recold jt series cooling tower free datasheet http://www.ndatasheet.com
recold jt series cooling tower construction 2 recold, the pioneer of dri-fan forced draft evaporative coolers, now applies this principal to the cooling of process water. with the fan in the supply air stream, away from the high humidity air leaving the tower, the fan shaft and bearing are assured longer life. system the process water enters the spray tree at the top of the unit, is sprayed down onto the heat exchanger surface or fill, giving up heat to the counterflowing air before returning to the system from the sump pan. moist air does not enter the fan assembly, resulting in longer life and fewer service problems. hydrospray noles hydrospray nozzles are made of non-ferrous material, sized and spaced for optimum wetting of fill. the even distribution of spray across the fill material is extremely important in evaporative equipment. accessibility recold cooling towers are designed for maximum accessibility for inspection and cleaning. recold patented access doors on both sides of the unit provide ample access to the spray nozzles, fill, eliminators, bleeds and sump pan for service and maintenance. recold access doors provide a complete air and water tight seal without gaskets or fasteners, and are quick opening. construction recold cooling towers are constructed of 300 series stainless steel (basin, fill supports and access doors) and heavy gauge hot dipped g-235 galvanized steel per astm a-525. blowers a single, slow-speed forward curve blower is used for optimum efficiency and minimum noise. each blower is balanced to eliminate unit vibration on recolds high precision electronic balancing equipment. large blowers are made from galvanized steel and subject to careful quality control throughout. fan shafts are coated to prevent corrosion. the blower drives are selected at 150% of rated brake horsepower. bearings are self-aligning, ball-bearing type, with external lubricating fittings and selected for 2000,000 hour average bearing life. rugged, osha approved, belt guard and screen are provided for protection. motor is mounted on an adjustable base. integrated assembly recold cooling towers are completely assembled at the factory and shipped as a unit. fill high efficiency is accomplished by using a pvc fill design that provides the maximum amount of wetted surface within allowable airside pressure drop. fill is conveniently sized for easy removal. the cooling tower fill shall be high efficiency, self-extinguishing pvc, a minimum of 40 mils thick. it shall have a flame spread rating of 25 per astm standard e-84 and be impervious to rot, decay, fungus or biological attack. drift eliminators eliminators are constructed of pvc assembled in removable, easy to handle sections. a three-pass design allows three changes in air flow resulting in decreased drift rates. the use of durable pvc eliminates the corrosion problems associated with galvanized eliminators. testing all recold cooling towers are tested under the close supervision of the quality control department before being released for shipment. fans are run and spray systems operated to assure quiet, balanced operation without leaks, water carryover or vibration. nozzles are checked for proper distribution. use this data for preliminary layouts only. obtain current drawing from your marley/recold sales representative. the u p date web-based selection software available at spxcooling.com provides jt series model recommendations based on customer's specific design requirements. free datasheet http://www.ndatasheet.com
recold jt series cooling tower schematic 3 a b r c k h d j 12" 2" drain and overflow external float box spray header cleanout 12" makeup inlet outlet eliminator access access door 2" lifting hole (4) 7 / 8 " mounting hole (6) model dimensions inches access doors sump gallons note 4 far side near side a b c note 2 d h j k r top bottom top bottom jt1830 80 76 31 84 6 53 61 1 ? 4 1 1 43 jt2140 96 76 37 102 6 65 61 1 1 64 JT2550 - jt2565 115 3 ? 4 77 45 1 ? 4 124 51 1 ? 4 6 76 3 ? 4 65 1 1 1 1 95 jt3175 - jt3185 139 1 ? 2 80 1 ? 4 55 1 ? 2 144 51 6 92 67 1 1 1 1 163 jt31100 139 1 ? 2 80 1 ? 4 55 1 ? 2 144 51 6 92 67 1 1 1 1 163 jt37110 - jt37130 172 1 ? 4 92 1 ? 2 66 7 ? 8 180 1 ? 4 71 3 ? 4 6 115 71 2 1 2 1 248 jt37140 172 1 ? 4 92 1 ? 2 66 7 ? 8 180 1 ? 4 71 3 ? 4 6 115 71 2 1 2 1 248 jt40160 - jt40180 184 1 ? 4 98 1 ? 2 93 1 ? 4 192 84 1 ? 2 8 115 78 2 1 2 1 note 1 3 74 jt40215 - jt40240 208 98 1 ? 2 93 3 ? 8 217 96 1 ? 2 8 139 1 ? 4 78 2 1 2 1 note 1 454 jt40265 208 98 1 ? 2 93 3 ? 8 217 96 1 ? 2 8 139 1 ? 4 78 2 1 2 1 note 1 454 jt49290 - jt49310 221 118 1 ? 2 100 1 ? 2 225 80 10 139 1 ? 2 102 2 2 2 2 note 1 74 8 jt49340 - jt49360 245 1 ? 2 118 1 ? 2 100 1 ? 2 248 104 10 164 1 ? 2 102 2 2 2 2 note 1 880 jt49390 - jt49415 268 118 1 ? 2 100 1 ? 2 273 128 10 188 102 2 2 2 2 note 1 1012 note 1 an additional bottom access door is installed on inlet connection end. 2 overall width of unit at base rail is c plus 1". 3 maximum overall height at blower (fan) section is 118". 4. water level at top of overflow stand pipe 5 discharge duct flange is c minus 3" and k minus 3". model jt 1830 2140 2550 2565 3175 3185 31100 37100 37130 37140 40160 40180 40215 40240 40265 49290 49310 49340 49360 49390 49415 nominal tons ? 26 36 47 57 73 83 92 113 130 142 164 178 195 212 232 264 280 300 325 340 364 supply fpt 1 ? 2 1 ? 2 1 ? 2 1 ? 2 3 ? 4 3 ? 4 3 ? 4 1 1 1 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 1 1 ? 4 drain fpt 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 5 5 5 5 5 inlet mpt 2 1 ? 2 3 3 4 4 4 (2) 3 (2) 4 (2) 4 (2) 4 (2) 4 (2) 4 (2) 4 (2) 4 (2) 4 (2) 5 (2) 5 (2) 5 (2) 6 (2) 6 (2) 6 outlet mpt 4 4 6 6 6 6 6 6 6 6 6 6 6 6 6 8 8 8 8 8 8 fan diamter 18 21 25 25 31 31 31 37 37 37 40 40 40 40 40 49 49 49 49 49 49 fan rpm 625 600 430 500 350 400 462 360 410 445 385 415 385 415 430 243 267 246 271 253 278 fan cfm 5880 8060 10800 13300 15700 17100 20200 24000 27300 29700 39100 42500 45100 47200 50300 55500 61000 64500 71000 74200 84500 motor hp* (0"= 1 ? 4 " sp) 2 3 3 5 5 7. 5 10 10 15 20 20 25 20 25 30 25 30 30 40 40 50 motor frame 145t 182t 184t 184t 213t 215t 215t 254t 254t 256t 284t 256t 284t 286t 284t 284t 286t 286t 324t 324t 326t shipping weight lb 853 1142 1597 1616 2504 2528 2557 3906 3943 3988 5133 5194 5579 5675 5709 7886 7916 8486 8624 8978 9028 operating weight lb** 1210 1675 2390 2410 3870 3900 3915 5980 6010 6060 8250 8310 9365 9460 9500 14120 14150 15820 16000 17410 17460 * for static pressure from 1 ? 4 " to 1 ? 2 " esp, use next size larger motor. ** at normal operating water level in cold water basin. note: all piping connections are for standard gpm. consult recold for other flow rates. ? nominal tons are based upon 95f hw, 85f cw, 78f wb and 3 gpm/ton. the update web-based selection software provides jt model recommendations based on specific design requirements. free datasheet http://www.ndatasheet.com
recold jt series cooling tower accessories 4 spx cooling technologies, inc. 550 w mercury lane brea, california 92821 usa p: 714 529 6080 f: 714 529 3603 spxcooling@spx.com spxcooling.com in the interest of technological progress, all products are subject to design and/or material change without notice issued 2/2012 recold jt-tech-07a copyright ? 2012 spx corporation 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 towers noise level during periods of reduced load and/or reduced ambient temperature without sacrificing the systems 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 water 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. casing insulation in order to further reduce the heat loss from the unit coil, factory installed insulation on exterior coil panels is available. a protective coat of paint is applied to the insulation for protection from the weather elements. control C starter panel contains the fan motor starter, disconnect switch, thermostat sensing the cold water temperature to control the fan motor and control transformer when required by the supply power characteristics. all components are contained in a nema 12 enclosure with ul label and mounted on the unit. fan motor and controls are factory wired to the panel to provide single point connection for users power supply. panels for dual fan-motor arrangement include elapsed time meters for both motors to aid in determining energy savings. nema 3r and 4 enclosures are also available. vibration isolators spring type vibration isolator rails may be supplied for field installationsome units will require base frame structural support. electronic water level control the electronic water level control package provides a constant and accurate means of monitoring water level in the unit. for this 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. 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 40f pan water at -10f 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. all 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. stainless steel construction in addition to the standard stainless steel basin, fill supports and access doors, 300 stainless steel construction is offered as an option for upper casing panels. free datasheet http://www.ndatasheet.com
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