Liebert® Air-Cooled, Direct-Drive Drycoolers
Contents
1. 069 4 8 2 4 9 2 1 1 1 3 8 092 6 12 16 3 7 13 9 1 1 1 5 8 109 8 1 1 1 1 3 8 4 9 18 6 109 16 1 1 2 1 8 112 8 1 1 1 3 8 5 8 22 0 112 16 26 1 1 2 1 8 139 8 16 4 8 18 2 1 1 2 1 8 174 8 16 24 a 6 9 26 2 1 1 2 1 8 197 8 16 32 9 34 1 1 2 1 8 225 16 26 11 1 42 1 1 1 2 1 8 260 16 24 10 0 37 8 1 1 2 1 8 310 16 32 s 13 1 50 0 1 1 2 1 8 350 16 32 1 1 2 1 8 19 4 73 3 350 48 1 1 2 5 8 352 16 24 13 1 49 6 1 1 2 1 8 419 16 32 17 4 65 9 1 1 2 1 8 466 26 1 1 2 1 8 4 22 0 83 3 466 40 1 1 25 8 491 16 1 1 2 1 8 26 3 99 6 491 32 48 1 1 2 5 8 620 32 64 27 0 102 2 2 2 2 1 8 650 40 52 2 2 2 1 8 33 0 124 9 650 80 6 4 4 2 1 8 700 32 64 2 2 2 1 8 40 0 151 4 700 96 4 4 2 1 8 790 32 64 35 0 132 5 2 2 2 1 8 880 52 2 2 2 1 8 44 0 166 5 880 80 8 4 4 2 1 8 940 32 64 2 2 2 1 8 52 0 196 8 940 96 4 4 2 1 8 Standard Circuiting 12 Site Preparation Table 4 Liebert Quiet Line drycooler piping connection sizes and internal volume Drycooler No of Internal No of Internal Volume No of inier Outer Connectien slzs Model Coil Circuits Fans gal L Inlets Outlets OD Copper in ID Sweat in 040 4 8 2 4 9 2 1 1 1 3 82. 4356mm 86 3 4 2203mm 87 1 8 2213mm an 962mm X 18 457mm 70 1778mm 164 1 1 2 38mm 4166mm diameter hole for rigging typ 4 Emerson recommends a clearance of 36 915mm on each side for proper operation and component access 80 2032 mm gt Eight Fan Drycooler 84 3 4 2153 mm Site Preparation Figure 8 Typical drycooler footprint dimensions 4 25 4mm 1 3 4 4 1 4 44 5mm 108mm 50 8mm um 1 34 44 5mm Cay 9 16 14mm Typical Diameter 4 1 4 108mm Figure 9 Piping connection locations for 1 2 3 and 4 fan drycoolers Inlet connection upper header Outlet connection lower header Figure 10 Piping connections for 6 and 8 fan drycoolers Vent opening inlet typ 2 on Inlet connection upper headers typ Outlet connection lower headers typ DPNOOO0668 Rev 1 11 Site Preparation Table 3 Standard drycooler piping connection sizes and internal volume Drycooler No of Internal No of Internal Volume No of net amp Outlet Connection Size Model Coil Circuits Fans gal L Inlets Outlets OD Copper in ID Sweat in 033 4 1 2 4 6 1 1 1 3 8
3. 6 0 60 30 8 38 1 101 125 1 5 2 5 1 5 2 5 25 2 5 60 6 0 60 6 0 6 0 60 6 0 6 0 38 4 45 7 126 150 1 5 4 0 1 5 2 5 40 4 0 60 6 0 60 6 0 6 0 10 0 6 0 6 0 Drycooler Types Without Pump Controls D DNL D DNT Control Wire Number of Fans Run m ft 1 4 6 amp 8 1 2 3 4 6 8 7 9 15 2 26 50 1 0 1 0 1 0 1 0 1 0 1 0 1 0 2 5 15 5 22 8 51 75 1 0 1 0 1 0 1 0 1 0 1 5 1 5 4 0 23 2 30 4 76 100 1 0 1 0 1 0 1 0 1 0 1 5 2 5 4 0 30 8 38 1 101 125 1 0 1 5 1 0 1 5 1 5 2 5 2 5 6 0 38 4 45 7 126 150 1 0 1 5 1 0 1 5 1 5 2 5 4 0 6 0 Table based on 1 0 mm min wire size 0 5 Amp per contactor 1 to 1 5 Volt maximum drop amp 40 C 104 F average ambient temperature 28 Installation 3 9 High Voltage Electrical Connections Electrical service is required for all models Electrical service shall conform to national and local elec trical codes Refer to equipment nameplate regarding wire size and circuit protection requirements Refer to electrical schematic when making connections Refer to Figures 21 and 22 for electrical ser vice entrances into unit A manual electrical disconnect switch should be installed in accordance with local codes Consult local codes for external disconnect requirements A WARNING Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies
4. 29 3 3 3 3 3 88 9 2 15 15 3 39 47 3 3 3 3 3 10 2 11 0 15 20 3 4 3 5 2 3 3 3 3 3 10 6 11 5 15 30 3157 69 3 3 3 3 3 12 0 13 2 15 50 3 8 5 10 4 3 3 3 3 3 14 8 16 7 20 75 3 119 147 3 3 3 3 3 18 2 21 0 30 10 0 3 14 9 18 4 3 3 3 3 3 21 2 247 35 15 3 21 9 272 3 3 3 3 3 28 2 33 5 50 575 3 60 0 75 3 2 0 2 3 15 3 27 30 1513 34 37 15 3 41 44 15 3 55 58 15 3 69 72 15 15 3 31 37 1573 38 44 15 3 45 51 1513 52 58 15 3 66 72 15 3 80 86 15 203 34 41 15 3 41 48 15 3 48 55 15 3 55 62 15 3 69 76 15 3 83 9 0 15 30 3 46 56 15 3 53 63 15 3 60 70 15 3 67 77 15 3 81 91 15 3 9 5 105 15 50 3 68 83 15 13 75 9 0 15 3 82 97 15 3 89 10 4 15 3 103 11 8 15 3 11 7 13 2 15 75 3 97 120 20 3 10 4 127 20 8 11 1 13 4 20 3 11 8 141 20 8 122 155 20 3 14 6 16 9 25 10 0 3 117 145 25 3 124 152 25 3 131 159 25 3 13 8 166 25 3 152 180 25 3 16 6 19 4 30 15 3 177 220 35 8 18 4 22 7 35 3 19 1 23 4 40 3 19 8 24 1 40 3 21 2 255 40 8 22 6 26 9 40 Values are calculated per UL 1995 Pump FLA values used are based on NEC tables for motor horsepower OPD values may be adjusted higher than calculations to compensate for maximum anticipated application temperatures May require electrical component s with higher
5. Strainer clogged or dirty Remove strainer plug and clean Pump cavitating erratic gauge operation Possibility of air in lines Bleed all components Check surge tank to pump inlet connection Check for piping restrictions 40 Troubleshooting NOTES 41 Troubleshooting 42 Ensuring The High Availability Of Mission Critical Data And Applications Emerson Network Power the global leader in enabling business critical Technical Support Service continuity ensures network resiliency and adaptability through Web Site a family of technologies including Liebert power and cooling www liebert com technologies that protect and support business critical systems Monitoring Liebert solutions employ an adaptive architecture that responds liebert monitoring emerson com 800 222 5877 Outside North America 00800 1155 4499 Single Phase UPS amp Server Cabinets liebert upstech emerson com 800 222 5877 Outside North America 00800 1155 4499 Three Phase UPS amp Power Systems 800 543 2378 Outside North America 614 841 6598 Environmental Systems 800 543 2778 Outside the United States 614 888 0246 Locations United States 1050 Dearborn Drive P O Box 29186 For More Information Columbus OH 43229 866 787 3271 Europe Sales PTSdcs com Via Leonardo Da Vinci 8 DATA CENTER SOLUTIONS Zona Industriale Tognana 35028 Piove Di Sacco PD Italy 39 0499719111 to changes in criticality densi
6. 057 12 1 1 1 5 8 3 7 13 9 057 16 1 1 1 2 1 8 060 8 1 1 1 3 8 4 9 18 6 060 16 1 1 2 1 8 080 8 16 8 18 2 1 1 2 1 8 111 16 24 2 6 9 26 2 1 1 2 1 8 121 16 32 9 0 34 0 1 1 2 1 8 158 16 24 10 0 37 9 1 1 2 1 8 173 16 32 3 13 1 50 0 1 1 2 1 8 178 16 32 1 1 2 1 8 19 4 73 3 178 48 1 1 2 5 8 205 16 24 7 13 1 50 0 1 1 2 1 8 248 16 32 17 4 65 9 1 1 2 1 8 347 32 64 27 0 102 2 2 2 2 1 8 356 32 64 6 2 2 2 1 8 39 3 148 8 356 96 4 4 2 1 8 453 32 64 35 0 132 5 2 2 2 1 8 498 32 64 8 2 2 2 1 8 52 6 199 1 498 96 4 4 2 1 8 Standard circuiting 13 Installation 3 0 INSTALLATION 3 1 Equipment Inspection Before unpacking the drycooler verify that the labeled equipment matches the bill of lading Care fully inspect all items for damage either visible or concealed Report any damage immediately to the carrier and your local Emerson representative File a damage claim with the carrier and send a copy to your local Emerson representative 3 1 1 Packing Material A Y All material used to package this unit is recyclable Please save 1t for future use or L dispose of the material appropriately R SAFETY INFORMATION KT A WARNING Risk of improper handling Can cause equipment damage injury or death Read all of the following instructions before attempting to move lift remove
7. 1 8 28 6mm knockout terminals for three phase Connection terminal for field provided in bottom of electric i i i i box pump option only supplied earth grounding wire Electric service Earth ground bar 50Hz Single phase not by Liebert Connection terminals with factory Three phase not by Liebert For ground from each high voltage component three phase pump option only for field supplied earth grounding wire DPNO000277 Refer to specification sheet for full load amp and wire size amp ratings Rev 1 V 30 Installation Figure 22 Electrical field connections for drycoolers with integral pump controls Electrical service connection Factory wired to 24V terminals when factory Class control circuit Factory wired to components disconnect is not supplied Electric service connection Fuse block supplied on on electric panel terminals when factory i DNT drycoolers disconnect is supplied Factory installed Unit Alarm Connection disconnect switch Field supplied 24V optional Class 2 wiring to Terminals 24 amp 50 LPR to indicate Standby Glycol a Pump On Supplied with dual pump controls 7 4 only lt Y PO E i LA o Control interlock Field supplied Class 2 wiring to interlock drycooler 24V controls to Liebert room unit Not required on CSU 3000 7 8 Pump fuses amp overload 22 2mm diameter heaters shipped with hole provided in standard pump packages
8. 1199 929 356x 79x 142 4 0 D 350 855 388 950 431 1230 558 D 352 940 426 1070 486 1370 622 D 419 i 1020 463 1160 527 179x30x55 171 1460 663 180x31 x56 181 D 466 1050 476 1250 568 455x 76x 140 4 8 1550 704 457 x 79 x 142 5 1 D 491 1100 499 1340 608 1640 745 D 620 1780 808 1940 881 2390 1085 EE 144 x 37 x 97 299 145 x 38 x 97 309 D 650 6 1830 831 2000 908 ace o4 246 a5 2490 1112 sca 97x 246 88 D 700 1880 854 2060 935 2510 1140 D 790 2250 1022 2550 1158 3050 1385 ER 184 x 37 x 97 382 185 x 38 x 97 395 D 8s80 8 2330 1058 2730 1239 i57 o4 x 246 108 9290 0449 470 097x246 112 D 940 2430 1103 2910 1321 3410 1548 Site Preparation Table 2 Liebert Quiet Line drycooler net weights shipping weights dimensions and volume approximate Domestic Export Packaged Dimensions Packaged Dimensions Net Weight Weight LxWxH Volume Weight LxWxH Volume Model Fans Ib kg Ib kg in cm ft m3 Ib kg in cm ft m3 D 040 375 170 410 186 495 225 um 59 x 30 x 55 56 60 x 31 x 56 60 Der d 395 179 430 1959 J 50x76x140 16 319 234 l 52x79x142 1 7 D 060 415 188 450 204 535 243 D 080 500 227 565 256 650 295 mE 97 x 30 x 55 93 98 x
9. 31 x 56 98 Di 2 540 245 605 278 246x76x140 2 6 6906313 l 049x79x142 2 8 04123 580 263 645 293 730 331 D 158 735 333 825 374 910 413 ate 139 x 30 x 55 133 140 x 31 x 56 141 D i73 3 795 861 885 401 353 765x140 3 8 5 9 440 56x 79 142 4 0 D 178 855 388 860 390 945 429 D 205 i 940 426 1070 485 179 x 30 x 55 171 1155 524 180 x31 x56 181 D 248 1020 463 1160 526 455x76x140 4 8 1245 565 457 x 79x 142 5 1 D 347 1780 808 1940 880 144 x 37 x 97 299 2390 1084 145x38x97 309 D 356 1880 854 2060 934 366 x 94 x 246 8 5 2510 1139 368 x 97 x 246 8 8 D 453 8 2250 1022 2550 1157 184x37x97 382 3050 1383 185 x 38 x 97 395 D 498 2430 1103 2910 1320 467 x 94 x 246 10 8 3410 1547 470 x 97 x 246 11 2 Site Preparation Figure 5 Drycooler planning dimensional data One and two fan units 43 9 16 1106mm 91 1 2 2324mm 51 1 2 43 9 16 1308mm 1106mm 43 3 16 44 1097mm 1118mm 18 UST 84 Note Overall height to the top of fan guard i 2134mm 43 1 8 1095mm i fee an Emerson recommends a clearance of 36 915mm on each side for proper operation and component lt 42 Anchor access 1067 mm Plan ra mE Anchor Plan Beer E 2083 mm One Fan 41 3 16 Drycool
10. Do not mix products of different manufacturers Table 13 Volume in standard Type L copper piping Diameter in Volume Outside Inside gal ft I m 1 3 8 1 265 0 065 0 81 1 5 8 1 505 0 092 1 15 2 1 8 1 985 0 161 2 00 2 5 8 2 465 0 248 3 08 3 1 8 2 945 0 354 4 40 3 5 8 3 425 0 479 5 95 4 1 8 3 905 0 622 7 73 33 Checklist for Completed Installation 4 0 CHECKLIST FOR COMPLETED INSTALLATION NOTE Q After installation proceed with the following list to verify that the installation is complete Complete and return the Warranty Inspection Check Sheet which is shipped with the unit and return to the address indicated on the check sheet 4 1 Moving and Placing Equipment ___ 1 Unpack and check received material ___ 2 Proper clearance for service access has been maintained around the equipment 3 Equipment is level and mounting fasteners are tight 4 2 Electrical m Line voltage connected and matches equipment nameplate __ 2 Power line circuit breakers or fuses have proper ratings for equipment installed 3 Control wiring connections completed between indoor cooling unit and drycooler 4 Allinternal and external high and low voltage wiring connections are tight 5 Drycooler to pump wiring is completed and checked for proper phase rotation as required __ 6 Monitoring wiring connections completed when equipped to indoor cooling unit or external monitoring panel 7 Confirm that unit is properly
11. FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD 208 230 60 0 75 1 12 4 14 3 20 0 75 3 7 0 7 9 15 3 105 11 4 15 3 140 149 20 3 175 184 25 3 245 254 30 3 31 5 32 4 40 15 3 10 1 11 8 15 3 13 6 15 3 20 3 17 1118 8 25 3 20 6 22 3 25 3 27 6 29 3 35 3 346 363 40 2 0 3 110 129 20 3 145 164 20 3 18 0 19 9 25 3 21 5 23 4 30 3 28 5 30 4 35 3 35 5 37 4 45 30 3 141 168 25 3 17 6 20 3 30 3 21 1 23 8 30 3 24 6 27 3 35 3 31 6 34 3 40 3 38 6 41 3 50 50 3 20 2 24 4 40 3 237 279 40 3 272 31 4 45 3 30 7 34 9 50 3 377 41 9 50 3 44 7 489 60 75 3 27 7 33 8 50 3 31 2 373 60 3 34 7 40 8 60 3 382 443 60 3 452 51 3 70 3 52 2 58 3 80 10 0 3 343 42 0 70 3 37 8 455 70 3 4133 490 70 3 44 8 52 5 80 3 51 8 59 5 90 3 58 8 66 5 90 15 3 49 7 61 3 100 3 53 2 64 8 110 3 56 7 68 3 110 3 60 2 71 8 110 3 67 2 78 8 110 3 74 2 85 8 125 460 60 0 75 3 33 3 7 3 3 3 3 3 15 2 15 6 20 15 13 47 55 3 3 3 3 3 16 6 17 4 20 20 3 51 6 0 3 3 3 3 3 17 0 17 9 20 30 3 6 5 7 7 3 3 3 3 3 18 4 19 6 25 50 3 9 3 11 2 3 3 3 3 3 21 2 23 1 30 75 3 12 7 15 5 3 3 3 3 3 24 6 27 4 35 10 0 3 15 7 19 2 3 3 3 3 3 27 6 31 1 45 15 3 22 7 28 0 3 3 3 3 3 34 6 39 9 60 575 60 0 75 3 27 31 15 3 41 45 15 3 55 59 15 3 69 73 15 3 9 7
12. NEC handbook values for 3 phase motors 26 Installation Table 9 60 Hz Electrical values Liebert Quiet Line drycoolers with integral pump controls of Fans 1 2 3 4 6 8 Model 40 57 60 80 111 121 158 173 178 205 248 347 356 453 498 Pump hp Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD Ph FLA WSA OPD 208 230 3 60 075 3 15 3 6 2 15 3 71 80 15 3 89 98 15 3 10 7 11 6 15 3 143 152 20 3 17 9 18 8 25 15 3 84 101 15 3 102 11 9 15 3 120 137 20 3 13 8 155 20 3 17 4 19 1 25 3 21 0 22 7 25 2 0 3 9 3 11 2 15 3 111 130 20 3 12 9 148 20 3 147 166 20 3 18 3 20 2 25 3 21 9 23 8 30 30 3 12 4 15 1 25 3 142 169 25 3 160 18 7 25 3 17 8 20 5 30 3 21 4 24 1 30 3 250 27 7 35 5 0 3 18 5 22 7 35 3 203 245 40 3 22 1 26 3 40 3 239 281 40 3 275 31 7 45 3 31 1 35 3 50 7 5 3 26 0 32 1 50 3 278 339 50 3 29 6 35 7 50 3 31 4 375 60 3 350 41 1 60 3 38 6 44 7 60 10 0 3 32 6 40 3 70 3 344 421 70 3 36 2 43 9 70 3 380 457 70 8 41 6 49 3 80 3 452 529 80 15 3 48 0 59 6 100 3 49 8 61 4 100 3 51 6 63 2 100 3 53 4 65 0 110 3 57 0 68 6 110 3 160 6 722 110 460 3 60 075 3 2 5
13. before working in the unit Unit contains lethal voltage in some circuits Use voltmeter to make sure power is turned Off before making any electrical connections NOTE Installation and service of this equipment should be done only by properly trained and qualified personnel who have been specially trained in the installation of air conditioning equipment NOTE Use copper wiring only Make sure that all connections are tight 29 Installation Figure 21 Electrical field connections for drycoolers without integral pump controls yy Se lt SS Factory wired to 24V i Class 2 control circuit Factory wired to components Electric service connection Electric service on electric panel to fuse block factory wired connection terminals for field wiring Factory installed disconnect switch Control interlock Field supplied Class 2 wiring to interlock drycooler 24V controls to Liebert room unit 7 8 22 2mm diameter hole f IN l W provided in bottom of Pump fuses amp overload electric box heaters shipped with standard pump packages Electric service connection are to be field installed terminals for power supply to in pump fuse block s pumps when pump controls and starter s are factory supplied 7 8 22 2mm diameter knockouts provided in bottom of Electric service entrance A 7 8 22 2mm diameter hole electric box Three Earth ground connection 60Hz in a 1
14. bottom of electric box are to be field installed in pump fuse block s and Flow switch connection Earth ground bar 50Hz Dual pump controls only Connection terminals with factory Field supplied 24V Class 2 ground from each high voltage wiring from terminals 74 component for field supplied 77 to field mounted flow earth grounding wire Switch f Electric service entrance Electric service Electric service connection Earth ground connection 60 Hz A 7 8 22 2mm diameter hole not by Liebert terminals for power supply to Connection terminal for field in a 1 1 8 28 6mm knockout Field wired to Liebert pumps when pump controls supplied earth grounding wire provided in bottom of electric A ot are factory supplied Dual box Interconnecting wiring pump connection shown 7 8 not by Liebert 22 2mm diameter knockouts provided in bottom Refer to specification sheet for full load amp and wire size amp ratings DPNO000276 of electric box Rev 1 31 Installation 3 10 3 10 1 3 10 2 Filling Instructions Preparing the System for Filling It is important to remove any dirt oil or metal filings that may contaminate the cooling system piping in order to prevent contamination of the fresh glycol solution and fouling of the drycooler piping The system should be flushed thoroughly using a mild cleaning solution or high quality water and then completely drained before charging with glycol Cleaning new systems
15. electrical schematic supplied with the drycooler when making line voltage supply low voltage indoor unit inter lock and any low voltage alarm connections All wiring must be done in accordance with all applicable local state and national electrical codes For electrical characteristics refer to Tables 5 6 7 and 9 Line Voltage Wiring A WARNING Risk of electrical fire and short circuit Can cause property damage injury or death Select and install the electrical supply wire and overcurrent protection device s according to the specifications on the unit nameplate s per the instructions in this manual and according to the applicable national state and local code requirements Use copper conductors only Make sure all electrical connections are tight Unit specific wiring diagrams are provided on each unit Drycooler rated voltage should be verified with available power supply upon receipt of unit but before installation Refer to the unit electrical schematic and serial tag for specific electrical requirements All wiring must be done in accordance with all applicable local state and national electrical codes Line voltage electrical service is required for all drycoolers at the location of the drycooler If the dry cooler contains pump controls the pump package voltage must match the drycooler voltage See the unit s serial tag for specific electrical requirements of the drycooler and any pump package A unit disconnect is standar
16. 10 1 15 3 125 12 9 15 15 3 38 44 15 3 52 58 15 3 66 72 15 3 80 86 15 3 108 11 4 15 3 13 6142 20 20 3 41 48 1513 55 62 1573 69 76 15 3 83 90 15 3 11 1 11 8 15 3 13 9 14 6 20 30 3 53 63 15 3 67 7 7 15 3 81 91 15 3 9 5 105 15 3 12 3 13 3 15 3 15 1 16 1 20 50 3 75 90 15 3 89 104 15 3 10 3 11 8 15 3 11 7 13 2 15 3 14 5 16 0 20 3 17 3 18 8 20 75 3 10 4 12 7 20 3 11 8 14 1 20 3 132 155 20 3 14 6 16 9 25 3 17 4 19 7 25 3 202 22 5 30 10 0 3 12 4 15 2 25 3 138 16 6 25 3 152 18 0 25 3 16 6 19 4 30 3 19 4 22 2 30 3 222 25 0 35 15 3 118 4 22 7 35 3 19 8 24 1 40 3 212 255 40 3 226 269 40 3 25 4 29 7 45 3 28 2 32 5 45 Values are calculated per UL 1995 Pump FLA values used are based on NEC tables for motor horsepower OPD values may be adjusted higher than calculations to compensate for maximum anticipated application temperatures May require electrical component s with higher capacity in the drycooler Consult factory representatives for assistance before ordering Table 8 60Hz pump FLA values Pump Input Power Volts hp 208 230 460 575 3 4 3 5 1 6 1 3 1 4 6 2 1 1 7 1 5 6 6 3 0 24 2 7 5 3 4 2 7 3 10 6 4 8 3 9 5 16 7 7 6 6 1 7 5 24 2 11 0 9 0 10 30 8 14 0 11 0 15 46 2 21 0 17 0 Values based on
17. 36 Table 15 Aquastat settings 2 3 4 fan drycoolers 0 0 ccc eee een ees 36 Table 16 Aquastat settings 6 and 8 fan drycoolers 00 eee 36 if Introduction 1 0 INTRODUCTION 1 1 Product Description and Features The Liebert drycooler is a low profile direct drive propeller fan type air cooled unit Constructed with an aluminum cabinet and a copper tube aluminum fin coil the unit is quiet and corrosion resistant All electrical connections and controls are enclosed in an integral NEMA 3R rated electrical panel sec tion of the drycooler Figure 1 Liebert three fan drycooler 1 2 1 2 1 1 2 2 1 2 3 Fr ar Es Drycooler Control Options Fan Speed DSF DDF Available only on single fan standard drycoolers with integral pump controls Fan speed control pro vides an infinite number of speed variations on specially designed single phase permanent split capacitor motor by monitoring leaving fluid temperature Fan speed control provides air delivery in direct proportion to heat rejection requirements of the sys tem The control is adjustable to maintain the temperature of the fluid leaving the drycooler Either of two temperature ranges can be field selected 30 to 60 F 1 to 16 C for GLYCOOL applications or 70 to 100 F 21 to 38 C for glycol applications Fan Cycling Control D DNT DSO DDO Available on all sizes of standard sound and Quiet Line drycoolers A th
18. 5 F 7 2 C AQ3 F42 70 F 21 1 C 40 F 4 4 C 1 F3 fan available only on drycoolers with three or four fans 2 AQ3 8 F4 applicable only on drycoolers with four fans 3 Dial setting stat open temp set for mid differential 8 F 4 4 C rise to close Source DPN001602 Rev 1 Table 16 Aquastat settings 6 and 8 fan drycoolers Stat Location Factory Setting Optional Setting Aquastat Fan Motors Cabinet Glycol GLYCOOL 6 Fan Drycoolers AQ1 F1 Main 65 F 18 3 C 35 F 1 7 C AQ2 F2 Main 70 F 21 1 C 40 F 4 4 C AQ3 F3 amp F4 Aux 73 F 22 8 C 43 F 6 1 C AQ4 F5 amp F6 Aux 75 F 23 9 C 45 F 7 2 C 8 Fan Drycoolers AQ1 F1 Main 65 F 18 3 C 35 F 1 7 C AQ2 F2 Main 70 F 21 1 C 40 F 4 4 C AQ3 F3 amp F4 Aux 73 F 22 8 C 43 F 6 1 C AQ4 F5 amp F6 Aux 75 F 23 9 C 45 F 7 2 C AQ5 F7 amp F8 Main 78 F 25 6 C 48F 8 9 C Dial setting stat open temp set for mid differential 8 F 4 4 C rise to close Source DPNO001602 Rev 1 36 System Maintenance 6 0 SYSTEM MAINTENANCE 6 1 6 1 1 A WARNING Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies before working in the unit Use voltmeter to make sure power is turned Off before making any electrical connections Unit contains lethal voltage in some circuits Only properly trained and qualified
19. 6 152mm off the ground If the unit must be lifted higher than 6 152mm great care must be exercised and all personnel not involved in moving the unit must be at least 20 6m from the lift point of the unit Figure 12 Forklift position with one fan to eight fan drycoolers Three fan unit shown Positioning for other Liebert drycoolers is the same When using a fork lift to off load or move for installation it is recommended to lift one narrow end off the ground no more than 6 152mm Use the forklift to push or pull the unit When using a crane to lift the unit from a flat bed or to move for installation it is recommended using slings rated for the unit weight Spreader bars are to be used for sling stability and to prevent unit pinching Make sure spreader bars are wider than the unit Slings are to be placed near the ends of the unit under the top deck boards of the skid Figure 13 Lifting drycooler off skid Three fan unit shown Positioning for other Liebert drycoolers is the same 15 Installation 3 3 Unpacking the Drycooler All Sizes To unpack a drycooler with one to eight fans Remove the exterior stretch wrap packaging material from around the unit Remove corner and side foam planks from around the unit Remove the steel bands holding the unit to the skid Set unit legs aside but accessible Remove corrugated panels covering the coil s of the unit OF de eke Figure 14 Removi
20. 6 16 16 16 14 16 14 14 14 14 14 51 75 15 5 22 8 16 16 16 16 16 16 14 14 14 14 14 12 14 14 76 100 23 2 30 4 16 16 16 16 16 16 12 12 12 12 12 12 12 12 101 125 30 8 38 1 16 14 16 16 14 14 12 12 12 10 10 10 10 10 126 150 38 4 45 7 16 14 16 14 14 14 10 12 10 10 10 10 10 10 Drycooler Types Without Pump Controls D DNL D DNT Control Wire Number of Fans Run ft m 1 4 6 amp 8 1 2 3 4 6 8 26 50 7 9 15 2 16 16 16 16 16 16 16 16 51 75 15 5 22 8 16 16 16 16 16 16 16 14 76 100 23 2 30 4 16 16 16 16 16 16 16 12 101 125 30 8 38 1 16 16 16 16 16 16 14 12 126 150 38 4 45 7 16 16 16 16 16 14 14 10 Data based on 16 AWG min wire size 0 4 Amp per contactor 1 to 1 5 Volt maximum drop amp 104 F 40 C average ambient temperature Table 11 Minimum recommended control circuit wire size mm 50Hz models Drycooler Types With Pump Controls DSF DDF DSO DDO Control Wire Number of Fans Run m ft 1 1 1 2 3 4 6 8 1 2 3 4 6 8 7 9 15 2 26 50 1 0 1 0 1 0 1 0 1 0 1 0 25 2 5 2 5 2 5 25 25 25 25 15 5 22 8 51 75 1 0 1 5 1 0 1 5 15 15 40 40 40 40 40 40 40 40 23 2 30 4 76 100 1 0 2 5 1 0 1 5 2 5 2 5 4 0 6 0 4 0 6 0 60 60
21. 6 15 575 3 4 2 4 4 15 208 230 3 14 4 14 9 20 8 453 498 460 3 7 2 7 4 15 575 3 5 6 5 8 15 Values are calculated per UL 1995 OPD values may be adjusted higher than calculations to compensate for maximum anticipated application temperatures 24 Installation Table 6 50Hz electrical values Drycoolers without pump controls of Fans Model Voltage Phase FLA Standard Models 1 4 0 200 230 3 3 5 1 33 69 92 109 112 3 1 7 380 415 3 1 4 200 230 3 7 2 139 174 197 225 380 415 3 3 4 200 230 3 10 5 3 260 310 350 380 415 3 5 1 200 230 3 14 0 4 352 419 466 491 380 415 3 6 8 200 230 3 21 0 6 620 650 700 380 415 3 10 2 200 230 3 28 0 8 790 880 940 380 415 3 13 6 Quiet Line Model 200 230 3 1 8 1 40 57 60 380 415 3 0 9 200 230 3 3 6 2 80 111 121 380 415 3 1 8 200 230 3 5 4 3 158 173 178 380 415 3 2 7 200 230 3 7 2 4 205 248 380 415 3 3 6 200 230 3 10 8 6 347 356 380 415 3 5 4 200 230 3 14 4 8 453 498 380 415 3 7 2 25 Installation Table 7 60Hz Electrical values Standard drycoolers with integral pump controls of Fans 1 2 3 4 6 8 Model 33 69 92 109 112 139 174 197 225 260 310 350 352 419 466 491 620 650 700 790 880 940 Pump hp Ph FLA WSA OPD Ph
22. Drycooler planning dimensional data Three and four fan units 0 0 0 c cee eee 9 Figure 7 Drycooler planning dimensional data Six and eight fan units 20 0 0 cece eee eee 10 Figure 8 Typical drycooler footprint dimensions sees ha 11 Figure9 Piping connection locations for 1 2 3 and 4 fan drycoolers 1 0 0 0 0 0 cece eee eens 11 Figure 10 Piping connections for 6 and 8 fan drycoolers llle ees 11 Figure 11 Equipment recommended for handling a Liebert drycooler 0 0 00 14 Figure 12 Forklift position with one fan to eight fan drycoolers 00 0 cece eee eens 15 Figure 13 Lifting drycooler off skid lorte aa ehh as 15 Figure 14 Removing protective material o oooooooororrrrr ehh 16 Figure 15 Attaching legs to one fan to four fan drycoolers 0 00 eee 17 Figure 16 Securing slings to one fan to four fan drycoolers for lifting off skid 17 Figure 17 Remove skid set drycooler on ground or level surface 0 0 ees 18 Figure 18 Attach legs to six and eight fan drycoolers remove from skid oooooooooo o 19 Figure 19 Rigging six fan or eight fan drycooler for lifting into position llle 19 Figure 20 Typical piping arrangement multiple drycoolers and multiple indoor units 22 Figure 21 Electrical field connections for drycoolers without integral pump controls 4 30 Figure 22 Electrical field connec
23. H Precision Cooling For Business Critical Continuity Liebert Air Cooled Direct Drive Drycoolers User Manual 50 60Hz PTS DATA CENTER SOLUTIONS For More Information SS 866 787 3271 Y Sales PTSdcs com EMERSON Figurei Product model nomenclature Example DDNT350A48 D D N T 350 A 48 Drycooler C No Fan Control P 208 230V 1 ph 60Hz L Main Fan Conirol W 200 220V 1ph 50Hz T Fan Cycling Y 208 230V 3ph 60Hz O Fan Cycling and Pump A 460V 3ph 60Hz Control B 575V 3ph 60Hz S Special Order Fan Pump N 200 230V 3ph 50Hz Control M 380 415V 3ph 50Hz F Fan Speed Conirol Optional Disconnect N No Pump Control Model Size 48 Optional Circuiting Switch on Models with No S Single Pump Control Blank for Standard Pump Control D Dual Pump Control Circuiting Single phase input voltage available only on DSF and DDF drycoolers and will require single phase pumps For single phase voltage on other drycoolers consult factory for SFA DC2022 availability See Tables 3 and 4 for standard and optional circuits available 1 0 1 1 1 2 1 3 2 0 2 1 2 2 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 10 4 0 4 1 4 2 4 3 4 4 5 0 5 1 5 2 TABLE OF CONTENTS INTRODUCTION Pc Product Description and Features ee ene een nes Drycooler Control Options 12 1 Fan Speed DSFE DDE oe ee o 1 2 2 Fan Cycling Control D DNT DSO DDO 1 e 1 2 3 gt
24. Maum Ean Gontrol D DNE Siea A ce RM Ba A bie Od LRQA No Controls D DNGO c eher erem VR DR CI 1 2 5 Pump Controls 2s ata tn RESO o imei Ra PRU Euer iut Typical System Configurations s ririt a E E aa KEEL eee ee eee eens SITE PREPARATION 5 5 acrimonia Qe d De N c clin We ese dl a aa aa Site Consid rations eie eov UE BE RE eet PRX N EE PRS DT Vd Dimensions and Weights cui 4 Xu EE bas ERI A IT s T INSTALLATION 41 20 so ea one ww a m Po ol M e eR OR DR ae each dui RT Equipment Inspection 5 22 A DERE RR IV RUN RON EOL aM ILL Packmg Matertal A t o aah nal t P bun e vc MEG Lor TD E IA Tens Handling Unit on the Skid 1 eee es Unpacking the Drycooler All Sizes 0 llle Preparing a Drycooler for Moving and Installation Units with One to Four Fans 3 4 1 Attaching Legs Removing the Skid and Attaching Slings Units with One to Four HANS fs P Preparing a Drycooler for Moving and Installation Units with Six or Eight Fans 3 5 1 Attaching Legs Removing the Skid and Attaching Slings Units with Six or Eight AIS ces elses Sete dT Tr Mounting the Drycooler i eR Ree ES Be A MRE SEN EROS Glycol Piping Connections 1 lee RR RR n giL Piping Guidelines eR a Re ak ele a ab 3 7 2 Expansion Tanks Fluid Relief Valves Air Management and Other Devices Electrical Supply Preparation 0 0 0 0 ce s 3 8 1 Line Voltage Wing 3 8 2 Low Voltage Control Wiring 20 0 cee s High Volta
25. ON GLYCOL DRYCOOLER Glycol LIEBERT DS UNIT ECON O COIL and associated piping LIQUID EVAPORATOR Aquastat Sensing Bulb Hose Bib 3 Way Chilled Glycol Valve a Shut Off Valve Shut Off Valve Thermistor Pressure Port Check Valves H on Dual Pimp Systems only L J i Air Vents m Pressure Port typical Flow Switch Supplied with Dual Pump Systems x Flow Regulating 1 Valve Li Li URL S RETURN SUPPLY Shut Off Valve x e Shut Off Valve T r Hose d L L Bib l COIL Service Valve WI check Valve COMPRESSOR Service Valve 3 Way Motorized Ball Valve Externa Equalizer From iCOM Control DISCHARGE PARADENSER CONDENSER To iCOM Control Expansion Solenoid Sight Valve Valve Glass Pressure Relief valve s supplied Transducer with 50 Hz EU CE units rated maximum 480 PSIG 33 Bar Filter Drier TO SECOND REFRIGERATION CIRCUIT NOTE TWO REFRIGERATION CIRCUITS PROVIDED SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY FACTORY PIPING Components are not supplied by 22 FIELD PIPING Liebert but are recommended for proper circuit operation and V SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE maintenance Hv Field installed at highest point in Y SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE system on re
26. a by Volume 18 29 36 42 46 50 54 57 Ethylene Glycol x x by Volume 17 26 35 41 46 50 55 59 Based on Dowfrost PG and Dowtherm SR 1 EG product literature Inhibitor levels should be adjusted to properly protect the system if solution concentrations are less than 30 NOTICE Risk of corrosive dilution water Can cause piping system damage coolant fluid leaks and substantial building damage The quality of water used for dilution must be considered because water may contain corrosive elements that reduce the effectiveness of the inhibited formulation Surface water that is classified as soft low in chloride and sulfate ion content less than 100 ppm each should be used 3 10 3 Filling the System Installation of hose bibs at the lowest point of the system is recommended When filling a glycol system keep air to a minimum Air in glycol turns to foam and is difficult and time consuming to remove Anti foam additives are available and may be considered Open all operating systems to the loop With the top vent s open fill the system from the bottom of the loop This will allow the glycol to push the air out of the top of the system minimizing trapped air Fill to approximately 80 of calculated capacity Fill slowly from this point checking fluid levels until full NOTE Q For glycol solution preparation and periodic testing follow manufacturer s recommendations
27. al Flow Switch Supplied with Dual Pump Systems e Flow Regulating Shutoff Valve Valve Liebert DS Unit uL x S and associated piping eturn Supply Optional 4 f Shutoff Valve 3 Way Snuten Valve X xi Sensing Evaporator Peguatng or DN Hose Hh Cylinder Bulb Coil Mib Hose Bib Unloader s i T Compressor External Muffler Service Equalizer t Valve Discharge Valve Paradenser Condenser lt q O Expansion Sight Valve Glass Relief valve s aw supplied with 50Hz Solenoid EU CE units rated To Second Valve Filter maximum 480 PSIG Refrigeration Drier 33 Bar Circuit Factory Piping Components are not supplied by He Field Piping Liebert but are recommended for Optional Factory Piping proper circuit operation and i maintenance V Service Schrader Access Connection No Valve Core Field installed at highest point y Service Schrader Access Connection With Valve Core in the system on the suction side of Note Schematic representation shown This schematic does not imply ae ee fall ri d or define elevations and component location unless specifically noted ae ed E e a ae 2d ie Two refrigeration circuits provided Single refrigeration circuit shown for clarity IA ASS DEDE GOES DPNO000895 Rev 2 Introduction Figure 3 Piping diagram Liebert DS with GLYCOOL with digital scroll compressors EXPANSION TANK Optional Dual Pump System shown LIEBERT HEAT REJECTI
28. alled on a level surface to ensure proper glycol flow venting and drainage For roof installation mount the drycooler on suitable curbs or other supports in accordance with local codes Allow adequate space for pump packages expansion compression tanks piping and additional field supplied devices When mounting pump packages mount on level surface or suitable curbs that will allow cooling ven tilation air to enter from underneath the pump package frame and exit through the louvers 2 2 Dimensions and Weights Table 1 Standard drycooler net weights shipping weights dimensions and volume approximate Domestic Packaging Export Packaging Packaged Dimensions Packaged Dimensions No of Net Weight Weight LxWxH Volume Weight LxWxH Volume Model Fans Ib kg Ib kg in cm ft m3 Ib kg in cm ft m3 D 033 355 161 390 177 475 215 D 069 375 170 410 186 495 225 me 59 x 30 x 55 56 60 x 31 x 56 60 D ges d 395 179 430 195 amp 50x 76x 140 1 6 39692 152x79x 142 1 7 D 109 415 188 450 204 535 243 D 112 435 197 470 213 555 252 D 139 500 227 565 257 765 347 D 174 2 540 245 605 275 97 x 30 x 55 93 805 365 98 x 31 x 56 98 D 197 580 263 645 293 246 x 76 x 140 2 6 845 384 249x79x 142 2 8 D 225 620 281 685 311 885 402 D 260 735 333 825 375 1105 502 SIS 139 x 30 x 55 133 140 x 31 x 56 141 MEQUE 795 861 885 402 353 76x 140 3 8
29. capacity in the drycooler Consult factory representatives for assistance before ordering 3 8 2 Low Voltage Control Wiring NOTICE Risk of control malfunction Can cause improper unit operation Make sure that all low voltage electrical wiring has been performed per the schematic diagram provided and that all low voltage wiring connections are tight A control interlock between the drycooler and the indoor cooling units is required Field supplied cop per wire is required for connection between like numbered Terminals 70 amp 71 on both units for remote On Off control of the drycooler synchronized with the indoor unit Wiring must be sized and selected for insulation class per NEC and other local codes See Tables 10 and 11 for recommended wire sizing for control wiring 24 VAC runs up to 150 ft 45 7m Contact the factory for assistance with longer wiring runs See Figures 21 and 22 and indoor unit manual for location of terminals on drycoolers and indoor units Refer to the electrical schematics supplied with the drycooler and indoor units for proper wiring of Terminals 70 amp 71 27 Installation Table 10 Minimum recommended control circuit wire size AWG 60 Hz models Drycooler Types With Pump Controls DSF DDF DSO DDO Control Wire Number of Fans Number of Fans Run ft m 1 1 1 2 3 4 6 8 1 2 3 4 6 8 26 50 7 9 15 2 16 16 16 1
30. ch pump to prevent back flow through the standby pump s To extend the service life of the drycooler and the system s pumps install filters strainers in the supply line to the pumps These filters should have a 16 20 mesh screen and be a type that can be easily replaced or cleaned Installing hose bibs at the lowest point of the system will facilitate filling Keep piping runs as straight as possible avoid unnecessary bends and minimize additional fittings Allow for pipe expansion from warm fluids Piping should be isolated from the building with vibra tion isolating supports Use soft flexible material to seal between pipes and wall openings to prevent pipe damage Consideration of the minimum glycol temperature to be supplied from the drycooler and the pipe rout ing will determine if the glycol supply and return lines should be insulated Insulation will prevent condensation on the glycol lines in low ambient conditions Completed piping system should provide maximum leak prevention Welded or high temperature sol dered joints should be used where possible Threaded pipe joints if needed can be made with tightly drawn Teflon tape Clean and prepare all pipe connections before joining Be careful not to allow solder joining debris to get inside the lines during the connection process 20 Installation 3 7 2 Expansion Tanks Fluid Relief Valves Air Management and Other Devices An expansion tank must be provided for expa
31. ckages with more DPN000991 pumps may be considered consult supplier Rev 0 22 Installation 3 8 3 8 1 Electrical Supply Preparation Line voltage electrical service is required for all models Refer to equipment nameplate regarding wire size and circuit protection requirements Electrical service must conform to national and local electrical codes Refer to Figures 21 and 22 for electrical service entrances into unit Refer to electri cal schematic when making connections Each unit is shipped from the factory with all internal unit wiring completed A WARNING Risk of electric shock Can cause injury or death Disconnect all local and remote electrical power supplies before working within the electrical enclosure The line side of the disconnect remains energized when the disconnect is Off Use a voltmeter to verify that the electrical power is Off before performing any electrical and or mechanical service and or maintenance operations A WARNING Risk of high speed moving parts Can cause injury or death The fan s blades can start to rotate unexpectedly when the power is On Disconnect all local and remote electrical power supplies before working within the fan compartment Use a voltmeter to verify that the electrical power is Off before performing any electrical and or mechanical service and or maintenance operations Each unit is shipped from the factory with all internal unit wiring completed Refer to the
32. d on drycoolers with internal pump controls and optional on all other drycoolers Site disconnect s may also be required per local code to isolate the drycooler pumps for maintenance Route the supply power to the site disconnect switch and then to the drycooler Route the conduit through the hole provided in the cabinet Connect earth ground to lug provided near terminal board 23 Installation Table 5 60Hz electrical values Drycoolers without pump controls of Fans Model Voltage Phase FLA WSA OPD Standard Models 208 230 1 4 8 6 0 15 1 33 69 92 109 112 2 ad gt 460 3 1 7 2 1 15 575 3 1 4 1 8 15 208 230 3 7 0 7 9 15 2 139 174 197 225 460 3 3 4 3 8 15 575 3 2 8 3 2 15 208 230 3 10 5 11 4 15 3 260 310 350 460 3 5 1 5 5 15 575 3 4 2 4 6 15 208 230 3 14 0 14 9 20 4 352 419 466 491 460 3 6 8 7 2 15 575 3 5 6 6 0 15 208 230 3 21 0 21 9 25 6 620 650 700 460 3 10 2 10 6 15 575 3 8 4 8 8 15 208 230 3 28 0 28 9 35 8 790 880 940 460 3 13 6 14 0 20 575 3 11 2 11 6 15 Quiet Line Models 208 230 3 1 8 2 3 15 1 40 57 60 460 3 0 9 1 1 15 575 3 0 7 0 9 15 208 230 3 3 6 4 1 15 2 80 111 121 460 3 1 8 2 0 15 575 3 1 4 1 6 15 208 230 3 10 5 11 4 15 3 158 173 178 460 3 5 1 5 5 15 575 3 4 2 4 6 15 208 230 3 5 4 5 9 15 4 205 248 460 3 2 7 2 9 15 575 3 2 1 2 3 15 208 230 3 10 8 11 3 15 6 347 356 460 3 5 4 5
33. er 1046 mm zl 9 o See Figure 8 for typical drycooler footprint dimensions 1 A o o o o o oo om e a Two Fan 41 3 16 Drycooler peana Site Preparation Figure 6 Drycooler planning dimensional data Three and four fan units 43 9 16 131 1 2 3340mm 457mm 124 3150mm 43 3 16 1 Ne a Note Overall height to the top of fan guard 43 1 8 1095mm 122 Eyebolts for Lifting 43 3 16 1097mm 43 9 16 1106mm 1714 27 called 70 Y 1778mm 37 7 8 962mm 457mm 164 4166mm Emerson recommends a clearance of 36 915mm on each side for proper operation and component access e Anchor Plan 3099mm Anchor Plan 82 41 3 16 1046mm See Figure 8 for typical drycooler footprint dimensions 80 2083 mm Electric Box End 2032mm 41 3 16 Four Fan Drycooler 1046 mm Site Preparation Figure 7 Drycooler planning dimensional data Six and eight fan units 131 1 2 86 3 4 2203mm 124 3150mm Overalll height to the top of the fan guard is 43 1 8 1095mm Anchor Plan 122 jm E s 87 1 8 2213mm 18 457mm 3099mm Six Fan Drycooler See Figure 8 for typical drycooler footprint dimensions Anchor Plan 82 i 2083mm Electric Box End 171 1 2
34. ermostatic control cycles the fan on a single fan drycooler in response to leaving fluid temperatures Two or more thermostats are employed on drycoolers with two or more fans to cycle fans or groups of fans in response to leaving fluid temperatures The thermostat setpoints are listed on the factory supplied schematic They typi cally range from 35 to 45 F 2 to 7 C for GLYCOOL applications and 65 to 75 F 18 to 24 C for glycol applications Main Fan Control D DNL Available for drycoolers without pump controls All fans run when an external contact closure com pletes internal 24VAC circuit Introduction 1 2 4 1 2 5 1 3 No Controls D DNC Available on all drycoolers without pump controls All fans are activated at full speed when power is applied to the drycooler Pump Controls Available on all Fan Speed and Fan Cycling Control drycoolers Controls for pump s up to 7 5hp are built into the same integral electric panel as the drycooler fan controls Pump fuses overload heaters and flow switch dual pump control models are included with the Liebert pump packages or must be field supplied for field supplied pumps Dual pump option Provides controls for primary and standby pump The flow switch senses loss of flow and switches to the standby pump for continuous system operation in the event of a pump fail ure An internal switch allows manual selection of the lead lag pump Typical System Configurations The
35. essure drops and performance 2 Flow measuring devices drain and balancing valves to be supplied by others and located as required 3 See product literature for installation guidelines and clearance dimensions 4 Drawing shows dual pump package Alternate pump packages with more DPN000991 pumps may be considered consult supplier Rev 0 Site Preparation 2 0 SITE PREPARATION 2 4 Site Considerations The drycoolers and pumps should be installed in a location offering maximum security and access for maintenance Avoid ground level sites with public access and areas that contribute to heavy snow or ice accumula tions Utilize Piggyback drycoolers whenever interior building locations must be used To ensure ade quate air supply Emerson recommends that the drycoolers be located in an area with clean air away from loose dirt and foreign matter that may clog the coil In addition drycoolers should not be located near steam hot air or fume exhausts Drycoolers must not be installed in a pit where discharge air is likely to be recirculated through the drycooler or installed where objects restrict the air inlet free area Also the drycoolers should be located no closer than 3 feet 1m from a wall obstruction or adja cent unit see Figures 5 6 or 7 The drycooler must be inst
36. ety information and take necessary steps to ensure safety of use NOTICE Risk of mishandled glycol products Can cause environmental damage When mishandled glycol products pose a threat to the environment Before using any glycol products review the latest Material Safety Data Sheets and ensure that you can use the product safely Glycol manufacturers request that the customer read understand and comply with the information on the product packaging and in the current Material Safety Data Sheets Make this information available to anyone responsible for operation maintenance and repair of the drycooler and related equipment No chemical should be used as or in a food drug medical device or cosmetic or in a product or pro cess in which it may contact a food drug medical device or cosmetic until the user has determined the suitability and legality of the use Since government regulations and use conditions are subject to change it is the user s responsibility to determine that this information is appropriate and suitable under current applicable laws and regulations NOTICE Risk of using the wrong type of glycol Can cause piping damage coolant fluid leaks and substantial building damage Automotive antifreeze is unacceptable and must NOT be used Typical inhibited formula ethylene glycol and propylene glycol manufacturers and suppliers are Union Carbide Ucartherm and Dow Chemical Dowtherm SR 1 Dowfrost These glycols are su
37. ge Electrical Connections 0 0 0 s Filling Instructions miii kPa eee taa ld PR 3 10 1 Preparing the System for Filling 20 0 0c ees 3 10 2 Glycol Solutions eo rcd ee Ba ee A abe ie ete Eb teet 3 10 89 Falling the System Jc oves cob S EEG E Eu eoe bela Bees CHECKLIST FOR COMPLETED INSTALLATION lessen Moving and Placing Equipment Electrical ds tee arp we s OUT SES ute t SUE SRN EP ues he OPERATION Cp ETE Startup Checklist lel tee AB RS UE PLES RE I ead Aba Boe hae Aes e ndn Pb e e O e Bel O A O E O A o EI M 5 2 1 Drycooler Aquastat Setpoints 0 0 cc s 6 0 SYSTEM MAINTENANCE 002 cece eee eee ee ee eee eee 37 6 1 General Procedures tse 1e aao Sh De Re REL A TR a Lag v xs u dios 37 6 1 1 Drycooler Coil Cleaning 37 6 1 2 Maintenance Inspection Checklist 39 7 0 TROUBLESHOOTING cui dk Er swine A tone nie bU EE dod acia e bene 40 FIGURES Figurei Product model nomenclature 0 0 ccc ee eens Inside Front Cover Figure 1 Liebert three fan drycooler 0 0 0 ee haa 1 Figure2 Piping diagram Liebert DS glycol semi hermetic compressor models 00 0000 eee 3 Figure3 Piping diagram Liebert DS with GLYCOOL with digital scroll compressors 4 Figure 4 Typical piping arrangement multiple drycoolers and multiple indoor units 5 Figure 5 Drycooler planning dimensional data One and two fan units 0 0 0 0c cee es 8 Figure 6
38. grounded to an earth ground 8 Control transformer setting matches incoming power 9 Electrical service conforms to national and local codes ___ 10 Check fans for proper phase rotation Blades should rotate clockwise when viewing the unit from the fan guard side 4 3 Piping 1 Piping is properly sized for energy efficiency __ 2 Piping is completed to corresponding indoor cooling unit glycol condenser circuit 83 Piping is routed to reduce potential of rub through or chaffing 4 Piping leak checked evacuated and charged with appropriate glycol water mixture 5 Piping is insulated if required to prevent damage caused by condensation 4 4 Other 1 Fans rotate freely and in proper direction 2 Adjust aquastat setpoints to match setpoints on the electrical schematic supplied with the drycooler to match indoor unit coil and fluid regulating valve types and number of drycoolers on loop 3 Foreign material removed from in and around all equipment installed construction materials construction debris etc 4 Installation materials and tools have been removed from in and around all equipment literature shipping materials tools etc 5 Blank startup sheet located ready for completion by installer or startup technician 34 Operation 5 0 OPERATION A Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies before working within Unit contain
39. gs in good condition 5 No glycol leaks Pump Package 1 Pump rotation 2 Pump securely mounted 3 No glycol leaks 4 No abnormal noises Glycol Piping and System Items 1 Check piping for proper vibration 1solation __ 2 Remove and clean glycol strainer 3 Check for positive fluid pressure at system high point 4 Check glycol level and for air to be vented ___ 5 Check for clogged expansion tank ___ 6 Check for proper concentration of glycol and inhibitors 1 Complete all monthly items 2 Piping in good condition 3 Piping secure 4 Wash coil as needed Pump Package ___1 Complete all monthly items __ 2 Test changeover operation 3 Pump 1 amp draw Pump 2 amp draw Pump 3 amp draw __ 4 Check all electrical connections 5 Check contactors for pitting Glycol Piping and System Items __ 1 Complete all monthly items 2 Glycol freeze point F C and pH 3 Glycol inhibitor concentration and general condition Drycooler Electric Panel 1 Check all electrical connections __ 2 Check contactors for pitting 3 Operational sequence setpoints Fan Motors __ 1 Motor 1 amp draw amps 2 Motor 2 amp draw _ amps __ 3 Motor 3 amp draw amps ___ 4 Motor 4 amp draw _ amps 5 Motor 5 amp draw amps __ 6 Motor 6 amp draw amps 7 Motor 7 amp draw amps 8 Motor 8 amp draw amps Notes Signature Make photocopies of th
40. he skid Make sure spreader bars wider than the unit Figure 16 Securing slings to one fan to four fan drycoolers for lifting off skid Put slings on four fan drycoolers against the outside of the eyebolts Put slings on one fan two fan and three fan drycoolers against the legs 17 Installation 3 Lift the unit 24 610mm off the top deck of the skid Remove the skid from under the unit Turn the drycooler so that its legs point down toward the ground A mechanized method is preferred for this step but if one is not available use a minimum of four properly protected people to lift turn and place the unit upright so that its legs are on the ground Figure 17 Remove skid set drycooler on ground or level surface 3 5 Turn drycooler so e P legs point down Pull skid from under drycooler 4 Setthe upright unit on the ground so the legs support unit weight 5 Change strap locations for final lifting and installation One two and three fan units route the straps through the large holes on the side of the legs Spreader bars are still required Make sure spreader bars are wider than the unit Four fan units use the eye bolts on top of the unit to secure straps or chains The unit is now ready to be lifted and moved to its installation location Preparing a Drycooler for Moving and Installation Units with Six or Eight Fans The following procedure is one recommended process for removing a Liebe
41. high points repeat as necessary Check liquid level in surge tank Pump suddenly stops pumping Clogged strainer or impeller Clean out debris Pumping suddenly slows Clogged impeller diffuser or line Clean out debris and use strainer Excessive leakage around the pump shaft while operating Worn seal or packing Replace seal or packing Pump performance poor Worn impeller or seal Replace with new impeller or seal Suction lift too high Relocate pump closer to supply Motor not up to speed low voltage Larger lead wires may be required Check for proper line voltage 10 Worn bearings Replace pump Pump has noisy operation Worn motor bearings Replace pump Low discharge head Throttle discharge improve conditions Debris lodged in impeller Remove cover and clean out Cavitating pumps Adjust system pressures Pump discharge pressure too high Throttling valve improperly set Reset valve to proper differential pressure Valve closed in circuit Open all valves downstream of unit Strainer clogged or dirty Remove strainer plug and clean Pump will not operate or no coolant flow No power to pump motor See Unit will not operate in this table Low coolant level Check coolant level Tubes plugged in cooling coil Flush coil with reputable cleaner Valve closed downstream of cooling unit Open all valves
42. ion Figure 20 Typical piping arrangement multiple drycoolers and multiple indoor units Expansion rg Gal HP GPM l s ft NI fa Ces kW PerPumpO kPa Total r gt D 4 PUMP PACKAGE lac DNI M Pipe Cooling Unit Diam In mm Model AP Ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa Drycooler No 1 Model GPM l s AP ft kPa Drycooler No 2 Model GPM l s GPM Vs X AP X ft kPa AP ft kPa Cooling Unit LEGEND Model DK Gate Valve Cooling Unit GPM l s N Model AP ft kPa IN Check Valve GPM l s Butterfly Valve AP ft kPa Cooling Unit Model Ip Relief Valve Cooling Unit GPM l s Il Union Model AP ft kPa GPM l s Ball or Flow Control Valve AP ft kPa Cooling Unit Flow Switch HE l AP Pressure Drop us AP ft kPa J Strainer Filter Notes 1 Pressure and temperature gauges or ports for same are recommended to monitor component pressure drops and performance 2 Flow measuring devices drain and balancing valves to be supplied by others and located as required 3 See product literature for installation guidelines and clearance dimensions 4 Drawing shows dual pump package Alternate pump pa
43. is form for your records 39 Troubleshooting 7 0 TROUBLESHOOTING Symptom Unit will not operate Possible Cause No main power Check Or Remedy Check L1 L2 and L3 for rated voltage Disconnect switch open Close disconnect switch Blown fuse or circuit Check fuses or circuit breaker breaker tripped Control fuse or circuit Check for 24VAC If no voltage check for short Replace fuse or breaker tripped reset circuit breaker Improperly wired Check wiring diagram No output voltage from transformer Check for 24VAC If no voltage check primary voltage Unit runs but motor protector keeps tripping Motor protector defective Replace protector Motor protector too small Check amp draw Fan or pump motor has shorted winding Repair motor Low or unbalanced voltage Determine reason and correct Outlet temperature from unit too high Low or no coolant flow See Pump will not operate or no coolant flow entry in this table Ambient air temperature higher than design Correct possible hot air discharge to fans from another source Heat load higher than design Check for misapplication need larger cooler Correct possible additional heat load being added to cooling circuit Throttling valve improperly Reset valve to proper differential pressure Liquid squirts from surge tank fill cap when pump is turned off Air in system Vent all
44. is just as important as clean ing old ones New systems can be coated with oil or a protective film dirt and scale are also common Any residual contaminants could adversely affect the heat transfer stability and performance of your system In many cases in both old and new systems special cleaners are needed to remove scale rust and hydrocarbon foulants from pipes manifolds and passages Clean heat transfer surfaces are important in maintaining the integrity of the heating cooling system For more information on clean ers and degreasers contact your sales representative Follow the manufacturer s instructions when using these products Calculate the internal volume of the system as closely as possible The drycooler volumes are shown in Tables 3 and 4 Use Table 13 for field installed piping volumes Indoor unit volumes are found in their user manuals Glycol Solutions NOTE Glycol solutions should be considered for the protection of the coil When glycol solutions are not used damage can occur either from freezing or from corrosion from water When considering the use of any glycol products in a particular application you should review the lat est Material Safety Data Sheets and ensure that the use you intend can be accomplished safely For Material Safety Data Sheets and other product safety information contact the supplier nearest you Before handling any other products mentioned in the text you should obtain available product saf
45. ng protective material Three fan unit shown Methods for other Liebert drycoolers are the same Steel bands imm ME N Three fan unit shown for illustration J ates Methods for other sizes of drycoolers elle fasteners in bag attached to legs are the same 16 Installation 3 4 Preparing a Drycooler for Moving and Installation Units with One to Four Fans The following procedure is one recommended method for removing a Liebert drycooler from its ship ping skid Other methods may be used provided that they are safe for personnel the drycooler and equipment 3 4 4 Attaching Legs Removing the Skid and Attaching Slings Units with One to Four Fans 1 Attach legs to the unit at indicated locations Use the fasteners provided with the legs Recommended tools for attachment is a 5 8 socket and ratchet More legs may be required for installation than shown below Refer to the anchor plan corre sponding to your unit in Figure 5 or 6 Figure 15 Attaching legs to one fan to four fan drycoolers Attach legs as shown in this close up view 2 Place slings around the unit One two and three fan units place slings against the inside of the attached legs Four fan units place slings against the outside of the attached eye bolts Slings are to be placed between the unit and the top deck boards of the skid Use spreader bars lift beam and crane to lift the unit off t
46. nsion and contraction of the fluid due to temperature change in this closed system Vents are required at system high points to vent trapped air when fill ing the system A fluid pressure relief valve is also a necessary piping component All systems must have an air management system to ensure proper component operation and system performance There are several methods that can be used to manage the air within a closed loop hydronic system Depending on the method chosen the system may include one or more of the follow ing ancillary components tank steel expansion compression diaphragm or bladder air separator and air vent Consult your local engineer to determine which method will be used and where these components must be installed Depending on the complexity of the system various other devices may be specified refer to site spe cific drawings Some of the devices that may be required are pressure gauges flow switches auto matic air separator tempering valves standby pumps and sensors for electrical controls NOTICE Risk of frozen coolant fluid Can cause piping rupture coolant fluid leaks and building damage Immediately following the use of water for leak testing or system cleaning charge the tested system with the proper percentage of glycol and water for your coldest design ambient Complete system drain down cannot be ensured and damage to the system could result from freezing of residual water 21 Installat
47. ore working on the unit The fan guards and fan blades must be removed to gain access to the coil surface The sprayer can then be worked across the coil using the water clean ing solution pushing the dirt and debris out the bottom of the coil Although this does extend the time involved the results are well worth it This method should be used at least once a year Spraying the coil from the outside repeatedly can push a majority of the dirt to the inner section of the fins and con tinue to restrict air flow Keep in mind you may not have the luxury of shutting the unit s down for an extended time A pre scheduled shutdown with the operator may be in order If you are using a cleaner along with the spraying process follow recommended manufacturer instructions and be sure to rinse the coil thoroughly Any residue left on the coil can act as a magnet to dirt Reinstall and secure the fan blades and fan guards after the cleaning is finished Last reconnect the power supply to the drycooler 38 System Maintenance 6 1 2 Maintenance Inspection Checklist Date Prepared By Model Serial Number NOTE Regular inspections are necessary to assure proper cleanliness of the cooling fins Should inspection reveal dirt or corrosion appropriate cleaning should be performed Monthly Semiannually Drycooler Drycooler 1 Coil surfaces free of debris __ 2 Fans free of debris 3 Fan motors securely mounted 4 Motor bearin
48. p plied with corrosion inhibitors and do not contain a silicone anti leak formula Commercial ethylene glycol and propylene glycol when pure are generally less corrosive to the common metals of construc tion than water itself Aqueous solutions of these glycols however assume the corrosivity of the water from which they are prepared and may become increasingly corrosive with use when not prop erly inhibited There are two basic types of additives Corrosion inhibitors and Environmental stabilizers 32 Installation The corrosion inhibitors function by forming a surface barrier that protects the metals from attack Environmental stabilizers while not corrosion inhibitors in the strictest sense of the word decrease corrosion by stabilizing or favorably altering the overall environment An alkaline buffer such as borax is a simple example of an environmental stabilizer since its prime purpose is to maintain an alkaline condition pH above 7 The percentage of glycol to water must be determined by using the lowest design outdoor temperature in which the system is operating Table 12 indicates the solution volume of inhibited glycol required to provide freeze protection at various ambient temperatures Table 12 Glycol concentrations for freeze protection by ambient temperatures Temperature F C Coolant Type 20 7 10 12 O 18 10 23 20 29 30 34 40 40 50 46 Propylene Glycol a
49. packaging from or preparing unit for installation A CAUTION Risk of sharp edges splinters and exposed fasteners Can cause personal injury Only properly trained and qualified personnel wearing appropriate safety headgear gloves shoes and glasses should attempt to move lift remove packaging from or prepare unit for installation NOTICE Risk of overhead interference Can cause unit and or structure damage Refer to the installation plans prior to moving the unit to verify clearances NOTICE Risk of improper forklift handling Can cause unit damage Keep tines of the forklift level and at a height suitable to fit under the skid NOTICE Risk of improper storage Can cause unit damage Keep unit upright and protected from contact damage Figure 11 Equipment recommended for handling a Liebert drycooler Installation 3 2 Handling Unit on the Skid Transport the unit using a forklift or a crane with sling and spreader bars If using a forklift make sure the forks if adjustable are spread to the widest allowable distance to still fit under the skid Type of forklift used will depend on the terrain the unit is to be moved across during handling Minimum forklift fork length for one fan and two fan units 48 1219mm for three fan and four fan units 72 1829mm for six fan units 72 1829mm for 8 fan units 96 2438mm When moving the packaged unit do not lift the unit any higher than
50. personnel may perform repair maintenance and cleaning operations The fans may start unexpectedly Disconnect power supply before working on unit Line side of factory disconnect remains energized when disconnect is off Use a voltmeter to make sure power is turned off before checking any electrical connections or functions General Procedures NOTE When ordering replacement parts for equipment it is necessary to specify unit model number serial number and voltage Please record those numbers in the spaces below Model Number Serial Number Voltage Phase Frequency Periodic attention is necessary for continued satisfactory operation of your unit Restricted air flow through the drycooler coil reduced airflow from non functioning fans and low coolant levels will reduce the operating efficiency of the unit and can result in high fluid temperatures and loss of cool ing In winter do not permit snow to accumulate around the sides or underneath the drycooler Monthly and semi annual inspections and maintenance are recommended for proper system opera tion Use copies of 6 1 2 Maintenance Inspection Checklist for each of these inspections If performance or operation problems are detected at anytime refer to 7 0 Troubleshooting for required action Drycooler Coil Cleaning Keeping the outdoor drycooler coils clean is an important factor in maintaining peak efficiency reli ability and long life of the equipment I
51. pment damage To avoid the possibility of burst pipes the system installer must supply and install a relief valve in the system Galvanized pipe must not be used in glycol systems To help prevent piping failures supply and return lines must be supported such that their weight does not bear on the piping of the unit or pumps Piping Guidelines Piping between the drycooler the pump and the indoor unit is required to complete the system and is to be provided and installed by the system installer All fluid piping must comply with local codes Properly sized pipes will help reduce pumping power and operating costs Pipe material choices are typically copper plastic or steel black iron Consult glycol and pipe manu facturing literature for compatibility and sizing assistance Galvanized piping should not be used Any copper piping installed should be L or K refrigerant grade copper See Figure 20 for a typical piping diagram depicting multiple indoor units multiple drycoolers and dual pumps Single indoor unit pump drycooler systems are also possible Drycooler supply and return connections vary in size and number Refer to Tables 3 and 4 Emerson recommends installing manual service shutoff valves at the supply and return connections of each drycooler and indoor cooling unit The shutoff valves permit isolating equipment for routine mainte nance and for repairs Multiple pump packages require a check valve at the discharge of ea
52. rt drycooler from its ship ping skid Other methods may be used provided that the methods are safe for personnel the dry cooler and equipment 3 5 4 Attaching Legs Removing the Skid and Attaching Slings Units with Six or Eight Fans 1 Attach upper most legs to the unit at indicated locations Use four 4 fasteners per leg Fasteners are provided with the legs Recommended tools for attachment is a 5 8 socket and ratchet More legs may be required for installation than shown below Refer to the anchor plan corre sponding to your unit s number of fans in Figure 7 2 Attach slings or chains to the top side of the unit lift rails Mechanically lower the unit in order to rest on the attached legs Make sure not to damage the opposite side of the unit 3 Move the slings or chains to the lift rail side resting on the skid Mechanically lift the unit to a point where the side being lifted is just high enough to allow for safe attachment of the remaining unit legs Move the skid out the way and attach remaining legs 4 Setthe upright unit on the ground so that its legs support the unit s weight 5 Reposition add straps and spreader bars to prepare the unit for lifting and positioning into its installation location 6 Usethe support channels located under the unit to attach straps or chains Spreader bars are still required Make sure spreader bars are wider than the unit The unit is ready to be lifted and moved to its installa
53. s potentially lethal electrical voltage Only properly trained and qualified personnel may perform repair maintenance and cleaning operations The fans may start unexpectedly Disconnect power supply before working on unit Line side of factory disconnect remains energized when disconnect is off Use a voltmeter to make sure power is turned off before checking any electrical connections or functions 5 1 Startup Checklist Refer to 4 0 Checklist for Completed Installation and verify that all installation items have been completed prior to proceeding Turn the drycooler disconnect ON Indoor units should then be turned on and set for cooling to allow operation of drycooler fan and pump controls Check the fans for proper rotation air discharging up Check the pumps for proper rotation Risk of overheated pump seals Can cause piping system damage coolant fluid leaks and substantial building damage Do not run pumps without fluid in the system Pump seals require fluid to keep them cool running them without fluid for any amount of time will damage the seals which may cause a failure 5 2 Startup 5 2 1 Drycooler Aquastat Setpoints The fan off temperature of the aquastats fluid temperature controls should be set according to fac tory supplied schematic shipped inside the drycooler s electric panel Settings might need to be field adjusted based on the indoor unit s glycol regulating valve type drycooler size and the number of dry coolers on
54. standard glycol cooled precision air conditioning system includes these major components indoor air conditioning unit with heat exchangers refrigerant glycol glycol regulating valve outdoor air cooled drycooler glycol pump s expansion compression tank pump controls interconnection piping unit interlock control wiring Figures 2 and 3 show a single unit to drycooler loop arrangement Figure 4 shows a typical configu ration of multiple indoor units and multiple outdoor drycoolers using a dual pump package and on a common piping loop Additional field supplied components such as valves expansion tank strainers and flow or pressure switches are also shown in Figures 2 3 and 4 These components are necessary and should be included when designing a system with one indoor and one outdoor unit on a piping loop or a system using multiple indoor and outdoor units on a common piping loop Larger systems may also benefit from an air separator not shown See 3 0 Installation for further details on required components Introduction Figure 2 Piping diagram Liebert DS glycol semi hermetic compressor models Optional Dual Pump System Shown Liebert Expansion Heat Rejection Tank Glycol Pumps Check Valves Drycooler Pressure on Dual Pump Glycol Aquastat Port HC HC aC Systems only G Sensing ate Valves Bulb LIII Hose I Ai E Bib Shutoff Valve Air Vents Pressure Port t H kkk typic
55. t is much easier to keep up on frequent cleanings rather than wait until heavy build up has occurred which may create head pressure problems with the evaporator units When to Clean Normal conditions typically dictate cleaning twice a year spring and fall On site or area conditions such as cottonwood trees construction ground level drycooler placement etc can increase cleaning frequency On your standard monthly preventive maintenance schedule a visual inspection of the coil is recommended to monitor conditions What to Use The best overall drycooler coil cleaner to use is plain water If the coil has been maintained and cleaned at regular intervals water is sufficient to remove dirt and debris from the fins Heavy build up on the exterior of the fins can be removed with a brush Water pressure from a garden hose and sprayer usually works well If a pressure washer is used make sure the equipment is set to a lower pressure setting and that the nozzle is set to the fan spray not stream Otherwise damage to the fins could result If a cleaner is required we recommend a non acidic type cleaner be used Acid type cleaners can be aggressive to the coil fins as well as surrounding areas Many sites do not allow the use of acidic cleaners for environmental reasons 37 System Maintenance How to Clean The absolute best way to clean coils is from the inside out This requires disconnecting the power sup ply from the drycooler bef
56. the loop Typical settings shown in Tables 14 15 and 16 apply to standard drycoolers without customer requested modifications to number of aquastats Applications with Optional Stat Setting require field piping to be insulated to prevent condensa tion Aquastats must be field adjusted to optional setting for GLYCOOL Dual Cool applications Single Drycooler loops with motorized ball valve flow controls Motorized ball valve flow controls are used on all Liebert CRV units and all Liebert DS Lie bert Challenger and Liebert Challenger ITR units with digital compressors see below for unit model numbers containing digital compressors Der Vox Models with 7th characters D or G DS VSxxxxG Liebert DS Liebert Challenger and BU BF BRxxxxD Liebert Challenger ITR 35 Operation Table 14 Water glycol system conditions requiring optional settings for aquastats Cooling Glycol GLYCOOL Flow Control Motorized Ball Valve Water Regulating Valve Motorized Ball Valve Water Regulating Valve Drycoolers In Loop 1 Multiple 1 Multiple 1 Multiple 1 Multiple Aquastat Settings Optional Factory Factory Factory Optional Optional Optional Optional Insulate Field Piping Yes No No No Yes Yes Yes Yes Table 15 Aquastat settings 2 3 amp 4 fan drycoolers Aquastat Fan Motors Factory Setting Optional Setting AQ1 F1 65 F 18 3 C 35 F 1 7 C AQ2 F2 amp F3 75 F 23 9 C 4
57. tion location 18 Installation Figure 18 Attach legs to six and eight fan drycoolers remove from skid Attach legs to higher side of drycooler Move higher side of drycooler to the A xl Y floor e t I Straps attached using support channels AG T e pr Pull skid from under pet supported side of drycooler Spreader bars keep straps from pressing on sides of drycooler Straps attached using support channels 19 Installation 3 6 3 7 3 7 1 Mounting the Drycooler The drycooler must be installed so that it is level within 1 2 18mm to ensure proper glycol flow venting and drainage For roof installation mount the drycooler on suitable curbs or other supports follow all local and national codes Secure the legs to the mounting surface using a field supplied 1 2 13mm diameter bolt in each of the two 9 16 14mm holes in each leg See Figures 5 6 and 7 for anchor dimensions Glycol Piping Connections A CAUTION Risk of explosive discharge of high pressure gas and flying projectiles Can cause building and or piping damage and personal injury Units are shipped from the factory with a pressurized dry nitrogen holding charge Carefully relieve the pressure before cutting into the piping system NOTICE Risk of excessive coolant fluid pressure improper piping material and unsupported piping Can cause piping rupture coolant fluid leaks and building and or equi
58. tions for drycoolers with integral pump controls 31 TABLES Table 1 Standard drycooler net weights shipping weights dimensions and volume approximate 6 Table 2 Liebert Quiet Line drycooler net weights shipping weights dimensions and volume approximalbez oet t OR e rt er ERN E dut les e Meer s rete i leg eee ds 7 Table 3 Standard drycooler piping connection sizes and internal volume 00 0c eee eee 12 Table 4 Liebert Quiet Line drycooler piping connection sizes and internal volume 13 Table 5 60Hz electrical values Drycoolers without pump controlS ooooooooo o 24 Table 6 50Hz electrical values Drycoolers without pump controls 0000 cc eee ees 25 Table 7 60Hz Electrical values Standard drycoolers with integral pump controls 26 Table 8 60Hz pump ELA values pte a ed ba Se He ee ele Ol ge oat RR ae a be M 26 Table 9 60 Hz Electrical values Liebert Quiet Line drycoolers with integral pump controls 27 Table 10 Minimum recommended control circuit wire size AWG 60 Hz models 28 Table 11 Minimum recommended control circuit wire size mm 50Hz models 28 Table 12 Glycol concentrations for freeze protection by ambient temperatures llle 33 Table 13 Volume in standard Type L copper pp 33 Table 14 Water glycol system conditions requiring optional settings for aquastats
59. turn line to pumps Locate at tops of all risers and any intermediate system high points NOTE SCHEMATIC REPRESENTATION SHOWN THIS SCHEMATIC DOES NOT IMPLY OR DEFINE ELEVATIONS AND COMPONENT LOCATION UNLESS SPECIFICALLY NOTED DPN001432 Rev 0 Introduction Figure 4 Typical piping arrangement multiple drycoolers and multiple indoor units Expansion D Gal HP GPM l s ft pl CHINE kW Per Pump kPa Total r gt D PUMP PACKAGE k TGE NN Pipe Cooling Unit Diam In mm Model AP Ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa GPM l s AP ft kPa Cooling Unit Model Cooling Unit GPM l s Model AP ft kPa Drycooler No 1 Model GPM l s AP ft kPa Drycooler No 2 Model GPM l s GPM l s AP ft kPa AP ft kPa Cooling Unit LEGEND Model DX Gate Valve Cooling Unit GPM l s N Model AP ft kPa IN Check Valve GPM l s Butterfly Valve AP ft kPa Cooling Unit Model ip Relief Valve Cooling Unit GPM l s Il Union Model AP ft kPa GPM l s Ball or Flow Control Valve AP ft kPa Cooling Unit Flow Switch HE l AP Pressure Drop us AP ft kPa J Strainer Filter Notes 1 Pressure and temperature gauges or ports for same are recommended to monitor component pr
60. ty and capacity Enterprises benefit from greater IT system availability operational flexibility and reduced capital equipment and operating costs While every precaution has been taken to ensure the accuracy Fax 39 049 5841 257 and completeness of this literature Liebert Corporation assumes no Asia responsibility and disclaims all liability for damages resulting from use of JA this information or for any errors or omissions 29 F The Orient Square Building 2008 Liebert Corporation F Ortigas Jr Road Ortigas Center All rights reserved throughout the world Specifications subject to change Pasig City 1605 without notice Philippines Liebert is a registered trademark of Liebert Corporation 6326 ue 5 All names referred to are trademarks 8 or registered trademarks of their respective owners Fax 63 2 7309572 SL 10080 REVO 06 10 Emerson Network Power The global leader in enabling Business Critical Continuity EmersonNetworkPower com HI AC Power 3 Embedded Computing I3 Outside Plant E Racks amp Integrated Cabinets I3 Connectivity E Embedded Power E Power Switching amp Controls E Services E DC Power HA Infrastructure Management amp Monitoring M Precision Cooling I3 Surge Protection Emerson Business Critical Continuity Emerson Network Power and the Emerson Network Power logo are trademarks of Emerson Electric Co or one ofits affiliated companies 2008 Emerson Electric Co
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