Nortec AIRFOG Series - Manual (Page 7)

AirFog Installation Manual | 3
Compressed Air
Nortec AirFog systems use compressed air as the control fluid. Compressed air is provided by a
compressor (supplied by others) or series of compressors. The modular approach to the Nortec
AirFog systems permits the designer to consider the cost implications of using multiple smaller
horsepower compressors rather than one very large compressor. By using a multiple
compressor design solution, system reliability is increased, maintenance is possible without
shutting down all zones, and capital cost is often reduced.
It is recommended that air free of oil and moisture (control quality air) be used with AirFog
systems. All air compressors will produce moisture, which must be removed using a
refrigerated air dryer. Excessive amounts of water in the air lines will reduce nozzle
performance, and in extreme cases will prevent the nozzle from producing any mist. Oil must
also be removed from the compressed air through the use of oil removal filters.
Air pressure loss can be managed by reduction in the air pipe length, elimination of
unnecessary elbows, valves and flow restrictions, increasing the diameter of the primary
delivery pipe to the zones and elimination of leaks.
Water Quality
AirFog AFE nozzles are controlled from 316 stainless steel and can be used with potable,
reverse osmosis, and deionized water types. Potable water contains dissolved minerals that will
precipitate out of the water in the form of dust as the water evaporates. These minerals are
usually not harmful to the occupants of a space or to presses such as woodworking , printing,
paper, storage facilities, etc., however, clean area applications such as computer rooms,
electronics manufacturing, laboratories, paint, or fired finish areas may be adversely affected
by mineral dusting. In these cases Nortec recommends the use of reverse osmosis or
deionization systems to reduce the mineral content of the water before it enters the humidifier.
If you have questions regarding the suitability of the water for your application, please contact
the design engineer or your local Nortec representative.
Installation Tools and Equipment
The designer should have already provided drawings of the proposed AirFog humidification
system physical layout. These drawings and parts list should clearly identify the system
components by name and part number, physical spacing, zone identification and comments on
nozzle location and pointing directions.
During installation there will be a requirement to:
 Attach mounting brackets to walls, ceilings or other structures, which may be higher than six
feet off the floor.
 Cut and join copper, stainless steel or plastic pipe using standard plumbing joining
techniques.
 Connect low voltage wiring to the control panel.
 Connect plastic tubing.
 The installer should have all the tools and be certified to perform these plumbing, mounting
and electrical tasks.