Document MMyZXNZgQ2jde0kBnL9Ody28V

Heaters, Unit York Heating and Ventilating Corp. 1502 Locust Street :: PHILADELPHIA Unit Heaters--Unit Fans--Rotary Ventilators--Stationary Ventilators--Cyclone Dust Collectors--Damper Quadrants--Blast Gates--Drying Trays--Radiator . Brackets--Sheet Metal Work and Light Structural Iron Fabrication. YORK "WELDED COIL'* UNIT HEATER ' York Unit with motor directly coupled tc fan shaft. York Unit with motor belted to fan shaft. Furnished with or with out motor and belt guard as illustrated. Final i Temp. Cond. ; per hr. | R. P .M . | A. P. M. ' H.P. Motor Final Temp. Cond. 1per hr. 1 Final Temp. No. 2 UNIT HEATER For Steam Pressure of 5 lb.' Recirculating-Air at Basic Data--Air at s o 60 F. Entering Unit 0" F. Entering Unit S a.' oi a; < CL X B.t.u. per Hr. 1 B.t.u. *S g3 S. per Hr. 590 7160 660 2500 650 3110 nsn 4200 1425 5200 V? 165,000 139* 171 lb. 226,000 108" 234 lb. 186,000 137" 193 253,000 104" 262 216.000 131 224 296,000 97" 306 1 266.000 124" m 368,000 88" 382 * 2 [314,000 120 235 * 430,000 83" 445 No. 3-A UNIT HEATER For Steam Pressure of 5 lb. Recirculating--Air at 60" F. Entering Unit Basic Data--Air at 0" F. Entering Unit B.t.u. per Hr. B.t.u. per Hr. SI 590 4450 680 5100 850 6300 1150 8500 1425 10,400 f IV? i 3 5 340,000 139 352 lb. 368,000 133" 381 " 426,000 132" 442 " 530,000 174" 548 " 625,000 120 647 " 460,000 107" 477 lb. 500,000 102" 517 580,000 97" 600 * 720.000 87" 745 650,000 81" 880 No. 2-A UNIT HEATER For Steam Pressure of 5 lb. 590 2700 AW) 3040 Vi 1 1220,000 040,000 145" 142" 228 248 lb. * '300,000 *26.000 116" 112" 310 3 38 lb. * 850 3680 1 1270,000 135" 280 * (366,000 103" 379 * 1150 4800 2 1324,000 129" 336 * 440,000 94" 455 1425 5800 2 375,000 126" 388 * 1510,000 89" 528 * No. 3 UNIT HEATER For Steam Pressure of 5 lb. 590 3850 V, 280.000 135" 290 lb. 381,000 102" 395 lb. 680 4450 1 310,000 131" 321 B 422,000 97" 436 850 5540 1 356,000 176" 371 " 490,000 90" 507 " 1150 7500 3 450,000 120" 465 " 620,000 83" 642 1425 9300 5 520,000 116" 540 " 716,000 77" 740 " ; No. 4 UNIT HEATER For Steam Pressure of 5 lb. 590 8700 7 68(1 10,000 3 850 12,500 5 930 14,000 7V? 1030 15,400 10 610.0001132" 631 Ih 670,000128" 693 " 790,000124" 820 860,000il22" 890 " 930,000:i2l" 963 " 830,000 98" 660 th 910,000 93" 940 1,060,000 86" MOO 1,170,000 84" 1210 1,260,000 83" 1300 " No. 4-A UNIT HEATER For Steam Pressure of 5 lb. 590 10,300 3 680 11,900 5 850 14,800 7V? 930 16,500 10 1050 18,200 15 810,000:140 R3R lb 895.0001136" 925 I,040,000|l3l" 1070 1,130,0001129" ! 170 " 1.210,00011271 1250 1,100,000 109" 1140 lb 1,220,000 104" 1260 1,430,000 97" 1480 * 1,540,000 94" 1390 * 1.650,000 91" 1710 " Ratings on larger sizes and special units will be furnished on request. Complete Heating, Ventilating and Dust Collecting Systems; designed, built and installed. 338 York Healing and Ventilating Corp. Heaters, Unit MECHANICAL FEATURES 1. Welded Pipe Coilt--no joints from inlet to outlet. Coils are tested to 300 lb. pressure. Good for 150 lb. working pressure. 2. Supply and Return Headers, to which the coils are welded, are both inside the unit housing--hence beat radiated from the headers, goes into the air passing through the heater. 3. Steam is admitted to the top header, which runs the full length of the coils--it then passes through the coils to the return header at the bottom, where it is collected as condensed. 4. Pan Wheel, of the efficient, double inlet type, is mounted on ball bearings--insuring freedom from vibration. 5. Ball Beannot--self-aligmng, dustproof type, mounted outside the fan bousing and not in contact with hot air. Their location permits oiling without removing fan housing. 6. Base of the Heater is open on all four rides, hence the unit draws its air from the floor where the air is naturally coldest. This simplifies connection to outride air supply when same is desired for it can easily be node with a rectangular duct of ample rise, from any one ride. INSTALLATION FEATURES Welded Coils of Number 2.2-A and S Units. Num ber 3-A and larger Units have a double set of coils, twice the number of headers illustrated. OPERATING FEATURES 1. Low Power Requirement*--the balanced fan, running on hr>tf bearings, reduces power requirements to a minimum. Path of air is straight through the heater--there are no baffles, etc., to cauBe back pressure. 2. Maintenance it Low, coils are welded to the headers-- there are no joints or valves to leak causing rust, damage and necessitating repair. 3. In Mild Weather--the unit can be run for a short time to bring the room to the desired temperature and to put the air into circulation. Then, the power can be shut off, and * circulation thus started will continue (although at a slower rate) due to the air motion set up and to the stack or aspirating effect caused by the height of the unit. 1. Fan may be belted to line, shaft or motor, or directly coupled to motor. 2. Pan Pulley is located near the top of the unit, which makes connection to line shafting easy. This is also con venient for belting to electric motor fastened to ceiling,, wall or column, no belt guards are required with this arrangement The belted unit may also be arranged with motor mounted on bracket attached to the beater. 3. The Unit stands on an angle iron' base, no extra foundadations are required. 4. The Unit occupies a floor space greater in length than in depth, making it easily adaptable to unused floor spaces. 5. These Units can be arranged far suspension from ceiling or roof trusses, or they can be mounted on special ex tended supports, allowing underneath headroom. 6. Operates equally satisfactory on vacuum, low pressure or high pressure steam systems. SPECIFICATIONS Equiv. Outlet No. No. of Sq. Ft, Sq.Ft. Size of Heat. Direct Outside Unit Dia. Face Con. Sur. Radi of ation Angles Size Base Angles WEIGHTS Unit Heaters Complete No Motor Unit Heaters Complete With Motor Approxi mate Height Inches Inct. Outlet . Width Inches Length Inches 2 8' 3' 1 180 1200 17Vl* 2*2*'// 1500 1b. 1650 tb. 96 22 2-A 8* 3' 1 260 1500 17'// 1900 lb. 2100 lb. 99 31 42V5 y m3 8' 3-A 8' 3' 1 260 2000 20W 2x2x'/,,'* 20001b. 2300 lb. 2 360 2400 2'/v2W/.' 28001b. 3100 lb. 114 31 4VA 114 43 4 12' 4' 2 520 3500 27>/2' IVvl'faU* 3600 lb. 39001b. 132 43 61 4-A 12' 4' 4 880 5000 27>/," 5800 lb. 6100 lb. 132 54 85 All Frames made from Steel Angles with Gussett Plates Hot Riveted--coils made of % in. std Steel Pipe--Both Headers are 3 in. std Steel Pipe with outside male thread. UNITHEATER--B.t.u. Constantsfor Various Steam Pressures and Temperatures of Entering Air Steam Pros. Lbs. --10" 0" Temperature of Air Entering Heater 10" 20 30 40" 45" 50" 55 60" 65" 70" 75" .975 -793 .89- .84 .80 .76 .73 .71 .69 .67 .64 .62 .60 1.01 .96 :92 .87 .83 .79 .76 .74 .72 .70 .68 .65 .63 1.04 1.00 .96 ,.91 .87 .82 .80 .78 .76 .74 .71 .69 .67 1.06 1.05 1.01 .97' .92 .88 .85 .83 .81 .79 .76 .74 .72 1.15 1.10 1.05 1.01 .97 .92 .90 .88 .86 .83 .61 .79 .76 1.18 1.14 1.09 1.05 1.00 .96 .94 .92 .89 .87 .85 .83 .81 1.25 1.21 1.16 1.12 1.08 1.03 1.01 .98 .96 .94 .92 .90 .88 1.30 1.26 1.22 1.17 1.12 1.06 1.06 1.04 1.02 1.00 .97 .95 .93 50 1.35 1.31 1.27 1.22 1.18 1.13 1.11 1.09 1.07 1.04 1.02 1.00 .98 1.39 1.35 1.31 1.26 1.22 1.18 1.16 1.13 1.11 1.09 1.07 1.05 1.03 fO 1 .'49 1.43 1.38 1.34 1.29 1.25 1.23 1.20 1.18 1.16 1.14 1.12 1.10 1.53 1.49 1.44 1.40 1.35 1.31 1.29 1.26 1.24 1.22 1.20 1.18 1.16 125 1.59 f .56 1.51 1.46 1.42 1.37 1.36 1.33 1.31 1.29 1.27 1.24 1.22 135 1.61 1.57 1.53 1.48 1.44 1.39 1.37 1.35 1.33 1.30 1.28 1.26 1.24 140 1.62 1.58 1.54, 1.49 1.45 1.41 1.38 1.36 1.34 1.32 1.29 1.27 1.25 150 1.64 1.60 1.55 1.51 1.46 1.42 1.40 1.38 1.35 1.33 1.31 1.28 1.26 .'Note--To get B.t.u.'s at any steam pressure and entering temperature, multiply constant from table given above, by rated B.t.u.'s at 0 entering and 5 lb. pressure. Catalogs on any products, sent on request. 339