FSL - flaps for snow load requirement suitable for DVV smoke and heat extract fans
Smoke and heat extract unit DVV with FSL flaps as accessories has the same rating as the basic unit, but snow load rating SL 1000. DVV with FSL flaps is suitable for installation on not heated buildings with snow load requirement SL 1000.
SL 1000 according to EN 12101-3
400°C/120min (F400) or 600°C/120min (F600), depends on basic DVV fan
Up to 120°C continuous operation
Flaps made from magnelis steel sheet
Vertical exhaust
Tested according to EN 12101-3 at TU Munich
Recommended to order factory mounted on the fan (saving place for transportation, saving time and costs for mounting on site)
It can be mounted after installation of fan, too
FSL flaps for DVV-XS, XL, XM, XP/F400, F600 can be mounted on the fan fitted with outlet silencer HSDV, too.