Document 6wNp0O2a54gVo82VpNaq3kpRE

Air Conditioning Unit Heaters and Coolers D. J. Murray Mfg. Co. Wausau, Wisconsin Offices in Principal Cities MANUFACTURERS OF THE GRID UNIT Overall dimensions for installation of Cast Iron GRID Unit Heater Now made of high test cast iron in stead of aluminum heating sections, to cooperate with the war effort in conservation of vital materials. Patent applied for. Designed and tested to operate with stearp or hot water systems--for steam pressures from 2 lbs to 250 lbs. Engineered along the same lines as the standard GRID Unit which had aluminum heating sections and has been on the market since 1929. Cl (CAST IRON) SERIES GRID UNIT HEATER DATA Model No. A Dimension* B cD Motor E Hp Rpm Cl 1500 1 V/i I5>/, H'/2 16 23y, Cl 2000 22'/, 21s/. ny, 21'/, 2sy, 1/10 1750 1/6 1150 Cl 2504 2l'/l 26 13 26 35'/. 1/4 1150 Cl 2500 2m 26 13 Cl 3000 3zy. 31'/. 13 26 35'/, 31'/, 39'/, 1/2 1150 1/2 850 Cl 3000 32>/, 31'/, 13 31'/, 39'/, l'/2 1150 VoL Fan 1500 2600 3300 4350 6300 8000 Capacities 5 lb Steam 60* Air Approx. Shipping Weight Btu/Hr Final TMP Pipe Size* Supply Ret. 76500 107 275 w i'// 143000 206000 110 117 440 . 2* 660 r i'/,' iy,' 224000 107 675 1' i'/.' 332000 108 1050 -?h" iy/ 380000 103 1050 '2'// i'/,' Furnished also with 2 in. top supply connection inlet. NO ELECTROLYSIS TO CAUSE CORROSION Low maintenance expense. More air changes per hour. Positive "directed" heat. No leaks--no breakdowns. Lower outlet temperature. Larger air volume. No soldered, brazed or expanded joints, Open design that keeps units clean. Send for complete catalog information 918 Air Conditioning Unit Heaters and Coolers John J. Nesbitt, Inc. Holmesburg, Philadelphia, Pa. 11 Park Place, New York City 205 W. Wacker Drive, Chicago, 111. Manufacturers of THE NESBITT SYNCRETIZER Heating and Ventilating Unit, sold by John J. Nesbitt, Inc., and American Blower Corporation; NESBITT HEATING SURFACE with Dual Steam-distributing Tubes, NESBITT SERIES H HEATING SURFACE, and NESBITT SERIES W COOLING SURFACE, sold by leading manufacturers of fan-system apparatus; WEBSTER-NESBITT UNIT HEATERS and AIR CONDITIONERS (See page 1039), distributed in U. S. A. by Warren Webster & Company. All products listed are note available icith all-steel coils. NESBITT SYNCRETIZER--Series 400 The last word in heating and ventilating units for schoolrooms, offices, etc., where the continuous introduction of outdoor air is desired. For engineering data, get Publication No. 225-1; for "The Story of Syncretized Air," Publication No. 231-1. The Nesbitt Syncretizer is available with non-metaUic casing. Complete details will be supplied on request. Nesbitt Series B Thermovent For heating and ventilating auditoriums, gymnasiums, assembly halls, and similar .gathering places. Publication No. 227-1. NESBITT COOLING SURFACE Series W (Water) Surface with exclu sive drain feature For air cooling and cooling and de- humidifying (with cold water) or air heating (with hot water). Construct ed of copper tubes and plate-type alu minum hns. Avail able in either con tinuous or deanable tube type, in single sections having one to eight rows of Uncased Surface Showing Drain Header tubes deep, in three fin spacings, in eleven fin widths, and up to sixteen finned tube lengths. Sturdy galvanized casings. For particulars and engineering data send for Publications No. 233 and 233-1. Copper tube-and-fin surface for lowpressure applications. Perfectly adapted to close, continuous automatic control with modulating steam valves. Steam-dis tributing tubes within the condensing tubes carry the steam equally to the full section assuring UNIFORM discharge, temperatures even under a throttled steam supply; eliminating temperature strati fication; preventing tube freezing without preheaters; giving ideal system results. Cased or uncased units of many sizes and capacities. For full particulars and engineering data, send for Publication No. 237. For above advantages plus uniform distribution in extended fin lengths from 80 to 128 ins., specify Nesbitt Duplex Heating Surface with Dual Steamdistributing Tubes. Publication No. 237. Nesbitt Series H Heating Surface A lightweight, enduring, highly efficient blast-coil heating surface designed for use with steam pressures up to 200 lb gauge. Well suited to high-pressure as well as lowpressure applications. Seven types, each in eight fin widths and up to sixteen finned lengths--a total of 784 sizes from which to select. Send for Publication No. 238 for complete engineering data. 919