Document 70DxqpkMeO6DBBEnnOQkOV2k6

Heaters, Unit York Heating and Ventilating Corp. 1502 Locust Street :: PHILADELPHIA Unit Heaters--Unit Fans--Rotary Ventilators--Stationary Ventilators--Cyclone Collectors--Damper Quadrants--Blast Gates--Drying Trays--Radiator Brackets--Sheet Metal.Work and Light Structural Iron Fabrication. Dust YORK "WELDED COIL" UNIT HEATER SPECIAL FEATURES 1-- Standard Unit is direct connected to motor, by means of a flexible coupling. This costs no more than a belt driven unit. Standard motor speeds are used--see capacity table on next page. 2-- Balanced Double Inlet Fan of centrifugal type, with volute housing, distributes air over desired areas. 3-- Welded Pipe Coils, no joints to leak, therefore, no maintenance. Pipe coils are staggered, insuring efficient warming of air. Coils are tested to 300 lb. pressure and are good for 150 lb. 4-- Operates equally well on vacuum, low or high pressure steam. GENERAL ADVANTAGES 1--Low Power Consumption, balanced fan running on ball bearings, combined with straight path of air thru unit reduces power requirements to a minimum. The total cost of electric power over an entire heating season is negligible. 5-- Ball Bearings, self aligning, dustproof type, mounted outside the housing. Bearing maintenance is thus avoided and lubrication made easy. 6-- Unit Stands on Floor hence no over heating of upper part of building before lower part is heated. Heat zone is within ten feet of floor. 7-- Ventilation--Unit will heat and ventilate simultaneously, if desired. 2-- By removing a few bolts at each end of the unit, the entire housing, outlets, motor, shaft, coupling and fans, all assembled together, may be removed and the coils left bare as shown by the photo on the right. 3-- Base of the unit is open on all four sides, hence air is drawn from the floor, where it is. naturally coldest. This simplifies connection to outside .air when same is desired, for it can easily be made by a rectangular duct from any one side. 4-- Units can be arranged for suspension from ceiling or roof truss, or they can be mounted on special supports allowing headroom underneath. Complete Heating, Ventilating, Drying and Dust Collecting Systems, designed, built and installed 380 York Heating and Ventilating Corp. Heaters, Unit OPERATING ECONOMIES It is unnecessary to run York Unit Heaters con tinuously to obtain an appreciable amount of heat, as is the case with horizontal unit heaters or a blower system. In the morning the units can be run for a short time to bring the room up to the pioper temperature and to start the air in circula tion. The power can then be shut off and the circulation thus started will continue (although at a slower rate) due to the aif motion set up and to the stack or aspirating effect caused by the height of the unit. OPERATION Air enters the unit at the base from all four sides, passes .upward around the welded pipe coils, through the fan and then distributed by the out-, .lets in any direction desired. Unit may be auto matically controlled by a thermostatic switch. DIMENSIONS No. of Unit A B C D 25 47 17 13 85 35 68 17 17 85 *5. II 21 19 110 55 (1 29 22 no 60 II 29 23 M0 65 II 44 24'/, NO 75 II 58 24'/, 118 X H No. of Outlets 11% tv/* 2 11% 13% 4 19'/, 19% 2 19'/, 19% 3 19% l9'/4 3 24 I9*/4 3 24 23% 3 CAPACITIES Size Unit R.P.M. A.P. M. H. P. Motor Recirculating Air at 60* F. Entering Unit 5 Tbs. Steam Pressure B.t.u.* Final I >>- Cond. Temp. Per. Hr. Sq. Ft. Heating Surface Equiv. Sq. Ft. Direct Radiation Weight With Motor No. of Steam Conn. 25 1750 1160 35 1750 1160 45 1160 * 870 3000 2000 6050 4000 8300 6000 V* V* tv* Vi' 3 1 200,000 141,000 439.000 320.000 620,000 470.000 128* 135* 135 144 136 141 208 147 140 800 1150 456 333 2B0 1800 1900 645 489 360 2500 2450 55 1160 870 11700 6700 3 1 920.000 740.000 143* 149 958 770 520 3700 3300 60 1160 13300 5 870 9700 .2 1,020,000 815,000 141 148* 1062 848 520 4000 3500 65 M60 16300 870 13900 1.420.000 1.160.000 141 * 1478 147 ' 1208 800 6000 6000 75 870 21800 7% 690 17700 1.700.000 1.400.000 146 152 1770 1460 1040 7000 . 7000 2 Note--To get BASIC Rating (i. e.. 0 entering and 5 lb. pressure), multiply B.t.u. given by 1.35. See Guide 1925-26. page 223, for B.t.u. Constants. 381