Specifications

Page 14 • DRI-STEEM CRUV Electric Humidifier Installation, Operation, and Maintenance Manual
Dispersion:
Selecting the dispersion assembly
location
Installation
High-efficiency Tube option
Dispersion assemblies with the High-efficiency
Tube option are designed to produce significantly
less dispersion-generated condensate and
airstream heat gain, which reduces wasted
energy by up to 85%. These improvements
are accomplished by reducing the thermal
conductivity of the tubes with 1/8" of
polyvinylidene fluoride (PVDF) insulating material
on the outside of the tubes. These assemblies
require careful unpacking, installation, and
handling. If your dispersion assembly has the
High-efficiency Tube option, be sure to read this
section carefully.
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Figure 14-1:
Ultra-sorb with the High-efficiency
Tube option
DRI-STEEM humidifiers operate with several types of dispersion
assemblies for open spaces and for ducts and air handling units.
Dispersion assemblies in ducts and air handling units must be
positioned where the water vapor being discharged is carried off
with the airstream and is absorbed before it can cause condensation
or dripping.
• For each dispersion device, DRI-STEEM documents distances
required for non-wetting to occur. For more information about
absorption non-wetting distances, see the non-wetting tables in
this humidifier's product catalog, available for viewing, printing
or ordering at www.dristeem.com.
• In general, the dispersion assembly is best placed where the
air can absorb the moisture being added without causing
condensation at or after the unit. This normally will be after the
heating coil or where the air temperature is highest.
• Place the dispersion assembly such that absorption will occur
– before the intake of a high efficiency filter, because the filter
can remove the visible moisture and become waterlogged;
– before coming in contact with any metal surface;
– before fire or smoke detection devices;
– before a split in the duct; otherwise, the dispersion assembly
can direct more moisture into one duct than the other.
• When draining dispersion condensate to an open drain, provide
a 1" (25 mm) air gap between the condensate drain piping
and the drain. Locate the gap only in spaces with adequate
temperature and air movement to absorb flash steam; otherwise,
condensation may form on nearby surfaces.
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