Product sheet
Operation and MaintenanceFlexomix EXP
2015-01-07 IV Produkt’s continuous product development may give rise to specification changes without prior notice. 1 (2)
Integral attenuation (dB)
Octave band
intermediate
frequency (Hz) 63 125 250 500 1,000 2,000 4,000 8,000
Damping (dB) 6 7 6 5 7 10 15 18
Plate heat exchanger (code EXP)
The EXP plate heat exchanger is a complete unit with a
plate exchanger which uses heat transfer according to
the air-air principle.
The purpose of the heat exchanger is to recover heat
from the extract air and transfer this heat to the supply
air.
This reduces the output required and the energy use.
The heat exchanger is a cross-flow unit constructed
from aluminium plates which are also available with an
epoxy finish. Smooth ducts in the direction of airflow
provide a low pressure drop and minimal risk of dust
building up.
A faulty heat recovery function through reduced recov-
ery efficiency entails increased energy use. This also
means that the planned supply air temperature will not
be attained when outdoor temperatures are low.
Possible reasons for reduced recovery efficiency could
be the fouling of the heat-exchanging surfaces, the
bypass damper not closing completely, or the extract
air filter being dirty.
At low temperatures the extract air humidity is precipi-
tated. The condensate is collected in a drip tray with a
drainage connection. The humidity precipitation also
means there is a risk of ice forming in the exchanger.
The formation of ice is counteracted by some of the
outdoor air flow being bypassed past the exchanger.
Particular attention should be paid to any ice forming
in the extract air section of the heat recovery unit. If
operation problems caused by ice forming occur, the
function of the frost protection equipment on the heat
recovery unit should be checked.
The bypass and shut-off dampers are of KJS type in
tightness class 2 in accordance with SS-EN1751 (VVS
AMA-98) and corrosion class C4 in accordance with
SS-EN ISO 12944-2.
Technical data, sizes 060–600
Configuration
Drainage
Connection = Ø 20 mm
Damper
1 damper motors are required (damper shaft 12×12 mm).
Size Required torque (Nm)
060, 100 3
150 4
190, 240, 300 5
360 6
480, 600 10
