SPX Cooling Technologies Recold JW Series User's Manual
Contents
1. 9 TABLE NO 2 72 WET BULB 74 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 7 4 1 47 51155 5961 6466 6870 71 73 74 76 77 78 79 7 4 0 4 5 5 0 5 4 5 7 6 0 6 3 6 4 6 7 6 8 70 72 73 74 75 77 78 8 3 1 3 8 4 3 4 8 5 1 5 7 6 0 6 2 6 4 6 6 6 7 6 9 70 71 73 74 75 8 30 37 4 2 4 7 5 0 5 3 5 6 5 8 6 0 6 2 6 4 6 6 6 7 6 8 6 9 71 73 74 9 2 9 3 5 4 1 4 4 4 8 5 1 5 4 5 6 5 8 6 0 6 1 6 4 6 5 6 6 6 7 6 9 70 71 9 28 34 3 9 4 3 47 4 9 5 2 5 4 5 6 5 9 6 0 6 2 6 4 6 5 6 6 6 8 6 9 70 10 2 7 3 3 3 8 4 2 4 5 4 8 5 1 5 3 5 5 5 7 5 9 6 0 6 2 6 3 6 5 66 6 7 6 9 10 2 6 3 1 3 7 4 1 4 4 4 7 4 9 5 1 5 4 5 6 5 9 6 0 6 2 6 3 6 4 6 6 6 8 11 2 5 3 1 3 6 4 0 4 3 4 6 4 9 5 1 5 5 5 7 5 8 6 0 6 1 6 3 6 4 6 5 6 7 11 2 5 3 0 3 5 3 9 4 2 45 47 4 9 52 4 57 8 6 0 6 1 6 2 6 4 6 6 12 2 4 2 9 34 3 82. Morus GPM Unit Load Factors ode 0 10 1 5 2 0 2 5 3 0 3 5 4 0 42 45 50 55 6 0 6 5 10 15 8 0 JWL 10 35 0A at 140 96 70 53 41 34 32 28 24 21 18 16 15 14 13 08 JWL 21 62 W Boo 241 174 15 83 63 49 39 36 32 27 23 21 10C JWL 21 62 W agen 260 181 127 93 69 54 43 40 35 29 25 22 20 5B JWL 26 77 p Vi 325 20 145 105 78 60 48 44 39 32 28 24 C JWL 26 77 5 du 355 245 175 126 94 73 57 53 46 37 31 27 23 25A JWL 33 94 5 3 5 396 382 274 200 149 13 87 68 63 55 45 37 31 25B JWL 33 94 p 4 40 305 22 169 131 102 82 76 66 54 44 37 31 25C JWL 33 94 W 54 42 355 25 200 158 123 90 79 65 54 45 38 33 35A JWL 41 119 5 pn 120392 610 452 30 29 17 155 12 12 98 79 65 54 45 39 JWL 41 119 35B JW 120 425 535 40 315 245 10 150 138 20 9 79 65 55 47 41 JWH 426 550 JWL 41 119 35C Jw 120 425 610 470 35 2271 174 161 40 113 92 76 64 55 48 42 JWH 426 550 50A JWL 50 149 e etie 685 515 390 300 235 185 170 4 18 97 80 68 58 51 45 JWL 50 149 50B JW 150 425 720 50 425 330 20 20 12 67 135 10 92 7 66 57 50 JWH 426 650 JWL 50 149 50C JW 150 425 760 558 465 355 281 25 20 81 47 121 01 85 72 63 55 JWH 426 650 JWL 70 209 70B JW 210 690 880 75 50 49 340 270 28 25 15 148 118 00 85 74 65 JWH 691 850 JWL 70 209 70C Jw 210 575 1005 85 645 505 40 318 29 256 208 170 40 18 10 88 78 JWH 576 850 JWL 100 209 858 Jw 210 590 1090 900 740 55 5 360 332 290 240 200 165 40 9 05 9
3. 76 9 8 86 10 7 53 73 65 78 103 200 SIQI ES ego W IS JES SR Olle NNS om 8 2 10 5 9 4 117 57 79 7 0 1 7 14 18 225 TOO 78 238 4871758 19 2 LONEN SON SO IES 7207 71 don esee EDES 250 12 49 15999 SND ESS BA GSA SIEA BABBAS DA ENE ZS NESS NE LEN ES 2 212 52 8 NER NDE 275 54 Ax Se ISBN ADE 1 BZS SAN ZA 80 122 27 12511827 27 34 300 11 5 150 64 78 985 54 67 78 49 61 72 285 38121 3612 32 OSSA 328 32 AN 350 15 53 177 BA 1704 12571 ZEISS PIO AN 7971 85 38 6 AO PAT SB 42 139 491 42 52 400 IO SNN SONS GES SAN 28 eE l IIG Su LS SSU BAE SI AANB AB ISA sb 46 450 23 3 3 RSS 20 3 1 533 1568 178 15 66 81 500 27 40 ESOS 23 3 7 62007 JA 65 64 841 NS ES 88 550 31 46 27 43 12 MM 14 600 3 1 5 0 25 17 29 12 14 19 1 7 650 36 57 WSM 28 20 33 14 19 16 12 19 700 19 32 22 37 20 16 22 18 25 21 750 21 36 25 2 23 18 25 20 28 24 800 24 40 28 47 25 20 27 23 331 27 850 27 44 31 52 27 23 31 26 35 30 900 34 60 31 25 135 28 39 33 950 38 64 34 28 37 1 43 36 1000 4 1 70 37 130 42 34 47 40 1100 45 36 5 1 41 5 5 46 1200 5 2 4 3 5 8 48 66 54 1300 6 1 50 67 55 74 60 1400 69 77 64 85 70 1500 79 64 66 72 98 80 1600 88 70 95 80 111 90 1700
4. 3 6 3 8 4 0 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 3 5 5 Ex 19 1 8 2 2 2 6 2 9 3 3 35 3 7 3 9 4 1 43 44 4 6 47 4 9 5 0 5 1 5 3 5 4 19 1 7 2 2 2 6 2 9 3 2 34 3 7 3 8 4 0 4 2 43 4 5 4 6 4 8 4 9 5 0 5 2 5 3 amp 20 1 7 2 1 2 5 2 8 3 1 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 1 5 3 20 1 7 2 1 2 5 2 8 3 1 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 8 4 9 5 0 5 2 21 1 7 2 1 2 4 2 7 3 0 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 8 4 9 5 0 5 1 21 1 6 2 0 2 1 2 7 3 0 3 2 3 4 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 8 4 9 5 0 22 1 6 2 0 2 4 2 7 2 9 3 2 3 4 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 7 4 9 5 0 22 1 6 2 0 2 3 2 6 2 9 3 1 3 3 3 5 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 6 4 8 4 9 23 1 6 1 9 2 3 2 6 2 9 3 1 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 7 4 9 23 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 6 3 7 3 9 4 0 4 1 4 3 4 4 4 5 4 6 4 8 24 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 5 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 6 4 8 24 1 5 1 8 2 2 2 5 2 7 2 9 3 1 3 3 3 5 3 6 3 5 3 9 4 0 4 1 4 3 4 4 4 5 4 6 25 1 5 18 2 1 2 4 2 7 2 9 3 1 3 3 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4
5. 4 1 4 4 4 7 4 9 5 1 5 3 5 6 5 7 5 8 6 0 6 2 6 3 6 5 12 2 3 2 9 3 3 3 7 4 0 4 3 4 5 4 7 4 9 5 1 5 3 5 4 5 6 5 7 5 9 6 0 6 2 64 132328 13 2136 40 42 4547 49 5 1 5 2 5 4 5 5 5 7 58 59 6 1 63 13 2 2 2 7 3 2 13 5 38141 4 3 4 6 47 4 9 5 5 2 4 5 7 5 8 6 0 641 14 2 1 2 6 3 1 3 4 3 8 4 0 4 3 4 5 4 6 4 8 5 0 5 1 5 3 5 4 5 6 5 7 5 9 6 1 14 2 1 2 6 3 0 3 4 3 7 3 9 4 1 4 4 4 5 4 7 4 9 5 0 5 2 5 3 5 5 5 6 5 8 5 9 15 2 0 2 5 2 9 3 2 3 6 3 8 4 1 4 3 4 4 4 6 4 8 4 9 5 1 5 2 5 4 5 7 5 9 15 2 0 2 4 2 8 3 2 3 5 3 7 3 9 4 2 4 3 4 5 4 7 4 8 5 0 5 1 5 4 5 6 5 7 16 1 9 2 4 2 8 3 1 3 5 3 7 3 9 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 4 5 5 5 7 16 1 9 2 3 2 7 3 1 3 4 3 6 3 8 4 0 4 2 4 3 4 5 4 7 4 8 5 0 5 1 5 3 5 4 5 6 c 17 19 2 3 271 3 0 3 3 3 6 38 4 0 4 2 4 3 4 5 4 7 48 49 5 1 5 2 5 4 5 6 5 17 1 8 2 2 2 6 3 0 32 3 5 3 7 3 9 41 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 3 5 4 5 18 18 2 2 2 6 2 9 3 2 3 5 3 7 3 9 4 0 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 2 5 4 5 18 1 7 2 2 2 5 2 8 3 1 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 8 5 0 5 1 5 2 19 17 2 1 2 5 2 8 3 1 3 3 3 6 3 7
6. 2 8 3 0 3 2 3 4 3 5 3 7 3 8 4 0 4 1 4 2 4 3 4 4 4 5 22 1 4 1 7 2 0 2 3 2 5 2 8 3 0 3 1 3 3 3 4 3 6 3 7 3 8 4 0 4 1 4 2 4 3 4 4 23 1 4 1 7 2 0 2 3 2 5 2 8 3 0 3 1 3 3 3 4 3 6 3 7 3 8 4 0 4 1 4 2 4 3 4 4 23 1 3 1 6 2 0 2 2 2 5 2 7 2 9 3 0 3 2 3 4 3 5 3 6 3 7 38 4 0 4 1 4 2 4 3 24 1 3 1 6 1 9 2 2 2 4 2 7 2 9 3 0 3 2 3 3 3 5 3 6 3 7 3 8 4 0 4 1 4 2 4 3 24 1 3 1 6 1 9 2 2 2 4 2 6 2 8 2 9 3 1 3 3 3 4 3 5 3 6 3 7 3 9 4 0 4 1 4 1 25 1 3 1 6 1 9 2 1 2 3 2 6 2 8 2 9 3 1 3 2 3 4 3 5 3 6 3 7 3 8 4 0 4 1 42 25 1 2 1 5 18 2 1 2 3 2 5 2 7 2 8 3 0 3 2 3 3 3 4 3 6 3 8 3 9 4 0 4 0 26 1 2 1 5 1 8 2 1 2 3 2 5 2 7 2 8 3 0 3 1 3 3 3 4 3 5 3 6 3 7 3 9 4 0 4 1 26 1 2 1 5 1 8 2 0 2 2 2 4 2 6 2 8 2 9 3 1 3 2 3 3 3 4 3 5 3 7 3 8 3 9 3 9 27 12 EE 20 22 24 2 6 28 EE EEEE E 34 35 37 3183 9 4 0 27 11 14 17 19 22 2425 27 219 8 0 31 32 33 34 36 37 38 38 28 1 2 1 5 1 7 1 9 2 1 2 3 2 5 2 7 2 8 3 0 3 1 3 2 3 4 3 5 3 6 3 7 3 8 3 9 28 1 1 1 4 1 6 1 9 2 1 2 3 2 5 2 6 2 8 2 9 3 0 3 1 3 3 3 4 3 5 3 6 3 7 3 8 29 11 4 16 182123 21 26 2829 3 0 3 2
7. 2 9 3 3 3 6 3 9 4 1 4 3 4 5 47 4 8 4 9 5 2 54 5 6 5 8 5 9 19 2 0 2 4 2 9 3 2 3 5 3 8 4 0 4 2 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 4 5 6 5 8 amp 20 1 9 2 4 2 8 3 2 3 4 3 7 3 9 4 2 4 3 4 5 4 7 4 8 4 9 5 1 5 3 5 4 5 6 5 7 amp 20 1 9 2 3 2 8 3 1 3 4 3 6 3 9 4 1 4 2 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 5 5 6 21 1 9 2 4 2 7 3 1 3 4 3 6 3 9 4 1 4 2 4 4 4 6 4 7 4 9 5 0 5 3 5 3 5 4 5 6 21 1 8 2 3 2 7 3 0 3 3 3 5 3 8 4 0 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 3 5 5 22 1 8 2 3 2 6 3 0 3 2 3 5 3 7 3 9 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 4 22 1 8 2 2 2 6 2 9 3 2 3 4 3 7 3 9 4 0 4 2 4 4 4 5 4 7 4 8 4 9 5 1 5 2 5 4 23 1 8 2 3 2 6 3 0 3 2 3 5 3 7 3 9 4 1 4 3 4 4 4 6 4 7 4 8 5 0 5 2 5 3 5 4 23 1 7 2 1 2 5 2 8 3 1 3 3 3 5 3 7 3 9 4 1 4 3 4 4 4 5 4 7 4 8 4 9 5 1 5 2 24 1 7 2 1 2 5 2 8 3 1 3 3 3 5 3 7 3 9 4 1 4 3 4 4 4 5 4 6 4 8 4 9 5 1 5 2 24 1 6 2 1 2 5 2 7 3 0 3 2 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 8 5 0 5 1 25 1 6 2 1 2 4 2 7 3 0 3 2 3 4 3 6 3 8 3 9 4 1 4 2 4 4 4 6 4 7 4 8 4 9 5 1 25 16 2 0 2 4 2 6 2 9 3 1 3 3 3 5 3 7 3 9 4
8. 5 0 5 1 5 3 22 1 7 2 1 2 5 2 8 3 0 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 7 4 8 5 0 5 1 23 1 7 2 1 2 4 2 7 3 0 3 3 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 8 5 0 5 1 23 1 6 2 0 2 4 2 7 3 0 3 2 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 7 4 9 5 0 24 1 6 2 0 2 4 2 7 2 9 3 2 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 7 4 9 5 0 24 1 6 1 9 2 3 2 6 2 9 3 1 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 7 4 9 25 1 6 1 9 2 3 2 6 2 8 3 1 3 2 3 4 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 7 49 25 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 5 3 7 3 8 3 9 4 1 43 4 4 4 5 4 6 4 7 26 1 5 1 9 2 2 2 5 2 7 3 0 3 2 3 3 3 5 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 6 4 8 26 1 5 1 8 2 2 2 4 2 7 2 9 3 1 3 2 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 5 4 6 27 15 18 2 1 2 4 2 7 2 9 3 1 3 3 3 5 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 5 4 6 27 1 4 1 8 2 1 2 4 2 6 2 9 3 0 3 2 3 4 3 5 3 6 3 8 3 9 4 0 4 2 4 3 4 4 4 5 28 14 1 8 2 1 2 3 2 6 2 8 3 0 32 3 4 35 36 38 3 9 4 1 4 2 4 3 44 4 5 28 1 4 1 7 2 0 2 3 2 5 2 8 2 9 3 1 3 3 3 4 3 6 3 7 3 8 4 0 4 1 4 2 4 3 4 4 29 1 4 1 7 2 0 2 3 2 5 2 8 2 9 3 1 3 3 3 4 3
9. 5 2 5 3 5 5 5 6 15 1 8 2 3 2 7 3 0 3 3 3 5 3 7 3 9 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 2 5 5 16 1 8 2 2 2 6 3 0 3 3 3 5 3 7 3 9 4 1 4 2 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 4 16 1 7 2 2 2 6 2 9 3 2 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 17 1 7 2 1 2 5 2 9 3 1 34 3 6 3 8 4 0 4 1 4 3 4 4 46 4 7 4 9 5 0 5 2 5 3 5 17 17 2 1 2 5 2 8 3 1 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 4 4 6 4 7 4 9 5 0 5 1 5 18 16 2 1 2 4 2 7 3 0 3 3 3 5 3 7 3 8 4 0 4 2 4 3 4 5 4 6 4 7 4 9 5 0 5 1 5 18 16 2 0 2 4 2 7 2 9 3 2 3 4 3 6 3 7 3 9 4 1 4 2 4 3 4 5 4 6 4 7 4 8 5 0 19 16 2 0 2 3 26 2 9 3 1 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 5 4 6 47 4 8 4 9 19 1 5 19 2 3 2 6 2 8 31 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 3 4 5 4 6 4 7 4 8 20 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 6 4 7 4 8 20 1 5 1 8 2 2 2 5 2 7 3 0 3 2 3 3 3 5 3 6 3 8 3 9 4 0 4 2 4 3 4 4 4 5 4 6 21 1 5 1 8 2 2 2 4 2 7 2 9 3 1 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 3 4 5 4 6 4 7 21 1 4 1 8 2 1 2 4 2 6 2 9 3 1 3 2 3 4 3 5 3 7 3 8 3 9 4 1 4 2 4 3 4 4 4 5 22 1 4 1 8 2 1 2 4 2 6
10. All methods other than those using an adequate antifreeze solution should provide a means of emergency coil draining It is recommended that automatic drain valves and air vents with vacuum breakers be installed on each coil circuit Adequately size drains with heat tracing tape and insulation should be provided for free drainage Should the circulating pump fail or the water temperature leaving the coil drop below 50 F for any reason the coil will automatically drain preventing freeze damage Ethylene Glycol by volume 20 30 40 50 14 3 14 38 Recold JW Series Fluid Cooler Selection Procedure Closed circuit cooler selections can easily be made by using the information on pages 6 through 11 The examples below demonstrate proper procedures for water and ethylene glycol solutions Other fluids can be cooled but since their heat transfer and flow characteristics may vary please contact your local Recold sales representative for assistance WATER SELECTION EXAMPLE Select a unit to cool 225 GPM of water from 102 F to 90 F at 76 F wet bulb temperature Determine Range 102 F 90 F 12 F Range Determine Approach 90 F 76 F 14 F Approach Select Load Factor Enter Unit Load Factor Table 2 for 76 F wet bulb Select load factor based on 12 F range and 14 F approach Load factor in this example equals 3 3 When wet bulb temperature is an odd number interpolate betwee
11. Recold JW Series Fluid Cooler Engineering Data SP COOLING TECHNOLOGIES Recold JW Series Fluid Cooler Contents CONMSTUCTION RN RTT 3 SOMO MAC bates 4 Engineering 9 9 5 Freeze iced s 6 Selection Procedure 7 Load Factors eenen a 8 Ati LEE 10 ciu cable 11 ACESSSONE Sannen cee qaku 12 Nomenclature JW L 50 B Design Series 1 Unit Size Optional GPM Range Approximate Coil Face L Low Flow area in sq ft H High Flow IMPORTANT Since Recold heat exchange coils are copper the coil can be drained without regard to internal corrosion This must be considered with steel tubes that do not have internal protection RECOLD HYDROSPRAY Recold engineering has developed an exclusive water distribution system called hydrospray This unique system provides optimum water coverage of the heat transfer coil for maximum efficiency and virtual elimination of harmful scale problems that result from uneven water distribution This process is accomplished through a limited number of large orifice non clogging diffusers mounted on a heavy duty PVC pipe water header Recold JW Series Fluid Cooler Construction The JW Evaporative Fluid Cooler is a ruggedly built unit constructed to provide
12. 1 2 45 3 0 36 23 28 14 18 2 1 1 0 13 16 09 12 15 50 36 43 2 7 33 16 21 26 12 16 19 11 14 18 55 43 50 32 39 19 25 3 0 15 19 23 13 17 2 1 60 ED 50 59 37 46 22 48 34 17 23 27 15 19 24 65 a 16 em 4 3 5 2 2 6 3 4 41 19 26 3 1 17 22 28 70 4 5 1 2 47 58 29 37 45 22 29 3 5 19 26 31 15 1 8 75 50 1 4 54 65 33 42 52 25 34 40 22 29 35 17 12 1 80 Se 15 RUN 37 48 59 28 47 43 25 32 40 18 23 85 42 54 65 32 42 5 0 28 36 45 20 25 90 5 9 Ie 22 1 fem 45 58 69 35 46 54 30 39 48 22 28 95 Uu 22 2 4 20 8 10 38 50 6 1 33 43 54 24 3 1 100 BSD EIN 42 54 65 36 48 58 26 33 3 0 37 17 24 21 29 26 34 10 ESE 123 fom 48 63 78 43 56 69 31 38 3 5 43 21 28 24 35 3 0 4 1 120 Mom Ae 1 3 EM 50 65 80 35 45 40 50 24 33 27 40 35 47 130 SS SO S NEN 5 6 74 91 42 52 46 57 27 38 30 46 40 5 4 140 ON 65 83 104 46 58 52 64 31 43 37 52 46 6 1 150 51 65 59 72 35 49 44 58 52 69 160 57 73 65 80 40 54 49 65 58 77 170 Gil Ul AES NNS SNN E2 2 IS 6 3 81 71 89 44 60 54 73 65 86 180 ON EN 70 8 9 78 98 49 66 60 80 71 9 4 190 EON one
13. 2 0 2 2 2 4 2 6 2 8 3 0 3 2 3 3 3 5 3 6 3 7 3 8 3 9 4 1 4 2 4 3 26 1 2 1 6 1 9 2 2 2 4 2 6 2 8 2 9 3 1 3 2 3 4 3 5 3 6 3 7 3 8 4 0 4 1 42 27 1 2 1 6 1 9 2 1 2 4 2 6 2 8 2 9 3 1 3 2 3 4 3 5 3 6 3 7 3 9 4 0 4 1 4 2 27 1 2 16 1 8 2 1 2 3 2 5 2 7 2 9 3 0 3 1 3 3 3 4 3 5 3 6 3 8 3 9 4 0 4 1 28 1 2 1 5 1 8 2 1 2 3 2 5 2 7 2 9 3 0 3 2 3 3 3 4 3 6 3 7 3 8 3 9 4 0 4 1 28 1 2 1 5 1 8 2 0 2 2 2 4 2 6 2 8 2 9 3 1 3 2 3 3 3 5 3 6 3 7 3 8 3 9 4 0 29 1 2 1 5 17 20 22 24 2 6 2829341321 32 3563731 39 40 29 11 14 17 19 21 24 251 27 29 3013 33 34 35 36 8 7 8 8 8 9 30 1 1 1 4 1 7 1 9 2 1 2 3 2 5 2 6 2 8 3 0 3 1 3 2 3 4 3 5 3 6 3 7 3 8 3 9 30 1 1 1 4 1 6 1 9 2 1 2 3 2 4 2 6 2 8 2 9 3 0 3 2 3 3 3 4 3 5 3 6 3 7 3 8 76 WET BULB 78 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Ji 3 8 4 3 4 8 2 6 6 1 6 2 6 5 6 6 6 8 70 71 72 73 75 76 7 3 0 3 6 4 2 4 6 0 5 3 5 6 5 9 6 0 6 3 6 4 6 6 6 8 6 9 70 71 73 74 8 29 3 5 4 0 4 5 4 8 5 1 5 4 5 6 5 8 6 0 6 2 6 4 6 5 6 6 6 7 6 9 70 72 8
14. 2 8 0 3 1 32 3 3 3 4 6 89 7 3 8 3 8 26 1 1 14 1 7 19 2 1 2 3 2 5 2 7 2 8 3 0 3 1 3 2 3 3 3 4 3 6 3 7 3 8 3 8 26 1 1 1 4 1 6 1 9 2 1 2 3 2 5 2 6 2 7 2 9 3 0 3 1 3 2 3 3 3 5 3 6 3 7 3 7 27 11 1 4 1619 1211232426128 1293031 323335 3 6 3 7 37 27 10 13 16 18 2022 2425 27 28 29 31 32 33 34 35 3 6 3 6 28 1 1 1 3 1 6 1 8 2 0 2 2 2 4 2 6 2 7 2 8 2 9 3 0 3 2 3 3 3 4 3 5 3 6 3 7 28 1 0 1 3 1 5 1 7 1 9 2 1 2 3 2 5 2 6 2 7 2 8 3 0 3 1 3 2 3 3 3 4 3 5 3 6 29 T3 1 5 17 1921 23 2412628129130 32 3 3 34 315 3 6 297710 EZ TETANY 922 62 743 E2253 62574 E2181 09150118 1 821 8311941 815 30 1 0 12 1 5 1 7 1 9 2 1 2 2 2 4 2 5 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 30 0 9 1 2 1 4 1 6 1 8 2 0 2 2 2 3 2 4 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 Recold JW Series Fluid Cooler Ratings TABLE NO 3 Selection Parameters Do not exceed the minimum and maximum flow rates given for each unit in column 2 Model JWH high flow rate units available only for models shown Extrapolation of flow rating should not exceed the flow range printed for each unit
15. 247 304 803 108 9 JW115C 76 4036 880 52 403 305 380 803 108 9 JW130B 76 4035 1012 52 403 305 304 803 125 2 JW130C 76 4035 1012 52 403 349 380 8234 125 2 Note Inlet and outlet connection sizes shown are standard copper OD and are sized for nominal flow rates Actual sizes should be specified to conform to job requirements special connections are required such as flanges or threaded fittings consult your Recold sales representative Connection quantity is total of in and out connections Recold JW Series Fluid Cooler Freeze Protection For the most part evaporative closed circuit coolers will be installed for operation on a yearround basis Units installed in a cold climate must be provided with adequate freeze protection for both the recirculating water and the heat exchange coil for proper equipment operation and maintenance RECIRCULATING WATER The operation of evaporative cooled equipment under approximately full load conditions will prevent freezing of the recirculated water However during periods of very little or no heat load when fans and pumps are pur S some form of freeze protection must be used A simple form of freeze protection commonly used is a remote sump tank inside a heated building below the evaporative cooled equipment The water circulation pump is located at the remote tank circulating water through the evaporative cooler during load conditions When the unit is shut down the water drains down
16. 4 4 6 4 8 4 9 5 1 5 3 5 4 5 6 5 7 5 9 6 0 12 2 1 2 6 3 0 3 4 3 7 3 9 4 2 4 4 4 6 4 7 4 9 5 1 5 2 5 4 5 5 5 7 5 8 6 0 12 2 0 2 5 2 9 3 3 3 6 3 8 4 1 4 2 4 4 4 6 4 8 4 9 5 1 5 2 5 4 5 5 5 7 5 8 13 2 0 2 4 2 9 3 2 3 5 3 8 4 0 4 2 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 5 5 6 5 8 13 1 9 2428 31 3 4 137 3 92 4 43 4 4 4 6 47 49 5 1 5 2 55156 14 1 9 2 3 2 7 3 1 3 3 3 6 3 8 4 0 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 3 5 4 5 6 14 1 8 2 2 2 7 3 0 3 2 3 5 3 7 3 9 4 1 4 2 4 4 4 5 4 7 4 9 5 0 5 1 5 3 5 4 15 1 8 2 2 2 6 2 9 3 2 3 4 3 6 3 8 4 0 4 2 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 4 15 1 7 2 1 2 5 2 8 3 1 3 3 3 6 3 7 3 9 4 1 4 2 4 4 4 5 4 7 4 8 4 9 5 1 5 2 16 17 2 1 2 5 2 8 3 1 3 3 3 5 3 7 3 9 4 0 4 2 4 3 4 5 4 6 4 8 4 9 5 1 5 2 16 1 7 2 0 2 4 2 7 3 0 3 2 3 5 3 6 3 8 4 0 4 1 4 2 4 4 4 5 4 6 4 8 4 9 5 1 5 17 16 2 0 2 4 2 7 3 0 3 2 3 4 3 6 3 8 3 9 4 1 4 2 4 3 4 5 4 6 4 8 4 9 5 0 5 17 16 2 0 2 3 2 6 2 9 3 1 3 3 3 5 3 7 3 8 4 0 4 1 4 2 4 4 4 5 4 6 4 8 4 9 5 18 16 1 9 2 3 2 6 2 8 3 1 3 3 3 5 3 6 3 8 4 0 4 1 4 2 4 4 4 5 4 6 4 7 4 9 5 18 1 5 1
17. 415 284T amp 250 8 0 7085 10900 JW85B 30 52300 415 286T 3 325 11 0 7725 11900 JW85C 30 50000 430 286T 3 325 11 0 8185 12900 JW100B 30 58300 270 286T 5 375 11 0 9170 16870 JW100C 30 61000 280 286T 5 365 11 0 9675 17175 JW115B 40 66000 280 324T 5 400 14 0 10080 19050 JW115C 40 69000 290 324T 5 400 14 0 10670 20170 JW130B 50 76500 300 326T 5 450 16 0 11025 21425 JW130C 50 80000 305 326T 5 450 16 0 11720 22620 For static pressure from to 1 ESP use next size larger motor Model JWL Sump Capacity JW Coil Volume JWH Coil Face Area Circuits Connection 00 gal Circuits Connection 00 gal Circuits Connection 00 sq ft JW10A 10 2029 43 21 2029 16 97 JW10B 21 202 43 42 202 20 97 JW10C 21 202 43 42 202 24 97 JW15B 26 203 64 52 203 31 14 5 JW15C 26 203 64 52 203 37 14 5 JW25A 33 203 95 66 203 37 21 6 JW25B 33 203 95 66 293 47 21 6 JW25C 33 203 95 66 2036 57 21 6 JW35A 41 203 163 82 203 54 325 JW35B 41 203 163 82 203 70 164 403 32 5 JW35C 41 203 163 82 203 86 205 4034 325 JW50A 50 2036 248 00 2036 82 49 6 JW50B 50 2036 248 00 203 106 200 403 49 6 JW50C 50 2036 248 00 2036 130 250 403 49 6 JW70B 70 4035 374 40 403 146 280 803 70 4 JW70C 70 4035 374 40 4035 182 350 893 704 JW85B 70 403 454 40 403 177 280 8234 85 5 JW85C 70 403 454 40 403 200 350 803 85 5 JW100B 76 748 4036 212 304 803 925 JW100C 76 4035 748 52 493 262 380 803 925 JW115B 76 880 52 403
18. 6 4 6 5 6 7 6 8 12 2 6 3 1 3 6 4 0 4 4 4 7 4 9 5 1 5 3 5 5 5 7 5 8 6 0 6 1 6 3 6 4 6 6 6 7 12 2 5 3 0 3 5 3 9 4 2 4 5 4 8 5 0 5 2 5 4 5 6 5 7 5 9 6 0 6 1 6 3 6 4 6 6 13 2 4 3 0 3 4 3 8 4 2 4 4 4 7 4 9 5 1 5 3 5 4 5 6 5 8 5 9 6 1 6 2 6 4 6 5 13 23 2 9 3 3 3 7 4 1 4 3 4 6 4 8 5 0 5 2 5 5 5 6 5 8 5 9 6 1 6 2 6 4 14 2 2 2 8 3 3 3 6 4 0 4 2 4 5 4 7 4 9 5 1 5 2 5 4 5 6 5 7 5 8 6 0 6 1 6 3 14 2 2 2 7 3 2 3 5 3 9 4 1 4 4 4 6 4 7 4 9 5 2 5 4 5 7 5 8 6 0 6 2 15 2 1 2 6 3 1 3 4 3 8 4 0 4 3 4 5 4 7 4 8 5 0 5 1 5 3 5 5 5 6 5 8 5 9 6 1 15 2 0 2 5 3 0 3 3 3 7 3 9 4 2 4 4 4 5 4 7 4 9 5 0 5 2 5 5 5 6 5 8 6 0 16 2 0 2 5 3 0 3 3 3 6 3 9 4 1 4 3 4 5 4 7 4 8 5 0 5 2 5 5 5 6 5 8 5 9 16 2 0 2 4 2 9 3 2 3 6 3 8 4 0 4 2 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 5 5 6 5 8 5 17 19 2 4 2 9 3 2 3 5 3 8 4 0 4 2 4 4 4 5 4 7 4 8 5 0 5 2 5 5 5 6 5 8 5 17 19 2 3 2 8 3 1 3 4 3 7 3 9 141 4 3 4 4 4 6 4 7 4 9 0 2 5 3 5 5 5 7 5 18 19 2 3 2 7 3 1 3 4 3 6 3 9 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 2 5 3 5 4 5 6 5 18 18 2 3 2 7 3 0 3 3
19. 6 8 7 0 71 73 75 76 77 78 79 8 0 8 4 7 5 1 5 5 5 9 62 64 6 7 6 8 70 71 73 74 75 77 78 79 9 3 9 4 5 4 9 6 6 2 6 4 6 6 6 7 6 9 71 72 73 75 76 77 9 3 8 4 4 4 8 5 2 5 8 6 0 6 3 6 4 6 6 6 8 6 9 70 72 73 74 76 10 3 7 4 3 47 5 0 5 3 5 6 5 9 6 1 6 3 6 5 6 6 6 8 6 9 70 71 73 75 10 3 0 3 6 4 1 4 5 4 9 5 2 5 4 5 7 5 9 6 1 6 3 6 4 6 6 6 8 6 9 70 71 73 11 291 3 5 41 4 5 4 9 51 5 6 5 8 6 0 6 2 6 3 6 5 6 7 6 8 6 9 70 72 1 28 3 4 3 9 4 3 4 7 5 0 5 2 5 5 5 7 5 9 6 6 2 6 3 6 5 6 6 6 8 6 9 71 12 2 7 3 4 3 9 4 3 4 6 4 9 5 1 5 4 5 6 5 8 6 0 6 1 6 3 6 4 6 6 6 7 6 8 70 12 2 7 3 2 3 7 4 1 4 5 4 8 5 0 5 2 5 4 5 6 5 8 6 0 6 1 6 3 6 4 6 5 6 7 6 9 13 2 6 3 2 3 6 4 0 4 4 4 6 4 9 5 2 5 4 5 5 5 7 5 9 6 0 6 2 6 3 6 5 6 6 6 8 13 2 5 3 1 3 5 3 9 4 3 4 5 4 8 5 0 5 2 5 6 5 7 5 9 6 0 62 6 3 6 5 6 6 14 2 4 3 0 3 4 3 8 4 2 4 4 4 7 4 9 5 1 5 3 5 5 5 7 5 8 5 9 6 1 6 2 6 4 6 6 14 2 3 2 9 3 4 3 7 4 1 4 3 4 6 4 8 5 0 5 2 5 3 5 5 5 7 5 8 6 0 6 1 6 2 6 4 15 2 2 2 8 3 2 3 6 4 0 4 2 4 5 4 7 4 9 5 0 5 2 5 4 5 6 5 7 5 9 6 0 6 1 6 3 15 2 2 2 7
20. at average temperature Sp Ht specific heat at average temperature T 2 entering temperature T leaving temperature Recold JW Series Fluid Cooler Load Factors 8 TABLE NO 2 60 WET BULB 62 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 7 6 0 6 4 6 7 72 73 75 77 79 8 0 82 7 5816316669 717275 7779179181 8 5 6 6 0 6 4 6 7 6 9 7 1 73 75 76 78 79 8 0 8 4 9 5 4 5 8 6 2 6 5 6 7 6 9 7 1 73 74 76 78 79 80 8 1 9 4 3 4 8 5 3 5 7 6 0 6 3 6 5 6 8 6 9 71 73 74 76 7 7 78 79 8 0 9 4 1 4 6 5 0 5 8 6 0 6 4 6 5 6 7 6 9 70 72 73 75 76 78 79 10 4 0 4 5 5 0 5 4 5 7 6 0 6 2 6 4 6 6 6 8 6 9 71 73 74 7 5 76 78 10 3 8 4 3 4 8 5 1 5 5 5 8 6 0 6 2 6 4 6 6 6 8 6 9 70 72 73 74 76 11 3 8 43 47 50 6 9 6 1 6 3 6 5 6 6 6 8 6 9 70 72 73 74 11 3 0 3 6 4 2 4 6 4 9 52 7 6 0 6 2 6 3 6 5 67 68
21. 0 4 2 4 3 4 5 4 6 4 7 4 8 5 0 26 1 6 2 0 2 3 2 6 2 9 3 2 3 3 3 5 3 7 3 9 4 0 4 1 4 3 4 4 4 6 4 7 4 8 4 9 26 1 5 2 0 2 3 2 6 2 8 3 1 3 3 3 4 3 6 3 8 3 9 4 1 4 2 4 4 4 5 4 6 4 7 4 9 27 1 5 2 0 2 3 2 6 2 8 3 1 3 3 3 4 3 6 3 8 3 9 4 1 4 2 4 3 4 4 4 6 4 7 4 8 27 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 6 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 6 4 7 28 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 5 3 7 3 8 4 0 4 1 4 2 4 3 4 4 4 6 4 7 28 1 5 1 8 2 2 2 4 2 7 2 9 3 1 3 3 3 5 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 5 4 6 29 1 4 1 8 21 2 4 2 7 2 9 3 1 3 3 3 4 3 6 3 7 3 9 4 0 4 1 4 2 4 4 4 5 4 6 29 1 4 1 8 21 2 3 2 6 2 8 3 0 3 2 3 4 3 5 3 6 3 8 3 9 4 1 4 2 4 3 4 4 4 5 30 1 4 1 8 2 1 2 4 2 6 2 8 3 0 3 2 33 3 5 3 6 3 8 3 9 4 0 4 1 4 3 4 4 4 5 30 1 4 1 7 2 0 2 3 2 5 2 8 3 0 3 1 33 34 3 5 3 7 3 8 4 0 4 1 4 2 4 3 4 4 64 WET BULB 66 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 Zi 5 6 6 1 6 4 6 7 70 71 74 75 77 78 0 7 5 0 5 5 5 9 6 3 6 5 6 8 70 72 74 75 76 78 79 8 0 8 4 8 5 3 5 6 6 0 6 3 6 6
22. 0 164 note 4 2 2 2 nated 4 2 JW130 269 118 100 273 67 91 128 10 188 note 4 2 2 2 4 note Note 1 Use this bulletin for preliminary layouts only Obtain current drawing from your Recold sales representative 2 If required add 6 for positive closure dampers If required add 6 for booster coil section 3 An additional bottom access door is installed on the connection end 4 Consult Recold for coil connection locations 5 If supporting the unit on beams refer to the Recold suggested supporting steel drawing for required mounting hole location Recold JW Series Fluid Cooler Engineering Data ae Fan Motor Air Volume Fan Standard Fan Pump Motor Spray Water Sump Heater Approximate Weight b hp cfm RPM Motor Frame hp GPM kw shipping operating JW10A 2 5280 689 145 Hh 40 20 910 1400 JW10B 2 5150 706 145 40 20 955 1400 JW10C 3 5450 825 182 A 40 2 0 1005 1500 JW15B B 20 1365 2000 JW15C B 20 1435 2400 JW25A 5 40 1850 2800 JW25B 40 1955 2900 JW25C 40 2075 3200 JW35A 1 40 2955 4300 JW35B 1 40 3140 4600 JW35C 1 4 0 3305 5000 JW50A 2 6 0 4380 6700 JW50B 15 29200 397 254 2 150 6 0 4635 7200 JW50C 15 28400 385 254T 2 150 6 0 4885 7600 JW70B 20 37200 385 256T 3 250 8 0 6685 10200 JW70C 25 39000
23. 0 by volume ethylene glycol from 107 F to 85 F with 78 F wet sa Cx Determine Range 107 F 85 F 22 F Range Determine Approach 85 F 78 F 7 F Approach Select Load Factor Enter Table 2 for 78 F wet bulb and select load factor at design range and approach Select 6 0 factor 4 Select Test Unit Model Enter the Unit Rating Table 3 at the 6 0 load factor and read down to the smallest unit flow rating greater than or equal to the design 75 GPM Select the test model JWL35C Correct Flow for Ethylene Glycol The flow correction factor obtained from Table 1 is 1 04 75 GPM x 1 04 78 GPM N g 6 Adjust Model Selection Re enter Table 3 at the 6 0 load factor and make selection based on corrected flow of 78 GPM The adjusted unit selection is the Model JWL50A indicating an 80 GPM rating 7 Determine Flow Limitations Enter Table 3 at unit size determined in Step 6 to select a JWL low flow or JW standard flow unit The Model 50A with 75 GPM design flow falls within the low flow coil limitations The correct unit selection is therefore a JWL5OA Determine Coil Pressure Drop For ethylene glycol pressure drop calculation the conversion factor from Table 5 must be applied to design flow before entering Table 4 75 GPM x 1 05 79 GPM The coil pressure drop for 79 GPM is 2 4 PSI Load BTUH GPM x 500 x Sp Gr x Sp Ht x T T where Sp Gr specific gravity
24. 2 JWH 591 1000 JWL 100 209 85C JW 210 590 1080 85 640 50 40 398 350 25 240 20 70 2 25 107 JWH 591 1000 JWL 100 249 1008 JW 250 650 1701 405 1080 850 660 540 445 48 370 300 250 205 76 17 31 110 JWH 651 1700 JWL 100 200 100 JW 201 559 1805 1505 1170 910 710 50 485 443 400 330 263 22 85 154 4 122 JWH 600 1700 JWL 100 202 115B JW 203 600 1895 1580 1250 995 75 60 50 482 440 360 29 25 20 1 7 59 36 JWH 601 1700 JWL 100 185 15C JW 186 500 700 1370 1060 840 65 50 55 470 390 32 25 220 185 72 49 JWH 501 1700 JWL 100 190 130B JW 191 550 780 100 1150 905 745 615 50 505 415 340 280 230 190 71 54 JWH 551 1700 JWL 100 199 130C JW 200 500 890 1800 1250 980 805 65 67 55 445 370 30 250 200 88 65 JWH 501 1700 Recold JW Series Fluid Cooler Pressure Drop TABLE NO 4 Pressure Drop in PSI For feet of head multiply by 2 31 Model JW JWL JWH APM 10A 10B 10C 15B 15C 25A 25B 25C 35A 35B 35C 50A 50B 50C 70B 70C 85B 85C 100B 100C 115B 115C 130 130C 10 1 1 20 3 5 0 7 0 9 25 52 11 19 08110 30 6 9 1 5 18 1 1 13 07 08 1 1 35 9 1 10 23 15 18 09 10 14 0 7 09 11 40 EUM 24 29 18 22 1 1 14 17 09 1 1 13 07 1 0
25. 2 8 3 4 3 9 4 3 4 6 4 9 5 2 5 4 5 6 5 8 6 0 6 2 6 3 6 5 6 6 6 7 6 9 70 9 27 3 3 381 4 21 4 5 4 8 7 9 6 0 6 2 6 3 16 5 6 6 6 8 6 9 9 2 613 3 6 4 0 4 4 4 7 4 9 5 7 5 9 6 0 6 2 6 3 6 5 6 6 6 8 10 2 5 3 0 3 5 4 0 4 2 4 6 4 8 5 0 5 2 5 4 5 6 5 7 5 9 6 0 6 2 63 6 5 6 6 10 2 44 2 9 3 4 3 8 4 1 4 4 4 7 4 9 5 1 5 3 5 4 5 6 5 7 5 9 6 0 6 2 6 3 6 5 11 2412 9 3 4 13 8 4 1 4 4 4 6 4 8 5 0 5 2 5 4 5 5 5 7 5 8 6 0 6 1 6 3 6 4 11 2 3 2 8 3 3 3 7 4 0 4 2 4 5 4 7 4 9 5 2 5 4 5 5 5 7 5 8 6 0 6 1 6 3 12 2 2 2 8 3 2 3 6 3 9 4 2 4 4 4 6 4 8 5 0 5 2 5 3 5 5 5 6 5 8 5 9 6 1 6 2 12 2 2 2 6 3 1 3 5 3 8 4 0 4 3 4 5 4 7 4 9 5 0 5 2 5 3 5 5 5 6 5 8 5 9 6 1 13 2 1 2 6 3 1 3 4 3 7 4 0 4 2 4 5 4 6 4 8 5 0 5 1 5 3 5 4 5 6 5 7 5 9 6 0 13 2 0 2 5 3 0 3 3 3 6 3 9 4 1 4 3 4 5 4 7 4 8 5 0 5 3 5 4 5 6 5 7 5 9 14 2 0 2 5 2 9 3 3 3 6 3 8 4 0 4 3 4 4 4 6 4 8 4 9 5 1 5 2 5 4 5 5 5 7 5 8 14 1 9 2 4 2 8 3 2 3 4 3 7 3 9 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 4 5 5 5 7 15 1 8 2 3 2 7 3 1 3 4 3 6 3 8 4 1 4 2 4 4 4 6 4 7 4 9 5 0
26. 3 2 3 5 3 9 4 1 4 4 4 6 4 8 4 9 5 1 5 4 5 6 5 7 5 9 6 0 6 2 16 2 1 2 7 3 1 3 5 3 8 4 1 4 3 4 5 4 7 4 9 5 1 5 3 5 4 5 5 5 7 5 9 6 0 6 1 16 2 1 2 6 3 1 3 4 3 7 4 0 4 2 4 4 4 6 4 8 4 9 5 1 5 3 5 4 5 6 5 7 5 8 6 0 5 17 2 1 2 6 3 0 3 4 3 7 4 0 4 2 4 4 4 6 47 49 5 1 5 3 5 4 5 6 5 7 5 8 60 5 17 2 0 2 5 3 0 3 3 3 6 3 9 4 1 4 3 45 4 6 4 8 5 0 54 5 6 5 7 59 5 18 2 0 2 5 2 9 3 3 3 6 3 8 4 1 4 3 4 4 4 6 4 8 4 9 5 1 5 2 5 4 5 5 5 7 5 8 5 18 19 2 4 2 8 3 2 3 5 3 7 4 0 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 3 5 4 5 5 5 7 19 1 9 2 4 2 8 3 1 3 4 3 7 3 9 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 3 5 5 5 7 19 1 8 2 3 2 7 3 0 3 4 3 6 3 8 4 0 4 2 4 4 4 5 4 7 48 5 0 5 1 5 2 5 4 5 5 20 1 8 2 3 2 7 3 0 3 3 3 5 3 8 4 0 4 1 4 3 4 5 4 6 4 8 4 9 5 1 5 2 5 4 5 5 s 20 18 2 2 2 6 2 9 3 2 3 5 3 7 3 9 4 1 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 2 5 4 21 1 8 2 2 2 6 2 9 3 2 3 4 3 7 3 9 4 0 4 2 4 4 4 5 4 7 4 8 5 0 5 1 5 2 5 4 21 1 7 2 2 2 5 2 8 3 1 3 4 3 6 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 9 5 0 5 1 5 2 22 1 8 2 1 2 5 2 8 3 1 3 3 3 6 3 8 3 9 4 1 4 3 4 4 4 6 4 7 4 8
27. 3 3 3 4 3 5 3 637 38 29 14 1 4 16 18 2022 24 25 27 29 30 311 32 33 3 4 3 5 3 6 37 30 11 1 4 1 6 18 2 0 2 2 2 4 2 5 2 7 2 8 2 9 3 1 3 2 3 3 3 4 3 5 3 6 3 7 30 1 0 13 1 5 1 7 2 0 2 1 2 3 2 5 2 6 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 80 WET BULB 82 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 7 2 91 3 514 4 5 4 8 5 5 4 7 9 6 1 6 2 6 4 6 6 6 7 6 8 70 71 72 7 28 34 13 9143 147 5 0 5 3 5 7 5 9 6 1 6 3 6 4 6 5 6 7 6 8 6 9 71 8 27 3 3 3814 2 4 5 4 8 5 1 5 3 5 5 5 7 5 9 6 1 6 2 6 4 6 5 6 6 6 8 6 9 8 26 32 36 4 0 4 4 4 7 4 9 5 2 5 4 5 6 5 8 5 9 6 1 6 2 6 4 6 5 6 6 6 8 9 2 5 13 0 3 5 3 9 4 3 45 48 50 5 2 5 4 5 6 5 7 5 9 61 6 2 6 3 6 5 6 6 9 2 4 2 9 34 3 8141 4 4 4 7 4 8 5 0 5 3 5 4 5 6 5 8 5 9 6 2 6 4 6 5 6 6 10 2 3 2 8 3 3 3 7 4 0 4 3 4 5 4 8 4 9 5 1 5 3 5 5 5 6 5 8 5 9 6 1 6 2 6 4 10 2 2 2 7 3 2 3 6 3 9 4 2 4 4 4 6 4 8 5 0 5 1 5 5 5 6 5 8 5 9 6 1 6 2 11 2 2 2 7 3 2 3 6 3 9 4 1 4 4 4 5 4 7 4 9 5 1 5 3 5 4 5 6 5 7 5 9 6 0 6 2 11 2 1 2 6 3 0 3 4 3 7 4 0 4 2 4
28. 3 9 4 1 4 2 4 4 4 5 4 7 4 8 49 5 1 5 2 19 1 7 2 1 2 4 2 7 3 0 3 2 3 5 3 7 3 8 4 0 4 1 4 3 4 4 4 6 4 7 4 8 4 9 5 1 amp 20 16 2 0 2 4 2 7 3 0 3 2 3 4 3 6 38 3 9 4 1 4 2 44 4 5 4 7 4 8 4 9 5 1 amp 20 1 6 2 0 2 3 26 29 31 33 3 5 3 7 38 4 0 4 1 4 3 4 4 4 5 4 7 4 8 4 9 21 1 6 2 0 2 3 2 6 2 9 3 1 3 2 3 5 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 7 4 8 4 9 21 1 5 1 9 2 3 2 5 2 8 3 0 3 2 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 6 4 7 4 8 22 1 5 1 9 2 2 2 5 2 8 3 0 3 2 3 4 3 6 3 7 3 9 4 0 4 2 4 3 4 4 4 5 4 7 4 8 22 1 5 1 9 2 2 2 5 2 7 2 9 3 1 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 3 4 4 4 5 4 6 23 1 4 1 8 2 2 2 4 2 7 2 9 3 1 3 3 3 5 3 7 3 8 3 9 4 1 4 2 4 3 4 4 4 5 4 7 23 1 4 1 8 2 1 2 4 2 6 2 9 3 1 3 2 3 4 3 5 3 7 3 8 3 9 4 1 4 2 4 3 4 4 4 5 24 1 4 1 8 2 1 2 4 2 6 2 8 3 0 3 2 3 4 3 5 3 7 3 8 3 9 4 0 4 2 4 3 4 4 4 5 24 1 3 1 7 2 0 2 3 2 5 2 8 3 0 3 1 3 3 3 4 3 6 3 7 3 8 3 9 4 1 4 2 4 3 4 4 25 13 1 7 2 0 2 3 2 5 2 7 2 9 3 1 3 3 3 4 3 6 3 7 3 8 3 9 4 0 4 2 4 3 4 4 25 1 3 17 2 0 2 2 2 4 2 7 2 9 3 0 3 2 3 3 3 5 3 6 3 7 3 8 3 9 4 1 4 2 4 3 26 1 3 1 7
29. 4 4 5 4 6 25 1 4 1 8 2 1 2 4 2 6 2 8 3 0 3 2 3 4 3 5 3 7 3 8 3 9 4 0 4 1 4 3 4 4 4 5 26 1 4 1 8 2 1 2 4 2 6 2 8 3 0 3 2 3 3 3 5 3 6 3 8 3 9 4 1 4 2 4 3 4 4 4 5 26 1 4 1 7 2 0 2 3 2 5 2 7 2 9 3 1 3 3 3 4 3 6 3 7 3 8 3 9 4 0 4 2 4 3 4 4 27 1 4 1 7 2 0 2 3 2 5 2 8 2 9 3 1 3 3 13 4 3 5 3 8 3 8 4 0 4 1 4 2 4 3 4 4 27 1 3 1 7 2 0 2 2 2 5 2 7 2 9 3 0 3 2 3 3 3 5 3 6 37 3 8 4 0 4 1 4 2 4 3 28 1 3 1 6 1 9 2 2 2 4 2 7 2 8 3 0 3 2 3 3 3 5 3 6 3 7 3 9 4 0 4 1 4 2 4 3 28 1 3 1 6 1 9 2 2 2 4 2 6 2 8 3 0 3 1 3 3 3 4 3 5 3 7 3 8 3 9 4 0 4 1 4 2 29 1 3 16 1 9 2 0 2 4 2 6 2 8 2 9 3 1 3 3 3 4 3 5 3 6 3 8 3 9 4 0 4 1 4 2 29 12 15 1821232527 2 9 310 32 33 34 36 37 38 39 40 4 30 1 2 1 5 1 8 2 1 2 3 2 5 2 7 2 8 3 0 3 2 3 3 3 4 3 5 3 7 3 8 3 9 4 0 4 1 30 1 2 1 5 1 8 2 0 2 2 2 4 2 6 2 8 2 9 3 1 3 2 3 3 3 5 3 6 3 7 3 8 3 9 4 0 Recold JW Series Fluid Cooler Load Factors
30. 5 3 7 3 8 4 0 4 1 4 2 4 3 4 4 29 1 3 16 1 9 2 2 2 4 2 7 2 9 3 0 3 2 3 4 3 5 3 6 3 7 3 9 4 0 4 1 4 2 4 3 30 1 3 1 6 1 9 2 2 2 4 2 7 2 9 3 0 3 2 3 3 3 4 3 6 3 7 3 9 4 0 4 1 4 2 4 3 30 1 3 16 1 9 2 1 2 3 2 6 2 8 2 9 3 1 3 3 3 4 3 5 3 6 3 8 3 9 4 0 4 1 4 2 68 WET BULB 70 WET BULB RANGE RANGE 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 T 4 4 4 9 5 1 5 7 6 1 6 4 6 6 6 9 70 72 74 75 76 78 79 7 4 2 48 52 5 6 60 6 3 6567 6 9 71 72 74 75 77 78 79 8 0 8 4 0 4 6 5 0 5 4 5 7 6 0 6 2 6 5 6 6 6 8 7 0 71 72 74 75 76 77 8 3 2 3 9 4 4 4 9 5 3 5 6 5 9 6 1 6 3 6 5 6 7 6 9 70 71 73 74 75 76 9 3 7 43 47 51 4 6 9 6 6 3 6 5 6 6 6 8 6 9 71 72 173 75 9 3 0 3 6 4 2 4 6 4 9 5 2 5 8 5 9 6 2 6 3 6 5 6 6 6 8 69 70 72 73 10 2 9 3 5 4 0 4 4 4 8 5 1 5 3 5 6 5 7 6 0 6 1 6 3 6 5 6 6 6 7 6 8 70 71 10 2 8 3 4 3 9 4 3 4 6 4 9 5 2 5 4 5 6 5 8 6 0 6 2 6 3 6 4 6 6 6 7 6 9 70 1 2 7 3 3 3 8 4 2 4 6 4 9 5 1 5 7 5 9 6 1 6 2 6 4 6 5 6 7 6 8 6 9 11 2 6 3 2 3 7 4 1 4 4 4 7 5 0 5 2 5 4 5 6 5 9 6 1 6 2
31. 70 71 72 73 12 2 9 3 5 4 0 4 5 48 5 1 5 4 5 6 5 8 6 0 6 2 6 4 6 5 6 6 6 8 6 9 70 72 12 2 8 3 5 4 0 4 4 4 7 5 0 5 3 5 5 5 7 5 9 6 1 6 3 6 4 6 5 6 7 6 8 7 0 71 13 2 8 3 2 3 8 4 2 45 4 9 51 541556 5 8 6 2 6 3 6 4 6 5 6 7 6 8 6 9 13 2 7 3 3 3 7 41 4 5 4 8 5 5 3 5 5 5 5 9 6 0 6 2 6 3 6 5 6 6 6 8 6 9 14 2 5 3 1 3 6 4 0 4 3 4 6 4 9 5 1 5 5 5 7 5 9 6 0 6 2 6 3 6 4 6 6 6 8 14 2 5 3 1 3 5 3 9 4 3 4 6 4 8 5 0 5 2 5 5 5 6 5 8 5 9 6 1 6 2 6 3 6 5 6 7 15 2 4 3 0 3 5 3 9 4 1 4 5 4 7 4 9 5 2 5 4 5 7 5 8 6 0 6 1 6 3 6 4 6 6 15 2 2 2 9 3 3 3 7 4 1 4 3 4 6 4 8 5 0 5 2 5 4 5 7 5 8 6 0 6 1 6 3 64 16 2 3 2 8 3 3 3 7 4 0 4 3 4 6 4 8 4 9 5 1 5 3 5 5 5 6 5 7 5 9 6 1 6 3 6 4 16 2 2 2 8 3 0 3 6 3 9 4 2 4 4 4 6 4 8 5 1 5 2 5 4 5 5 5 7 5 8 6 0 6 1 6 3 c 17 2 2 2 7 3 2 13 6 3 9 4 1 4 4 4 6 4 8 4 9 5 1 5 3 5 4 5 7 5 8 5 9 6 0 6 2 c IT ZT 27 3 35 38 4 17 43 45 47 4 91 5 0 b 2 54 55 7 58 60 6 1 5 18 2 1 2 6 3 0 36 3 8 4 0 4 2 4 4 4 6 4 8 4 9 5 1 5 3 5 4 5 6 5 8 5 9 6 0 5 18 21 2 5 3 0 3 4 3 7 3 9 4 2 4 4 4 5 47 4 9 0 5 2 5 5 5 6 5 8 5 9 19 2 0 2 5
32. 9 2 2 2 5 2 7 3 0 3 2 3 4 3 6 3 7 3 8 4 0 4 1 4 3 4 4 4 5 4 6 47 Ex 19 1 5 1 9 2 2 2 5 2 7 3 0 3 2 3 4 3 5 3 7 3 8 4 0 4 1 4 2 4 4 45 4 6 4 7 19 14 1 8 2 1 2 4 2 6 29 3 1 3 3 3 4 3 6 3 7 3 9 4 0 4 1 4 2 4 3 4 5 4 6 amp 20 14 18 2 1 2 4 2 6 2 9 3 1 3 2 3 4 3 5 3 7 3 8 3 9 4 1 4 2 4 3 4 4 4 5 amp 20 1 4 1 7 2 0 2 3 2 5 2 8 3 0 3 2 3 3 3 5 3 6 3 7 3 8 4 0 4 1 4 2 4 3 4 4 21 1 4 1 7 2 0 2 3 2 5 2 8 3 0 3 1 3 3 3 4 3 6 3 7 3 8 4 0 4 1 4 2 4 3 4 4 21 1 3 1 7 2 0 2 2 24 2 7 2 9 3 1 3 2 3 4 3 5 3 6 3 7 3 9 4 0 4 1 4 2 4 3 22 1 3 1 7 1 9 2 2 2 4 2 7 2 9 3 0 3 2 3 3 3 5 3 6 3 7 3 9 4 0 4 1 4 3 4 3 22 1 3 1 6 1 9 2 1 2 4 2 6 2 8 3 0 3 1 3 3 3 4 3 5 3 6 3 8 3 9 4 0 4 1 4 2 23 1 3 1 6 19 2 1 2 4 2 6 2 8 2 9 3 1 3 3 3 4 3 5 3 6 3 7 3 9 4 0 4 1 42 23 12 15 182123252729 3 0 32 33 34 3 5 36 3 8 3 9 4 0 4 1 24 1 2 1 5 18 2 1 2 3 2 5 2 7 2 8 3 0 3 2 3 3 3 4 3 5 3 6 3 8 3 9 4 0 4 0 24 1 2 1 5 1 7 2 0 2 2 2 4 2 6 2 8 2 9 3 1 3 2 3 3 3 4 3 5 3 7 3 8 3 9 3 9 25 12 15117 2022 24 26 2 6 2 9 3 32 33 34 35 327 38 39 39 25 111 1 4 17 19 21 233 2 5 2 7
33. 98 80 10 8 9 0 12 1 10 0 TABLE 5 Ethylene Glycol Flow conversion Ethylene Glycol by Volume Note For ethylene glycol pressure drop calculation the Factor 20 30 40 50 conversion factor from Table 5 must be applied to design flow before entering Table 4 1 04 1 05 1 05 1 06 Recold JW Series Fluid Cooler Accessories CAPACITY CONTROLS Dual Fan Motors The dual fan motor package is available as a proven energy saving capacity control option It consists of furnishing a high efficiency motor a 1200 RPM low speed motor two sets of drives and belts extended fan shaft and motor bases on opposite sides of the blower A UL control starter panel is available as a completely wired package for one point connection Variable Speed Drive A Variable Speed Drive automatically minimize the tower s noise level during periods of reduced load and or reduced ambient temperature without sacrificing the system s ability to maintain a constant cold water temperature This is a relatively inexpensive solution and can pay for itself quickly in reduced energy costs Electric Damper Controls An electric damper control package is available as an accessory for modulating the internal damper system A proportional solid state actuator is factory mounted below the fan scroll and attached to the damper shaft by connecting linkage A sensing bulb connected to the actuator by a capillary tube is normally mounted in the unit pan wate
34. g has curved inlet rings for efficient air entry and discharge into the pan Fans are mounted on a solid steel shaft coated to resist corrosion Heavy duty pillow block type self aligning ball bearings are located at each end of the fan shaft No intermediate bearings are i Lel required 2 Water make up is provided Extended lube lines are supplied as standard by a solid brass float valve with arm equipment to allow servicing bearings without and float ball installed in an external float removal of fan guard screens box This allows easy observation of the water f WATER CIRCULATION PUMP operating level and maintenance of the valve with unit The water circulation pump is a close coupled bronze Int Operator fitted centrifugal type with mechanical seal Each pump is factory mounted and piped Standard motor Is open drip proof suitable for outdoor service Construction The Evaporative Fluid Cooler sump pan is constructed of 300 stainless steel and casing panels are constructed of heavy gauge G 235 galvanized steel The sump pan and casing panels are flanged outward so that all the connecting fasteners are located outside the flooded section of the unit to help prevent leaks in the unit and provides a more permanent watertight joint To provide further protection from corrosion no welded joints are located below the water line The unit is designed for a 30 psf on any projected area and ships in one piece on a
35. hylene glycol water solution The solution freeze points with respective ethylene glycol by volume are given in Table 11 below This method will allow freeze protection irrespective of heat load or unit shut down Some applications will not permit the use of an ethylene glycol solution Under these circumstances other means of freeze protections must be used and the following rules strictly adhered to 1 Maintain full flow through the coil 2 Maintain heat load on the coil at all time so that the leaving water temperature does not drop below 50 F Full flow alone will not protect the coil Temperature of 50 F must also be maintained Methods of maintaining the recommended fluid temperature may vary with system design and operation A simple means of preventing heat loss may be to locate the unit indoors allowing a heated atmosphere Adequate space and ductwork must be provided for proper operation Units operating in low ambient conditions with a heat load which becomes very low or drops off completely may require the addition of an artificial load to maintain safe fluid temperature The amount of artificial load required may be reduced by means of discharge positive closure dampers The addition of the dampers will prevent induced air circulation or the chimney effect which may occur during unit shut down The above methods of coil freeze protection when properly applied and maintained will provide good equipment protection
36. into the remote sump tank which is in a heated atmosphere The remote sump installation may be unacceptable in some cases due to unit location or space limitations For these applications pan water freeze protection may be attained by means of an optional electric heater located inside the unit pan Electric pan heaters are designed to prevent pan water freezing during unit shut down with fans and pumps idle Water lines to and from the unit pump pump discharge and drain lines must be wrapped with a heat tracing element and insulated to protect them from freezing Table 1 Glycol Flow Correction Factors Ethylene Design Flow GPM Unit Model Glycol g JW JWL By Volume 40 50 70 90 100 125 150 175 Above 20 07 105 102 1 00 1 00 1 00 100 100 1 00 30 AQ 107 102 101 100 100 100 100 00 10A thru 35C 4096 q 7505 001 1700 100 100 100 00 50 AG 108 101 100 101 110 10 20 12 109 105 103 102 100 1 00 1 00 10 30 1 2 107 TOM 1 2 1000 10 50A thru 50C 40 139 138 111 106 104 1100 100 100 50 123 121 114 108 105 6101 3 0 100 100 2096 115 1 11 109 106 1 04 103 101 100 1 00 30 1 8 1 11 107 1 05 103 101 100 1 00 70B thru 130 40 120 145 110 107 105 103 100 1 00 50 123 120 141 111 1 07 1 04 1 00 1 00 EXCHANGE COIL PROTECTION The best means of heat exchanger coil freeze protection is to circulate an et
37. ll heaters and controls are factory installed for field wiring by others NOTE Pan heater packages are designed to prevent pan water freezing during unit shutdown with fans and pump idle CAPACITY BOOSTER COIL A finned coil mounted on top of the eliminator section is available primarily for applications with high entering fluid temperatures or for applications where dry operation under low entering air temperatures is anticipated Copper tube with aluminum or copper fin coils are available VIBRATION ISOLATORS Spring type vibration isolator rails may be supplied for field installation most units will require an intermediate rigid steel framework between the isolators and the base of the unit to provide adequate structural support for the unit Consult Recold sales representative for recommendations on any vibration isolation application STAINLESS STEEL CONSTRUCTION 300 stainless steel construction is offered as an option for sump pan and upper casing panels SP COOLING TECHNOLOGIES RECOLD PRODUCTS 550 W MERCURY LANE BREA CALIFORNIA 92821 UNITED STATES 704 529 6080 info recold com spxcooling com In the interest of technological progress all products are subject to design and or material change without notice 2008 SPX Cooling Technologies Inc Printed in USA RECOLD JW TECH 08
38. many years of durable dependable service with minimal maintenance requirements Quality materials and workmanship are a key factor in meeting this objective FAN MOTORS DRIFT ELIMINATORS Fan motors furnished as standard equipment are open Eliminators are constructed of PVC assemblies in drip proof type suitable for outdoor service Motors removable easy to handle sections Each section has have a 1 15 service factor and are mounted on a a three break design allowing three changes in air heavy duty adjustable base located for easy access flow and measure approximately 5 inches in depth FAN GUARD SCREENS The use of durable PVC eliminates the corrosion All moving parts are protected with OSHA approved problems associated with galvanized eliminators galvanized steel screens Each guard is easily HEAT EXCHANGE COIL removed for access to the fan Coil tube bundle is constructed of copper FAN SECTION tubing with stainless steel tube sheets and copper headers The copper construction offers a noncorrosive coil for extended service life ACCESS DOORS Large rectangular access doors are strategically located to provide access to both upper water distribution system and lower pan basin The patented doors provide a complete air and water tight seal without the use of gaskets or fasteners WATER MAKE UP The centrifugal fan is forward curved statically and dynamically balanced and constructed of galvanized steel The fan housin
39. minimum 6 high stainless steel channel base to help in handling and installation of the unit Recold JW Series Fluid Cooler Schematic 4 gt gt ELIMINATOR K ACCESS c L7 mL INLET ACCESS OUTLET SPRAY HEADER CLEANOUT INLET lt CONNECTION 9 T G B OUTLET i CONNECTION 7 EXTERNAL FLOAT BOX F i49 1 1 l po 7l MOUNTING WATER SUPPLY Q haak 0 BRANN p VER B D gt HOLE 4 Access Doors Overflow Water Model Dimensions Far Side Near Side Ein rcu A B C D F G H J K L Top Bottom Top Bottom P 0 JW10 80 76 31 84 325 gy 6 53 13 1 1 24 JW15 96 76 37 102 31 gy 6 65 16 1 1 254 JW25 1154 77 45A 124 34 gi 51A 6 76 20 1 1 1 25 Wu JW35 139 80 55 144 38 95 51 6 92 14 1 1 1 254 note JW50 1724 92 66 180 41 gy TW 6 115 1 2 1 2 ies 24 t JW70 184 93A 192 47 gy 84 8 115 note 4 2 1 2 3 note JW85 208 9334 217 47 gy 967 8 139 note 4 2 1 2 M 3 2 JW100 221 118 100 225 67 19 80 10 1397 note 4 2 2 2 a 4 note 2 JW115 245 1187 10077 249 67 19 104 1
40. n appropriate tables to determine the load factor 4 Select Unit Model Table 3 the load factor determined in step 3 falls between 3 0 and 3 5 Enter the 3 0 column and read down to the smallest unit flow rating which is greater than or equal to 225 GPM For the Model JWL35B interpolate between 245 and 190 GPM to determine the flow rating at the 3 3 load factor Interpolation gives a rating of 212 GPM which is less than the design requirement Select a Model JWL35C and again interpolate between load factor columns to determine flow rating The second selection provides a flow rating of 245 GPM which exceeds the design requirement The correct unit size is therefore a Model 35C 5 Determine Flow Limitations Enter Table 3 at unit size determined in Step 4 to select a JWL low flow or JW standard flow unit The Model 35C with 225 GPM design flow falls within the standard coil flow limitations The correct unit selection is therefore a JW35C 6 Determine Coil Pressure Drop Enter the Coil Pressure Drop Table at 225 GPM and read across to the unit model column to select pressure drop In this example pressure drop equals 4 8 PSI N DEFINITIONS Range the difference between the entering and leaving water temperatures WT in WT out Approach the difference between the leaving water temperature and the web bulb temperature WT out WB ETHYLENE GLYCOL EXAMPLE Select a unit to cool 75 GPM of 4
41. r basin for monitoring the system However when specified a pressure control may be supplied for field mounting to allow direct head pressure control An end switch located inside the motor actuator may be adjusted to cycle the fan motor on for pressure rise and off when dampers close COIL CASING INSULATION In order to further reduce the heat loss from the unit coil insulation factory installed on exterior coil panels is available A protective coat of paint is applied to the insulation for protection from the weather elements POSITIVE CLOSURE DAMPERS Many times during unit shutdown with fan and pump off it is desirable to conserve the amount of heat loss from the process fluid For those applications closure dampers are available for this installation at the air discharge of the fluid cooler The damper package is designed to prevent convective air flow through the idle unit thus minimizing the heat loss Installation of the closure dampers requires all wiring to be completed in the field An electric actuator is factory mounted however controls are to be supplied by others The damper actuator should be wired into the field control system to allow the dampers to fully open when the fan cycles on and close when the fan cycles off The actuator requires a 115V power supply ELECTRONIC WATER LEVEL CONTROL The electronic water level control package provides a constant and accurate means of monitoring water level in the unit For thi
42. s reason it is often recommended for those installations which require year round operation in low ambient conditions The complete package includes an electric float switch with stilling chamber which is factory installed in the pan section of the unit An electric solenoid valve for water make up is shipped loose for remote installation All wiring must be provided in the field by others PUMP STRAINER Pump intake extension and a cleanable non ferrous pump strainer in an easy access location is available MODIFICATIONS TO WATER DISTRIBUTION SYSTEM Various package are available to provide manual or automatic change over as a backup system in the event of a spray pump failure PAN HEATER The use of a remote sump tank located indoors is a common form of pan water freeze protection for evaporative cooling equipment However for those installations which will not allow this type of system freeze protection may be provided by electric immersion heaters or steam or hot water coils installed in the pan The electric heater package consists of immersion heaters installed in the pan to provide efficient even heat distribution Standard heaters are selected to provide approximately 40 F pan water at 10 F ambient temperature A low water cutout switch is supplied to prevent heater operation when the elements are not completely submerged The heaters are monitored by a sump thermostat with remote sensing bulb located in the pan water A
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