Document wD1qQM583bVRz6g2Q35Ea5dvJ

ARCO No. 2001 EQUATROL FOR. STEAM VAPOR VACUUM ANY TYPE AUTOMATIC HEAT i\ \ THERMOSTAT \ 9lciV PRINCIPLE iSES BOTH ROOM AND RADIATOR EMPERATURES AS CONTROL FACTORS PROVIDES CONSTANT FLOW OF WARMTH L A INTERMITTENT FIRING The No. 2001 Arco Equatrol r The NEW Thermostat for accurate and uniform temperature control for Low-Pressure Steam, Vapor and Vacuum Systems In the No. 2001 Equatrol there is now available, for the first time, a means of temperature control that masters the special requirements of automatic firing. It is so entirely different in design and prin ciple of operation that it practically revolu tionizes the generally accepted theory of heat regulation. INTERMITTENT FIRING PROBLEMS 5rt Ifi current flows through the heater and gener- 'wl 'yjj - H[ I | ates ^ieat ^iere*n- This artificially raises the temperature of the thermostat to a point where it functions at its own set degree, hut . ?* 6 jP ip* in reality it "anticipates"1 the actual room temperature and stops the burner before the ordinary thermostat is satisfied. This type of instrument has effected a con siderable improvement over the ordinary thermostat. The advent of automatic firing created a new and serious control problem because the firing unit must operate intermittently and therefore is unsatisfactory if the "on" and "off" cycles are of too long duration, because during the "on" cycle the radiators get too hot and the room temperature overruns, and dur ing the "off" cycle the radiators cool down practically to room temperature and the room gets too cool, particularly at the lower levels. The ideal objective is to keep the radiator tem perature constantly at a point which will main tain desired room temperature with any given outdoor weather condition. To accomplish this result with intermittent firing, there must he more frequent cycles of firing than is generally the case with the ordinary room thermostat. ARCO EQUATROL THE LOGICAL SOLUTION The Arco Equatrol. however, goes a step further in that it uses the radiator itself as the anticipating or compensating factor. This enables the Equatrol to adjust itself auto matically to any system in any weather. Be cause the instrument is affected directly by radiator temperature as well as room tempera ture. it maintains radiator temperatures within close limits--thus preventing fluctuations of room temperature. As the weather changes it automatically raises or lowers the radiator temperature. No manual adjustment, other than setting the room temperature at the de sired point, is required. PRESENT METHODS Several methods have been de vised for this purpose. Currently the most popular is an electric heater ele ment placed in proximity to the ther mostat. ^ hen the burner starts, the SIMPLIFIES WIRING The Arco Equatrol is wired exactly as any ordinary low voltage thermostat. It can be used either in two or three wire circuits. There is only one stand ard instrument. Coryncrt 1C'3T. Aitrinn Kaauior u 14516 f How The Arco Equatrol Operates The thermostat replaces the ordinary room thermostat. and is installed in the same manner. The capillary tube is run in the wall down to the floor and under the floor to the nearest radiator, preferably in the room where the thermostat is located. The four bulbs "b are clamped on four sections of the radiator at the back, or in four locations between the fins of a convector, so as to obtain the average temperature of the radiator. The electrical con tact points are in the thermostat. The contacts are wired to the firing device in the usual manner. The thermostat responds to both room and radiator temperatures. The Equatrol is regularly furnished with 20 feet of capillary tubing, hut can be furnished with 35 feet on special order. THE LOGIC OF USING RADIATOR TEMPERATURE Inasmuch as the ideal objective of con trol is to maintain a radiator temperature that will supply just the right amount of heat to keep the building at the desired temperature it is most logical that the actual temperature of the radiator itself should he included as a control factor. The Arco Equatrol does include the radiator temperature along with the room temperature as a controlling factor, and in so doing differs fundamentally from other room thermostats. THE EFFECT OF USING RADIATOR TEMPERATURE The radiator itself is used to "anti cipate." The radiator heats anil cools at a rate faster than the room. Therefore the radiator bulbs of the Equatrol serve to turn the heat on and off sooner than if dependence is placed entirely on the room temperature. In fact the radiator bulbs alone can keep the radiator tem perature in such close limits that the room temperature does not vary, and we have a steady, even flow of warmth from the radiators which are maintained at just the right tempera ture to heat the building to the desired degree. Abo\e is a one-pipe steam installation, but the Equatrol book-up is tbe same for two-pipe or vapor systems. T! ie function of the room bulb of the thermostat is to sense a change in weather. \Hien a change in weather occurs, the room temperature rises or falls a fraction of a degree and this causes the radiator bulbs to control at a lower or higher temperature. In other words, the Arco Equatrol automatically adjusts the radiator temperature in accordance with the weather as required to maintain desired building temperature. GENTLE, CONTINUOUS FLOW OF WARMTH The net effect is a constant gentle regu lated flow of warmth, both convected and radiant. The convected warmth maintains con stant circulation of air in the rooms, thereby preventing air stratification and reducing the temperature difference between floor and ceil ing. The prevention of stratification, the provi sion of a gentle flow of radiant warmth, the elimination of "cold 70" and overheating produce an indoor environment unequalled for comfort and health. 14517 I CHARTS INDICATING THE EVENNESS OF EQUATROL CONTROL r Radiator Temperatures ORDINARY THERMOSTAT Tlii~ chart shows the wide variation in average radiator temperature with or dinary room thermo stat control. Note that radiatortemperaturc falls almost to room tcmpcraturcon each cvcle. This causes "cold TO." Note also that average radiator temperature rises to about 200 de grees on each cycle. This causes "overshooting." ARCO EQUATROL This chartshows hois closely the radiator temperature is held by the Equatrol. The radiator stays warm -- no ``cold TO." It never gets too hotno "overshooting." This precise regula tion assures ``warm feet and a cool head" by keeping the air moving and maintaining a constant, even flovv of radiant warmth. ORDINARY THERMOSTAT This chart shows fluctuations in room temperature of sev eral degrees with the ordinary room ther mostat-- even though the operating differ ential of the thermo stat is one degree. Room Temperatures ARCO EQUATROL This chart shows the absolutely even room temperature main tained by the Equa trol. This uniform control means abso lute comfort at all times, without fuel waste in overheating. The Equatrol is not just another thermostat. It marks a revolutionary advance in automatic heating. In combination with radiator heating and automatic firing, it produces an indoor environment which for comfort and health, cannot be approached by any other means. Summary of Features 1. Attractive appearance--new. modern styling. 6. Maintains constant even flow of warmth. 2. Universally adaptable. Can he used with oil. stoker or gas firing, on one or two pipe, -team, vapor or vacuum sv stems. 3. No special wiring or circuits or heater ele ments required. \l ired exactlv as anv ordi nary thermostat either tvvo or three wire. 7. Maintains air circulation and reduces tem perature difference between floor and ceiling -- keeps feet warm without overheating upper portion of body by preventing stratifi cation of room air. 8. Increases firing efficiency: saves fuel. 4. Automatically adjusts itself to anv building, any system, any weather. Installer avoids expense of returning to job for adjustments. 5. Eliminate- "overshooting" and "cold TO". 9. Positive, snap action contacts -- absolute 1\ no fluttering -- yet extreme sensitivity. 10. Generously proportioned silver contacts in sure long, trouble free life. 14518 SPECIAL NOTF..-- The F.quatrol H hicped complete rendv to install, and regularly furnished with a 2 wire cable and 20 ft. of c:ipill;irv tulunir. If .1 mre cable is required for Sene 20 connection.--with zone valve for instance.--the order should so state 'Peciricalh. C.ipillnrv tubina can ako be furnished in 35 ft. length on special order. Turin NV ' ,..v -*.m - -.;t - . p -prints ir I' \ : ,Y 'Sy ri %' ' v\>, >tt;' - "".i-> sV' - K * i'f *-.' (Srt,lrml,cfi |9)B| Arco-Detroit Multiport Arco-Detroit Hurivent Ideal Variport Airid Favorite Ideal Vacuum Ideal Vac-Airid Ideal Quick Vents Ideal Air Line Ideal Vento Vents Arco Distributor Compression Air Valves IDEAL-ARCO ACCESSORIES AIR, VACUUM AND VENT VALVES For Venting Radiators and Mains on One-Pipe Steam and Vacuum Systems PLAINTIFFS i .-gEXHIBflp^ ` A.ffjav. - Y- IDEAL FAST VENTING SYSTEM VENTING RATE OF LEADING AIR VALVES *7<4e ue+itUuj, tele a the. A/a. 300 Mullujianl iA mate tUa*t 3 timei. gA (jteat gA that of tUe Goeteuje gAa value- a^ alhee malzel. *Alte ve*tli*iq. teJe a^ the A/a. 861 <Muteue+it at U a^,. iA mate them 23 timeA gA cyieal gA tltal a^ the otelituitef. vent value. The latest development in the science of venting is the IDEAL FAST-VENTING SYSTEM. It is a time-saving necessity on auto matically fired one-pipe steam systems having oil burners, gas burners or stokers. It cuts down service calls. And it vastly improves the performance of hand-fired hard-fuel jobs. 14519 This is one of a series of folders on The Complete Line of Ideal* Arco Accessories, which describe and illustrate separately: All types of Air and Vent Valves; Packed and Packless Radiator Valves; Regulators and Controls; Cate, Globe and Check Valves: Direct and Indirect Water Heaters; Thrush, McDonnell & Miller, Excelso, Taco and Vinco Products; Miscellaneous Items, including Gauges, Thermometers, Plates. Tanks, Boiler Furnace Cleaners, etc. r c ' Aw rt* . IDEAL FAST VENTING SYSTEM v > for Maximum Efficiency No. 300 ARCO-DETROIT MULTIPORT ON RADIATORS No. 861 ARCO-DETROIT HURIVENT ON MAINS Automatic Heat Demands Special Venting The rapidly increasing use of automatic heat, with its "all-on" and "aLl-off" firing periods, has radically altered the requirements of the venting system. Mains and radiators must be vented every time the burner comes on, and both venting and heating must be accomplished before it goes off again. The thermostat, which is usually located in a room near the boiler, is often satisfied before remote radi ators are vented. The old system of venting cannot cope with this situation for the simple reason that ordinary air valves cannot be made to exhaust the air from remote radiators fast enough. Result -- cold rooms. The Ideal Fast-Venting System permits all of the radi ators to heat quickly after the burner goes on. Makes possible the uniform heating of all radiators. Prevents cold rooms upstairs. Assures the best performance from a good burner or stoker. Eliminates subsequent servicing. Gives the "balance" the customer requires. The Ideal Fast-Venting System is applicable to any one-pipe 6team job, old or new. It includes Arco-Detroit Multiport Air Valves for radiators and the No. 861 Arco-Detroit Hurivent for mains. These large-port air and vent valves begin to oper ate at the slightest increase in pressure. The whole system is thus opened up wide for the rapid discharge of air. As steam is generated it has immediate access to the radiators and becomes effective at once. No. 300 Arrv-helroil Multiport 861 Arco-Detroit Hurivent MMIltn I LIST PRICE 300 Ancle Conneeiion thread 302 Straight Shank '-h " male thread 303 Straight Shank " male thread S2.00 2.45 2.85 No. 300 Arro-Detrolt Multiport (ntployi the patented Automatic Modulator, which permita venting at full port opening under approxi mately 2 oa. pressure, and above that auto matically reduces opening. Venting rete more than 3 times that of ordinary air valvee, Mstirnum port may alao ba adjusted and permanently sat by hand through an excep tionally wide range. Bakelite jacket protects working parti and prevents clogging from out side. Attractively finished in luetrous black with chromium trim. Made in angle and straight shank patterns for elthsr exposed or enclosed radiators. NUMBER 861 thread 862 thread For Vacuum LIST PRICE $5.60 6.50 No. 861 Areo-Detroit Hurivent ie designed to veal meina with utmoil speed so steam can roach radiators with minimum frictional loss. Full Vt" venting port combined with iogaoloui internal construction permits almost instant venting without steam or water leakage. Similar In operation to No. 861. but beside* providing speedy, complete and dry venting of all oir, prevents the return of the air into the mains whan lbs system cools. IDEAL VARIPORT VALVES 14520 Outstanding feature of No. 5000 Ideal Variport Air Valve is the adjustable vent port, which permits setting of orifice to provide exact venting rate required. Thus it is possible to secure complete venting of all radiators almost simultaneously, and with intermittent automatic firing assure a more balanced job. No. 5150, similar to No. 5000, has added special features designed for vacuum systems. Per mits free escape of all air but prevents its return, creating a partial vacuum in the system and enabling radiators to retain their heal longer. The retention of vacuum during carry-over periods, with intermittent automatic firing, effects economy. With either valve, removable cap protects adjustment. Operation is positive, quiet, completely automatic. Does not expel steam or water. Attractive chromium finish. LIST PRICES: Stork Mock Slock Stork No. SOOO. No. 3002. No. 5130. No. 3132, for Steam. Vu" threaded connection.................................................................................................. Straight Shank Convector Type--Steam, threaded connection............................ for Vacuum. Vit" threaded connection............................................................................................... Straight Shank Convector Type 1 V acuum male and female connection 81.40 1.80 2.95 3.S0 E * iu w rTrT* At-- IDEAL AIRID SIPHON AIR VALVE For Venting Low Pressure Steam Radiators NUMBER 500 aciloo (broad 502 Straight Shaok ^4* thread 501 Government Holder LIST PRICE SI 15 1.5a .75 DESCRIPTIONS No. 500 Airid is the ouUUnding qualilv air valve of the medium priced non-adjustable class. Its popularity has been achieved through years of successful performance, under all operating conditions. It vents rapidly, functions quietlv, and does not hiss* sputter or leak. Even valve flooding does not interfere with suecessful radiator venting, because the special siphon quicklv frees the valve of water. The Airid is made entirely of metal. symmetrically designed and chrome finished. The standard adjustment cunnol be tampered with to affect its operation. A perfect valve for perfect service. No. 502 Same as above, but with Straight Shank, V%" thread. No. 501 Government Holder attachment to prevent removal. Regularly packed in attractive display boxes--12 to a box. Weight of box of 12--4 lb. FAVORITE AIR VALVE For Venting Low Pressure Steam Radiators I 525 | Angle Con* } nectlon j I thread I I 526 j Straight Shank ' (bread 527 Straight Shank " ihread 528 Straight Shank female male thr#at .60 .80 .80 .95 The Favorite, No. 525, ia a popular priced air valve, well known for its dependable operation and time-tested quality. It has a thermostatic float and siphon, is non-adjustable and long lasting. All metal, nicely finished. The straight shank types Nos. 526, 527 and 528 have the same internal construction as the No. 525. VACUUM VALVES THE No. 515 IDEAL VACUUM VALVE Eliminates the Air but Stops Its Return 2.70 3.50 Skilful design and engineering account for the excellent per formance of this valve. It can be attached to any steam radiator ! and, by removing rapidly all the air and preventing its return. I makes it possible for the radiator to heat faster and to hold the heat longer after fire is low. j Oporntion: VJten glr Kai b**n ramornl, tha temperature of ataara enterlna j tha valva atpaa<ii tha harmaliaallp aaalad pa wlthU tha float. Tha roaultani i praaaura flat** tha diaphragm* aouaiog tha aaatlag pis to alo*a tha aai port. ThU atop* tha aacapo of air. watar aod ataam from radiator--aUo pro* i vanu tha return of air through tha valve lata radiator. A* ataam praaaura J decrease*. a partial raeuum forma within tha radiator ood valve, hut NOT I within tha bellows, which latter la coated Independently by aa air tuho beyond I tha cloead la coat. Haora thara ia always atcooapharta praaaura wlthle the | bellow*. aod, with a partial varuum la tha valve, tha praaaura differential uu*a. tha bellowe to oapaod. osartlna a strong praaaura hath oo tha diaphragm aod seating pio* aaaiiog the coot hole aod maintaining tha vacuum. Both old and new jobs offer a wide field for the use of this valve, which speeds up the heating and effects extra economy. The No. 516 Ideal Vacuum Valve has a straight shank but otherwise is identical in construction and function to the No. 515 angle type. IDEAL V A C AI R I D VACUUM VALVE For Venting Low Pressure Steam Radiators --but Self-Sealing Against Return of Air 510 Ac|1t Coo* Beetles Vb" thread 1.80 512 | i Straight Shank i H' thread j 2.20 This valve is similar in design to the Ideal Airid with the added feature of the vacuum seal. The Vac-Airid is made entirely of metal, of symmetrical design and highly finished. Moderately priced. 14521 GUARANTEED EOEQNE IDEAL FLOAT QUICK VENT -- IDEAL VAC-VENT \ NUMBER LIST PRICE DESCRIPTIONS 821 *4* Iron pip* thread con nection S4.45 Ideal Float Quick Vent No. 821 Designed for the free venting of mains, coils, Vento heaters, etc., or any steam piping where it is necessary or desirable to expel air quickly without developing back pressure. Their use on basement piping opens entire system to the atmosphere until steam or vapor reaches the valves, thus insuring speedy and even circulation. The vents close against water. Improve both performance and economy. Accurately and permanently set at factory. 822 Iron pipe throad cob- unction 5.25 Ideal Vac-Vent No. 822 The Ideal Vac-Vent permits the rapid venting of air from the piping system in the basement, at the same time preventing its return. It closes against water. The air seal in the Vac-Vent bars the re-entry of air into the piping system. Invaluable for providing the benefits of "below atmosphere" steam heating plants. IDEAL QUICK VENTS-Nos. 530-53 1 -532 ill 11 Y 530 Straight Shnak thread 531 Straight Shank V4* thread 532 Straight Shank H" famala ^4* mala thread 1.55 1.65 1.80 A most satisfactory means of venting air quickly from ends of steam mains, tanks, low pressure feed water heaters, hot water generator and similar equipment. Radiators heat faster with these vents on mains. Completely automatic. Non-adjustable and cannot be tampered with. Cannot leak water. All metal. Moderately priced. IDEAL QUICK VENTS-Nos. 815-820 Cillf r H 815 820 %' 2.40 2.40 | For venting mains, long runs of pipe, indirect stacks, drop risers, etc., where air must be quickly expelled, but where valve need not close against water. On low pressure steam jobs radia tors will heat quicker, under less pressure, by venting piping I system with Ideal Quick Vents. Operates by volatile liquid con tained within expansible member which has diaphragm at top and bottom, giving ample movement of stem. No adjust- j ment. All metal. Nickeled finish. Will last indefinitely. | Weight of 6 packed--2 lbs. IDEAL AIR LINE VALVE No. 816-IDEAL VENTO VENT No. 817 LIST PRICE DESCRIPTIONS i 816 Hco'nrnaedcitaiotnor II tamaU union ar outlet S2.90 817 Canaactlon to baatar %* j pip* aiaa. 1 Ouilaiahaa<4* female union lar air Una 3.95 No. 814 U for venting (team radiators where drip line, air line or vacuum air line i used. Operates on same general principle as the Ideal Airid. Is always open to passage of air but closes tightly when steam reaches it. Should water reach valve, it remains open for its passage to the drip line. Sensitive, made entirely of metal, non-tamperable. No. 817 is for use on Vento Heaters and Blast Coils. Made especially for removing the air from Vento Heal ers under low pressure only. Has a larger venting port-- A' diameter. Does not close against water. All-metal. Nickel-plated. No adjustment. Can be set in any position. NUMBER I LIST PRICE 865 threaded j connection S5.90 ARCO DISTRIBUTOR No. 865 For use on automatically fired vacuum systems equipped with vacuum valves with adjustable ports. Provides even distribution of steam on each firing period. At a point in the vacuum where no more heat can be delivered to radiators, the distributor opens and allows entry of air into radiators before the next period of venting. TTiis action insures even distribution of steam with controlled air venting. Arco Distributors should preferably be attached to main, between boiler and first radiator. Brass finish. ------------------- ---------------------------------- 14522 B3fti UH 5i" J No. 520 hna wood wheal ; .NUMBER 521 <R*r> j 520 Wood Whool LIST PRICE S3.00 per dot. $4.00 per doe. COMPRESSION AIR VALVES For removing lir by hand from hot water radiator. Well made and accurately machined. Nickel-plated. Two keys regularly furnished with each dozen. Weight packed: No. 520--1^ per doz. No. 521--1*4 lbs. per doz. }'orm No j j 4 -- ',M-- 'j/3s--CT