Unified Brands VENTILATION SYSTEMS Calculating And Recording Air Movement, Exhaust, Supply

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CALCULATING AND RECORDING AIR MOVEMENT

1.) Cubic feet per minute or CFM'S is the total area multiplied by the average feet per minute.

A:		CFM
	AREA		FPM

B:CFM = AREA x AVG. FPM FPM = CFM ⎟ AREA AREA = CFM ⎟ FPM

2.) AREA is the length of the opening multiplied by the width in inches. Divide the total by 144 to get the total square feet (area).

EXHAUST

A:Filter Hoods - Area = *Square Feet x Quantity of Filters

*16 x 20 Filter = 1.75 Square Feet

*20 x 20 Filter = 2.25 Square Feet

B:Extractor Type Hoods - Area = **Square Feet x Quantity of Modules

16” Standard Module

**Low Volume Extractor w/3" Slot = .32352 Square Feet **High Volume Extractor w/4" Slot = .43136 Square Feet

9” Standard Module

**Low Volume Extractor w/3" Slot = .1855 Square Feet **High Volume Extractor w/4" Slot = .2473 Square Feet

C:Water Wash Hood - Area = Length of Slot x Width of Slot in inches and divided by 144 for square feet.

SUPPLY

A:Perforated Supply Air Panels - Square Feet of Panel x .4 = Area.

B:Register Type Supply Air Panels - Square Feet of Panel x .7 = Area.

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Contents VENTILATION SYSTEMS OPERATORS MANUAL1055 Mendell Davis Drive Jackson, MS 888-994-7636,fax avtecind.comTABLE OF CONTENTS VENTILATOR FEATURES AND ACCESSORIES Air Adjustment BafflePERIODIC MAINTENANCE G. Fusible Link Replacement1I. TYPES OF SYSTEMS Installation shall be in accordance with NFPA NOTE Welds must not impede operation of damper Page Page Fig 8a Fig 8b 9.Terminal Block #11 TB-11has three 3 pairs of terminals. The first pair of terminals are low voltage connections for the detergent low level probe. The probe should be installed in the detergent container so that it does not protrude above the top of the detergent pump inlet strainer. fig. #9 This is intended to prevent cavitation of the pump and will advise when the tank needs to be refilled. The probe rods may be cut to facilitate a neat and effective installation Terminal Block Designation For authorized sevice techinician use onlyError! Not a valid link Page VI. OPERATION vac as long as the START Button is depressed a. Fan Start b. Setting the PAWS d. Reviewing The Daily Event Schedule OFF/WASH Page l. Detergent Pump and Tank Refer to fig E. Fire Dampers 1. Fusible Link Type fig. 3. Slot-TypeInternal Air Make-Up D. Grease Collection Receptacle A. PAWS PANEL - ELECTRICAL B. VCW PANEL - ELECTRICALC. PAWS/VCW PANEL - PLUMBING ITEM NOD. EVAC DETERGENT E. ELECTRO - MECHANICAL DAMPERITEM NO DESCRIPTIONF. FUSIBLE LINK DAMPER G. HOOD CANOPYITEM NO AVTEC PART NOCleaner/Degreaser Cleaner/DegreaserFor Exhaust Ventilator Auto-washCleaner UNIQUE, POWERFUL CLEANING FORMULAAIR MOVEMENT RECORDINGS Project NameA. ENERGY AIRE HOODS - EXHAUST B. FILTER HOODS - EXHAUSTPage SUPPLY CALCULATING AND RECORDING AIR MOVEMENTEXHAUST AVTEC SERVICE AGENCY, CALL OR WRITE TO FOR THE NAME AND LOCATION OF THE NEAREST