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Air Conditioning JUd'c^SST JOHN J. NESBITT, INC. Philadelphia 36, Pa. NESBITT SILL-LINE RADIATION High-capacity perimeter heating in an attractive 16-gauge wall-hung enclosure for use in schools, hospitals, offices, showrooms, etc. Made in five casing styles with one-piece back panel for true, rigid alignment; seven lengths from 2 ft to 8 ft; choice of finishes. Full range of accessories and sleeves eliminate on-thejob cutting. Eight heating elements with CODE approved ratings from 2.9 to 12.1 sq ft EDR. Publication 102. NESBITT HEATING AND COOLING SERIES W. Water surface for air-cool ing, dehumidifying or heating. Copper tubes, aluminum or copper fins. Wide range of sizes in three types: Type WD (continuous tube with exclusive freezeproof drainability feature, and sur face pitched in the casing). Pub. 246. Type WB (continuous tube sections for booster-heating or air-cooling relatively small air volumes but without drainabil ity feature) and Type WC (standard Series W cores pitched in the casing; cast iron headers removable cover plates to permit cleaning, single or double serpen tine circuits.) Pub. 255. SERIES H. General blast coil surface for heating, ventilating, air-condition ing and drying in both high and lowpressure systems. Copper tubes, alum inum or copper fins. Seven types, full range of sizes. Pub. 248. SERIES T. With Trombone-shaped steam-distributing tubes that eliminate stratification and all danger of freezing under modulated valve control. Gives uniform temperatures over the entire capacity range. Ideal for heating and ventilating and for preheating outdoor air. Copper tubes and headers, aluminum or copper fins. Type TO with steam and condensate connections at opposite ends, Type TS with connections at same end. Fin leifgths from 12 in. to 120 in. Publica tion 805. NESBITT GAS-FIRED UNIT HEATERS Modern, attractive direct-fired unit heaters in seven basic models ranging in capacity from 25,000 to 200,000 Btu heat input. Made of die-formed furniture steel finished in heatresistant, baked-on enamel. Low-speed motor equipped with thermal overload protection. Quiet operating fans; dieformed adjustable louvers. Equipped with automatic con trols and safety pilot. Units are A.G.A. approved and listed by Underwriter's Laboratories. Publication 280. NESBITT BASEBOARD RADIATION A new approach in baseboard design. Combines an enclosure of unusual beauty with a heating capacity ample to achieve true perimeter heating (4.1 sq ft EDR per lineal ft). CODE approved steam and hot water ratings. Copper tube, aluminum fin element. Furniture steel cabinet in 4, 5, 6, 8 ft lengths. Pub. 272. Nesbitt Baseboard Radiation 1294 Air Conditioning Unit heaters and Coolers JOHN J. NESBITT, INC. Philadelphia 36, Pa. NESBITT UNIT HEATERS are designed to circulate large volumes, of air at comparatively low temperatures, assuring quick heating. Ratings of Nesbitt Unit Heaters are based on tests made in accordance with standard test code of Industrial Unit Healer Association and ASHVE. Standard Propeller-Fan Type PROPELLER FAN UNIT HEATERS Featuring universal heating elements of continuous tube design, each size unit gives a comparable range of capacities with either steam or hot water. Made for high temperature drops, low water rates for installation economy. Small physical size for comparable Btu output sores space. Sturdy steel casings with baked-on gray-green hammertone finish for lifetime beauty. Flush-to-ceiling mounting permitted by male pipe connections extending through casing rear. Sealed-for-life motors in most models. Balanced aluminum fans with large blade areas assure gradual, quiet, efficient air delivery. Eight basic sizes, 24 models, capacities from 15,000 to 335,000 Btu per hour. Sound rated within lowest classifications of new Bulletin IS, I.U.H.A. Sound Test Code. Pub. 401. GIANT BLOWER-FAN UNIT HEATERS Large capacity units tor: heating and/or ventilating, free delivery or static pressure, steam or water systems. Twelve basic sizes, each with one of three standard steam coils, three distributing-tube coils, or with a single, two, three, or four- row hot water coil. Air deliveries from 2000 to 28,000 cfm. Basic steam ratings, 83,000 to 1,735,000 Btu/hr. Hot water capacities from 50,000 to 2,460,000 Btu/hr, 1800 to 3400 fpm. Control may be STANDARD--periodic fan operation; THERMADJUST--continuous fan operation with thermo stat-controlled dampers; or VALVE-CONTROLLED--with thermostat controlling steam supply. Horizontal-suspended, wall, inverted or floor-mounted with wide choice of cowls, fans, dampers, filters and other accessories. Pub. 404- Giant Blower-Fan Type LITTLE GIANT UNIT HEATERS Little Oiant Down-Blow Type Adaptable to a wide variety of applications and field condi tions. Eight basic sizes, each with a choice of two (some units three) heating elements. The three smaller sizes are of the blow-through type, having lower outlet velocities generally intended for the lower mounting heights of commercial in stallations. These sizes in down-blow type only. The five larger models are of the draw-through type; produce the high discharge velocities necessary to blow long distances. These five available for either horizontal or vertical down-blow. Durable lightweight Heating Elements. Extended fin-andtube type, copper condensing tubes and plate-type aluminum fins. Steam capacities from 28,500 to 510,000 Btu. Pub. 402. SERIES "C" UNIT HEATERS The new Series "C" permits complete flexibility of design and operation. Units are available for floor mounting, hori zontal, wall or inverted applications and can be installed fully recessed-, semi-re cessed or free standing. The discharge or intake can be face, top or bottom-- direct or with ducts. Available in five basic sizes--46 basic capacities ranging from 25,000 to 148,000 Btu per hour. For steam or hot water. Pub. 408. Series "C" Cabinet Heater- 1295