Central Fan Catalog

1 INDEXITEMPAGEBLOWERSD ouble Inlet ..47 Duct Blower ..23 General Industrial Material handling ..26, 27, 34, 35 General Purpose-utility ..28 thru 33 Pressure ..27, 34 PVC-Corrosion Resistant ..36, 37, 38 Supply or Make-Up (Roof Top) ..45 FANSA ttic ..11 Bathroom ..15, 16, 18, 19, 20 Ceiling ..20 Darkroom ..21 Duct-In Line ..16, 17, 20, 22, 23, 24, 25 Exhaust, prop..4, 5, 6, 7 Kitchen ..16, 18, 19, 42, 43 Roof, axial up-blast ..BACK COVER centrifugal up-blast ..42, 43, 44centrifugal.

2 16, 17, 40, 41 Sidewall, centrifugal ..16, 42, 43, , NFPA 96 APPROVED ..42, 43 Window (Vent-Axia) ..21 OTHERC hemical resistance data ..38 Curbs, roof ..40, 46 Darkroom (Vent-Axia) ..21 Draft inducers, duct boosters ..12, 13 Make-up air fans ..14, 45 Motor & fan controls ..10 Relief-Supply vents ..46 Shutters & louvers ..8, 9 Static vents ..9, 46 Special Motors ..5, 10 Thermostats ..10 Vibration Isolators ..39 General Ventilation Info ..2 General Motor Info ..3 CCAALLLL FFOORR , distributor and OEMdiscounts are quoted on : Net 30 DaysFREIGHT: Medford, MAGUARANTEE: ONE YEAR against defects in material or workman-ship.

3 We do not assume any responsibilityfor incidental or consequential of terms and conditions; and limita-tions of warranty and liability available SHOWN IN THIS Catalog ARECARRIED IN STOCK FOR IMMEDIATE DELIVERYMANUFACTURERS OFCENTRAL-AIRE Exhaust FansFROM 8 TO 60 INCHES WITH SAFETY GUARDSSTOCKING DISTRIBUTOR FORACMEFANTECHPEERLESSBROANFASCOTJERNLUN DCOOLAIRLAUVENT-AXIADELHINEW YORKAND OTHERSREPLACEMENT PARTSFan BladesElectric MotorsBlower WheelsBlower Shafts & BearingsBeltsPulleysFans & Blowers RepairedWe specialize in engineering practical solutionsto all ventilating direct to our engineering

4 Staff:Phone: (781) 393-44561-800-937-4326 Fax: (781) MYSTIC VALLEY PARKWAY, MEDFORD, MA 02155 PHONE: (781) 393-44561-800-937-4326 FAX: (781) 396-4581 ALLEQUIPMENT IS COMPLETELY ASSEMBLED AND TESTED BEFORE SHIPPINGNEW ENGLAND S LARGESTCATALOG #37 PRICE $ Catalog # # FAN CO., MYSTIC VALLEY , MA 02155 PHONE: (781) 393-44561-800-937-4326 FAX: (781) 396-45812 GENERAL INFORMATIONASSUME: Air @ sea level (.075 lb/ft3), 70 F, 50% RH, in. Hg. This is STP RPM CHANGES & HP REQUIRED1750 to 3500 RPM = 8 x HP1140 to 1750 RPM = x HP850 to 1140 RPM = x HPNOISE, SOUND RATINGS, & SONEST ypical Sound LevelsSonesdBSource140500,000 CFM blower120 Threshold of feeling15011015,000 CFM blowerelevated train; chipping hammer,loud street noise9090*Noisy factory; highway auto3880 Shouting; noisy gathering1060 Average factory.

5 Average restaurant950 Average office140 Quiet home: average auditoriumQuiet conversation30 Whisper10 Sound proof roomThreshold of human audibility0*Max. permissible noise per 8 fan noise is a function of a multitude of factorsthe principal sources are (a) air turbulence (b) mechanicaland (c) vibration. Generally the quietest fan is also the mostmechanically efficient. Because a given fan location charac-teristics dictate audible noise, fan dBA cannot be guaran-teed. However, relative noise levels of fans can be suitablefor considering one fan versus SONE number used in this Catalog is a mathemati-cally derived loudness (sound pressure) value as heard bythe human ear 5 feet from the inlet of the noise source in freeair (no ducts).

6 Under these conditions, 10 SONES is twice asloud as 5 SONES; or 20 SONES is 1/2 as loud as 40 SONES. Thus, SONE NUMBERS can be used as guides forfan noise is a critical factor a more detailed, scientif-ic analysis of the noise source and its surroundings would bedesirable. However, lined ducts, especially near the fan, pro-vide ample sound attenuation for most clean air , to double the loudness (SONES) of a given fan, 13more of the same fan must be Ventilation RequirementsMax.

7 OccupantLoad, (personsCFMC lassificationper )per personor areaEducationAuditorium15015 Classroom5015 Locker Shops3020 RestaurantLounge10030 Dining Room7015 OfficesConference Room5020 Office Space720 Reception6020 Public SpacesLocker Restrooms75 cfm/closetor urinalSmoking Lounges7060 Specialty ShopsAuto Service Salons2525 Clothing & FacilitiesBall Rooms10025 Gymnasiums3020 Ice , FAN LAWSV olume varies directlyNew CFM= Old CFMxNew RPMas speed:Old RPMH orsepower varies asNew HP= Old HPxNew RPMcube of speed:Old RPMP ressure varies asNew SP= Old SPxNew CFMsquare of volume:Old CFMH orsepower varies asNew HP= Old HPxNew CFMcube of volume.

8 Old CFM()VENTILATION OF HOODS & BOOTHSC aptureProcessType of HoodVelocityFPMC anopy Hood75 250 Kitchen RangesIsland Hood100 150 Updraft200 250 Plating TanksCanopy Hoods150 250 Slotted Sides1500 2000 Steam TanksCanopy Hood75 150 Paint SprayingOpen Front Booth75 125 FurnacesCanopy Hood100 200 Enclosed Booth150 250 Laboratory BoothOpen Front Booth75 125 KITCHEN RANGE HOODS1. CFM required is length x width (in feet) x velocityas per above table.(Depth of hood does not enter into calculations)2. Hood should extend approximately 12 inchesbeyond front and sides of range.

9 Depth shouldbe two feet or more to accommodate bursts Duct velocity can be 500 to 2000 Two smaller ventilators are recommended inplace of one for more flexible operation and alsoto provide ventilation should one fan ventilators for kitchen rangehoods are radial blade and backward classification YZHW and NFPA 96 providemore PRESSURES(At Std. Density .075# ) WaterFPMIn. PRESSURE LOSSES (in. H2O)No. ofDuct LengthGrease FilterElbows10'20'30'2" on average duct velocity of 1700 OR MAKE-UP AIRU nnecessary loss of summer air conditioningor winter heating can be avoided if 80-90% ofexhaust air is supplied at or near the exhausthood.

10 Make-up air appropriately introducedinto the exhaust hood need not be VELOCITIESM aterialDuct VelocityFPMAir & SmokeResidential500 1000 Public Buildings1100 1500 Industrial1500 2000 Kitchen Hood500 2500 Fine Dry Dust2500 3500 Coarse Dust, Sawdust3000 4500 Large Particles, Moist Material4500 & Up()()()ROOM SONES dBA CORRELATIONS ound Level dBALoudness, Sones323 Catalog # FAN CO., MYSTIC VALLEY , MA 02155 PHONE: (781) 393-44561-800-937-4326 FAX: (781) 396-45813 TYPE OF MOTOR USUALLY REQUIREDThe great majority of small motors (1 2HP & smaller) are 115 voltssingle of 3 4to 11 2are fairly divided between 208/230 volts singlephase and 208 to 550 volts 3 of 2 HP and larger are generally three phase as they are lessexpensive and less troublesome than single phase INFORMATIONC entral Fan Co.