EC-S SERIES COOLING TOWER SINGLE-CELL UP TO 1HRT COOLING CAPACITY High Performance Counterflow Type ENERGY CONSERVATION SPACE SAVING DESIGN FLEXIBILITY MEMBER CERTIFICATE NUMBER: 12-41-01
EC-S Series is an induced draft counter-flow, film filled, FRP multi-cell square cooling tower designed for the equipment cooling, and industrial process cooling and air conditioning applications. The EC-S Series Cooling Tower is designed to meet maximum performance and reliability, and minimum maintenance. The thermal performance of EC-S Series has been certified by CTI in accordance with CTI Standard STD-201. ITE, Singapore EC-S Series Cooling Towers are designed and provided with high quality v-belt & pulley drive system or right-angle gear reducer drive system for trouble free operation. Hyatt Hotel, Taiwan Advantages Efficient Drift Eliminator up to 0.001% drift loss, solves water carry over problems Reduced Pump Head spray nozzle pressure less than 1m Pertamina Plaju, Indonesia High Performance Fill reduces energy consumption. Simplified Piping layout streamlined layout and lower piping cost. Reliable Mechanical Driver System trouble free operation. Safety Maintenance Platform meets OSHA requirements. 1 Plexus Penang, Malaysia
Features UKM Bangi, Malaysia No Tang Plaza, Singapore Setiawalk Puchong, Malaysia Description Material / Specification 1 Fan Assembly Aluminium Alloy 2 V-Belt and Pulley System FRP Pulley Cover 3 Motor Weather Proof TEFC type 4 Fan Stack FRP 5 Main Frame Structure HDG Steel 6 Casing FRP 7 Ladder HDG Steel 8 Cold Water Basin Floor FRP 9 Cold Water Basin Frame HDG Steel 10 Cold Water Basin Sump FRP 11 Louver FRP 12 High Performance Film Fill Pack PVC 13 Non-Clog Spray Nozzle Polypropylene 14 Water Distribution System PVC 15 Drift Eliminator PVC 16 Safety Maintenance Platform HDG Steel 17 Safety Handrail HDG Steel 18 Gear Box System Optional Definition Example EC S 1111 B 4-1 B M I = Inlet at bottom A= Additional Items M = Modification/ Non-CTI listed EC-S Series Structure Material Osram Penang, Malaysia B = Belt & Pulley Drive G = Gear Reducer Drive S = HDG Steel F = FRP Pultruded T = Timber X = Stainless Steel Nominal Cell Size No. of Cell(s) No of air intake / cell e.g. 4 = Four side air intake / cell Motor Size 2
OUTLINE AND FOUNDATION DRAWINGS (SINGLE CELL) W L D C1 C C1 1111B4-1313C4-400 1111C4-1313D4-450 1111D4-350 1313E4-500 1111E4-400 1212C4-350 1212D4-400 1212E4-450 1212F4-500 G PLAN VIEW Ø B FAN 400 RC FOUNDATION DETAIL TOP BOTTOM 210 180 320 MAKE-UP AUTO MAKE-UP MANUAL AIR DISCHARGE TOWER BASE C1/2 320 210 425 600 WATER OUTLET H A WATER F 210 40 610 DRAIN BALANCING PIPE CONNECTION (OPTIONAL) K FRONT VIEW SIDE VIEW NOTE : ALL DIMENSION IN MM. Tower Motor kw Rated Current (at 415 V/50Hz) 1111B4-5.5 11.0 1111C4-7.5 13.6 1111D4-350 11.0 20.1 1111E4-400 15.0 26.7 1212C4-350 7.5 13.6 1212D4-400 11.0 20.1 1212E4-450 15.0 26.7 1212F4-500 18.5 33.2 1313C4-400 7.5 13.6 1313D4-450 11.0 20.1 1313E4-500 15.0 26.7 1313F4-550 18.5 33.2 1414B4-400 5.5 11.0 1414C4-450 7.5 13.6 1414D4-500 11.0 20.1 1414E4-550 15.0 26.7 1414F4-600 18.5 33.2 1515D4-550 11.0 20.1 1515E4-600 15.0 26.7 1515F4-650 18.5 33.2 1515G4-700 22.0 39.3 EC-S SERIES RANGE Overall Dimension Axial Flow Fan Anchor Bolts Data L W H A K B Fan Speed RPM C D 3410 3410 4200 900 2440 3360 3420 3720 4020 4330 4630 3720 4020 4330 4630 4200 4500 4500 4800 900 900 900 1200 2745 2745 3050 3355 368 368 368 368 368 330 330 330 330 3670 3970 4280 4580 3730 4030 4340 4640 3
OUTLINE AND FOUNDATION DRAWINGS (SINGLE CELL) L C1 C C1 1313F4-550 1414B4-400 1414C4-450 1414D4-500 1414E4-550 1414F4-600 W DETAIL 3 MAKE-UP AUTO MAKE-UP MANUAL TOP BOTTOM 305 305 G PLAN VIEW Ø B FAN TOWER BASE C1/2 425 600 WATER OUTLET A 40 535 DRAIN BALANCING PIPE CONNECTION (OPTIONAL) C1/2 C1/2 H F D RC FOUNDATION DETAIL 400 AIR DISCHARGE WATER 685 K FRONT VIEW SIDE VIEW DETAIL 3 NOTE : ALL DIMENSION IN MM. Tower 1111B4-1111C4-1111D4-350 1111E4-400 1212C4-350 1212D4-400 1212E4-450 1212F4-500 1313C4-400 1313D4-450 1313E4-500 1313F4-550 1414B4-400 1414C4-450 1414D4-500 1414E4-550 1414F4-600 1515D4-550 1515E4-600 1515F4-650 1515G4-700 EC-S SERIES RANGE Anchor Bolts Data Piping Data Piping Size Weight (kg) Water Water Overflow Drain Make up Auto Dry Operating C1 F G Inlet Outlet & Manual Weight Weight 1680 1710 3 880 1835 1865 3 957 1985 2015 3600 1033 2140 2170 3600 1110 2290 2320 3900 1185 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 1,875 4,455 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,040 4,800 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,205 5,145 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,370 5,490 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,320 5,590 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,670 6,195 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,700 6, x 1 x 1 100 x 1 80 x 1 50 x 1 2,800 6,350 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2, 6,600 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 2,850 6,770 x 1 x 1 100 x 1 80 x 1 50 x 1 3,220 7,130 x 1 x 1 100 x 1 80 x 1 50 x 1 3,310 7,230 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 3,520 8,070 200 x 1 200 x 1 80 x 1 50 x 1 50 x 1 3,620 8,170 x 1 x 1 100 x 1 80 x 1 50 x 1 3,720 8,270 x 1 x 1 100 x 1 80 x 1 50 x 1 3,820 8,370 x 1 x 1 100 x 1 80 x 1 50 x 1 4,070 8,620 x 1 x 1 100 x 1 80 x 1 50 x 1 4,360 9,630 x 1 x 1 100 x 1 80 x 1 50 x 1 4,460 9,730 x 1 x 1 100 x 1 80 x 1 50 x 1 4,560 9,830 x 1 x 1 100 x 1 80 x 1 50 x 1 4,910 10,590 4
OUTLINE AND FOUNDATION DRAWINGS (SINGLE CELL) L C1 C C1 1515D4-550 1515E4-600 1515F4-650 1515G4-700 W G PLAN VIEW AIR DISCHARGE WATER F K D DETAIL 3 TOP BOTTOM MAKE-UP AUTO 305 305 MAKE-UP MANUAL Ø B FAN RC FOUNDATION DETAIL 600 TOWER BASE C1/2 425 600 WATER OUTLET 40 535 DRAIN BALANCING PIPE CONNECTION (OPTIONAL) H A 685 C1/2 C1/2 DETAIL 3 FRONT VIEW SIDE VIEW NOTE : ALL DIMENSION IN MM. Tower Motor kw Rated Current (at 415 V/50Hz) 1616D4-600 11.0 20.1 1616E4-700 15.0 26.7 1616G4-22.0 39.3 1616H4-800 30.0 51.9 1717E4-15.0 26.7 1717F4-800 18.5 33.2 1717G4-850 22.0 39.3 1717H4-900 30.0 51.9 1717I4-950 37.0 66.0 1818E4-800 15.0 26.7 1818F4-850 18.5 33.2 1818G4-900 22.0 39.3 1818H4-950 30.0 51.9 1818I4-1000 37.0 66.0 2020F4-950 18.5 33.2 2020G4-1000 22.0 39.3 2020H4-1100 30.0 51.9 2020I4-1 37.0 66.0 2020J4-1 45.0 78.7 EC-S SERIES RANGE Overall Dimension Axial Flow Fan Anchor Bolts Data L W H A K B Fan Speed RPM C D 4940 4940 4800 1200 3660 4890 4950 5240 5550 6160 5240 5550 6160 4800 5 5 1200 1200 1200 3660 3660 3660 310 310 310 310 5190 5500 6110 5 5560 6170 5
F OUTLINE AND FOUNDATION DRAWINGS (SINGLE CELL) W L D D2 C C1 C1 C1 DETAIL 3 1616D4-600 1616E4-700 1616G4-1616H4-800 1717E4-1717F4-800 1717G4-850 1717H4-900 1717I4-950 1818E4-800 1818F4-850 1818G4-900 1818H4-950 1818I4-1000 2020F4-950 2020G4-1000 2020H4-1100 2020I4-1 2020J4-1 MAKE-UP AUTO MAKE-UP MANUAL G PLAN VIEW Ø B FAN RC FOUNDATION DETAIL 600 TOP BOTTOM TOWER BASE 305 305 425 600 AIR DISCHARGE C1/2 WATER OUTLET H A WATER 40 535 DRAIN C1/2 C1/2 BALANCING PIPE CONNECTION (OPTIONAL) 685 K FRONT VIEW SIDE VIEW NOTE : ALL DIMENSION IN MM. DETAIL 3 Tower 1616D4-600 1616E4-700 1616G4-1616H4-800 1717E4-1717F4-800 1717G4-850 1717H4-900 1717I4-950 1818E4-800 1818F4-850 1818G4-900 1818H4-950 1818I4-1000 2020F4-950 2020G4-1000 2020H4-1100 2020I4-1 2020J4-1 EC-S SERIES RANGE Anchor Bolts Data Piping Data Piping Size Weight (kg) Water Water Make up Auto Dry Operating C1 D2 F G Inlet Outlet Overflow Drain & Manual Weight Weight 1630 1678 1594 3900 2470 1730 1778 1694 3900 2620 1833 1882 1796 3900 2775 2037 2085 2000 3900 3080 x 1 x 1 100 x 1 80 x 1 50 x 1 5,380 11,840 x 1 x 1 100 x 1 80 x 1 50 x 1 5,480 11,940 x 1 x 1 100 x 1 80 x 1 50 x 1 5,580 12,040 x 1 x 1 100 x 1 80 x 1 50 x 1 5,680 12,140 x 1 x 1 100 x 1 80 x 1 50 x 1 6,020 13,180 x 1 x 1 100 x 1 80 x 1 50 x 1 6,270 13,530 x 1 x 1 100 x 1 80 x 1 50 x 1 6,520 13,880 x 1 x 1 100 x 1 80 x 1 50 x 1 6,610 13,970 x 1 x 1 100 x 1 80 x 1 50 x 1 6,710 14,070 x 1 x 1 100 x 1 80 x 1 50 x 1 7,100 15,360 x 1 x 1 100 x 1 80 x 1 50 x 1 7,200 15,460 x 1 x 1 100 x 1 80 x 1 50 x 1 7, 15,560 x 1 x 1 100 x 1 80 x 1 50 x 1 7,400 15,660 x 1 x 1 100 x 1 80 x 1 50 x 1 7,500 15,760 x 1 x 1 100 x 1 80 x 1 50 x 1 8,870 19,050 x 1 x 1 100 x 1 80 x 1 50 x 1 10,030 21,660 x 1 x 1 100 x 1 80 x 1 50 x 1 10,120 21, x 1 x 1 100 x 1 80 x 1 50 x 1 10,200 21,830 x 1 x 1 100 x 1 80 x 1 50 x 1 10,280 21,910 6
EC-S SERIES QUICK SELECTION TABLE Deg F Deg C HWT CWT WBT HWT CWT WBT 95.0 98.6 95.0 97.0 98.0 98.6 97.0 100.0 98.6 100.0 100.0 98.6 85.1 89.6 86.0 87.0 88.0 89.6 87.0 90.0 89.6 90.0 90.0 89.6 80.6 80.6 81.0 81.0 82.0 81.5 82.0 82.0 82.4 83.0 84.0 84.2 35.0 37.0 35.0 36.1 36.7 37.0 36.1 37.8 37.0 37.8 37.8 37.0 29.5 32.0 30.0 30.6 31.1 32.0 30.6 32.2 32.0 32.2 32.2 32.0 27.0 27.0 27.2 27.2 27.8 27.5 27.8 27.8 28.0 28.3 28.9 29.0 Motor kw m3/hr 1111B4-5.5 116.50 212.00 133.70 144.00 147.70 198.00 129.50 185.50 184.00 171.25 156.20 154.60 1111C4-7.5 129.64 235.91 148.78 160.24 164.36 220.33 144.11 206.42 204.75 190.56 173.82 172.04 1111D4-350 11.0 148.03 269.38 169.89 182.98 187.68 251.59 164.55 235.71 233.80 217.60 198.48 196.45 1111E4-400 15.0 164.24 298.87 188.49 203.01 208.22 279.14 182.57 261.51 259.40 241.42 220.21 217.95 1212C4-350 7.5 145.41 264.60 166.87 179.73 184.35 247.13 161.63 231.53 229.65 213.74 194.96 192.96 1212D4-400 11.0 169.06 307.64 194.02 208.96 214.33 287.32 187.92 269.18 267.01 248.51 226.67 224.34 1212E4-450 15.0 185.70 337.92 213.12 229.53 235.43 315.61 206.42 295.68 293.29 272.97 248.98 246.43 1212F4-500 18.5 198.84 361.83 228.19 245.77 252.09 337.94 221.03 316.61 314.05 292.28 266.60 263.87 1313C4-400 7.5 164.24 298.87 188.49 203.01 208.22 279.14 182.57 261.51 259.40 241.42 220.21 217.95 1313D4-450 11.0 186.14 338.72 213.62 230.08 235.99 316.35 206.91 296.38 293.98 273.61 249.57 247.01 1313E4-500 15.0 206.72 376.18 237.24 255.52 262.08 351.34 229.79 329.16 326.50 303.87 277.17 274.33 1313F4-550 18.5 222.05 404.08 254.83 274.47 281.52 377.39 246.83 353.57 350.71 326.41 297.72 294.67 1414B4-400 5.5 164.24 298.87 188.49 203.01 208.22 279.14 182.57 261.51 259.40 241.42 220.21 217.95 1414C4-450 7.5 182.20 331.55 209.09 225.20 230.99 309.65 202.53 290.11 287.76 267.82 244.28 241.78 1414D4-500 11.0 207.60 377.77 238.25 256.60 263.19 352.83 230.76 330.55 327.88 305.16 278.34 275.49 1414E4-550 15.0 229.93 418.42 263.88 284.21 291.51 390.79 255.59 366.12 363.16 337.99 308.29 305.13 1414F4-600 18.5 246.58 448.71 282.98 304.78 312.61 419.08 274.09 392.62 389.44 362.46 330.60 327.22 1515D4-550 11.0 233.00 424.00 267.40 288.00 295.40 396.00 259.00 371.00 368.00 342.50 312.40 309.20 1515E4-600 15.0 257.96 469.43 296.05 318.86 327.05 438.43 286.75 410.75 407.43 379.20 345.87 342.33 1515F4-650 18.5 276.80 503.70 317.66 342.14 350.93 470.44 307.68 440.74 437.17.88 371.12 367.32 1515G4-700 22.0 293.00 533.19 336.26 362.17 371.47 497.98 325.70 466.54 462.77 430.70 392.85 388.82 1616D4-600 11.0 259.72 472.62 298.06 321.02 329.27 441.41 288.70 413.54 410.20 381.77 348.22 344.65 1616E4-700 15.0 288.18 524.42 330.73 356.21 365.36 489.79 320.34 458.87 455.16 423.62 386.39 382.43 1616G4-22.0 326.73 594.56 374.96 403.85 414.23 555.29 363.18 520.24 516.03 480.27 438.06 433.58 1616H4-800 30.0 362.20 659.11 415.68 447.70 459.20 615.59 402.62 576.72 572.06 532.42 485.63 480.65 1717E4-15.0.01 545.94 344.30 370.83 380.36 509.89 333.49 477.70 473.83 441.00 402.24 398.12 1717F4-800 18.5 321.03 584.20 368.43 396.81 407.01 545.62 356.86 511.17 507.04 471.90 430.43 426.02 1717G4-850 22.0 340.30 619.26 390.54 420.63 431.44 578.37 378.28 541.86 537.47 500.23 456.27 451.59 1717H4-900 30.0 377.09 686.21 432.77 466.11 478.08 640.89 419.17 600.43 595.58 554.31 505.59 500.42 1717I4-950 37.0 404.68 736.42 464.43 500.21 513.06 687.79 449.84 644.37 639.16 594.87 542.59 537.03 1818E4-800 15.0 315.78 574.63 362.40 390.32 400.34 536.68 351.01 502.80 498.74 464.18 423.38 419.05 1818F4-850 18.5 338.55 616.08 388.53 418.47 429.22 575.39 376.33 539.07 534.71 497.66 453.92 449.27 1818G4-900 22.0 358.70 652.74 411.66 443.37 454.76 609.63 398.72 571.14 566.53 527.27 480.93 476.01 1818H4-950 30.0 397.24 722.87 455.89 491.01 503.62 675.14 441.57 632.51 627.40 583.92 532.61 527.15 1818I4-1000 37.0 427.46 777.86 490.57 528.36 541.94 726.50 475.16 680.63 675.13 628.35 573.12 567.25 2020F4-950 18.5 370.96 675.05 425.73 458.53 470.31 630.47 412.36 590.67 585.89 545.30 497.37 492.28 2020G4-1000 22.0 392.86 714.90 450.86 485.59 498.07 667.69 436.70 625.54 620.48 577.49 526.73 521.34 2020H4-1100 30.0 436.66 794.60 501.12 539.73 553.60 742.13 485.38 695.28 689.65 641.87 585.46 579.46 2020I4-1 37.0 468.19 851.98 537.31 578.71 593.58 795.72 520.43 745.49 739.46 688.22 627.74 621.31 2020J4-1 45.0 499.72 909.37 573.50 617.68 633.56 849.32 555.49 795.70 789.26 734.57 670.02 663.15 7
SOUND LEVEL CHART (SINGLE CELL) Fan Side Louver Side Louver Side Tower Louver SOUND LEVEL db(a) - SINGLE CELL Louver Fan 2m 10m 2m 10m 45 deg @1.5M Point 1 2 3 4 5 1111B4-73.0 64.0 73.0 64.0 74.0 1111C4-74.0 65.0 74.0 65.0 75.0 1111D4-350 75.5 66.5 75.5 66.5 76.5 1111E4-400 76.5 67.5 76.5 67.5 78.0 1212C4-350 74.0 65.0 74.0 65.0 75.0 1212D4-400 75.5 66.5 75.5 66.5 76.5 1212E4-450 76.5 67.5 76.5 67.5 78.0 1212F4-500 79.0 69.5 79.0 69.5 80.5 1313C4-400 74.0 65.0 74.0 65.0 75.0 1313D4-450 75.5 66.5 75.5 66.5 76.5 1313E4-500 76.5 67.5 76.5 67.5 78.0 1313F4-550 79.0 69.5 79.0 69.5 80.5 1414B4-400 73.0 64.0 73.0 64.0 74.0 1414C4-450 74.0 65.0 74.0 65.0 75.0 1414D4-500 75.5 66.5 75.5 66.5 76.5 1414E4-550 78.5 69.5 78.5 69.5 79.0 1414F4-600 79.0 69.5 79.0 69.5 80.5 1515D4-550 78.5 69.5 78.5 69.5 78.5 1515E4-600 78.5 69.5 78.5 69.5 79.0 1515F4-650 80.0 71.0 80.0 71.0 81.0 Tower Louver SOUND LEVEL db(a) - SINGLE CELL Louver Fan 2m 10m 2m 10m 45 deg @1.5M Point 1 2 3 4 5 1515G4-700 81.0 72.0 81.0 72.0 82.0 1616D4-600 78.0 69.0 78.0 69.0 78.5 1616E4-700 78.5 69.5 78.5 69.5 79.0 1616G4-80.5 71.0 80.5 71.0 81.0 1616H4-800 81.0 72.0 81.0 72.0 81.5 1717E4-78.5 69.5 78.5 69.5 79.0 1717F4-800 80.0 71.0 80.0 71.0 80.5 1717G4-850 81.0 72.0 81.0 72.0 81.0 1717H4-900 81.5 72.5 81.5 72.5 82.0 1717I4-950 82.0 73.0 82.0 73.0 82.5 1818E4-800 78.5 69.5 78.5 69.5 79.0 1818F4-850 80.0 71.0 80.0 71.0 80.5 1818G4-900 81.0 72.0 81.0 72.0 81.0 1818H4-950 81.5 72.5 81.5 72.5 82.0 1818I4-1000 82.5 73.5 82.5 73.5 82.5 2020F4-950 80.0 71.0 80.0 71.0 80.5 2020G4-1000 81.0 72.0 81.0 72.0 81.0 2020H4-1100 82.0 73.0 82.0 73.0 82.5 2020I4-1 83.0 74.0 83.0 74.0 83.0 2020J4-1 83.5 74.5 83.5 74.0 84.0 8
RECOMMENDED UNIT LAYOUT It is advisable to select and design the best layout or location to avoid air recirculation. Recirculation occurs when some of the hot moist discharge air leaving the cooling tower flows back into the fresh air inlet. The following guidelines will provide the best location or layout which will minimize recirculation, maximize fresh air flow and allow adequate maintenance accessibility. A. SINGLE UNIT INSTALLATIONS The best place for EC-S Series Cooling Tower is in an open space. However, when this is not possible, correct layout guidelines must be followed to provide satisfactory installation. Ensure that the top of the cooling tower is higher than any adjacent walls, buildings or other structures. Figure 1(a) and 1(b) are examples of incorrect installation. These conditions can be corrected by elevating the unit on structural steel/concrete plinths so that the top is higher that the wall as shown in Figure 1(c). INCORRECT : Wind effect with top of unit lower than top of wall CORRECT Installation elevated so that top of unit is higher than top of wall AIR AIR AIR AIR AIR AIR FIGURE: 1(a) FIGURE: 1(b) FIGURE: 1(c) When a cooling tower is located near a wall, consideration must be given to the clearance distance between the air inlets of the tower and the wall structure(s). See Figure 2, Recommended Dimensions and D2. Tower TABLE 1 SINGLE UNIT INSTALLATION Minimum Dimension (mm) (At Width Side) D2 (At Length Side) The minimum dimensions, and D2, as shown in Table 1 must be maintained to ensure that the unit is provided adequate air flow. In some installation, consideration must also be given to access to the unit for maintenance. Room must be provided for piping, removals of access panels, etc. Sometimes other pieces of equipment such as pumps, filters, piping etc are placed in front of the air inlets. These obstructions should not be located any closer than the minimum dimensions in Table 1. 1111 1212 1313 1414 1515 1616 1717 1818 2020 1800 1800 2200 2200 2 2 TABLE 2 MULTIPLE UNIT INSTALLATION Tower Tower Width, W mm Minimum Dimension, mm D3 (End-to-End) D2 All models All sizes 1000 Tower Tower Minimum Length, L mm Dimension, mm D4 (Side-by-Side) FIGURE 2: INSTALLATION NEXT TO A WALL 1111 1212 Below 8000 0 1313 9 1414 to 2020 Below 12000 4000 The minimum dimensions are as listed in Table 2
B. MULTIPLE UNIT INSTALLATION TABLE 3 When more than one cooling tower is installed at the same location, recirculation becomes a bigger problem. Tower Minimum Dimension, mm D5 (At Width Side) With the installations of two cooling towers, they should be placed end to end with the narrows ends adjacent as shown in Figure 3. Another method is to locate the units side-by-side with the longer sides parallel to each other as shown in Figure 4. In either configuration, the distance between the units must provide adequate airflow as well as room for piping to the unit and access for maintenance. W FIGURE 3: MULTIPLE UNITS PLACED END TO END D3 Tower Consult Truwater s Design Engineer Minimum Dimension, mm D6 (At Length Side) Consult Truwater s Design Engineer 2) Louvered Wall Enclosures EC-S Series Cooling Tower can also be installed in enclosures with louvered or slotted walls and an open top (Figure 6) with this type of enclosure, the air flow patterns will be a mixture of the open type and well installation. The inlet air will be drawn from the top as well as through the louvers or slots. When considering a multiple-cell unit located in a louvered wall enclosure, the D7 and D8 dimensions, found in Table 4, must be used as absolute minimums. D8 LOUVERED WALL L D7 D4 FIGURE 4: MULTIPLE UNITS PLACED SIDE-BY-SIDE FIGURE 6: LOUVERED WALL ENCLOSURE C. SPECIAL ENCLOSURE INSTALLATION 1) Solid Wall Enclosures or Wells Figure 5 shown a cooling tower is installed in a well. When considering a multiple-cell unit located in a well, the D5 and D6 dimensions, found in Table 3, must be used as absolute minimums. TABLE 4 Tower End Wall Minimum Length, L mm Dimension, mm D7 (At Width Side) Consult Truwater s Design Engineer D6 Tower Louver Width, Minimum W mm Dimension, mm D8 (At Length Side) Consult Truwater s Design Engineer D5 FIGURE 5: SOLID WALL ENCLOSURE The unit should be oriented so that the air flows uniformly to the air inlets on all louver sides of the unit. The air discharge of the unit must be level with or higher than surrounding walls. 10