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50
5%
5%
Application Guide /FLEXAIR-AGU-1505-E
Standard
BASIC AIRFLOW CONFIGURATIONS
Unless specifi ed otherwise when ordered, FLEXAIR rooftops
are shipped with downfl ow supply and return confi guration.
Units can be confi gured before shipment with the required
airfl ow confi gurations to suit the building needs.
AIR SOCK CONTROL
A standard feature in FLEXAIR, EC fan regulation allow the air
socks to be progressively fi lled with air on start up. It takes one
minute to go from 0% of air to Nominal airfl ow rate
Rooftop
Sealing
Roofcurb
Thermal insulation
400 mm minimum
2.8- AIRFLOW CONFIGURATIONS AND ROOFCURBS
2- OPTIONS DESCRIPTION
ROOFCURBS
Non adjustable non assembled roofcurb.
A sturdy mounting frame designed for single package units
providing an automatic weatherproof sealed rooftop installation.
This roofcurb is shipped knocked down and must be assembled
on site.
Adjustable roofcurb.
This adjustable and assembled roofcurb is made of galvanized
steel with 2.5 mm. This adjustable roofcurb is designed to be
installed in roofs with slopes up to 4 to 5% in all directions,
enabling FLEXAIR to be compatible with most roof profi les.
Downfl ow roofcurbs are the easiest and the cheapest way to install
packaged air conditioning systems to a single volume building.
The frame can be secured directly to the roof structure thanks
to its built in adjustable fl anges and sealing liner returns
Multidirectional roofcurb
This option is a required when customer wants to have horizontal
return and horizontal supply on the same side.
It is also required with the power exhaust fan or gravity exhaust
damper options combined with horizontal return fl ow confi guration.
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