/ Marley MCW Cooling Tower / Engineering Data & Specifications
Marley / MCW Cooling Tower / Table of Contents Engineering Data Schematic Support Noise Attenuator Option Hoisting Info Freeze Prevention Water Quality 6 16 18 19 20 21 Specifications / Base Base Thermal Performance Performance Warranty Design Loading Construction Mechanical Equipment Fill, Louvers and Drift Eliminators Hot Water Distribution System Casing Access Collection Basin Warranty 22 22 22 23 23 23 24 25 25 25 25 25 Specifications / Options Stainless Steel Options Stainless Steel Collection Bas
Marley / MCW Cooling Tower / ■ Air Movement Package Forward-curved centrifugal fans are dynamically balanced and mounted on tubular steel shafts Fans are supported by roller-bearings mounted at both ends with heavy-guage steel supports. Spherical roller bearings are rated at an L10 life of 50,000 hours. Fan guard / Air-inlet screens are 16 gauge galvanized steel. TEFC Fan Motor—1.15 service factor, variable torque, and specially insulated for cooling tower duty.
Marley / MCW Cooling Tower / MCW Series towers are galvanized steel, factory assembled, forced draft, counterflow cooling towers, designed to serve air conditioning and refrigeration systems as well as light to medium industrial process loads on clean water. The Marley MCW cooling tower is particularly suited to the urban environment, reducing noise while increasing energy efficiency and performance.
Marley / MCW Cooling Tower / Engineering Data : Schematic Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The Marley UPDATE web-based selection software —available at www.spxcooling.com—provides MCW Series model recommendations based on customer's specific design requirements.
Marley / MCW Cooling Tower / Engineering Data : Schematic Model note 2 Nominal Tons note 3 Dimensions Motor kW C H M Inlet / Outlet dia 1.1 2285 2555 240 65 901116B-1 18 901116C-1 20 1.5 2285 2555 240 65 901116D-1 23 2.2 2285 2555 240 65 901117D-1 26 2.2 2585 2555 240 65 901117F-1 31 3.7 2585 2555 240 65 901126F-1 45 3.7 2255 2555 240 80 901126H-1 50 5.5 2255 2555 240 80 901127H-1 57 5.5 2555 2555 240 80 901127J-1 62 7.
Marley / MCW Cooling Tower / Engineering Data : Schematic 8 Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The Marley UPDATE web-based selection software —available at www.spxcooling.com—provides MCW Series model recommendations based on customer's specific design requirements.
Marley / MCW Cooling Tower / Engineering Data : Schematic Nominal Tons Model note 2 Dimensions Motor kW note 3 C Inlet / Outlet dia H 901146K-1 102 5.5 x 2 2285 2555 150 901147K-1 117 5.5 x 2 2585 2855 150 901147L-1 125 7.5 x 2 2585 2855 150 901156K-1 134 5.5 x 2 2300 2555 150 901156L-1 150 7.5 x 2 2300 2555 150 901157L-1 170 7.
Marley / MCW Cooling Tower / Engineering Data : Schematic 2400 115 115 3550 INLET CL H INSTALLED HEIGHT C ACCESS DOOR OUTLET SIDE ELEVATION AIR INLET ELEVATION ALL MODELS 115 MODELS 901546M - 901549P 5380 CL H INSTALLED HEIGHT AIR INLET ELEVATION MODELS 901556N - 901558R 10
Marley / MCW Cooling Tower / Engineering Data : Schematic Model note 2 Nominal Tons Motor kW note 3 18.5 Dimensions C H Inlet / Outlet dia 3770 4070 200 901546M-1 214 901546N-1 225 22 3770 4070 200 901547M-1 239 18.
Marley / MCW Cooling Tower / Engineering Data : Schematic Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The Marley UPDATE web-based selection software —available at www.spxcooling.com—provides MCW Series model recommendations based on customer's specific design requirements.
Marley / MCW Cooling Tower / Engineering Data : Schematic Model note 2 Nominal Tons Motor kW note 3 Dimensions C H Inlet / Outlet dia 11 3930 4340 200 901731K-1 142 901732L-1 179 15 4290 4700 200 901732M-1 191 18.5 4290 4700 200 901736L-1 178 15 3930 4340 200 901736M-1 190 18.
Marley / MCW Cooling Tower / Engineering Data : Schematic 14 Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The Marley UPDATE web-based selection software —available at www.spxcooling.com—provides MCW Series model recommendations based on customer's specific design requirements.
Marley / MCW Cooling Tower / Engineering Data : Schematic Model note 2 Nominal Tons Motor kW note 3 Dimensions C H Inlet / Outlet dia 901946N-1 251 22 3730 4030 200 901946P-1 275 30 3730 4030 200 901947N-1 280 22 3960 4260 200 901947P-1 309 30 3960 4260 200 901948N-1 307 22 4260 4560 200 901948P-1 340 30 4260 4560 200 901949P-1 358 30 4690 4990 200 901949Q-1 389 37 4690 4990 200 901949R-1 416 45 4690 4990 20 901956Q-1 375 37 x 2 3730 4055 25
Marley / MCW Cooling Tower / Engineering Data: Support C 152 CL ANCHOR BOLT ANCHORCL BOLT 20 152 ANCHORCL BOLT HOLES FOR M12 DIA. ANCHOR BOLTS 4 REQD CL ANCHOR BOLT 1210 A 20 TOWER COLLECTION BASIN- AIR INLET FACE SUPPORTING STEEL SINGLE CELL Model 90111 C 608 90112 1520 90113 2432 90114 3344 90115 5168 SUPPORT BY OTHERS NORMAL GAUGE VIEW A NOTE 1 Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative for final design.
Marley / MCW Cooling Tower / Engineering Data: Support C 20 20 ANCHORCL BOLT CL ANCHOR BOLT 20 17 ANCHOR CL BOLT A HOLES FOR M10 DIA.
Marley / MCW Cooling Tower / Engineering Data : Schematic : Attenuators E D C B SIDE ELEVATION AIR INLET ELEVATION ALL MODELS A Dimensions Model 90111 90112 90113 90114 90115 90154 90155 90173 90174 90175 90194 90195 A B C D E 912 1100 1113 1125 1250 1700 1113 1725 1250 912 1100 1113 1125 1250 1824 1700 1113 1725 1250 1824 1100 1113 1125 1250 2736 1700 1113 1725 1250 2736 1100 1113 1125 1250 3648 1700 1113 1725 1250 3648 1100 1113 1125 1250 5472 17
Marley / MCW Cooling Tower / Engineering Data : Hoisting B A 80°MAX D Lower Module Model 19 80°MAX C Upper Module A B Weight kg 90111 510 1250 240 90112 1420 1250 380 90113 2340 1250 515 90114 3300 1250 90115 2690 1250 90154 1245 90155 90173 D Weight kg 920 1250 335 1834 1250 455 2746 1250 575 655 3658 1250 695 930 5482 1250 935 2400 1820 3550 2400 1265 3075 2400 2417 5380 2400 1700 2515 2980 1634 2680 2960 1220 90174 1295 2980 2176 3
Marley / MCW Cooling Tower / Engineering Data: Freeze Prevention When the ambient air temperature falls below 0°C, the water in a cooling tower can freeze. Marley Technical Report #H-003 “Operating Cooling Towers in Freezing Weather” describes how to prevent freezing during operation. Available at spxcooling.com or ask your Marley sales representative for a copy. During shutdown, water collects in the cold water basin and may freeze solid.
Marley / MCW Cooling Tower / Engineering Data: Water Quality The MCW cooling tower can be a very effective air washer. Atmospheric dust able to pass through the relatively small louver openings will enter the recirculating water system. Increased concentrations can intensify systems maintenance by clogging screens and strainers—and smaller particulates can coat system heat transfer surfaces.
Marley / MCW Cooling Tower / Specifications: Base Specifications 1.0 Base: 1.1 Furnish and install a forced-draft, counterflow-type, factory assembled, film fill, industrial duty, galvanized steel, cooling tower. Unit shall consist of _____ cell(s), as shown on plans. The limiting overall dimensions of the tower shall be _____ wide, _____ long, and _____ high. Total operating kW of all fans shall not exceed _____ kW, consisting of_____ @ _____ kW motor(s).
Marley / MCW Cooling Tower / Specifications: Base Specification Value Specifications 4.0 Design Loading: 4.1 The tower and its components shall be designed to withstand a wind load of 1.44 kPa as well as .3g seismic load. The cooling tower shall be designed to withstand shipping and hoisting loads of 2g horizontal or 3g vertical. Handrails, where specified shall be capable of withstanding a 890 N concentrated live load in any direction and shall be designed in accordance with OSHA guidelines. 5.
Marley / MCW Cooling Tower / Specifications: Base Specifications ment. Fan(s) shall be driven through one-piece, multi-groove, V-belt, pulleys, and spherical roller bearings. Bearings shall be rated at an L10 life of 50,000 hours, or greater. A hinged motor adjustment plate with threaded tensioning bolts shall be installed to allow correct belt tensioning. 6.2 Motor(s) shall be ____ kW maximum, Totally Enclosed, 1.15 service factor, variable torque, and specially insulated for cooling tower duty.
Marley / MCW Cooling Tower / Specifications: Base Specifications 9.0 Casing: 9.1 The casing shall be heavy- gauge heavy-mill galvanized steel and shall be capable of withstanding the loads described in paragraph 4.1. 10.0 Access: 10.1 A large galvanized, rectangular access door shall be located on both end panels for entry into the cold water basin. Rectangular panels are shall be provided for access to the fan plenum area to facilitate inspection and allow maintenance to the fan drive system 11.
Marley / MCW Cooling Tower / Specifications: Options Specifications Specification Value Stainless Steel Options Stainless Steel Collection Basin: 11.1: Replace paragraph 11.1 with the following: The collection basin shall be heavy-gauge Series 300 stainless steel and shall include the number and type of suction connections required to accommodate the out-flow piping system shown on the plans. Suction connections shall be equipped with debris screens.
Marley / MCW Cooling Tower / Specifications: Options Specifications Specification Value A ladder shall be permanently attached to the platform and to the casing of the tower, rising from the base of the tower to the top of the handrail Ladder Extension: 10.2 Add the following to the end of paragraph 11.2: Provide a ladder extension for connection to the foot of the ladder. This extension shall be long enough to rise from the roof (grade) level to the base of the cooling tower.
Marley / MCW Cooling Tower / Specifications: Options Specifications Specification Value Control Options Fan Motor Starter Control Panel: 6.4 Add the following paragraph in the Mechanical Equipment section: Each cell of the cooling tower shall be equipped with a UL listed control system in a IP14 or IP56 outdoor enclosure capable of controlling single-speed or two-speed motors as required, and designed specifically for cooling tower applications.
Marley / MCW Cooling Tower / Specifications: Options Specification Value Specifications Vibration Limit Switch: 6.5 Add the following paragraph in the Mechanical Equipment section: A single-pole, double-throw vibration limit switch in a IP56 housing shall be installed on the mechanical equipment support for wiring into the fan motor shutdown circuit. The purpose of this switch will be to interrupt power to the motor in the event of excessive vibration.
Marley / MCW Cooling Tower / Specifications: Options Specifications System monitoring the tower fluid temperature. As an option to receiving the speed reference signal from a building management system, the drive must have the capability to receive a 4-20 ma temperature signal from an RTD transmitter. The VFD shall have an internal PI regulator to modulate fan speed maintaining set point temperature.
Marley / MCW Cooling Tower / Specifications: Options Specifications lockable in the off position for safety. The system shall include a solid state, PI temperature controller to adjust frequency output of the drive in response to the tower fluid temperature. The temperature of the fluid and set point shall be displayed on the door of the control panel. The bypass shall include a complete magnetic bypass circuit with capability to isolate the VFD when in the bypass mode.
Marley / MCW Cooling Tower / Specifications: Options Specifications Specification Value Miscellaneous Options Sound Control 1.2 Add the following paragraph under Base: The cooling tower shall be quiet operation, and shall produce an overall level of sound not higher than _______ dB(A) measured at the critical location indicated on the plans.
Marley / MCW Cooling Tower / Specifications: Options Specifications Specification Value Premium Efficiency Motor: 6.3 Replace paragraph 6.3 with the following: The fan and fan drive assembly for each cell shall be supported by a rigid, welded, hot dip galvanized steel structural support that resists misalignment. The mechanical equipment assembly shall be warranted against any failure caused by defects in materials and workmanship for no less than five (5) years following the date of tower shipment.
GREGORY'S BANK WORCESTER WR3 8AB UNITED KINGDOM 44 (0) 1905 720 200 info.uk@spx.com spxcooling.com In the interest of technological progress, all products are subject to design and/or material change without notice.
