HHFLEX E DECEMBER 2020

12 systemair
HHFlex air handling units
Plate exchanger
Heat wheel
Indirectly driven fan
Fans
Systemair has a wide range of indirectly driven fans.
The V-belt drive has a simple, single-point tensioning
device. The wide range can be divided into fans and
motors that are available in 1 or 2 speeds or suitable for
frequencyinverter.
The motors used comply with the most recent ErP-
directive motor fan combination and comply with IEC
standardefciencyclassesIE2,IE3orIE4.Thereare
variouscongurationspossibleforfansandmotors.In
addition, the entire set-up is provided with steel spring
anti vibration mounts and is maintenance friendly.
Heat recovery wheels
Systemair has three types of heat wheels in its range,
namely condensation, hygroscopic and sorption rotors.
Allthreesupplyanefcientformofenergyrecovery.The
casingoftheheatwheeltstightlyontothecasingofthe
air handling unit and is corrosion-resistant.
There are also various possible build-in constructions.
Therequiredhumidicationcapacityandmechinal
cooling can be reduced (up to 80%) if the sorption rotor
is used. The section in which the heat recovery is located
canbettedwithsimpleinspectionspaces.Thisresults
in maintenance-friendly air handling units.
Plate exchangers
Inairhandlingunitswhereseparateairowsarerequired,
it may be necessary to use a plate heat exchanger.
Plate heat exchangers can be delivered with a standard
orhighlevelofefciency.Therearetwoversionsofthe
plate heat exchanger. The heat recovery is controlled
by a built-in face and bypass damper. The bottom of
airhandlingunitswithplateexchangersisttedwith
stainless steel draintrays on both the inlet and outlet side
as standard.
All of the HHFlex functions in an overview