HygroMatik DDS20, Руководство пользователя

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Page 31
15.1 Attaching steam pipes
Warning: when installing please observe the following:
• all work is to be done by qualified personnel only.
• follow local regulations.
• Use only steam with a minimum pressure of 0,5 bar and a
mximum pressure of 4 bar.
• Use only steam with no chemical additives.
• Dimension the on-site steam connections (insulated) so
that a steam velocity of 25 m/s is not exceeded.
HygroMatik reco mmends the inst allation o f a shu t-off valve in
front of the steam injection system in order to facilitate any
necessary maintenance work.
Installing the steam pipes
Steam piping must be installed using state-of-the-art methods.
Steam pip ing must be inst alled inclined. They must be fitted
using a suitable pitch and suitable materials. The piping holders
must allow for la teral movement. In more lengthy installations
expansion fittments must be used to avoid expansion stresses.
Warning: Water hammers are dangerous and can cause bodily
harm.
It is necessary to drain off any low angles in order to ensure that
condensate is not drawn alo ng and to avoid wa ter hammers.
Very long steam piping systems must also be drained regularly.
Steam connections must be fitted to the piping upper su rface in
order that condensate is not drawn into the piping system.
The HYGROMATIK steam injection syst em must ha ve a f ilter
installed in front of the system. This is delivered with the system
or is already installed on-site.