Negative, Positive Air Pressure Applications (small or large spaces), storm, earthquake, tornado, hurricane, bomb shelter

Ducting features, Flange, Elbow Flex Hose Adapters for Negative, Positive Air Pressure Applications (small or large spaces), storm, earthquake, tornado, hurricane, bomb shelter

Positive Pressure

• The positive air configuration draws in the indoor air by the top of the unit and blows clean air out by the bottom.
• This system can be used to bring outdoor air through the air cleaner and create positive air pressure in the interior space.
• This pressure forces the contaminated indoor air out and replaces it with cleaned outdoor air.
• The positive air configuration is used in the Air Handler central air systems and may be used to feed clean air into a heat exchanger or air duct.

Negative Pressure

• The negative air configuration draws the contaminated air in through the bottom of the unit and blows it out through the top.
• This system can be used to move contaminated air from indoors to outdoors through the air cleaner and create negative air pressure in the indoor space.
• This pressure draws outdoor air into the interior to replace the extracted contaminated air.
• The air cleaner cleans the contaminated indoor air before releasing it outdoors to avoid creating outdoor pollution and to conform with environmental regulations.

Alternative power: 4000, 5000, 6000, 8000 series can be powered off a power inverter (hooked up to a battery).

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Air filtration to bring outside air in to a 20 ft square underground tornado shelter

"I am looking for some sort of air scrubber or filter to bring outside air in to a 20 ft square underground tornado shelter with 8ft ceiling. I need to filter outside air and clean inside air for 6 people for several days if need be when used as disaster shelter."

A positive pressure set up like the illustration below using a 6000 EXEC model (http://www.allerairsolutions.com/6000prices.html)



http://www.allerairsolutions.com/pos_neg_pressure.html

Can be powered off a battery with the help of a power inverter same as used in RVs and cars.