Dual Pneumatic
I n s t a l l a t i o n , O p e r a t i o n & S e r v i c e M a n u a l
5
www.trioniaq.com
The A-33 assembly (Figure 3) is a single head assembly for
use in restricted areas.
Control Sections
The control sections provide the following features:
• Regulate plant air and water to desired operating pressures
• Monitor the flow of air and water to the heads via
solenoid valves
• Air pressure switch prevents flow of water to heads until
there is sufficient air pressure for atomization
• Dripless operation and automatic purging of minerals
from heads during system cycling
The standard air control sections are available in two
different sizes, and the water control section is available in
one size (see pages 6-7).
Minimum Pipe
Size to Heads
Size
Pipe
Connections
Max.
Capacity
Air
Water
Water
Drain
1/2”
1/2” FPT
240 lbs/hr
3/4”
1/2”
1/2”
3/4”
3/4” FPT Air
1/2” FPT Water
500 lbs/hr
3/4”
1/2”
1/2”
Controls
The standard Dual Pneumatic atomizing system requires
ON-OFF humidistats for operation. Controls may be
provided by others, in which case, consultation with TRION
is essential to ensure proper operation.
Several control options are available from TRION. The
standard system consists of a control humidistat and high-
limit (safety) humidistat. (A hygrometer is optional with any
Dual Pneumatic system.)
For critical applications where extreme tolerances or
temperature and humidity requirement demand it, an
electronic humidistat may be required.
Air Supply
Plant air can be used if supply is adequate. All heads use
12 SCFM of air per 100 pounds of atomized water delivered.
However, a safety factor of 20% should be added for line losses.
Air should run through a minimum of a cyclone type moisture
separator and a 0.5 micron coalescing filter (supplied by
others) to ensure that it is dry and oil-free before it reached
the air control section and the heads.
An air compressor used only for humidification can be
operated at 60-70 psi. No need to run at 125-150 psi, as
this would waste energy.
Water Supply
With any air/water atomization system, any solids in the
water will be distributed into the air during atomization.
Always check the water quality before installing an air/water
atomization system. TRION, or your local lab, can perform
this test for you. The Dual Pneumatic atomizing system is
available for raw and demineralized water supplies. With
your water analysis, you and your TRION/HERRMIDIFIER
representative can determine what, if any, water treatment
is required.
Figure 2. B-13 Head Assembly
Figure 3. A-33 Head Assembly
