations.
The exchangers have been specially designed by Lennox for
R410A operation, this copper tube and aluminum fi ns exchangers
have been tested to give the best heat transfer and the best
energy ratios.
The refrigeration circuit is responsible for up to 40% of the annual
energy consumption of a typical packaged air conditioning unit.
FLEXAIR features high effi ciency, environmentally friendly
refrigeration circuits with multiscroll R410A compressors,
electronic expansion valves and optimized heat exchange
surface area.
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