Equipment Information
Air Mover
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Air Mover Classes
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Class 1 – Ensure air movement across all wet surfaces (as little as one per 300 sq. ft. to one per 150 sq. ft.)
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Class 2 – One air mover per 50-60 sq. ft.
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Class 3 – One air mover per 50-60 sq. ft.
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Regardless of class, ensure air movement across all wet surfaces.
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Air Mover Installation
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Clockwise rotation at 45 angle touching wall.
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Inlet towards wall.
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Turbulence air flow.
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One for every 10-14 linear feet of wall space (more applicable for in place drying)
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Dehumidifier
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Determine cubic feet first (cubic feet = length x width x height) When determining amount of dehumidification necessary, you must first consider cubic feet in the affected area.
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Types of dehumidifiers
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Refrigerant and standard refrigerant (Works to 35 degrees, 35-40% relative humidity out)
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Low Grain Refrigerants (Works to 28-33 degrees, 20% relative humidity out)
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Desiccant Dehumidifiers (Works to below freezing, 0% relative humidity out)
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Determine type of water loss
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Class 1 – no carpet and pad
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Class 2 – carpet and pad
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Class 3 – Carpet and pad with water from above or water more than 24“ up walls
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Class 4 – Specialty focus on bound water
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Refrigerants: Cubic feet/Flow chart = AHAM pints necessary
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Desiccants: AEH x Cubic feet/60 = CFM of process air necessary
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General rule: Large room-One refrigerant dehumidifier per 4 air movers. Multiple Small Rooms-one refrigerant dehumidifier per 2 air movers.
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Pint Removal: CFM x Grain Depression 71 = pints