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Qouipa< 2uttjjom jaiqqraq *mj mj o'jtui leqt uuuidmba'* tnnip IIJV III |UJUMJ\U| JJCJtJIJOili * ,1[ pjo*ujui o Aiutdva tit o* *utj >{1 ;<> jqi pjetaj ol duiqiou .jjjqi - |i.iri|itn -t jjHOtl ioioai jo |[ -iOUafiiv inr)HjiBng%qi q3u<uqt Hy J(9 ijnJtxqn |J*<] |eu i it iP|itu jo `(Hieq '.>yjpq `tilto J3M0(j JO wm linj lag noA iJojBtro *i3[draoo joj aiu ^ '(Biaoi jo iqdisM psap joj ita| paada--bsjb Sat uado jooj aonpaJ--JOiaafjiy inohijb h ut j2ta jad .(ipedea aaoiu jaS no a uotlBjado ui iou <t ubj uoqn woy jib oi uotpnjiaqo ou \||Ba;ijeid st jjjt|t ieqt pauitaap os ojb dtmunnui pue uBq -joioafjiY' azis qjea joj pai ups vjjjjjjoj--ubj aqi duisnoq -pappc *q o-iuq jepads y `jujaafjty at|i jo usd (Rdi.mud aqi siujoj joi8|iiujy SouBjq (jejj Cjbj<>}[ luapqja v(qdtq s inonue uuojjad >j(>l->afj(Y |tiOH|JBn^ qof |Rnp ai|i s iet|i~tSJ| ; luauiajtnbaa vitoedea jij) ujq.w joib|}Juja \ij\ej3 8 tj^nojtji pue a'fotus'jib jn *oy aajj--it *1900 fauvjado who| taoiotn j*|| jonO[ jo asn stjouaj Ciuidvo joj|ijuja put oujpiyj UtJ J*t3J0U( t||t9j--JJU*|tOJ put* saivuiuiqa -uq^ umiejjdo utj )(* luapuadaput uoijjjjtp pum jo aiurqj isjiqjlqf K ptaq tjeioq pui* jqi qim tvenj* <i jdJtq<H>p jqi atiiBjjq iniJjfuv jq\ uiojj jmt jo noy aqj jsitto tjujijtij jiuih jpmnf) If the tjpe of %ouf opera* (ions or the construction of sour building* requires power tenti/ation-whether industrial, commercial, schools, hotel*, etc.-- Swartwout Airjector gives \ou economyandefficiency combined with pleasing appearance. (t is especially adapted in industry for smoke and fume removal -- on forge shops, galvanizing plants, over pickling tanas, in foundries, beat treating buddings, spray booths, welding shops, pump houses and similar loos- Swartwout engineers an* alyze yourconditions with* util 'obligation -- recom mend the equipment best Miited to give the most utisfactory results. Write, wire or phone for complete information. THE SWARTWOUT CO. - CLEYELANO, OHIO IIUlHrl R#pmaUtlH Ul'fqui 30 YEARS of Sivartivout Engineering Development - Bring you these Features LL Swartwout Ventilators are carefully designed A for lowest possible airflow friction--are *turdil\ constructed of high-grade materials for long life and trouble-free service. Wind Vane--New low-dung design keep* overall height at a minimum. Enhances appearance, given maximum -lability. Sensitive to every wind variation. Body--Modern curved design accelerates exhaust flow. Extra heavy materials for rigidity. Curved back reduces wind re*itance--prevents accumulation of >now or ice. Oversize Outlet--Extra large capacity outlet--10^ extra area assists gravity circulation and suction "pull." Louvres--Remote control adjustment does not conflict with fan operation. Can be locked open or -hut. Bearings--Stainless steel ball bearings, fully enclosed --du-ltight, corrosion-proof--permanently sealed, oilless. Flared Edges--Top and sides of outlet opening flared to divert wind currents and increase suction rapacity. Motor and Fan--Nationally known motors propel cast alumi. num propellers of various styles--'elective foe type of ventila ting job required. Ring mounting prevents back-flow of air. Suxirtwout Airjectorr ore gunmwmf to deliver the c/.m. eapncuv for which tAev ore designed, uhrit in untied according la our mudvm / vour tentilatin/f problem. AfRJECTORS in Sizes and Capacities to Fit Your Needs Three Types of Bases for AIRJECTORS Type P--for Peak Roof \ iv Type S--for Slope Roof Type R For Curb Installation These table* -bow -i/es, rapacities and dimensions of standard \irjeetnr* covering a wide range of require ment*. r.biiet operating fans are recommended when minimum of none i* de*ired. Special Airjectors fur nished if need is not met with a ntandard siae. Void and moisture resistant materials used when service requires. Write for complete detail* and tell us your problems. Teardrop and **Birdwing'* Fans Are Recommended for Quiet Operating MVtJLE PROPELLER FAN AIRJECTORS Air/eetor Number I6H16 20H20 20(119 24H24 10 H 26A 10H28A 30H26B 301126 36H32 36K32A 42H36 (2H36A 48H44 S4HA9 60HSS 60H55A 60H55B 72H55A Capacity 1873 2n9o0o0 ttoo 3663 3830 6100 6873 7200 929S 14133 1ISOO 16300 33730 11300 41300 46300 33000 60000 Speed HP 1723 1725 I72S 1123 1725 * l ' l 20 1 20 < Shipping Wlbt 149 188 260 1I2S U2S 1723 172S 1123 I72S , 1125 1723 1725 1723 i i ` 1 6 (00 u H i1 335 I 745 780 3 1071 3 1303 112S 1125 1725 1725 1 1 3 3 10 1323 1785 2160 fRtl^^(;*, PROPELLER FAN AIRJECTORS 18017 1801" V I8QI70-3 *prd> 20020 2IQ24 24Q24A 30026 -10O28A 30Q28-3 Speedl 2100 (2330 1900 ( 1130 2930 3130 3730 6900 7800 (7500 (5100 1725 nas 1723 1400 1100 - 1123 1123 172S 172.3 1123 1723 noo i 1 | i * 1 j 1 20 1 20 MO 1.10 1.6 * a 167 165 200 2SS 233 410 435 403 DOUBLE PROPELLER FAN AIRJECTORS Aifjeetor Caparily 1 Speed ( *. 18H16-2A 20H20-2A 24H24-2 24H24-2A 2640 3330 4730 6300 I 1725 t . t?2S . 1123 . { 1723 30H28-2 | 8305 30H28-2A 8655 36H32-2 1 11300 36H32-2A 1 14230 36H32-2B | 17050 1125 1723 1 112S 1 1123 < 1725 42H36-2 I2H36.2A 42H36-2B 48H44-2 48H44-2A 1 1 ! 13350 1125 14960 1 112$ 18700 , 1725 28270 1 1125 30S00 1 1125 S4H4A-2B l 41300 l 1723 60H55-2 s. J 39300 i 8S0 . 66H49-2 ! 56000 . 1725 j HP Shipping , X4elht 1 10 1 10 j 16 >j . 183 189 273 283 a 1 j , 1 1j 2j S1 1 2* 2j 3 125 *25 320 590 TM 766 788 793 1015 102S 7*a 3i 10 j 1310 1365 1815 TEARDROP PROPELLER FAN AIRJECTORS 12T12 16TIS 1320 1725 2SOO . 1725 20T20 24T22 24T24 24T24A 2780 l 1125 5300 1725 5610 I U2S 6160 ! 172$ 30T2S 36T32-2* 36T32 8t40 10120 10400 1125 850 112$ 42T36-5 42T36 42T40-2* 42T40 48T44 11T70 850 15510 i 1125 22000 5 S0 23000 , 1125 29500 { 112S 54T49 22000 I 60T53 28600 j Two Prone Ut Fan l 850 850 1 120 V 1 20 'i ` 1* j 4 `l j | 1 | | * | `j < 1 2 2| 3, 1 2 l 119 154 188 253 260 260 400 .720 489 765 7ts 955 945 1071 1305 1363 USHO 003378 Catalog Section B BULLETIN No. 205 * TUG SLUflRTUUOUT COfTIPAnY- CLGVG LAfl D OH IO USHO 003379 THE SWARTWOUT ROTARY BALL BEARING VENTILATOR Note the many superior features of this unusually efficient Ventilator on the following pages... Page b-2 USHO 003380 Compare These Swartwout Rotary Features With All Other Round Type Ventilators Basically Correct Design . . . A---------------------A The object in the design of any gravity operating roof ventilator is to secure the greatest capacity per size of roof opening without an excessively large super structure. To accomplish this it is obvious the dis charge flow must always be with the wind--not against it. Therefore the discharge opening must point in only one direction (of wind travel)--not on all sides at the same time. The rotary design alone fulfills these basic requirements. And only the Swartwout Rotary provides all of the following basically correct and therefore highly advantageous and desired fea tures. 1 - The head revolves at the slightest change in wind direction--always keeping discharge opening in direct line with wind flow--but never permits "spinning" from momentum or centrifugal force. - The diameter of ventilator head is approxi mately same size as rooj opening--(A) not up to twice as large as in some ventilator designs. This makes a neater, more work manlike installation--less expensive to in stall and maintain (less paint expense)--bet ter appearing--exerting less wind resistance, less liable to be effected by storms and high winds (especially desirable when ventilators are installed on stacks)--more sturdier con struction--lighter weight and less roof load. The overall height (B) is low per size venti lator. This has same advantages as noted above--with special emphasis on low erection costs and better appearance. An exceptional short jree air passage through ventilator. (C) The short travel from ventilat or inlet to ventilator outlet reduces friction resistance to the minimum; the jree passage induces greater velocity; together they pro vide large capacity and maintain high effi ciency under all operating conditions. There are no interior baffle plates for the air to negotiate--no sharp turns, backtracking, etc., which retard circulation and reduce capacity--no interior drain pipes (no rain or snow can enter the Swartwout Rotary). See complete construction analysis on pages B-6 and B-7. 6- Maximum utilization of outside wind cur rents by wind play over three-jourlhs of out let area (D)--(three sides of opening out of four.) Also positive "pull" in direct line with discharge. The great importance of this feature will be seen on the following page. Page 6-3 USHO 003381 Superior ^SUCTION** Performance Xolc: The illustrations aiul features mentioned on tins page or any page of this Bulletin are not to be construed as referring to any individual MAKE ot ventilator as compared with the Swartwout Rotary-- but as a comparison of basic designs embodied in the rotary and stationary ventilator principles. Wind Action On Roof Ventilators Tliu winds blowing over and around any roof ventil.ilor have definite measurable effect. Tn an efliciviUlv designed ventilator they substantially increase (he discharge capacity by exerting "pull" or suction mi tlie ventilator which is in addition to natural gravity action. It follows, therefore, that a design which takes the greatest possible advantage of out side wind currents is the more logical, the most efficient, and more economical, giving greater returns for the investment. A study of the sketches on this and the following page will show why the Swartwout Rotary principle utilizes wind action to greater extent than the station ary principle. The design of a round stationary ventilator provides for upward discharge at all points around its entire circumference. No matter which way the wind blows, therefore, it is always blowing against one-half oj the discharge area. This is bound to have a retarding effect on that portion (.Fig. A). True, it may tend to increase the discharge from the opposite area in sufficient quantity to actually show an increased capacity overall--but that does not change the fact of retarded efficiency of shaded area. Contrast this with the rotary principle (Fig. B'. The wind never blows against any part of the dis charge area but always away from it. Thus, increased capacity is secured through suction effect without sacrificing any gravity capacity through retarded dis charge areas. It follows that greater discharge per squarefoot of opening results. This increase in capacity is in direct proportion to outside wind velocity as indicated by capacity tables on page B-U. Now let's analyze the method of "pull" exerted on the respective designs (see following page): ,i 1 I !f,(l i"l j fiqge b-i USHO 003382 The Direct, Positive ##Pull/# of the Swartwout Rotary As illustrated in Fig. C, the Swartwout Rotary discharge is in direct line with outside /low. Small Hares on the sides and top ot' the opening "catch" the wind causing eddy cur rents which set up a vacuum over the entire discharge area. This is a direct and positive high powered "pull" which accelerates discharge and greatly increases capacity. With the stationary design 'Fig. D) the wind blows at right angles- across the top or discharge area. Obviously the "pull" exerted is not comparable in any way with that obtained by the rotary principle. But some will advance that the "pull" on the stationary design is obtained by the wind passing under the side isometimes called a "suction band") and traveling upward between side and outlet stack (Fig. F). Let's analyze this: The Greater Area //Pull// of the Swartwout Rotary It will be noted (Fig. E) that a positive and direct pull is exerted on three sides of the entire discharge area of the Swartwout Rotary--or, at the very minimum, threeJourlhs of the total outlet area. Now, even granting that suction in the stationary design may be secured as per Fig. F, the greatest possible area to be aft'ected would be one-half of the total outlet area--and in no measure the direct pull obtained with the rotary. Figure E--Swarticout Rotary positive suction" exerted on three sides--three-fourths of outlet area. Figure F--Round Stationary Ventilator`'suction" exerted at best on but one^half of outlet area. Page b-5 USHO 003383 Construction Extreme care is taken in the construction of the Swartwout Rotary to produce a product not only superior in performance but superior-built as well-- an exceptionally high quality article--one that will render many years of trouble-free service. On this and the following page attention is called to some of the constructional features which combine to make this quality ventilator. Wind Vane . . . This new design low slung wind vane keeps the overall height to a new minimum--enhancing ventilator appearance and giving maximum stability. It is extremely sensitive to every wind variation, yet holds the ventilator absolutely steady in the wind and prevents any "spinning" from momentum or centrifugal force. Body . .. New curved design with modern lines--gives a very pleasing appearance to the ventilator and provides the ultimate in efficient operation. Extra heavy materials are used with rigid construction as shown on opposite page. No bolts or screws used and ALL SIZES SHIPPED COMPLETELY ASSEMBLED. Oversize Outlet... Designed after extensive experience and research to provide extra large capacity under all operating conditions. Its 30% extra area assists gravity circulation and also gives extra impetus to suction "pull." '"''iv LOUVERS IN ^.VVIDE OPEN ^ POSITION k\ 'V LOUVERS IN COMPLETELY -- CLOSED A iiL^A \I POSITION DUST THROWN ^ON OUTSIDE W OF VENTILATOR Louvers .. . Outside adjustable louver dampers are standard equipment. The effi cient louvers and operating mechanism provides complete regulation of ventilation. On sizes 24" and up three-position louvers are furnished. They can easily be set and locked either wide open or completely shut. When closed, any accumulation of dust, dirt, or lint on the louvers is automatically thrown on the outside of building by their downward and outward tilt. Page b-6 USHO 003384 Interior Members . . . Here is a triumph ot' modern mechanical genius. Three cross braces of elliptical seamless steel tubing are welded to center upright hollow steel shaft--making a one-piece rigid structure of exceptional strength and -- durability. Its strength is attested by photo- ^) graph at lower left. Streamline tubing re- duces friction to the minimum, thus in no wise interfering with capacity operation. Interior members are hot galvanized after assembly. Joints with body are made with heavy gauge .. Close-up of Weld steel stamping shoes and strong steel rivets. Bearings . . . Stainless steel ball bearings in small stamped steel housings, fully enclosed, dust tight and corrosion proof, make a permanently sealed, oilless, troublefree bearing. Sensitive--will not stick. Upper bearing carries the load-- lower bearing, the thrust. Both are identical, with various sizes for various sized ventilators. Curved Back . . . Streamline effect reduces wind resistance to the minimum. Also prevents any accumulation of snow or ice forming on ventilator. Counter Weight. . . Accurately weighted for each size to form perfect balance with extra weight of louvers on front of ventilator. This keeps ventilator in perfect balance at all times. Flared Edges . . . The top and both sides of outlet opening are flared to divert wind currents and increase suction capacity. This is one of the "secrets'' of the Swartwout's large capacity. Just the right curve and depth of flare was only attained after extensive experience and research. Scams All joints are double seamed for strength and rigidity. No bolts used and there is nothing to get_loose and develop leakage. 3 Page 6-7 USHO 003385 Materials Slock ventilators are constructed of high quality: < 11 Galvanized copper hearing steel sheets, <2i Copper sheets. of thickness per size indicated in table below. Interior members are all galvanized seamless steel tubing as described on page B-7. In copper ventilators these members are painted two coats of special acid-resist ing coating for additional protection. Dimensional Detail Ventilators made of special materials such as Asbestos protected metal Aluminum Lead Coated Steel can be furnished to order, but not shipped from stock. Interior members in all instances jvill be standard steel tubing with special painting or with lead coating on special order. Painting For acid and alkali conditions we recommend a special rubber-base coating which forms a tough highly-resistant fdm or skin over the metal for addi tional protection. Two coatings will be applied at the factory for small additional cost. Screened Ventilators Bird screen of standard 4" mesh galvanized wire will be furnished at slight additional cost. It is mounted in front of louvers--not in the throat. It is easily accessible for cleaning, removable for painting, etc. It does not interfere with damper operation or restrict the capacity in any noticeable amount. Screens made of special materials furnished when required at additional cost proportionate to metal used. DIMENSIONS OF SWARTWOUT ROTARY BALL BEARING VENTILATORS Area of Throat A B ! c D E Opening Sq. Ft. 12 114 1 4 7 8 14 13--8 i 5*8 4 7 s 114 44 134 .785 1.069 16 18 174 20 19}4 61'4 67*41 24 231 s 8 lys 30 2Q u 36 34?< 13% 59'4 154 54 164 5% 184 54 194 8% 264 8% 314 1.396 1.767 2.182 3.142 4.909 7.069 42 15% 8% 36 48 463s 17% 10% 41 54 324 19% 10% 47 60 57 7 g 21`4 10% 52 66 65^| 234 10% 57 72 69% 25% 10% 63 9.621 12.51 15.90 19.63 23.76 28.27 Area of Outlet Opening Gauge Iron Wgt. of Copper (Oz.) 1.03 1.39 1.83 2.30 2.84 4.00 6.33 5/v> 12.40 15.92 20.09 24.82 29.93 35.53 24 18 24 18 24 18 24 18 24 18 24 20 22 24 22 24 20 28 20 28 20 ; 28 20 28 20 28 20 28 Net Wght. 20 25 31 42 49 65 120 175 290 370 520 605 710 850 Crated Wght. 27 32 40 53 65 85 170 250 375 495 675 780 900 1100 Code Word Sulciforme Sulcipenne Suleiman Sulfacide Sultatable Sulfatado Sultatage Sulfatamos Sulfataria Sulfataron Sulfateur Sulfatique Sulfate Sultazote Page bS- USHO 003386 r^frQ-trt.66 I P----- Ct-feCUtrA4^4-0-n Capacities of Swartwout Rotary Ventilators There are three factors (exclusive of ventilator size) each varying with the individual installation, which determine the ventilator capacity actually secured on any installation. These are: 1. Ventilator Height . . . or distance between air intakes (windows, doors, or spec ially provided intakes) and ventilator outlets (usually roof height). The greater this distance is, the more capacity will be secured. 2. Temperature Difference . . . between the incoming air (at intakes) and outgoing air (at ventilator). When any great difference exists between out side and inside floor level temperatures (such as Northern States, winter conditions), to estimate ventilator capacities the "temperature difference" should be secured by subtrac ting floor level inside temperature from rooj level inside tem perature. Also it should be borne in mind that the temper ature under the roof bejore opening ventilators is always greater than after they have been in operation for a time, because circulation reduces the inside temperature. The greater the "temperature difference" is, the more capacity wi.l be secured. 3. Velocity of Outside Air Currents . . . As shown on pages 4 and 5, these substantially increase the capacity of the Swartwout Rotary in proportion to their velocity. Naturally you must have a basis for determining what velocity figure to use. The United States Weather Bureau has supplied this information in the form of aver age wind velocities, summer and winter seasons, for all localities in the United States. The complete table is shown on page B-12. Select that point nearest your location and use the next highest whole number to fractional velocity figure given. On opposite page appears a simplified table from which anyone can determine the minimum capacity that will be received from any size Swartwout Rotary under any combination of actual working conditions. Usually a slightly greater capacity will be secured as these figures lean toward the conservative rather than attempting to "see how high they could be made." We invite comparison with other published capacities. Pate b-9 USHO 003387 How To Estimate Capacities On this and the following page, three tables are shown from which can be determined the operating capacity in c.f.m. of any size Swartwout Rotary under practically any given combination of conditions encountered in actual service. Table B-l shows base ratings used in calculations. These base ratings are not to be taken as a general capacity figure because they- do not take into consideration height, temperature and wind factors. Table B-2 shows height factors with height of ventilator to be ascertained as indicated on preceding page. Table B-3 shows outside wind velocity factors. As wind velocity has different accelerating effects in relation to height and temperature factors, it will be noted a different wind factor must be used for the same velocity for different height and temperature factors. To determine capacity proceed as follows: Multiply base rating (from Table B-l) by height and tempera ture factor (Table B-2), multiply result by wind velocity factor (Table B-3). The result will be capac ity in c.f.m. for the given condition. Prevailing wind velocity can be secured from Table B-4. Example: Find capacity of 60" Swartwout Rotary installed on roof 55 feet above inlets with average temperature difference of 35 located at Washington, D. C., for summer ventilation. 7,459 x 1.62 x 1.16 = 14,016 c.f.m. In determining wind velocity factor it is assumed ventilators are located in free air--not back of obstructions such as other buildings, walls, monitors, stacks, etc. It is the free direct pull of the wind which gives the Swartwout Rotary a tremendous advantage. Size 12" 14" 16" 18" C. F. M. 298 407 532 673 Size 20" 24" 30" 36" TABLE B-1--BASE RATINGS C. F. M. 828 1193 1*62 2687 Size 42" 48" 54" 60" C. F. M. 3656 4777 6042 7459- Size 66" 72" C. F. M. 9025 10743 j`l jj !, }J i| \\ ! Page b-tO USHO 003388 TABLE B3 -- WIND VELOCITY FACTORS Wind Velocity In Miles per Hour .38 .39 3 1.30 o , 1.50 " i 1.82 9 1 2.14 ii : 2.47 TEMPERATURE AND HEIGHT FACTORS 1 .40 .42 | .44 .46 .48 .50 .52 .41 .43 ! .45 .47 ...49 .51 .53 1.28 1.48 1 1.78 i 2.10 1 2.43 . 1.27 1.46 1.75 2.06 2.37 ! 1.26 1.44 1.72 2.02 2.32 1.25 1.43 1.69 1.99 2.28 1.24 1.41 1.66 1.96 2.23 1.23 1.39 1.63 1.93 2.19 1.22 1.38 1.61 1.89 2.16 .54 .55 1.21 1.36 1.59 1.87 2.11 .56 .57 1.20 1.35 1.56 1.84 2.08 .58 .59 1.19 1.33 1.54 1.81 2.04 Wind Velocity In Miles Per Hour 3 5 7 9 11 .60 .61 1.18 1.32 1.52 1.78 2.02 .62 .65 1.18 1.31 1.50 1.76 1.98 TEMPERATURE AND HEIGHT FACTORS .66 .69 1.17 1.29 1.47 1.71 1.93 .70 .73 1.16 1.27 1.43 1.67 1.87 .74 .77 1.14 1.25 1.41 1.63 1.82 .78 .81 1.13 1.24 1.38 1.59 1.78 .82 .85 1.12 1.22 1.36 1.55 1.73 .86 .89 1:11 1.21 1.34 1.52 1.69 .90 .93 1.10 1.20 1.32 1.49 1.66 .94 .97 1.10 1.19 1.31 1.46 1.62 .98 1.01 1.09 1.18 1.29 1.44 1.58 Wind Velocity In Miles Per Hour 5 5 7 9 11 1.02 1.05 1.08 1.17 1.28 1.41 1.54 1.06 1.09 1.08 1.16 1.26 1.39 1.51 1.10 1.17 1.07 1.15 1.25 1.37 1.49 TEMPERATURE AND HEIGHT FACTORS 1.18 1.25 1.06 1.14 1.23 1.33 1.44 1.26 1.33 1.04 1.13 1.21 1.31 1.40 1.34 1.41 1.03 1.11 1.19 1.29 1.37 1.42 1.49 1.03 1.10 1.17 1.27 1.35 1.50 1.57 1.02 1.09 1.16 1.25 1.33 1.58 1.73 1.02 1.08 1.16 1.24 1.32 1.74 1.89 1.01 1.07 1.14 1.22 1.29 1.90 2.05 1.00 1.06 1.13 1.20 1.27 2.06 2.30 1.00 1.06 1.13 1.20 1.26 Stcarttcout Rotaries on a prominent Dairy in Chicago, Illinois Page b-11 FJSHO 003389 AVERAGE WIND VELOCITIES COMPILED FROM U. S. WEATHER BUREAU RECORDS State City | Average | Wind 1 Velocity Summer Prevailing I Wind 1 Direction Summer Average Wind Velocity Winter J Prevailing Wind Direction Winter Ala. Ariz. Ark. Calif. Colo. Conn. D. C. Fla. Ga. Ida. III. Ind. Iowa Ky. La. Maine Md. Mass. Mich. Minn. Miss. Mo. Mont. Nebr. N. J. N. Y. N. M. N. C. N. Dak. Ohio Okla. Oreg. Pa. R. I. S. C. Tenn. Texas Utah Vt. Va. Wash. W. Va. Wise. Wyo. Birmingham.. Mobile.................. Phoenix Little Rock.................. Los Angeles... San Francisco............... Denver.. .. .. Xew Haven . . Washington.......... Jacksonville........ Tampa............... Atlanta............... Savannah...................... , Boise........... ......... Chicago............................. Peoria............................... Indianapolis.... .. Des Moines ......... . New Orleans................ Portland........................... Baltimore................ ....... Boston............................... Detroit.......................... Minneapolis...... Vicksburg...................... Helena............................... Lincoln........... ................ Reno.................................. Trenton............................ Albanv.............. Buffalo........................... New York....................... Santa Fe........................... Asheville........................ Wilmington.................. Bismarck.......................... Cincinnati....................... Oklahoma City.............. Portland........................... Philadelphia.................... Pittsburgh........................ Providence..................... Charleston.................. Chattanooga................ .. Memphis........................ Dallas............................... Houston............................ San Antonio.................... El Paso............................ Salt Lake City................ Burlington...................... Norfolk ........................ Richmond......................... Seattle............................... Spokane............................ Parkersburg..................... Milwaukee...................... Cheyenne......................... 5.2 8.6 6.0 7.00 6.0 11.0 6.8 7.5 6.2 8.7 7.0 7.5 7.8 5.8 10.2 8.2 9.0 6.6 8.0 7.0 7.5 6.9 9.2 10.5 8.4 6.2 9.5 9.4 7.5 9.5 7.4 10.0 7.1 12.2 12.9 6.5 5.6 7.8 8.8 9.9 6.6 10.1 6.6 9.7 9.0 10.0 9.9 6.5 7.5 9.4 7.7 7.4 6.9 8.2 8.9 10.9 6.2 7.9 6.5 5.3 10.4 9.2 s sw w " NE sw SW S s s sw E NW SW NW NE S SW sw sw sw s sw sw sw SE sw s sw sw s w sw s sw sw SE SE SW NW s sw s NW SW NW NW SW SW SW S S SE E SE S S SW S SW SE S S 10.4 6.4 8.7 6.3 7.6 7.5 9.7 7.1 9.2 12.1 9.5 12.5 11.5 9.9 8.8 9.2 7.8 11.2 12.7 11.5 8.5 11.6 10.5 8.1 17.2 17.1 7.8 8.5 9.1 15.0 12.0 7.5 11.0 11.7 12.8 10.6 9.7 8.0 10.4 6.7 11.8 12.5 7.9 11.5 7.1 7.5 11.5 N N E NW NE N s N NW NE NW NW W sw SW N NW NW W SW NW SE s S s w NW NE SW NW SW 'N S NW W NW SW S NE NW SE S N SW SE SW SW W Page b-12 USHO 003390 Crating and Shipping Information Sizes 12" and !4" are packed in heavy corni Hated paper cartonsfor shipment 111 Swartwout Rotaries are shipped completely assembled ready for erection. Their compact design, permitting less over-all dimensions, makes them less bulky and lighter than certain other types--thus saving transportation charges and facilitating hand ling. The larger sizes are securely packed in strong wooden crates as illustrated and smaller sizes shipped in corrugated wooden cartons. Unless otherwise specified, L.C.L. shipments where Large sheRotar- possible will be made via Universal or National Car ies, IS" and up loading Companies. Express and truck shipments are shipped se- w;jj be maJe when specified, cure/v packed in wooden era tes as pictured at left. Installing the Swartwout Rotary It is often possible to effect a substantial saving in the erection cost when Swartwout Rotaries are in stalled in comparison with other types. This-is due to their light weight, compactness, ease of handling, and completejaclory assembling. There is no assembly or fitting of the ventilator parts together on the job. Erection is quicker, easier, and cheaper, and is an item which should be carefully considered when com paring two or more contemplated installations. The Swartwout Company does not do the installing itself as it can generally be done with less expense by local labor. Any mill maintenance crew, or good com mercial sheet metal contractor can handle the job without difficulty. For ease of hoisting to the roof large size rotaries are fitted with hoisting hooks on side. Maintenance One of the advantages in installing the Swartwout Rotary is that it requires no maintenance except (when galvanized iron is used) ordinary periodical painting. No lubrication is necessary. Painting galvanized iron every two to three years (in accord ance with the service conditions) with good metal paint is recommended as that will prolong the life of any metal. When desired, a periodic inspection of your Rotary installation will be made without charge by a Swartwout Representative who will report to you any suggestions or recommendations tor possible improvement in your ventilation. Page brl3 USHO 003391 1 - n T-RagFtrt 6 >-^=lt-ft-=et-RC U-trPm-O-n --== Swartwout Bases Type P For Peak Roof Type S For Slope or Flat Roof Type R For Curb Installation Why it is more advantageous to use the combination of SWARTWOUT ROTARY AND SWARTWOUT BASE The same mechanics who construct the Swartwout Rotary Ventilator naturally are qualified to a greater degree than others to construct the base. They are familiar with every small detail of construction--have exact dimension patterns to work from--and having built thousands, can make a perfectly proportioned, evenly balanced base that's a perfect match with the ventilator. Then, too, in using a Swartwout Base you are assured of the proper construction--a base designed by the same engineers who designed the ventilator. You secure the proper gauge metal (two gauges heavier than the ventilator), the proper shaping, the oversize roof opening, and a perfect roof fit. Thus, while you may be able to secure commercial bases for a few dollars less, the slight saving is more than offset by the chances you take on securing an inferior product and a misfit combination. Don't jeopardize your ventilator investment by attempting to save a few dollars in the cost of the bases. Swartwout supplies them at as low a price as possible for anyorie to supply products of equal high quality. CONSTRUCTION Three different types are furnished as here illustrated. Types P and S are made to exact pitch of roof. Type S is also used on flat roofs where curb construction is omitted. Type R can be used on slope where curb construction is desired. "Hold down" or anchor straps are standard con struction on Type R base; and can also be furnished on other types by special order. Lead flashing can be fur nished for installations on corrugated roofs, at slight extra cost. Page b-14 USHO 003392 i TT TifUD LLee-^=|-|-R: --CI4^U-trPWT4-Q-n --=- Detail Analysis Top of collar absolutely level and true round. Lap of l" or over. Collars are grooved and strongly riveted to body of base with 5" spacing of rivets. Cannot spring apart. Bases built square to round--giving oversize opening in bottom. See exact dimensions below. Galvanized steel tivo gauges heavier than ventilator size for size--is standard construction. Condensation gutters can be furnished on special order for installations where excessive humidity may cause dripping and resultant damage. Five inch flanges accurately bent outward to fit roof pitch. All bases made to exact roof dimensions and fit properly. Heavy anchor straps fur nished with all "R" Type bases -- and with other types by special order. IMPORTANT: When ordering bases always state TYPE desired (P, S, or R) and state pitch of roof. DIMENSIONS ml F5 A 12 14 16 18 20 24 30 36 42 48 54 * 60 66 72 B CD 8 18x18 5 8 20x20 5 8 22x22 5 8 24x24 5 8 28x28 5 11 32x32 5 11 38x38 5 11 44x44 5 13 52x52 7 13 58x58 7 13 64x64 7 16 72x72 7 19 80x80 7 19 86x86 7 E Required Dimension Slope Per Foot Gauge Iron 22 22 22 22 22 22 20 20 18 18 18 18 18 18 Weight of Copper (oz.) 24 24 24 24 24 24 28 28 32 32 32 32 32 32 Aver. Net , Wt. 18 26 35 38 45 00 80 95 120 140 160 200 240 300 Aver. Crated Wt. 20 28 37 40 50 65 95 110 150 170 190 240 290 360 Page b-lS USHO 003393 Typical Swartwout Rotary Installations ji i i, I Prominent Power Plant in the Southwest--Swartwout-equipped Page b-16 USHO 003394 "HI -- BY I .Stcarttcout Rotaries on a prominent paper mill Page b-17 USHO 003395 (Above) This station of the Oklahoma ,\atural Gas Company at Owosso, Okla,T is thoroughly modern in every respect, Sicartwout Venti lators help to make it so, (Left) One of many Cities Service Gas Compressor Stations, Stcortttroitf equipped. (Below) All stations on the Continental Pipeline (Fritch, Texas to Chicago, III.) are Stcartwout ventilated. I i II Ji i Page b-18 (JoHO 003396 Large brass manufacturing plant equipped with Swartwout Rotaries INDEX TO BULLETIN No. 205 Bases ..... Capacities .... Construction Features Design of Swartwout Rotary Dimension Tables Pages . . b-14-15 b-9-10-11 b-6-7 b-5 Rotary .... b-8 Base .... Installations .... Installing Swartwout Rotary Maintenance .... b-lo . b-11-16-17-18 b-13 b-13 Materials .... b-8 Shipping Information b-13 Wind Action on Roof Ventilators Wind Velocities .... b-4-5 b-12 USHO 003397 r t Swartwout Engineering Service rendered without obligation Experienced Engineers of this company are at your service without obligation to you, to assist in the proper solution of vour building interior atmospheric problems. They will check your conditions and make recommendations and suggestions for practical solutions with economy. Their years of experience are at your disposal. No matter what the condition or problem-- if it relates to your interior building atmosphere--let us assist you. Write, wire, or phone direct or to nearest district office shown below. THE SWARTWOUT COMPANY.....................CLEVELAND OHIO DIS! it? CT SALES OFFICE t PRINTED IN U. =>. A. USHO 003398 PENNSYLVANIA WIRE GLASS COMPANY 1612 MARKET STREET PHILADELPHIA, PENNSYLVANIA USHO 003.399 The Penglass Stationary Types of Roof Ventilators are manufactured to meet the ever increasing demand for more efficient ventilation and to combine a Ventilating Recommendation Service (without obligation) which reflects the old established company policy of helpfulness, in the interest of plant management, labor and government. Frank L. Martin, President. USHO 003400 "FOR THE DURATION" Roof Ventilation in Government and Industrial Buildings is so important to Plant Management and Labor that, during the restriction on metals, used heretofore in manufacturing Ven tilators, products such as Cypress Wood--Glass--and AsbestosCement Board, are now being used for Ventilator Construction. The use of these substitutes has in no way affected the guaranteed exhaust capacity or required function of the Ventilators. The Pennsylvania Wire Glass Company can furnish Penglass Roof Ventilators manufactured from the above materials. UbHQ 003401 *lke Q OtiiitandUtXf. PeftfovutoOHcei PENGLASS ROUND ROOF VENTILATOR n r 1. A single air outlet over three times the stack area. 2. Accelerator Baffles converting additional suction power of the passing wind. Protection for weather proofness. 3. Special designed Cap Cone furnishes the animated flue effect. 4. An unobstructed Expansion Chamber produces the constant flow of air to the exhaust. 5. The Wind Accumulator Band with specific eco nomical dimensions, produces maximum air move ment at the minimum area displacement. .6 Stationary type having a balanced framework withstanding an eighty mile wind. Cl] SHO 003402 br l-A-l ROUND VENTILATORS--DIMENSIONS--WEIGHTS--GAUGES Dimension*. Inches Size A B C ir 24 23'/i 16" 30 31 20" I 37 38 24" | 36" ; 45 ! 48 62 ! 69'/i *48" | 81 ! 91 *54" j 92 ! 102 1 *60" j 100 1 114 72" j 117 137 *84" j 134 { 159 * Shipped knocked down. Approx. Net Weight Galv. A.P.M. A.P.S. , Approx. Ship. Weight Galv. A.P.M. ' A.P.S. Gauges Galv. A.P.M. or A.P.S. 23 lb. 38 lb. 70 lb. 100 lb. 274 lb. 630 lb. 790 lb. 11251b. 16721b. 2300 lb. 451b. 691b. 100 lb. 158 lb. 355 lb. 780 lb. 9621b. 1390 lb. 1990 lb. 2800 lb. 55 lb. 801b. 133 lb. 180 lb. 490 lb. . 980 lb. j 12541b. | 1695 lb. j 24681b. [ 3006 lb. 80 lb. 114 lb. 180 lb. 2621b. 612 lb. 1217 lb. 16131b. 20471b. 2927 lb. 37791b. - ' ' 24 24 24 24 22 20 20 20 20 18 Standard Flat Damper {or round ventilators is counterweighted to keep in open posi tion -- a chain clip is furnished to hold damper closed -- four feet of chain are furnished with each damper. . . . Butterfly Damper is used in ventilators over all electric power houses, on food prod ucts buildings and on other establishments where a tight fit damper is required. . . . STANDARD BASES--DIMENSIONS--WEIGHTS--GAUGES TYPE no. I FOR RIDGE ROOFS I-- *--I TYPE NO. 3 FOR SLOPING ROOFS I--- A---( TYPE NO. 6 FOR CURBS Dimensions. Inches j APP*. Net WL Lb. I SUpJ^ LJ> Gauge. --- Vy----- Size A Size D | Size E 12" 16" 20" 24" 36" *48" *54" *60" *72" *84" 16x16 21x21 28x28 32x32 45x45 60x60 68x68 78x78 96x96 110x110 10 10 10 10 14 **15 **16 **20 **24 **26 Six* F 4" 4" 5" 5" 6" 6" 6" 6" 6" ;r Galv. 12 25 45 55 110 140 240 300 460 [ 660 A.P.M. 1 A.P.S. 16 30 55 75 140 230 300 380 580 j 770 Galv, A.P.M. ' A.P.S. A.P.M. or A.P.S. 56 64 22 66 77 22 98 111 22 106 120 22 173 200 20 432 495 18 542 618 I 539 627 i 841 968 1 1090 ' 1221 1 18 13 18 16 * Ventilator base shipped in two pieces. Dimension E for Type No. 6 Bases, 48 in. and larger, is one-hall of Dimension A. 0 Roof Opening. 1" less -- each dimension. 'm USHO 003403 HOW TO USE ROUND VENTILATOR CAPACITY TABLES 1. Estimate approximately the cubical contents of building -- the total volume of air in cubic feet. 2. Determine the number of air changes per hour required. See page 9. 3. Multiply the cubical contents by the number of air changes to be exhausted per hour. Divide this total by 60 to get the volume per minute. 4. Decide the number of ventilators to be used. Usu ally one ventilator per bay (where bays are 15-20 ft. in length) is advisable. 5. Divide the volume of air per minute (see No. 3) by the number of ventilators. Result -- cubic feet of air to be exhausted per ventilator. 6. Three variable factors enter in the final selection of the proper size ventilator (1) Wind velocity (to simplify and expedite figuring, we have chosen for our capacity table an average of five miles per hour); (2) Inside and outside temperature differ ence in degrees F.; (3) Height of ventilator above intake (called stack height). Example : 1. Building 60' (width) X 200' (length) X 40' (height) = 480,000 cubic feet. 2. 6 air changes -- 3. 480,000 X 6-M50 = 48,000 cubic feet per minute. 4. 10 ventilators. 5. 48,000 -h 10 = 4,800 c.f.p.m. for each vent. 6. 5 F. Temp. Difference -- 40' stack height -- 5 m.p.h. wind -- size of each vent 54". Vent Size 12" .785 Sq it. 16" 1.39 sq ft. 20" 2.13 sq ft. 24" 3.14 sqft. 36" 7.06 sqft. Stack Height in Feet 10 20 30 40 50 10 20 30 40 50 10 20 30 40 SO 10 20 30 40 50 10 20 30 40 50 Wind Velocity 5 miles per hour Temperature Difference in F. 5 10 20 30 182 205 224 240 254 322 364 397 425 450 510 576 629 673 712 728 822 898 960 1017 1637 1849 2019 2160 2287 205 238 267 292 310 364 422 473 517 550 576 668 750 818 871 822 954 1070 1168 1243 1849 2146 2407 2626 2795 241 292 329 364 392 428 518 583 644 695 677 820 924 1020 1100 987 1171 1318 1456 1470 2174 2633 2965 3275 3530 271 331 381 421 456 480 586 675 746 808 739 928 1069 1181 1280 1086 1325 1526 1686 1827 2442 2979 3431 3791 4108 Vent Size 48" 12.56 sq ft 54" 15.9 sqft 60" 19.6 Sq ft 72" 28.27 sq ft 84" 38.48 sq ft Stack Height in Feet 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 SO 10 20 30 40 50 Wind Velocity 5 miles per hour Temperature Difference in F. 5 10 20 30 2901 3275 3575 3825 4050 3712 4192 4576 4896 5184 4547 5135 5605 5997 6350 6565 7414 8093 8659 9169 8908 10060 10982 11750 12441 3275 3802 4262 4650 4950 4192 4864 5456 5952 6336 5135 5958 6683 7291 7761 7414 8603 9650 10527 11206 10060 11673 13094 14284 15208 3850 4662 5250 5801 6250 4928 5968 6720 7424 8001 6036 7310 8232 9094 9801 8716 10555 11886 13131 14150 11827 14323 16128 17817 19200 4325 5275 6075 6712 7275 5536 6752 7776 8592 9312 6781 8271 9525 10525 11407 9791 11942 13753 15197 16470 13286 16204 18662 20620 22348 IMPORTANT: "ap-icty (able based on building having proper air inlels. Minimum -- Inlet area equal to exhaust area. We recommend 2 X inlet area over outlet area. 131 s X USHO 003404 X ROUND VENTILATOR RECOMMENDATIONS FOR BASE CONNECTIONS To Improve Ventilation and Weatherproofness ! i CORR. METAL ROOFING CORR. METAL ROOFING FOR SIZES 38" TO 84" FOR ADDITIONAL BASE CONNECTIONS SEE PACE 8 4* channel ventilator toddle (welded) by steel fabricator flashIn 9 vontjlotor manufacturer sealing strip tkyliqM manuf. CORRUGATED WIRE GLASS Information When Estimating or Ordering Penglass Ventilator Round Ventilator: What material required. If Bases are needed -- Standard or Oversize; Pitch of Roof; What Roof Material. If base for 36" Ventilator or over, recommend extra Roof Supports (to be fur nished by customer). If Dampers are needed -- Which type; how much extra chain over 4 feet is required; any pulleys or clips. Fan Ventilators: Motor information required; volt age; phase; cycle; D.C. or A.C. If temperature of exhaust fumes is over 105 F., an extra for Class B Insulation of Motor is required up to 150 F. Ridge Ventilator: Pitch of Roof; Roof Material; Extra double chain for damper over 10 feet. In long Ridge Ventilators if any expansion joints are required, there will be an extra charge for ends. In this case see home office. Screens: Bird Screens can be easily installed over the exhaust area of both Round and Ridge Ven tilators. Blue Prints: Secure Blue Prints from steel fabricators and roofing contractors as soon as possible. It expedites furnishing 3teel fabricators with neces sary steel punching. Approval: We require approval of prints before fabrication. Freight: Both the B. & O. and P. R. R. service our plant. 141 r i USHO 003405 FAN VENTILATOR DATA ft2" 1*16" + 16" +16" +20" +20" 24" 24" 24" 06" 36" 48" 48" 48" 54" 54" 54" 60" 60" 60" 72" 72" 84" 84" Fan Size Collar V-Belt Fan R.PJ4. Collar V-Belt 9" +*1600 U" + 1140 14" +1425 14" +1725 18" +1725 i 18" +1425 20" 1725 22" 1425 22" J725 32" 720 32" 1150 42" 850 42" 720 44" 850 48" 850 50" 690 50" 720 ` 54" 690 ; 56" 690 54" 720 66" 575 66" 475 72" 475 72" > 575 Motor Characteristics H.P. Voltage 1/20 1/20 V. v v Vi V, Vi Vi Vi 1 l'/z 1 5 7`/t 5 5 7`/j JVi 7`/j 10 Vh 10 15 110 or 220 110 or 220 110 or 220 110 or 220 110 or 220 110 or 220 220 or 440 220 or 440 ! 220 or 440 110 or 220 ; 220 and 440 220 and 440 , 220 and 440 > 220 and 440 220 and 440 j 220 and 440 ! 220 and 440 , 220 and 440 i 220 and 440 j 220 and 440 j 220 and 440 1 220 and 440 ! 220 and 440 , 220 and 440 Phase 1 -i 1 i i 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 Cycle 60 60 25 60 60 25 60 25 60 25 60 60 25 60 60 60 25 60 60 25 60 25 25 60 [ Height * ' of j Capacity Collar | cXpetn. i 12" 17" 17" 17" 17" 17" 17" 17" 17" 17" 17" 24" 24" 24" 24" 24" 24" 24" 24" 24" 24" 24" 24" 24" 490 1205 1520 1830 3135 2620 4665 4950 5980 7490 11955 19600 16610 27730 35870 33025 34495 41550 46305 43365 62820 51890 67425 81635 'This capacity is figured on the average static pressure in the ventilator plus S miles wind action. The above table is based on the most efficient combination of high speed motors of economical H.P. and rated ca pacities for industrial installation. Where 4000' or less tip speed (silent) is required, consult the home office. Motors for Collar Type have same speed as R.P.M. of Fan. Motor speeds for V-Belt Type are 1725 R.P.M. for 60 cycle and 1425 R.P.M. for 25 cycle, with pulley to reduce to those of fan speed shown in table, fNo V-Belt Type furnished for these sizes. Tip Speed -- Circumference of fan X R.P.M. of fan. Collar Type Fan Ventilator Used in most places where fan power is required. Sim ple and strongly designed fan and motor supporting frame. Inspection door in collar V-Belf Type Fan Ventilator l t Especially recommended for corrosive, excessive heat and1 high humidity installationi. Readily accessible for maintenance and inspectio Explosion proof motors can be furnished for both types of fan ventilator at an extra charge. Fractional horse power motors are 110 or 220 voltage. One horse power, and over, motor can be 220 and 440 voltage. [51 fJSHO 003406 "THE RELIEF" RIDGE VENTILATOR 1. When ventilator damper is in closed posi tion, dirt and snow are kept outside its structure. 2. Unrestricted air flow to exhaust. 3. Damper tension operator out of way -- can be totally enclosed if exhaust fumes are corrosive. 4. To improve ventilation of Ridge Type, lower framework is fitted to any roof having 1% x A (stack) opening. This is standard equipment for small sizes. . [6] USHO 003407 RIDGE VENTILATORS--DIMENSIONS--WEIGHTS--GAUGES Dimension* in inches Size B c 4" 89" ir 18" *24" *36" *48" *60" *72" *84" 7 12 19 26 38 45 65 88 110 125 149 8 14 22 28 42 53 78 105 130 158 180 * Shipped knocked down. Approx. Weights per Lineal Foot Net Galv. A.P.M. or A.P.S. Shipping ] Galv. A.P.M. or | A.P.S. Galv. A.P.M. or A.P.S. 7 H 24 11 ' 15 20 16 21 27 22 26 36 33 43 49 40 47 75 55 70 119 70 89 135 87 109 148 98 126 172 125 160 197 ) 24 32 40 56 83 134 154 180 208 236 24 24 24 24 22 22 22 22 22 22 PERFORMANCE TABLE OF RIDGE VENTILATORS (Figures are all in Lineal Feet Velocity per m.) c 'i Ii /i Y~ A-i SIZE A'--10* I\ /* /\ -- A--j SIZE 24*--84.' Stack height above inlet WIND -- five miles per hour Temperature Difference in F. 5* 10 20 30 10 It. 20 It. 30 It. 40 It. 50 It. 188 LJt.p.m. 218 LJlp.ni. 242 LJt.pan. 262 LJt.p.m. 280 LJt.p.m. 218 LJt.p.m. 260 LJt.p.m. 297 LJt.p.m. 328 LJt.p^n/ .35.^ LJt.p^n. 264 LJtpjn. 329 LJt.p.m. 376 LJt.p.m. 420 LJt.p.m. 456 LJt.p.m. 302 LJlp.m. 378 LJt.pmi. 442 LJtp.m. 493 Lihp^tt. 538 LJlpan. IMPORTANT: Building to hare proper air inlet. We recommend 2 times inlet area over outlet area. In the exhaust table we have taken the outside wind velocity at an av erage of five miles per hour to simplify the use in figuring capacities ol Ridge Ventilators. DAMPER OPERATOR TENSION TYPE Or* Haed Ckale Operator for 100 Foot Donipor L.ngtk. Motor Power coo be *<*d at extra eoit. Example: 1. Building 50' (width) X 250' (length) X 40' (height) = 500,000 c.f. 2. Five air changes. 3. 500,000 X 5 -f- 60 = 41,666 c.f.p.m. 4. 10 F. Temp. Difference -- 40' Stack Height -- 5 m. p. h. wind. Above table gives 328 L.ft. p.m. .5. To exhaust 41,666 c.f.p.m. at 328 L.ft. p.m., roof opening must be 127 sq. ft. 6 We recommend one ventilator 200' long, with a total opening of 127 sq. ft. This will give a ventilator size 127 200 = .64'. 7. The nearest standard size ridge vent is .75' or 9". [7] USHO 003408 RIDGE VENTILATOR RECOMMENDATIONS FOR BASE CONNECTIONS To Improve Ventilation and Weatherproofness m USHO 003409 ! AIR CHANGES RECOMMENDED Type of Building Air Changes per Hour Type of Building Air Changes per Hour Agriculture: Horse Barns Cow Barns Chicken House Brooder House Hog House Foundry Industry: Electric Furnace Pouring Section Shakeout Section Core Oven Rooms Cupola Section Forge Shop: Furnace & Hammer Building Heat Treating Sect. Food Industry: Vegetable Kettles Pressure Cookers Paper Industry: Machine Room Wet End Section Beater Room Digester Bldg. Steel Industry: 4296 cf/hr per horse 3542 cf/hr per cow 4 2 6 Main Mill Bldg. SlaH Furnace Sect. Coil Transfer Bldg. Annealing Bldg. Mesta Pickling (Baffles) 150-200 30-35 Suction Equip. Cont. Pickling Roll Shop Warehouse 40-50 Galvanizing 30-35 Machine Room Utility: 30-40 60-120 Boiler House Based on steam evaporation 100-120 Motor Room Turbine Room Miscellaneous: Based on Tonnage 20-30 20 30 Dye House Glass Furnace Bldg. Laundry Lavatories 30-40 Packing House 5-10 30 115 30-50 60-80 5-10 2 1 (Hood) 75-150 4-6 Special 65-above boiler Based on total K.W. Equipment 5-10 Hood 30 100-150 20-30 15 10-15 In several industries it is necessary before the correct air changes can be recommended that actual operating data is secured. Our ventilator engineers are ready to assist you any time in obtaining the required information without any obligation. USEFUL INFORMATION Area of a Circle =*!= .7854 X D-. 4 Circumference = D X 3.1416. Natural Gas == 1000 B.T.U. per cf. Manufactured Gas = 500 B.T.U. per cf. Blast Furnace Gas = 100 B.T.U. per cf. Fuel Oil = 145,000 B.T.U. per gal. Coal = 12,000 B.T.U. per lb. Fahrenheit = 9/5 Cent. +32. Cent. = 5/9 F. --32. 1 lb. per sq. in. = 144 lbs. per sq. ft. 1 Mile per Hour = 5280 ft. p.h. = 88 ft. p.m. 1/2 Pitch Roof = 12" in 12" Rise. 1/3 Pitch Roof = 8" in 12" Rise. 1/4 Pitch Roof = 6" in 12" Rise. 1. 5 Pitch Roof = 4-4/5" in 12" Rise. 1 H.P. = .746 Kilowatt. 1 K.W. = 1.34 H.P. 1 H.P. = 33,000 foot pounds. 80 Mile Wind = 31.49 lbs. per sq. ft. Sulphuric Acid boils at 590 F. Nitric Acid boils at 242 F. Steel Melting Point, 2600 F. Cast Iron Melting Point, 2200 F. [9 1 USHO 003410 A PENGLASS VENTILATORS W I LI WILL i PENNSYLVANIA WIRE RKET ST., PHILA., PA. USHO 003412 ..... The PENGLASS Stationary Types of Roof Ventilators are manufactured to meet the ever increasing demand for more efficient ventilation and to combine a Ventilating Recommendation Service (without obligation) which reflects the old established company policy of helpfulness, in the interest of plant management, labor and government. Frank L. Martin, President. ! iS USHO 003413 * ti't* *7i4e q Qutitandiwj, Pe^otomancei. PENGLASS ROUND ROOF VENTILATOR 1. t 1 -- yk --------------------------- 2. X3. 4. X 5. 6. 0rd<n | 1. A single air outlet over three times the stack area. 2. Accelerator Bailies converting additional suction power of the passing wind. Protection for weather proofness. 3. Special designed Cap Cone furnishes the animated flue effect. 4. An unobstructed Expansion Chamber produces the constant flow of air to the exhaust. 5. The Wind Accumulator Band with specific eco nomical dimensions, produces maximum air move ment at the minimum area displacement. 6. Stationary type having a balanced framework withstanding an eighty mile wind. I| til J USHO 003414 ROUND VENTILATORS--DIMENSIONS--WEIGHTS--GAUGES Dimensions. Inches SUe A B C 12" 16" 20" 24" 36" *48" 54" *60" 72" 84" i 24 30 37 45 62 81 92 100 117 134 23 >4 31 38 48 69 K 91 102 114 137 159 * Shipped knocked down. Approx. Net Weight Galr. AJJ4. AJ.S. 231b. 38 lb. 70 lb. 100 lb. 2741b. 630 lb. , 790 lb. j 11251b. ! 1672 lb. 2300 lb. 45 lb. 691b. 100 lb. 158 lb. 355 lb. 780 lb. 962 lb. 1390 lb. 1990 lb. 2800 lb. Approx. Ship Weight Gahr. A.P.M. AJ?.S. Gauges Galv. ASM. or ASS. 531b. 80 lb. 801b. 1141b. 133 lb. 180 lb. 180 lb. - 262 lb. 4901b. 6121b. 980 lb. ! 1217 lb. 1254 lb. J 16131b. 169$ lb. 2468 lb. j 3006 lb. 2047 lb. 2927 lb. 3779 lb. ; 1 i 24 24 24 24 22 20 20 20 20 18 Standard Flat Damper for round ventilators is counterweighted to keep in open posi tion--a chain clip is furnished to hold damper closed -- four feet of chain are furnished with each damper. . . . Butterfly Damper is used in ventilators over all electric power houses, on food prod ucts buildings and on other establishments where a tight fit damper is required. . . . STANDARD BASES--DIMENSIONS--WEIGHTS--GAUGES u-u TYPE NO. I FOR RIOGE ROOFS I-- A--| TYPE NO. 3 FOR SLOPING ROOFS I-- A --| TYPE NO. 6 FOR CURBS Size A Dimension*, Inches SixeD Size E SlzeF Approx. Net Wt Lb. Galr. K2M* AJP.S. Approx. Shipping Wt. Lb. Galr. AJJ4. A.P.S. Gauges Galr. ASM. ASS. 12" 16x18 10 ' 4" 12 16 $8 64 16" 21x21 10 4" 25 30 66 77 20" 28x28 10 5" 45 55 38 111 24" 32x32 10 5" 55 75 106 120 36" 45x45 14 6" 110 140 173 200 48" 60x60 *15 6" 140 230 432 495 54" 60" 68x68 78x78 16 20 6" 6" 240 300 300 380 542 I 539 618 627 "72" 96x66 S *24 6" 460 580 841 968 *84" 110x110 i 26 i 9" 660 770 1090 1221 i * Ventilator base shipped in two pieces. * Dimension for Type No. 6 Bases, 48 in. and larger, is one-half of Dimension A. Cp Roof Opening. 1" less -- each dimension. 22 22 22 22 20 18 18 18 18 16 [2] USHO 003415 HOW TO USE ROUND VENTILATOR CAPACITY TABLES 1. Estimate approximately the cubical contents of building--the total volume of air in cubic feet. 2. Determine the number of air changes per hour required. See page 9. 3. Multiply the cubical contents by the number of air changes to be exhausted per hour. Divide this total by 60 to get the volume per minute. 4. Decide the number of ventilators to be used. Usu ally one ventilator per bay (where bays are 15-20 ft. in length) is advisable. 5. Divide the volume of air per minion [see No. 3) by the number of ventilators. Result -- cubic feet of air to be exhausted per ventilator. 6. Three variable factors enter in the final selection of the proper size ventilator (1) Wind velocity (to simplify and expedite figuring, we have chosen for our capacity table an average of five miles per hour); (2) Inside and outside temperature dif ference in degrees F.; (3) Height of ventilator above intake (called stack height). Example: 1. Building 60' (width) X 200' (length) X 40' (height) = 480,000 cubic feet. 2. 6 air changes -- 3. 480,000 x 6 -r- 60 = 48,000 cubic feet per minute. 4. 10 ventilators. 5. 48,000 10 = 4,800 c.f.p.m. for each vent. .6 5 F. Temp. Difference -- 40' stack height -- 5 m.p.h. wind -- size of each vent 54".3 Vent Size Stack Height in Feet 12" .785 sq. it. 16" 1.39 sq. ft. 20" 2.18 sq. it. 24" 3.14 sq. it. 36" 7.06 10 20 30 40 50 10 20 30 <0 50 10 20 3Q 40 50 10 20 30 40 50 10 20 30 40 so Wind Velocity 5 miles per hour Temperature Difference in F. 5 10 20 30 ^ Vent Size 182 205 241 271 i 205 238 292 331 ` 48" 224 267 329 381 , 12.56 240 292 364 421 sq. it. 254 310 392 456 ! 322 364 428 480 364 422 518 586 - 54" 397 473 583 675 1 15.9 425 517 644 746 | sq. it. 450 550 696 808 ; 510 576 677 739 S76 668 820 928 60" 629 750 924 1069 19.6 $73 813 1020 1181 sq. it. 712 871 1100 1280 728 822 898 960 1017 822 954 1070 1168 1243 967 1171 1318 1456 1470 1088 1326 1526 1686 1827 | j | 72" 28.27 sq. it. 1637 1849 2019 2160 2287 1849 2146 2407 2626 2765 2174 2633 2965 3275 3530 2442 | 2979 84" 3431 : 38.48 3791 sq. ft. 4108 j Stack Height In Feet 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 Wind Velocity 5 miles per hour Temperature Difference in F. 5 10 20 30 2901 3275 3575 3825 4050 3275 3802 4262 4650 4950 3850 4662 5250 5891 6250 4325 5275 8075 6712 7275 3712 4192 4576 4836 5184 4192 4864 5456 5952 6336 4928 5968 6720 7424 8001 5536 6752 7776 8592 9312 4547 5135 5605 5997 6350 5135 5958 6683 7291 7761 6036 7310 8232 9094 9801 6781 8271 9525 10525 11407 6565 7414 8093 8659 9169 7414 8603 9650 10527 11206 8716 10555 11886 13131 14150 9791 11942 13753 15197 16470 8908 10060 10982 11750 12441 10060 11673 13094 14284 15206 11827 14323 16128 17817 19200 13286 16204 18662 20620 22348 IMPORTANT: Capacity table based on building haring proper air inlets. Minimum -- Inlet area equal to exhaust area. We recommend 2 X inlet area over outlet area. [3] USHO 003416 ROUND VENTILATOR RECOMMENDATIONS FOR BASE CONNECTIONS To Improve Ventilation and Weatherproofness CORR. METAL ROOFING CORRUGATED WIRE GLASS Information When Estimating or Ordering Penglass Ventilator Round Ventilator: What material required. If Bases are needed -- Standard or Oversize; Pitch of Roof; What Roof Material. If base for 36" Ventilator or over, recommend extra Roof Supports (to be fur nished by customer). II Dampers are needed -- Which type; how much extra chain over 4 feet is required; any pulleys or clips. Fan Ventilators: Motor information required; volt age; phase; cycle; D.C. or A.C. If temperature of exhaust fumes is over 105 F., an extra for Class B Insulation of Motor is required up to 150 F. Ridge Ventilator: Pitch of Roof; Roof Material; Extra double chain for damper over 10 feet. In long Ridge Ventilators if any expansion joints are re quired, there will be an extra charge for ends. In this case see home office. Screens: Bird Screens can be easily installed over the exhaust area of both Round and Ridge Ven tilators. Blue Prints: Secure Blue Prints from steel fabrica tors and roofing contractors as soon as possible. It expedites furnishing steel fabricators with neces sary steel punching. Approval: We require approval of prints before fabrication. Freight: Both the B. & O. and P. R. R. service our plant. [4] USHO 003417 Ventilator Size +12" f 16" tl6" +16" +20" f20" 24" 24" 24" 36" 36" 48" 48" 48" 54" 54" 54" GO" 60" 60" 72" 72" 84" 84" Fan Size Collar V-Belt 9" 14" 14" 14" 18" 18" 20" 22" 22" 32" 32" 42" 42" 44" 48" 50" SO" 54" 56" 54" 66" 66" 72" 72" FAN VENTILATOR DATA Fan R.P*M. Collar V-Belt HJ>. Motor Characteristics Voltage Phase Cycle iI Height of Capacity Collar ci.pjn. fl600 +1140 fl425 f1725 f 1725 +1425 1725 1425 1725 720 1150 8S0 720 650 850 690 720 690 690 720 575 475 475 575 1/20 1/20 Vt v% Y* V< Vi */2 V4 v< 1 IVz 1 5 7Vi 5 5 7Vt 7 Vi 7Vt 10 7Yz 10 15 110 or 223 110 or 220 110 or 220 110 or 220 110 or 220 110 or 220 220 or 440 220 or 440 220 or 440 110 or 220 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 220 and 440 -i i 1 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 60 12" 490 60 17" 1205 25 17" 1520 60 17" 1830 60 17" 3135 25 17" 2620 60 17" 4665 25 17" 4950 60 17" 5980 25 17" 7490 60 17" 11955 60 24" 19600 25 24" 16610 60 24" 27730 60 24" 35870 60 24" 33025 25 24" 34495 ' 60 24" 41550 60 24" 46305 25 24" 43365 60 24" 62820 25 24" 51830 25 24" 67425 60 24" 81635 'This capacity is figured on the average static pres sure in the ventilator plus 5 miles wind action. The above table is based on the most efficient combina tion of high speed motors of economical H.P. and rated capacities for industrial installation. Where 4000' or less tip speed (silent) is required, consult the home office. Motors for Collar Type have same speed as R.P.M.of Fan. Motor speeds for V-BeltType are 1725 R.PM. for 60 cycle and 1425 R.P.M. for 25 cycle, with pulley to reduce to those of fan speed shown in table. +No V-Belt Type furnished for these sizes. Tip Speed -- Circumference of fan X R.P.M. of fan. Collar Type Fan Ventilator Used in most places where fan power is required. Sim ple and strongly designed fan and motor supporting frame. Inspection door in collar. V-Belt Type Fan Ventilator Especially recommended for corrosive, excessive heat and high humidity in stallation. Readily acces sible for maintenance and inspection. Explosion proof motors can be furnished for both types of fan ventilator at an extra charge. Fractional horse power motors are 110 or 220 voltage. One horse power.and over, motor can be 220 and 440 voltage.5 [5] S' USHO 003418 1. When ventilator damper is in closed posi tion, dirt and snow are kept outside its structure. 2. Unrestricted air flow to exhaust. 3. Damper tension operator out of way-- can bo totally enclosed if exhaust fumes are corrosive. 4. To improve ventilationofRidgeType, lower framework is fitted to any roof having l5A x A (stack) opening. This is standard, equipment for small sizes. i \ [6] USHO 003419 RIDGE VENTILATORS--DIMENSIONS--WEIGHTS--GAUGES Dimensions is inches ` Approx. Weights per Lineal Foot 1 Gauges C t--A"i SIZE 4'--10* e PERFORMANCE TABLE OF RIDGE VENTILATORS (Figures axe all in Lineal Feet Velocity per m.) /\ t\ h-a--i SIZE 24'--04* Stack height inlet 10 It. 20(1. 30 It. 40 It. SOU. I 1 5 | 183 LJLpjxu j 218 LJip.m. : 242 LJLp.m. 282 LJLpjn. 280 Litpjxu WIND --fire miles per hour Temperature DUIerence in F. W 218 LfLpJiu 260 LJt.pjn. 237 LjLp.au 3211 j. p.m. 352 L-fLp.au 20 264 LiLpJo. 329 LfLp.au 376 LJLp.au 420 LJt.pjn. 456 LJt.pjn. 30 302 Lftpjn. 376 Lfipjxu 442 LJLpjn. 493 LJLp.su 538 LJLpjn. IMPORTANT: Building to have piopei air inlet. We recommend 2 times inlet area over outlet area. In the exhaust table we. have taken the outside wind velocity at an av erage of five miles per hour to simplify the use in figuring capacities of Ridge Ventilators. DAMPER OPERATOR TENSION TYPE One Hand Chain Operator for 100 Feet Damper length* Motor Power can be used at extra cost. Example: 1. Building 50' (width) X 250' (length) X 40' (height) = 500,000 c.f. 2. Five air changes. 3. 500,000 X S -7- 60 = 41,666 c.f.p.m. 4. 10 F. Temp. Difference -- 40' Stack Height -- 5 m. p. h. wind. Above table gives 328 L.ft.p.m. .5. To exhaust 41,666 c.f.p.m. at 328 L.ft.p.m., roof opening must be 127 sq. ft. 6 We recommend one ventilator 200' long, with a total opening of 127 sq. ft. This will give a ventilator size 127 -- 200 = .64". ^ 7. The nearest standard size ridge vent is .75' or 9". t [7] USHO 003420 RIDGE VENTILATOR RECOMMENDATIONS FOR BASE CONNECTIONS To Improve Ventilation and Weatherproofness [8] USHO 003421 A AIR CHANGES RECOMMENDED Type of Building Agriculture: Horse Bams Cow Bams Chicken House Brooder House Hog House Foundry Industry: Electric Furnace Pouring Section Shakeout Section Core Oven Rooms Cupola Section Forge Shop: Furnace & Hammer Building Heat Treating Sect. Food Industry: Vegetable Kettles Pressure Cookers Paper Industry: Machine Room Wet End Section Beater Room Digester Bldg. Air Changes per Hour 4296 cf/hr per horse 3542 cf/hr per Cow 4 2 6 (Baffles) 150-200 30-35 Suction Equip. 40-50 30-35 | Type of Building \ Steel Industry: Main Mill Bldg. * Slab" Furnace Sect. Coil Transfer Bldg. Annealing Bldg. Mesta Pickling Cont. Pickling Roll Shop Warehouse Galvanizing Machine Room 30-40 60-120 Utility: Boiler House Based on steam evaporation 100-120 Based on Tonnage 20-30 20 30 30-40 Motor Room Turbine Room Miscellaneous: Dye House Glass Furnace Bldg. Laundry Lavatories Packing House Air Changes per Hour 5-10 30 115 30-50 60-80 5-10 2 1 (Hood) 75-150 4-6 ' Special 65-above boiler Based on total K.W. Equipment 5-10 Hood 30 100-150 20-30 15 10-15 In several industries it is necessary before the correct air changes can be recommended that actual operating data is secured. Our ventilator engineers are ready to assist you any time in obtaining the required informa tion without any obligation. USEFUL INFORMATION Area of a Circle = ir --4-- = .7854 X D2. Circumference = DX 3.1416. Natural Gas = 1000 B.T.U. per cf. Manufactured Gas = 500 B.T.U. per cf. Blast Furnace Gas = 100 B.T.U. per cf. Fuel Oil = 145,000 B.T.U. per gal. Coal = 12,000 B.T.U. per lb. Fahrenheit = 9/5 Cent. 4- 32. Cent. = 5/9 F. -- 32. 1 lb. per r,q. in -- 144 lbs. per sq. ft. 1 Mile per Hour : 5280 ft. p.h. = 88 ft. p.m. 1/2 Pitch Roof = 12" in 12" Rise. 1/3 Pitch Roof = 8" in 12" Rise. 1/4 Pitch Roof = 6" in 12" Rise. 1/5 Pitch Roof = 4-4/5" in 12" Rise. 1 H.P. = .746 Kilowatt. 1 K.W. = 1.34 H.P. 1 H.P. = 3,000 foot pounds. 80 Mile Wind = 31.49 lbs. per sq. ft. Sulphuric Acid boils at 590 F. Nitric Acid boils at 242 F. Steel Melting Point, 2600 F. Cast Iron Melting Point, 2200 F. * [9] ........ .......... USHO 003422 PENGLASS VENTILATORS W I II Will PENNSYLVANIA WIRE KET ST. PHILA., PA. Prmred in U S A U3H0 003423 IJSHO 003424 round type ventilators------------------------- f Design and Structural Features 9 1 Upward Vertical Discharge prevents loss of energy, reduction of velocity and discharge due to sudden changes of air direction. Eliminates condensation below and consequently deterioration of roofing material^ 2. Free Discharge Area constantly increasing within ventilator head assures unrestricted passage of air. '.Upper Airflow Baffle, between top and windband renders unit stormproof and prevents back-drafts without retarding air flow. i 4. Lower Airflow Baffle effectively prevents discharge of air beneath windband, renders unit stormproof and aids in creating suction. Drain opening between air shaft and baffle permits passage of rain, snow, or trash. c. Airflow Director Cone eliminates trap, prevents turbulence and provides easy egress for air. 6. Unusually Large Windband creates extremely low pressure area, causes greater suction effect from passing winds with increasing greater capacity. 7 Burt "K-Frame" Design Braces. Sizes 30" and larger are provided with the Burt "K-Frame" design braces each of which is fabricated from angle and welded to make a one piece rigid structure of exceptional strength. The K-Frame ties together all ventilator head parts and transmits all load directly down through angle legs to angle ring connections at base. This K-Frame angle brace design simplifies erection to a minimum. For sizes 24" and smaller, braces are heavy bar 1 of ample size for rigid construction. 8. Heavy Swedges in windband and airshaft give additional stiffness and strength. 9. Angle Rings are provided on bottom of airshafts and top of bases for all sizes 30" and larger for addi The Burt "Free-Flow" Gravity Ventilator, by virtue of tional strength and simpler erection. simple design and principle of Air Flow provides 10. Metal Gauges are proportioned to assure rigidity, greater capacities with economy and efficiency, offer strength and endurance and to give more than suffi ing the advantage that fewer units are required for cient strength to withstand any wind or snow loads ample ventilation. It can be best described as the without causing excess weight in the unit. "super-capacity" gravity ventilator. 11. Screening is simply accomplished by circular Notice in the sectional view that the entire dis charge from the ventilator is vertically upward. Note also the absence of internal louvres which would tend to impede the free flow of air through the ventilator. Friction loss occurring in the ventilator head has been reduced to absolute minimum. Being free of all mov ing parts its construction is simpler and offers no framed screens of the required material which fit into the windband at top, or into airshaft of ventilator. 12. The Burt Free-Flow Gravity Ventilator can be con verted into the Free Flow Fan Ventilator by the addi tion of fan barrel section between head and base. (See Page 9). service problem whatever. Bases see page 6. Dampers see page 7. performance and dimension data FOX MOXI COMPLITI DITAIIS, WXITI FOX lULUTIN SPV-78 Cap., C.F.M.** , .. Sizes, Inches ... ... Overall Diam., Ins. . Overall Ht., Ins.*... Galv. or A.P.M.Ga. Copper, Oz. .. Aluminum, B & S Ga. lbs. (Galv.) 669 12 22% 204 24 16 22 21 911 1192 1504 1844 14 IS 18 20 26% 304 3414 374 22ivig 27I,/t6 29ll/is 314 24 24 22 22 16 16 18 18 22 22 20 20 23 36 57 69 2619 24 45% 38%S 22 18-20 20 104 4036 5688 30 36 57 48% 47`Ha' 53% 20 20 18 18 202 310 7591 42 79% 59%8 20-18 9763 48 91% 65'h 20-18 11996 14373 54 60 iosr 114 74% 83% 20-18 18-16 17035 66 125% 18-16 19590 24820 72 84 136% 159% 101%6 113%8 18-16 18-16 29750 96 182% 131'/i6 18-16 18-16 18-16 *18-16 Tm7 16-14 16-14 16-14 16-14 415 540 705 1105 1330 1635 2300 3245 "Exclusive of bast. ""Temperature difference 20F., Hack height, 40 ft., wind velocity 10 m.p.H. Where two gauges are shewn, heavier is for air shaft only. J 2 CJSHO 003425 gravity ventilators f Design and Structural Features Protected Free Outlet Area in excess of 150% of air shaft area insures unrestricted passage through head. Burt Inverted Lower Louvre, an exclusive fea ture, directs upward flow through ventilator head, in creasing siphonage action and preventing backdraft. Generous Overhang of ventilator top renders unit stormproof. " Amply Proportioned Windband assures large suction area and improved air moving capacities. - Strong Internal Bracing insures rigidity under all conditions. ' Glass Top can be supplied in place of metal to pro vide daylight so that ventilator also acts as skylight. Bases see page 6. Dampers see page 7. FOR MOM COMPLEX! DETAILS, WRITE FOR BULLETIN SPV-EA performance and dimension data Cap., C.F.M/V 100 Vent Sixes, Ins. . 6 Over-all Diam., Ins. . lO'- Over-alt Hf., Ins.* . . 8: to Galv., Ga. ... 24 Copper, Oz. 16 Alum., B & S Ga. . . 22 Net Wt., Lbs. 6 207 323 8 10 13vt 17% lo'tk 13% 24 24 16 16 22 22 79 465 625 12 14 20u/ic 24% 15% 17 24 24 16 16 22 22 13 15 821 16 27% 19% 24 16 22 19 1035 1260 1800 18 20 24 31 34% 41% 22/is 23`%2 2sn 22 22 22 18 18 18 20 20 20 28 36 46 2760 30 47 36% 20 20 18 81 3860 36 57 40 20 20 18 115 5125 42 66% 47 20 20 18 151 6466 48 76 55 20 20 18 206 7831 54 85 57% 20 24 18 264 9297 60 95 65 18 24 16 390 10880 12540 16390 20820 66 72 84 96 105 114 133 152 68% 75 85 99 18 18-16 18-16 JUJ-16 24 32-36 32-36 32-36 16 16-14 16-14 16-14 464 672 912 1162 Exclusive of ban. **Temporoture different* 20F., stack height, 40 ft., wind velocity 10 m.p.h. Where two gauges are shown, heavier is tor air shaft only. 1. Its finely balanced design eliminates friction. 2. Free turning is assured by two sets of bearings. 3. Large top overhang provides assurance against storms or driving gales. A strong support tube and braces are built to withstand strongest winds. Bases see page 6. Dampers see page 7. FOR MORE COMPLETE DETAILS, WRITE FOR BULLETIN SPV-9A performance and dimensional data Capacity cfm* Airsheft size Galv. st. qauae Overall height Overall length Outlet width Net weight lbs. Capacity cfmk Airehaft size Galv. st. gauge Overall heiaht Overall length Outlet width Net weight tbs. jr __ L 136 242 68 24 24 WUfc 161A __ 13% 7% 9% 69 1465 2070 20 24 20-22 20-22 321'rfn 383& 32% 38% 23 27 48 60 372 546 735 965 1200 to 12 14 16 18 22-24 22-24 22-24 22-24 22-24 19 . * ___ 25^_ _.,28 ITit. ___20%_ ____23& _ rn/L 14% . wvt 1814 12 17 22 27 _,30%_ ...Mik. 20% 34 3110 4220 5290 6530 30 36 42 48 18-20 18-20 18-20 18-20 44% 50% 53 55% 62% 69% 70Vi 81% 33% 39% 45% 52% 110 168 222 320 Temp. diff. 20F., Stack height 40 ft., wind velocity 10 m.p.h. For more complete details, write for Bulletin SPV9A Where two gauges are shown, heavier is for air shaft only. . , _ -op ,. T ll B U T I M OnUlGCiUrinCJ C O fTt p Q O y ue&iig'ahiei.a. 3 USH0 003426 *. ,r -- monovent continuous ridge ventilators-------------------------- - small type Design and Construction Inconspicuous exterior makes it highly desirable on buildings where impairment oi roof lines would be considered a detriment. Ample damper and windband overhang together with continuous baffle design renders the unit absolutely stormproof and prevents any baclcdraft. Continuous weep openings are sufficiently large to avoid clogging with leaves or cinders and are directly adjacent to the airshaft, below damper, where building heat aids in keeping snow or ice melted and opening clear. ; Damper operating mechanism is located entirely be low the damper, fully protected from the weather at all times. Any size of Monovent can be furnished with either the hand controlled or motor operated dampers. Motor operation consists of a reversible gear head motor with cable drum, limit switch and three position drum switch stops and starts operation in either direction. . Construction is in standard 10-ft sections with special sections of shorter length to conform with building con* struction and capacity required. Sections are connected by butt joints in windband, airshaft and damper, tied together with splice plates. * Screen, when required, is provided in S or 10 ft. lengths, framed in metal and mounted at top outlet resting on top windband braces. It is readily removable lor cleaning. Mounting and Flashing Details Methods of mounting and flashing Burt Monovent to roof are dependent upon (l) Size of Ventilator; (2) Roof Construction and Roofing Material. e Design and Construction Designed on broad, simple airflow lines, it is particularly well adapted for steel mills, foundries, forge shops, and other heavy industry. It has stability, ease of erection and high capacity. The structural welded brace frames are evenly spaced at eight foot intervals in the length of the ventilator. Frames are designed for strength and easy erection. The airshaft, fixed top, windband and dampers are securely fastened to this structural framing. Continuous weep the full length prevents clogging by leaves or debris Dampers are center hinged type with rack and pinions controlled by sturdy worm gear drive and operating chain to floor level. They can be opened to a position suitable to any ventilating condition. Sheet metal may be supplied in galvanized steel, as bestos protected metal, copper, aluminum, ceramic coated steel or other special metals. Bracing members--painted steel, galvanized steel, brass, aluminum, acid resisting painted steel, and black steel with Neoprene or other special coatings. Mounting and Flashing Details The figures at right show the construction and mounting of these units for various types of roof with methods of flashing. Roof flashings are formed in the factory to fit the roof pitch. End plates are rigid and form a weather proof seal at the ends of each run. Erection instructions and detailed information on assembly of the various parts are supplied with each order. i 4 fJSHG 003427 r H gravity fTf ventilators The figures below show the construction and typical mounting details for various types of roof openings and method of flashing. Roof flashings are formed in the factory to fit curb or roof pitch. End plates are rigid and form a weatherproof seal at ends of each In designing roots care should be taken not lo restrict the ventilation opening. For 30" and larger size Monovent see lower half of this page. rr A MOUNTING DETAIL FOR CONCRETE CURB Detail for Wood Curb is Similar MOUNTING DETAIL FOR PITCHED ROOF MOUNTING DETAIL FOR 4", 6". 9". & 12" SIZES Detail Tor Flat Roof is Similar Flashing Shown for Corrugated Steel Roof FOR MORE COMPLETE DETAILS WRITE FOR BULLETIN SPV-6A performance and dimension data C.FM. 136 203 Vent. Dimansions--Ins. Vent. . Six* A B C 0 * . 8:h 5% 9*w 6 ' 13'A , 7'i ia--4 Galv. or A.P.M. Copper Ca. Ox. 24 16 24 16 307 19* ' 10 17VK- 24 16 410 . 614 . 18 ; 25's i '3 211 * 22 36'* . 18'"2 31`4 ' 20 18 18 820 24 46 23% 37l'ltfi . 18 > 20 'Per foot of length. Temp. diff. 20F; stack heigh* 40 ft. Alum. Net Wt. per Ft.--lbs \ Go. Golv Copper A.P.M. Alum, i 22 ` 6.4 5.7 9.4 1 2.2 j 22 9.2 8.2 13.3 j 3.1 22 13.3 12.0 20 ; 19.4 17.3 18.9 i 4.5 1 26.2 j 6.5 j 18 ' 34.4 26.4 16 1 51.9 34.9 44.7 11.5 65.7 j 17.3 i Vont Dimensions performance and dimensional data dimensions - inches sheet metal gauges r* sV o O i* er * 820 1025 1230 1435 1640 1845 2050 2460 2B70 3280 4100 a< e 5* A 0 24 24 30 30 36 36 42 42 48 48 54 54 60 60 72 72 84 84 96 96 120 120 8 34% 41ll/ie 48% 56`Vis 62% 69% 77% 92% 106% 120 154% galv. steel - a.p.m. ceramic coated st'l. aluminum c Corr. Flat Corr. Flat W/B Gutters Flat W/B- Gutters Flat F/T Flash- Air- F/T -Ftash- Air- Dor. inqs Shft. Oar. inqs Shft. 61% 22 22 20 .032 ! .032 .040 74% 87% 101% 22 < 22 , 20 22 22 20 22 22 ' 20 .032 .032 .032 ! .032 1 .032 1 .032 .040 .040 .040 114% 22 22 i20 .032 ; .032 .040 129 22 ; 22 1 18 .032 .032 .050 143 22 i 22 > 18 .032 .032 .050 168 197% 225% 22 22 2 18 22 i10 : is 22 20 ! 18 .032 .032 .032 .032 .040 .040 .050 .050 .050 285% 22 20 . 18 .032 .040 .050 >r ft f* ,S\ .. a, sy34a-vv.t ^ I\ Nr^HSBHEa: tv , uj aia*rjtfs5? srst-A VdAfCH tWt JW oo r, ,js<no e* 5 "r Notes -- * per foot of length -- Temperature difference 20F; stack height 40 ft. ventilator frames on 8'0" centers of min. 3/16" thick angle, sheet metal panels span one frame spacing. I j ventilators designed to withstand wind load of 30 pounds per square ^ foot. Ventilator can be supplied with or without damper. For more complete details write for Bulletin SPV-6B-61. The Burt Manufacturing Company USHO 003428 thermavent Oesign and Construction The Burt Thermavent is a gravity roof ventilator designed to have the smallest possible height commensurate with efficiency of oper ation. The units are designed to fit upon a curb and have a total height of 20," above the curb. Designed to a standard size of 9'6" wide x 7*6*' long, they consist of three ventilating cells, each of which has an airshaft opening of 12" x 114" or square feet, so that a standard 9'6" three cell unit will have 28 Vi square feet of outlet opening. Special two cell units can be supplied 9*6" wide x 5*0" long, S`0" wide x 7'6" long or S`0" wide x 5'0" long with two airshaft open ings. These units supplied only on special order. Each cell has a damper and all dampers are operated in unison either by hand chain, worm gear operators, or by motor operation and may be opened to any required degree. As much outlet area as may be necessary for any size building may be obtained by using as many standard units as are required, either as single units placed in strategic positions over the roof; or joined together in one or more continuous runs down the length of the roof. The units are weatherproof and have ample drainage with the water flowing to the sides of the unit and escaping to the roof through continuous weep spaces and out over the curbs. The units are designed to take bird screens which are supplied as an extra when desired. Monitor Type j Materials Standard construction is of Galvanized steel with 16 gauge curb, 18 gauge support members, dampers 20 gauge and 22 gauge sheets for the balance of the unit. Other materials can be used, however, such as aluminum, asbestos protected metals, copper or stainless steel. Unit Arrangement and Installation Because the Burt Thermavent is light in weight, it is specially adapted to use on modem roof construction where long span joists are used. For use on large roof areas this unit has wide adaptability to new or existing roofs. Where used on top of an existing Monitor, louvers or window sash must be permanently closed to prevent short circuiting of the vent stream so that supply air has to be drawn from the main floor area. Curb construction is simple in arrangement and can be adapted to various types of building construction. Damper Construction As in all Burt ventilator construction, the damper operating mechanism is of good sturdy construction, designed and built for the life of the unit and with practically no maintenance. All dampers are connected together and a run of five standard units may be operated either manually or by electric motor. Stage Ventilation For stage ventilation and other installations where fire hazard is of importance, these units may be fitted with fusible links and counter-weighted dampers so that in case of fire, all dampers automatically open to the fullest extent for the quick passage of smoke and flame to meet underwriter's requirements. In these units, the fusible link is placed in the direct air stream. Monitor Type A large ventilator designed for exhausting air from Glass Plants, Forge Shops, Steel Mills, Aluminum Plants and other industries where extreme heat conditions require large volumes of air to be exhausted from the building. This unit has very high efficiency and is weatherproof with ample drainage facility to roof. Dampers are continuous down one side of the vent and operated by grease filled worm gears and hand chain or may be motor operated when desired. A large expanse of windband takes full advantage of wind velocity to obtain large capacities and suction effect in addition to the temperature difference and stack height. Burt engineers will be glad to cooperate with prospective cus tomers to obtain the best solution of your air moving problem to obtain the maximum amount of exhaust at least cost. dampers and controls Louvre Sliding Cone Damper Control Motor Single Disc Butterfly % f There are five general types of dampers which in several instances are interchangeable. All types shown are efficient in operation and require a minimum of attention. The correct type will be provided 6 according to conditions or preferably upon the recommendations of Burt Engineers. Damper control motors are enclosed in ventil ated but weathertigbt housing outside ventilator airshaft. When used with fan ventilators, control can be for selective operation or interconnected with fan motor. FOR MORI COMPUTE DETAILS WRITE FOR BULLETIN SPV-14A USHO 003429 ____________________ > Unit Arrangement and Installation gravity ventilators 0 "T7T -fi r SECTIONS. ALLOWINO OMINAOE. _5>#0INE 08 xcusawiOTHi SECTION 'B-S* '^OEAAANCC i S .6* I lO'CT SECTIONS Thru S.NCLE <UM ThEBMXvSMT DIMENSIONS IN INCHES METAL i NET SHIFPINO GAUGES 1WEIGHTSWEIGHTS bound Ba*o "H i i . n Round Botot Squaro So*t Round Bern 5quor* Boiot s : S-l , 2 i J: ' A 'Oidm. 6-2 C . D F-IJF-2* H*1 ` H-2 Ji $<3 `8 6 1 6 10x10 1 0 4 3 6 5 22 16 24 t 4 . t t 12x12 1 0 T* 3 6 6 32 16 24 5 Cop'r > 3 *a <3 2u < > > _o*3 ai 35 3 7 5 S 15 14 1 16 14 17 4 S 6 9 17 16 ts 16 19 to 5 10 14x14 1 0 6 3 6 7 22 16 24 6 4 10 7 12 19 17 20 IS 22 12 12 16x16 i ;o 4 3 6 S 22 16 24 . 7 5 12 1 9 14 21 19 23 20 25 14 TT- ttxll 1 0 4 3 7161 9 22 16 24 9 7 15 11 17 25 22 26 1 22 2S 16 S 16 20x20 1 0 4 3 714.10 22 16 24 11 S 17 13 19 26 24 29 25 31 IS l it 22x22 1 0 4 3 7W,T0V* 20 IS 22 14 10 23 16 26 30 26 35 25 38 20 ; 20 26x26 1 0 5 3 7!4l 11 20 IS 22 17 12 30 21 34 35 31 43 37 47 24 24 30x30 1 0 5 3 7%jn% 20 20 22 21 16 37 2t 42 40 35 ISO 42 55 30 30 36x36 1 Vt 3y* 5 4 iokIisu IS 24 20 39 27 62 43 62 59 41 73 57 73 . 36 < 36 42x42 !1V*<3V& 6 4 10 ll6 IS 24 20 52 36 SI 56 81 65 59 95 74 95 42 1 42 48x48 1W5 3V4 6 4 10 1614 IS 24 IS 63 44 9S 6S t16 90 74 117 92 135 4t 1 41 54x54 1**314 6 4 13 17Vfc IS 2S IS 1 10 65 117 94 139 144 127 137 132 179 34 i 54 60x60 2 3 6 4 1214*18 IS 32 t-rr 95 SS 152 141 195 160 149 202 192 245 60 t 60 66x66 2 ' 6 4 1214 19 16 32 17 135 103 i214 162 226 220 190 303 260 315 ' 66 i 66 72x72 2 3 6 4 1214 20 i 72 1 72 7lx7t a ,3 6 T 1SS4 21 ! 14 i 84 90x90 Ti~ 6 4 1514 22 16 32 17 155 117 i249 193 271 233 205 341 294 363 16 36 17 '264 233 350 310 414 371 347 472 447 536 16 36 17 341 300 463 407 504 462 433 687 iML 724 ' 96 . 96 10JxI0J|5S6!5W _2_ 4 , ?$.. -*30 380 1583 516 620 541 50S IS23 1755 860 I. j i bases ; i ]- All Burt Bases are tailor made to fit the shape of the roof and are con* structed to withstand severe wind and snow loads together with the weight of the ventilator. They have a wide flashing for rigid mounting and in the larger sizes are provided with. Angie rings atk! stiffener angles. Dimensions as given are Burt standard but bases for special conditions can be fur* nished to customers dimensions. In ordering customer should supply dimensions "T" and "E" (Hoof slope inches per foot) which ever applies and order by Figure number. Condensation gutters are optional at extra cost. FOR MORE COMPLETE DETAILS, WRITE FOR BULLETIN SPV-15B The Burt Manufacturing Company 7 USHO 003430 fans t i Burt Axial Flow Airfoil Fan la sizes 30" to 84" the new Burt Axial Flow Airfoil Fan is used. This fan, designed to deliver maximum air movement per horse* power, is the result of modem aerodynamic design coupled with laboratory development work carried on by experienced engin eers. Fan wheel is made of Silicon Aluminum Alloy Castings with high tensile alloy steel fasteners. fan motor units The blades are of airfoil section, designed specially for fan duty and the contours are such--that true axial flow is obtained, util* izing the entire blade area and producing a uniform velocity throughout the area traveled by the blades. These fans are correctly proportioned to minimize tip and hub losses and the hub is designed to obtain high efficiency with ex* ceptional strength. The complete fan is truly balanced and then tested upon the motor in the fan section before leaving our plant. Because of its advanced design, with frictional and recircula* tion losses at a minimum, more air per horsepower is delivered. For the industrial plant where large volumes of air are to be re* moved they are extremely efficient and will handle air at wide differences of temperature, pressure and volume. Airfoil fans can be supplied for static pressure conditions. Fans For Burt Ventilators Burt Fan Wheels are made in two types. For ventilator sizes 12" to 24", steel wheels are supplied with steel hubs, spider of pressed steel and blades of sheet steel. The blades are laminated and rivet* ed to withstand heavy continuous duty. Regular Motor Mounting For ordinary ventilating problems where no adverse conditions exist and the primary requisite is a high movement of air, the Regular Motor Mounting with motor direct connected to fan wheel is normally used. Motors with standard in sulation will operate satisfactory in temperatures up to 105 F. Motors provided with Class B insulation (heat resisting) can be used in temperatures up to 140 F. The fan section consists of an airshaft of sufficient height to house the motor mounting, motor and fan wheel. Platform for mounting motors in the smaller sizes, is of heavy formed steel con struction with the addition of back support in the medium sizes. In the larger units, where motors become heavy, motor platforms are of structural steel properly designed for the load and 9peed conditions. For sizes 30*' and larger, angle rings are provided at top and bottom of the section for reinforcement and connection to head and base. To transmit load directly to the roof structure and to further reinforce the fan barrel, vertical stiffener angles are welded between the rings at four points and riveted to the airshaft. Heat Resisting Mounting Where the temperature of the air exceeds 105 F.. but is intermittent and does not exceed ISO0 F. Heat Resisting mounting provides protection for the motor. If temperatures are constant and are slightly higher. Class B. insulation motor windings should be used for added protection. In ordering, give temperature of the air to be moved. The motor is rigidly fastened in a sheet steel shell properly proportioned to allow an annular air passage between motor and shell. A circular air intake of heavy gauge steel extends through and is fastened to the airshaft. as illustrated in the cut. The action of the ventilator fan draws outside air through the air intake upward between motor and shell, discharging it into the main air stream at the top of the motor. By using these air intakes, a supply of outside air is obtained, independent of the main exhaust stream which allows the ventilator to be used in temperatures much higher than would otherwise be possible. Electrical and greasing connections are easily accessible from the inspection door. V Belt Drive Motor Mounting For severely corrosive or high temperatures or where, for any reason, it is desirable to keep the motor outside of the air flow duct, the V Belt Drive Motor Mounting is recommended. The fan wheel is mounted upon a central shaft running in ball bearings which are in turn mounted in heavy steel plate tube reinforced by a plate. The fan drive consists of V Belts connected by V-Belt drive pulleys to the motor. The entire drive is enclosed in a circular steel casing with removable cover at end for protection against any destructive effects of the discharged air. The enclosure acts as a fresh air duct with outside air being drawn in over the pulleys and belt by the action of the fan and discharging into the main aixstream. The drive motor, mounted on the outside of the fan section in a sheet metal housing is entirely removed from any heat or corrosive condition. The motor mounting of structural steel supports and steel base is designed for adjustment of belt tension when required. 8 I I USHO 003431 fan ventilators # "free flow" fan Is a motor powered companion unit to the Free Flow The "Free Flow" head is the same as described on page 2 and the fan and motor units are described on Gravity, the advantages of which are even more page 8. Good gravity ventilation is provided when marked in high velocity fan work when accelerated the fan is not operating. ventilation is desired to exhaust unfavorable atmo spheric conditions such as smoke, dust, fumes, excessive heat, steam, etc. exhaust capacities Burt free flow fan ventilators Vent. Fan Capacity Sirs Diam. C.FM. Inches Inches 1040 12 10U 1550 14 12* 2150 16 141 -s* 2620 18 16K. 3340 20 181. 4500 24 22U 5400 30 28 6460 30 28 8280 30 28 10380 36 34 11625 36 34 13020 36 34 14230 42 40 16045 42 40 18125 42 40 19530 42 40 18835 48 46 23900 48 46 27715 48 46 31800 48 46 29760 54 52 32550 54 52 38130 54 52 32364 60 58 36820 60 58 43710 60 56 51150 60 58 41850 66 64 53940 66 64 59520 66 64 64170 72 70 69900 72 70 61000 71 70 85000 84 82 99050 84 82 Mater Fan Over-all Net Section Height Weight H.P. R.PM. Hi. Inches Inches Lbs. `to 1725 12 5 10 1725 12 1140 15 40V, 431 V,,; 60 73 93 1140 15 `6 1140 15 1140 15 55Ma 57'-. 65'-,r. 105 156 201 n 1140 ISt', 8V'irt /j 1140 181', 14 1750 181 \ 385 385 370 1140 181/, 87`s 543 1140 181', 87-s 556 * 1 1750 181/, 87?^ 554 'I 860 201', 96-Vl6 736 t 1140 1 94V, 714 H4 1140 20'/, ' 74!~ 2 1140 201/, 96V,<l ~ 765 1 860 20'/, 103*4 905 2 1140 20W K 103*4 917 3 860 26'/, 109'/, 1038 5 1140 26'/, 109'4 1038 2 860 241', 116-H 1247 3 860 26*/^ nsH 1290 5 1140 261/, 118-H 1290 2 860 24' 126^ 1747 3 860 261', 128V, 1792 S 860 30>'( 132V, lfW- " 7t4 1140 30`/, ` 132V, ""191$'" 3 860 26-`-C~ ~ 135V,n * " 2\tf~ 5 860 30-v 139*40 2325 714 860 32'-* 141*4*1 2402 74 860 32::<t 154'4fi 3015 10 860 32'4 154`4 305T" 15 860 36:i ?58<4 3127 10 720 36'4 162*'4* 38'6f~ 15 720 36'/4 171 t'/ig 3?W Capacities shown are with the Free Flow head in place on the fan barrel and have been corrected to standard atmospheric conditions. The "iree delivery" capacities are to be used when the ventilator is exhausting directly from open building spaces. Where the ian ventila tor is to operate under static pressure conditions consult the Burt Engineering Department. FOR MORI COMPUTI DITAILS, WRITI FOR lULlKTIN SFV-10A standard fan The Burt "Standard" Fan Ventilator is a moderately priced unit which is an adaptation .of the Standard Gravity type (page 3) with discharge velocities greatly increased by the fan unit. Fan Sections, see page 8. Air Moving Capacities Excellent for ordinary ventilating problems though deliveries lower than Free-Flow type. Lower In Over-all Height than FreeFIow type. Greatly Increased Air Movement over gravity types. Capacity C.F.M. Vent Size Inches 685 12 1070 14 1340 16 1900 18 2650 20 3500 24 5550 30 7500 36 10000 42 15000 48 Fan Diam. Indies 1014 121/4 141/. 16V4 18V4 22'/4 28 34 40 46 Motor H.P. R.P.M. Wo 1725 Wo 1725 % 1140 'A 1140 14 1140 14 1140 'A 1140 Vs 1140 % 860 1 860 Over-all Diam., Ins. 20U/l6 24'$ 1TA 31 3414 4l;i 47'$ 56/ig 66'4 75r, Over-all Net Height Weight inches Lbs. 36 58 39 65 44 76 51 100 52 120 57 141' 70 257 74 343 83 415 91 609 3uft Manufacturing Com.v.! 9 USHO 003432 low type fan ventilators 6 low type 9 9 Burt Low Type Fan Ventilator is a highly efficient power driven fan ventilating unit, which is low in height, pleasing in general design and meets the architectural require ments for an inconspicuous roof ventilator. Modern engineering has combined in this unit high capacity, positive weather-proofness, and simplicity of installation. It may be used either as an exhaust fan ventilator or as a fresh air supply unit with high efficiency. The base of the unit fits over a standard square curb with ample flashing. The power drive may be either direct motor drive or driven by means of V belt and pulleys. The latter allows for low speed fans and motor of higher speed with its attendant lower cost. Adjustable drive pulleys may be supplied at a slight additional cost. For the handling of corrosive fumes or ex cessive heat the unit can be engineered to meet such applications. For easy access to the power unit and drive assembly sizes up to 30" are hinged at the base enabling the upper part of the unit to be lifted, thus exposing the power unit for ease of maintenance and belt adjustment. In the larger sizes a removable panel in one side of the unit is provided for the same purpose. Outlet hood on all sizes is also hinged for access to the fan. The Fan Wheels are low noise level and aerodynamically designed for the varying capacities and static pressures involved. Electric Motors are totally enclosed ball bearing 55 C. temp, rise of sufficient power for the duty involved. They can be supplied for any current characteristic, also in explosion proof frames when required. Automatic Louver Type Dampers as shown may be supplied or they can be motor operated when required. Standard Materials are prime galvanized steel sheets with framing of structural steel. However, other material can be supplied, such as aluminum, stainless steel or other materials which may be adapted to this type of construction. exhaust capacities Burt low type fan ventilators Fan dia 12T1 12T2 12T3 12T4 T4T1 14T2 14T3 I6T1 16T2 16T3 18TI 18T2 18T3 20T1 20T2 20T3 20T4 22T2 22T3 22T4 22T5 22T6 24T1 24T2 24T3 24T4 24T5 28T1 2872 28T3 28T4 28T5 2ST6 28T7 28T8 30T1 30T2 30T3 30T4 36A1 36A2 36A3 36A4 36A5 42A1 42A2 42A3 42A4 48AJ 48A2 48A3 48A4 S4AI 54A2 54A3 60A1 60A2 60A3 60A4 Motor Fan h.p. r.p.m. r.p.m. 0" ctm at varvtna itatie oreiiure 1'4" '<s 850 D 700 337 1140 D 975 800 St 1725 D 1470 1375 1,'. 1725 D 1470 1375 1250 'A 850 D 800 660 1140 D 1445 1275 1725 0 2180 2090 1975 1866 850 D 1650 1360 K 1140 D 2220 2025 1725 D 2980 2815 2680 2500 850 D 2260 2035 1140 D 3040 2870 2680 V% 1725 D 3460 t744 580 2220 3360 1400 1725 720 2750 V* 850 D 3240 u 1140 D 4350 2220 2900 4130 3800 3325 { irii 600 3456 2400 K 1725 720 4120 850 D 4300 850 0 3920 3500 3900 3500 2880 14 1140 D 5250 4950 4610 V2 1140 O 4290 iA 1725 530 4160 14 1725 600 4710 4010 2700 3690 3680 3100 1725 720 5650 14 850 O 5650 4960 5270 4440 34 1140 D 6750 K 1725 600 64S0 6220 5650 5620 4890 14 1725 600 5400 14 1725 600 7370 4310 6375 3210 1.4 1725 720 '6480 '* 850 0 . 7650 Vi 850 D 6190 114 1140 D 10280 IV. 1140 D 8300 14 1725 600 5270 14 1725 720 6320 5680 7020 5590 9860 7900 4200 5580 4430 6130 4800 9310 7400 4080 3900 6800 V* 850 D 7480 6710 5910 1 850 D 9100 8450 7500 6400 14 1140 425 9000 7700 4000 % 1140 425 10200 8400 6400 I 1725 570 12000 9800 7700 5600 H4 1725 690 13200 11500 9500 7500 2 850 D 15000 13500 11000 9000 V, 1140 450 13100 9800 7000 1 1140 570 15200 11650 8600 6520 UA 1750 690 17200 14000 10970 8200 2 850 D 18900 16200 12800 10080 1 1140 450 17800 12750 8940 2 1750 570 21500 18000 14000 10650 3 850 D 24500 22200 18350 15000 5 1140 D 30400 26600 22500 18800 2 1140 450 23000 20000 15850 12500 3 1140 570 30400 24600 20050 16200 5 850 D 36900 30600 26000 21600 2 1140 450 30600 22320 17150 12300 3 1140 570 34100 28300 22300 17900 5 850 D 41400 34800 29400 24000 74 850 D 47400 42400 36500 30000 D indie aUt Dire*1 Drivt. Other speeds and H.P. can be supplied. 1-V' 7200 7700 11900 15800 8620 12250 17850 13000 19000 24SOO FOR MORE COMPLETE DETAILS, WRITE FOR BULLETIN SPV-16 10 I 1 I USHO 003433 ifflj ventilators free exhaust The Airshaft extends above the fan and terminates in a pair of dampers which open automatically when the motor is started. When the dampers are open an un restricted column of air is drawn upward by the axial flow fan exhausting a very high volume of air through the unit. When the motor is shut down, the dampers auto matically close and are designed to make a thoroughly weatherproof structure. A rigidly constructed windband surrounds and protects the dampers, but the unit does not function as a gravity exhaust unit. Standard construction is of galvanized steel sheets and heavy steel structural members but can be sup plied in aluminum, protected metal, etc. Motors are totally enclosed ball bearing type and can be supplied for any Standard characteristic also in explosion proof frames when specified. Where corrosive fumes or excessive heat conditions prevail the unit can be furnished with motor shroud and ventilating duct. exhaust capacities Burt F.E.F. ventilators Vent tii. inch.. Capacity cfm M Btor H.P. R.P.M. Overall height incnee dim inches 1 Weight lbs. 24 5000 % 1140 6800 '* r i<T'" 1750 36V4 39x39 259 257" The Burt Free Exhaust Fan Ventilator has been 30 10000 11800 % i* 1750 1750' 44i/j 45x45 397 400 0 designed for highly efficient service in the rapid removal of air contaminated with smoke, dust and 14200 i 1750 476 36 16000 114 1750 49 51x51 484 18500 2 1750 497 heat. 24000 42 27000 2 3 1140 1140 5314 57x57 617 674 This ventilator is equipped with the Burt Axial Flow Fan direct connected to an electric motor 31000 5 31460 3 48 37300 5 1750 1140 1750 5814 63x63 662 818 806 which is mounted on a rigidly constructed plat 42700 71h r i7so 871 form in the base of the unit. The base is equipped with an access door for convenience in erection and servicing. 54 52440'"' 7*4 10 60 66000 75550 10 15 1140 1140" 1140 1140 66% 7214 69x69 75x75 1213 "'1297' 1460 1495 FOR MORE COMPLETE DETAILS, WRITE FOR BULLETIN SPV-18 cum w>otn a i' 0 A 0-4 wit Out. hurt prefabricated curbs _________ 'P* X IASCJ ARC FABRICATED 101* CAW tTIII. burt spun aluminum gravity reiiof ventilator--model 'gr' dimensional data A-OfAMCTER____________________| 0 Typa of Ventilator Centnfl.w Model `0* Centnflew Model ** 0-6 BFJ 13 9 toVi 0-7 0-8 17 9% 11 0-9 0-10 0-11 20 12% 14 D-12 0-14 24 16% 18 8-16 B-18 27 19% 21 8-22 8-24 33 25% 27 B-33 8-36 45 37% 39 8-42 8-48 57 49% 51 dim. sr-ir jr-16 ,r-l gr-20 gr-24 gr>27 gr-32 gr-34 gr-42 S'-4* G 12 1614 i8ki 20% 24%,, 27% 311/2 36 42%fi 4:Hn A 26'A SAW 34 34 44 F 12 16 18 20 28 44 55!i 55% 62 31 34 40W 45 76 48 E 20 24 26 28 36 39 42 4*14 53 56 J JOl/j 25 27 2>,4 37 40 43 4914 54 57 II USHO 003434 iuTt ALL A(ecu - Spuut AUunUuun driu * y-belf drive centriflow fans tT: c direct drive spun units design rugged dependable Burt design and manufacture thru-out low pleasing appearance non-overloading backward curved centrifugal fan wheel motors and drives on oversized resilient mountings motors mounted in separate compartment out of air stream easy access for installation and inspection wide selection of sizes, capacities, speeds and static pressures curb sizes designed for minimum noise levels construction heavy gauge spun aluminum housings oversize supports all aluminum non-sparking fan wheels v-belt drive units have adjustable sheaves dampers drop-in-sleeve type automatic back-draft motor operated (2 position and modulating) V-belt drive spun units motors heavy duty, open frame, ball bearing for fractional and integral ratings in ventilated housings shaded pole ratings open frame ball and sleeve bearings modifications disconnect switches screens special protective coatings sub-bases pre-fabricated insulated curbs curb gaskets unit hinges various motor power characteristics and frame enclosures and multi-speeds factory wiring ratings units of 16" wheel diameter and larger carry AMCA certified capacity ratings smaller sizes certified and guaranteed by Burt in accordance with applicable code units sizes from 6" wheel diameter thru 48" wheel diameter static pressure range 0" thru 1" w.g. (higher static pressures on application) horse-power ratings from 120 thru 7-1 2 dimensional data--direct drive units 12 USHO 003435 # rs. Qe/Ul^ied Qap^Utf RcUUufl v-belt drive units Unit No. and Whool Dia. H. Fon Fon InUt P. R.P.M. TIP Spd Ft./Min. Araa Sq./Ft. 0 N B-16 A.W 8 .Mj C Vi D l* E IA 752 827 948 1044 1193 3150 3460 3980 4360 5010 .7854 1683 1851 2121 2336 2670 1410 1600 1900 2140 2500 A 618 2920 1969 1600 B-l 8 8 C D E 680 3210 V'* 778 3670 >* 857 4140 u 980 4620 .9940 2167 2480 2730 3123 1830 2190 2460 2900 A sv 442 2540 2571 1930 B 487 2810 2833 2250 B-22 C 0 *4 550 3170 660 3800 1.485 3200 3650 2690 3200 E i,a 755 4360 4170 3750 F % 865 4990 8 455 2860 4780 3265 4420 2525 C B-24 0 E >4 520 3260 3730 570 3580 4090 1A 655 4110 t.767 4700 3080 3500 4280 F y G1 750 4710 825 5180 5382 5920 4940 5520 B Vf 372 2630 3801 2780 C /. 426 3011 4353 D '4 469 3315 4792 B-27 E 1*, 537 3796 2.237 5487 F V. 613 4333 6264 G1 677 4786 6918 3480 4000 4780 5650 6360 H 1% C . '/ D V* E B-30 F V* V* G 775 5478 358 2812 394 3100 451 3530 516 4040 568 4460 2.761 7919 5017 5522 6321 7232 7960 7440 3870 4475 5400 6430 7240 H IV* 655 5140 J2 715 5610 9180 10020 8550 9440 0 V* 336 2890 6268 1E V* 384 3320 7163 " F V4 440 3800 6208 B-33 G 1 470 4060 3.341 8582 H IV* 538 4648 9824 42 592 5114 10809 4900 6000 7200 7850 9150 10200 K3 679 5866 12398 11850 B-36 D V* E 14 F *4 G H ^ IV* 281 2648 321 3025 369 3478 407 3836 465 4383 3.976 6661 7609 8747 9649 11022 5280 6420 7700 8700 10220 J 2 , 513 4835 12160 11400 K3 588 5542 13938 13300 E v* 250 2748 F *4 286 3143 9410 10765 7600 9200 Gi B-42 H IV* .....J- ' 2 315 ~ 3462 360 3956 396 4352 5.412 11857 13551 14906 10430 12300 13800 K3 454 4989 17090 "*1 16100 l5 540 5935 20327 19540 F V* 229 2879 12867 10600 G1 252" 3168 14160 12150 H IV* 288 3620 16182 B-48 J 2 317 3985 7.069 17812 K3 363 4563 20397 14400 16200 19000 5 431 5418 24218 23100 M TV* 492 6184 27648 26600 dimensional data C. F. M. AT STATIC PRES5URE W - ****saswsa 1140 1350 1680 1940 2330 1210 1480 1890 2200 2660 1160 1650 2170 2750 3350 4070 1750 2450 2900 3680 4500 5120 1600 2600 3170 4100 5050 5800 6950 2640 3410 4500 5650 6500 7900 8870 3500 4800 6150 7100 8500 9600 11300 3150 5050 6600 7750 9350 10680 12630 5200 7450 8950 11050 12650 15100 16700 7900 9900 . 12600 14600 17600 21900 25600 % 800 1080 1465 1740 2150 500 . 1070 . 1580 1920 2420 1550 2250 2940 3720 1700 2325 3175 4050 4700 950 2250 3400 4420 5250 6450 1900 3500 4850 5800 7300 8300 3375 5100 6250 7800 9000 10800 1800 5150 6620 8500 9920 12000 4500 6980 9700 11500 14100 17860 6300 10300 12700 16100 20700 24600 1A 680 1215 1540 1980 1180 1630 2180 1675 2525 3370 1350 2675 3600 4310 2525 3800 4700 5975 2000 3920 5050 6660 7710 3800 5200 7100 8400 10300 1800 5100 7450 9150 11330 2800 7760 10100 13100 17030 6500 10350 14500 19500 23550 H 900 1310 1810 ' y* 930 1620 ^ `sary.alup * 1 1260 1925 300 1630 1230 500 2075 3025 -- 1300 2570 1800 1825 " 3150 3910 2590 3500 . 3100 4150 5500 1600 3500 5000 1700 2975 2350 4500 2225 3600 2700 4200 6020 7150 3050 5340 6570 4550 5900 3550 5230 3500 6100 7700 9750 4950 6800 9200 3100 5750 8500 4500 7650 1250 6200 8120 10650 3800 6900 9850 5050 6850 ___________ 7650 4400 8200 11900 16180 6700 12450 18200 22500 4900 10450 15200 9600 16600 8430 14200 5000 13080 . ... _________ 4600 14800 12600 ""20150 " " 18600 -- v-belt drive units 1/ / =! ssssr' UNIT SIZE dim. B-16 B-18 B-22 B-24 B-27 B-30 B-33 B-36 B-42 B-48 \ a 34 34 44 44 5516 5516 62 62 76 76 b 2216 22V* 25% 25% 3016 3016 3516 3516 41% 41% N c 214 216 216 216 3 3 3 3 3 3 1 3 3 3% 3V 4% 416 5 5 616 616 e 27 27 33 33 39 39 45 45 57 57 f 19 19 25 25 31 31 37 37 49 49 h 17 17 23 23 2716 2716 34 34 44 44 13 USHO 003436 fixed louvers Standard * adjustable louvers Fig. 3 Burt fixed type louver. Fig. 3. The sill and head are of formed flanged channel welded to channel fanned jambs making a strong weatherproof basic frame. The blades are riveted to the jambs and are flanged on each side so that the blades overlap each other for weather protection. This type of frame provides adequate area for attaching screen. For extreme weather conditions--where it is necessary to pro* vide an air inlet, yet providing protection against wind driven rams, a fixed type louver, Fig. 8, may be used. The blades overlap each other and are designed with water stop projecting Ups at center and top of each blade to stop the water from being driven up and over the blades by force of the wind. Fig. 5 illustrates a simple form of adjustable louver with quad* Fixed Louver dimensional data Figure 3 Jamb width inches 3 Maximum width inches 48 Maximum height inches 24 Minimum height inches 12 Average blade spacing inches Frame dim. A inches Gal. steel gauge 22 Aluminum-- gauge 20 Copper -- ozs. 16 Protected metal--gauge 22 Stainless steel--gauge 22 4 96 96 24 4'A 1 20 18 20 20 20 5 96 120 60 S'i 1*4 18 16 20 18 13 6 96 120 60 i'A Vi 18 16 20 18 18 Figure 8 3'A 96 120 1 3 % Blades Frame 22 20 20 18 16 24 22 20 14 rant and thumb screw fastener and may be used when the louver is within easy reach of the operator. For operation of the blades a choice may be made of several types of operating or combination of operating mechanisms ac* cording to individual needs or building layout as shown in Figure 5, 6, 7 4 11. Fig. 6 is typical of louvers that are placed in the wall out of reach and are operated from the floor by means of a chain pull, a clip being provided to retain the chain holding the louver blades in the desired open position. A spring is provided for positive return of the blades to the closed position when the chain is released and, by the addition of a fusible link, this type of operation provides automatic closing of the louver blades for fire protection. Adjustable louvers Jamb width inches 3 4 Dimensional and construction data 5 6 Pivots! Other parts Max. width inches 48 72 72 72 Max. height inches 24 96 120 120 Min. height inches 12 24 60 72 Ave. Blade Spacing ins. 3'/l 4'A S'A V4 Frame dim. A inches %1 t'A IV4 Galvanized steel gauge 20 18 18 16 Brass Steel Aluminum gauge 18 16 16 14 Aluminum Aluminum Copper--ozs 16 24 * Brass Brass or Copper Stainless ste tl gauge 20 18 18 18 Stainless Steel Stainless Steel t Oilite bearings can be used for pivot mounting when required. * Maximum capper louver size 4 ft. W. x 8 ft. H. USHO 0034 * r combination louvers A combination fixed and adjustable louver, Fig. 9 permits adjustment to meet air intake require ments and still affords protection against extreme weather conditions. It consists of any com bination of fixed louver, either Fig. 3 or Fig. 8 with any type of adjustable louver as shown in Figs. 5, 6 or 7, assembled at the rear of the fixed louver. It is preferred that a space be left between the two louvers. \iIT louver operators wall louvers Paint When specified by the customer louvers can be painted at the factory with either a prime coat only or completely painted with primer and one or two coats of weather resisting paint. When galvanized steel Fig. construction is to be painted it is strongly rec ommended that a priming coat of Zinc dust primer be used as the first coat. When specified any procur able paint can be applied in either air dried or baked on finish. automatic louvers The Burt automatic louver Fig. 10 may be supplied in either a frame of struc tural angle or mounted in standard formed sheet metal as shown for the Burt fixed or adjustable louvers. Blades are constructed of sheet aluminum and mounted in oilite bearings. For equal opening the blades have an aluminum connector bar thus assur ing that the blades will open in unison. These louvers are ex cellent for fan intakes or discharge and when it is necessary the blades may be counter - balanced for the velocity pressure of the airstream. Fig. 10 The Fig. 7 Fig. 11 Where a series of louvers are mounted in the wall it is often desirable to operate a number of them with one mechanism. Fig. 7 shows a louver with the blades connected by means of rack and pinions to a galvanized steel pipe shaft mounted on roller bearings and connected to a grease filled worm gear drive. This may be operated either by a crank, a handwheel, or a chain wheel with chain carried to the operating point. For large series of louvers, motor operation can be used with remote control. Fig. 11 illustrates the use of a damper type motor for the opening and closing of louver blades. This type is very convenient for remote control and also for use where the louver is to be operated in con junction with a fan or other electrical apparatus. All necessary bolts and nuts are shipped with the mechanical operators together with installation drawings. screens Screens are folded sheet metal construction and are removable from the louver. Usually supplied in galvanized steel construction they may be made in any material procurable such as Aluminum, Stainless steel. Brass or Copper. Stock Screen is 16 mesh insect screen and Vi" or Vi" mesh bird screen. However, any procurable mesh can be supplied to customers specifications. Large screens are supplied with a center reinforc ing bar to give rigid construction. Screens woven into channel frames are also available. FOR MORE COMPLETE DETAILS, WRITE FOR BULLETIN 5PV-I7 Burt Manufacturing Company 13 U3H0 003438 general purpose louvers '.ndard sizes CROSS SECTION. Meeting the demands for an economical louver, a standard size 48" x 48" adjustable louver has been developed as shown in Fig. 1 and typical cross section in Fig. 2. Acceptance of this louver for pre fabricated steel buildings and other applications where a standard size louver may be used have made this standard size louver a production line item which assures quality construction at a minimum cost. Operation is by means of a pull chain with clip for positioning the blades for any desired opening and with spring attachment for positive closing of blades when the operating chain is released. jize MoCificarion This louver can also be supplied in single, double or triple rows of blades with wall opening widths of 22% ins., 45% ins. and 68% ins. together with vary ing heights of wall opening as shown in the table below. The dimensions as shown in the table must be adhered to as these louvers are a standard produc tion line item with Burt high quality built in to their manufacture. Construction Frame 2"xl%"x %" Steel angle. Blades 20 ga. Galvanized steel. Blade spacing 3% ins. Blade pivots 3.16" dia. Steel running through blade end to end. Single row of Blades C=22"s" Size No. B D Sq. Ft. Net Net opening Wt. lbs. GL-1-2 GUI-3 114 9' 4 1.0 13.5 15* 12* 1.5 16.4 GUI-4 19 16'2 2.0 19.3 GUI-5 22* 20' i 2.5 22.2 Gl-1-6 GUI-7 26'i 23 v\ 3.0 25.1 29:v 27'"* 3.5 28.0 GUI-8 GUI-9 33* J 31 4.0 30.9 37U 34* 4.5 33.8 Gl-1-10 40* 384 5.0 36.7 GUI-11 44* 41* 5.5 39.6 Gl-1-12 GUI *13 48 SI 45' i 6.0 42.5 49U 6.5 45.4 GUI-14 55*4 52 h 7.0 48.3 Size No. GU2-3 GU2-4 GU2-S GU2-6 GU2-7 GU2-8 GU2-9 GU2-10 GL-2-11 GU2-12 Gt-2-13 GU2-14 Gl-2-15 Double row of Blades Css4S-^" B 0 Sq. Ft. Net Net opening Wt. lbs. 15* 12vS) 3.0 29.8 19 16 4.0 34.3 22* 204 5.0 38.8 26'4 234 6.0 43.3 29* 274 7.0 47.8 33'4 31 8.0 52.3 37'$ 34* 9.0 56.8 404 44-S 48 3814 41% 45'-4 10.0 11.0 12.0 61.3 65.8 70.3 51H 55* 58* 494 52-4 56* 13.0 14.0 15.0 74.8 79.3 83.8 Size No. GU3-4 Gt-3-5 GU3-6 GU3-7 GU3-8 GL-3-9 GL-3-10 GU3-11 GU3-12 GL-3-13 GU3-14 GU3-15 GU3-16 Triple row of Blades BD 19 224 264 29* 33* 374 40* 44 H 48 51* 55'4 584 624 164 204 234 274 31 344 384 41* 45'4 49W 524 564 60 Sq. Ft. Net opening 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0 19.5 21.0 22.5 24.0 Net Wt. Ib. 43.5 49.7 55.9 62.1 68.3 74.5 80.7 86.9 93.1 99.3 105.5 111.7 117.9 engineering Service The Burt Manufacturing Company not only manu factures a full line of wall louvers for standard con ditions, but is willing at all times to estimate costs of special louvers in any procurable material to architects or engineers designs. Burt facilities and equipment enable us to construct such units economically and to the general satisfaction of the customer. Burt professional engineers will at all times be glad to be of service in matters pertaining to con struction and engineering data involved in preliminary design and use. ` IP 1 USHO 003439