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Warren Webster & Company Heating Systems Steam Unit Heaters WEBSTER-NESBITT UNIT HEATERS Manufactured by John J. Nesbitt, Inc., Philadelphia 36, Pa., and distributed solely through Warren Webster & Company, Camden, New Jersey. Designed to circulate large volumes of air at comparatively low temperatures, assuring quick heating. Ratings of Webster-Nesbitt Unit Heaters are based on tests made in accordance with standard test code of Industrial Unit Healer Association and A.S.H.V.E. Fig. 1. Standard Propeller-Fan Type PROPELLER FAN UNIT HEATERS Designed to incorporate tour characteristics essential to both proper application and satisfactory performance: 1.) Selective range ofsizes. Manufactured in nine sizes. Heating capacities from 34,700 to 338,000 Btu per hour. Air deliveries from 470 to 4800 cfm. 2.) Quiet Operation. All: fans have blades of exceptionally large areas and of a shape to impart a gradual acceleration to the air stream. Ample spacing is maintained between the fan and heating element. Motors are of sleeve bearing type equipped with isolators. 3.) Dur able lightweight Healing Elements. Extended fin-and-tube type, constructed of copper condensing tubes and plate-type aluminum fins. 4.) Modern Casing Design. Compact sus pended type. Pub. W-N 126- GIANT BLOWER-FAN UNIT HEATERS Large capacitity unitB for: heating and/or ventilating, free delivery or static pressure, steam or hot water systems. Nine basic sizes, each with one of three standard steam coils, three distributing-tube coils, or with a single, two, three, or fourrow 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; THERM-ADJUST--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. New Pub. W-N 135. Fig. < Blower-Fan Type LITTLE GIANT UNIT HEATERS Fiy. S DovmrBlow 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. Non-ferrous all-purpose heating elements designed for steam pressure up to 200 lb gauge, saturated, and sturdy casings of modern design. Heating capacities range from 28,500 to 510,000 Btu basic steam ratings. Pub. W-N 134. SERIES "R" UNIT HEATERS A neat, furniture steel cabinet enclos ing a copper-tube, aluminum-fin heating element adaptable for steam or forced hot water systems; and two to five centrifugal fans belt-driven from an elec tric motor. A variable-pitch motor sheave permits low or high speed fan operation. Universal design offering wide flexibility and quiet operation. Available in four sizes. Air deliveries with standard drive range from 518 to 1890 cfm. Steam heating capacities from 158 to 588 EDR. Pub. W-N 133. 1564 I J Heating Systems. v*i?es. Air The Dole Valve Company Main offices and Factory: 1933 Carroll Avenue, Chicago 12, 111. WATER MIXERS CyX /? THE ALL STAR LINE AUTOMATIC REGISTERS - A AND VACUUM VALVES "DOLE AUTOMATIC REGISTER" FOR FORCED WARM AIR HEATING SYSTEMS PROVIDES INDIVIDUAL ROOM TEMPERATURE CONTROL 1. Operates thermostatically from room air temperature. 2. Extremely Sensitive: Modulates output to meet heat requirements. 3. Completely self-contained; no wires to run--no bulbs to locate--simple to install. Replaces standard forced warm air registers. 4. Simple setting of the thermo-dial assures room temperature as desired-- corrects many unsatisfactory heating in stallations. Materially improves any forced warm air system. An automatic balancer. 5. A fully automatic zone control for every room. Dole Automatic Registers are available in two sizes and will tit the following stackhead openings: 10' will fit--10' x 4', 10' x 5', 10* x 6'. 12" will fit--12" x 4', 12" x 5", 12" x 6". With an adapter 12' will fit--14' x 4', 14" x 5", 14" x 6". An adapter is available for baseboard installation of these Controls. Temperature Selector Dial DOLE AIR AND VACUUM VALVES Dole No. tO Fully Automatic Hot Water Air Valve The Dole line covers every venting need on one pipe steam and hot water heating systems and offers a complete choice for every purpose. DOLE WATER MIXERS Dole Water Mixers provide safer, tem pered domestic hot water on all tankless heater and storage tank installations. Available in 3 sizes, in., % in., and 1 in. 1565 Si liip i i ik !S-; IIp ur; Ml