Defensor Mk4 Manuel page 24

2.5 Recommendations for arrangement of ventilation ducts
2.6 Installing the steam distribution heads
2.7 Steam piping
min. 5 %
min. 5 %
24
- The ventilation duct near the humidification path should be made watertight.
- The ventilation duct should be insulated if the surrounding air is cold, so that the
humidified air does not condense on the duct wall.
- Unfavourable flow conditions in the ventilation duct (e.g. due to obstacles, small
radii, etc.) can lead to condensation of the humidified air. In the event of
questions concerning the layout of ventilation ducts in conjunction with steam
humidifiers consult your Defensor supplier.
- A sufficiently large control opening should be provided in the ventilation duct
to simplify fitting and for control purpose.
- Steam distribution heads must not be mounted to round ducts.
If you have questions relating to the dimensioning of ventilation ducts in combina-
tion with steam humidifiers, contact your Defensor supplier.
Detailed information on the installation of steam distribution heads can be found
in the separate "Mounting Instructions for Steam Distribution Heads 81-...".
Use original Defensor steam hose exclusively. Other types of steam hoses can
cause undesired operational malfunctions.
min. 20 %
Instructions for the hose layout
- The hose layout depends on the position of the steam distribution head:
- Steam distribution head is mounted more than 300 mm above the top edge
of the humidifier: initially, lead the steam hose with an upslope of at least
20% over a minimum height of 300 mm, then lead the hose with a
minimum upslope of 20% and/or a minimum downslope of 5% to the
steam distribution head.
min. 20 %
- Steam distribution head is mounted less than 300 mm above the top edge
of the humidifier: initially, the steam hose is led with an upslope of at least
20 % over a minimum height of 300 mm above the top edge of the
humidifier and then down to the steam distribution head with a minimum
slope of 5 %.
- The steam hose should be kept as short as possible (max. 4 m) while observing
the minimum bend radius of 300 mm.
- Reductions in the cross section such as kinks should be avoided throughout the
entire length of the hose. The installation of a stop cock in the steam hose is not
permissible.
- Steam hoses must be prevented from sagging (condensate pockets); if
necessary, support with pipe clamps, trough, or wall brackets.
- When deciding on the length and layout of the hose, it should be noted that the
steam hose may become somewhat shorter with progressive ageing.
Securing the hose
The steam hose must be secured to the steam distribution head and humidifier steam
outlet by means of hose clamps.