50
The fresh air inlet section must be at least 4 times bigger than the air outlet tube section.
Note:
The fresh air inlet section is equal to the section through which the air can flow without
resistance due to the bars or grille installed in the inlet. Take into account that the bars or grille can
often represent a big part of the inlet section.
3.2.2 Output pipe
Although the appliance has two dryers which operate independently, there is only one steam output.
The appliance has an output which may be connected directly upwards (advisable) or, if this is not
possible, using a 90º L-bend to the back.
Option 90º L-bend
Option directly upwards
Moist air must be channelled to the outside using the connection of a pipe with a net
diameter corresponding to the outer diameter of the steam outlet tube, located on the bottom
back part of the machine. The extraction air must be taken to the outside of the work place and
must never be connected to other chimneys already in use that extract smoke from other fuels.
The location of these conduits must be under the limits established in environmental thermal
legislation. A tube made in temperature resistant material must be used (150 ºC). Never leave the
tube very near inflammable materials or materials susceptible to deformation from excessive
temperatures.
The tube must be smooth inside. It is important that there are no elements in the way of the air
path or that might accumulate fluff (bolts, rivets...). Systems for the periodic inspection and
cleaning of the conduits must be foreseen.
The output pipe should be as short as possible. The load loss should not be more than 100 Pa
(approx. 10 metres and 3 L-bends at 90º) and there should be a slope of 2% towards the outside
in the horizontal sections, to prevent condensation from returning to the machine.
Note:
For facilities with more linear metres of pipeline and/or more elbows consult the
technical service
. It may be necessary to increase the diameter of the pipeline or even
install in the facility an auxiliary vacuum.
