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Related Manuals for SPX Cooling Technologies SS-NC-08A
Summary of Contents for SPX Cooling Technologies SS-NC-08A
- Page 1 Marley NC Class Stainless Crossflow Cooling Tower Product Specifications...
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Page 2: Table Of Contents
NC Class Stainless Marley Specifications / Base Base Thermal Performance Performance Warranty Design Loading Construction Mechanical Equipment Fill, Louvers and Drift Eliminators Hot Water Distribution System Casing, Fan Deck and Fan Cylinder Access Cold Water Collection Basin Specifications / Options Convenience and Safety Options Guardrail and Ladder Ladder Extension... - Page 3 NC Class Stainless Marley NC Class Stainless Steel towers are factory assembled, crossflow cooling towers, designed to serve air conditioning and refrigeration systems as well as light to medium industrial process loads on clean water. They evolve from a factory-assembled concept of towers pioneered by Marley some 50 years ago, and incorporate all of the design advancements that our customers have found valuable.
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Page 4: Specifications: Base
NC Class Stainless Marley Specifications Base: Provide an induced draft, crossflow type, factory assembled, film fill, industrial duty, stainless steel cooling tower situated as shown on the plans. The limiting overall dimensions of the tower shall be _____ wide, _____ long, and _____ high. -
Page 5: Thermal Performance
NC Class Stainless Marley Specifications Thermal Performance and Efficiency: The tower shall be capable of cooling _____ m /h of water from ____ °C to _____ °C at a design entering air wet- bulb temperature of _____ C and its thermal rating shall be Certified by the Cooling Technology Institute. -
Page 6: Construction
Although SPX Cooling Technologies makes use of many structural FRP components in various other product lines, they are held to a relative minimum in the NC Class Stainless line. This is to assure that there will be no question as to the structural integrity, fire resistance, and life expectancy in the mind of the owner. -
Page 7: Mechanical Equipment
NC Class Stainless Marley Specifications 5.3* The tower shall include all design and material modifications necessary to meet the fire rating requirements of Factory Mutual. The product proposed shall be listed in the FM Approval Guide, latest edition. *Standard on models NC8301 thru NC8309. Available as an option on models NC8310 thru NC8312. -
Page 8: Fill, Louvers And Drift Eliminators
NC Class Stainless Marley Specifications Fill, Louvers and Drift Eliminators: Fill shall be film type, thermoformed of 0.40mm thick PVC, with louvers formed as part of each fill sheet. Fill shall be suspended from hot dip gal- vanized structural tubing supported from the tower structure, and shall be elevated above the floor of the cold water basin to facilitate cleaning. -
Page 9: Hot Water Distribution System
NC Class Stainless Marley Specifications Hot Water Distribution System: Two stainless steel open basins (one above each bank of fill) shall receive hot water piped to each cell of the tower. These basins shall be installed and sealed at the factory, and shall be equipped with removable, stainless steel covers capable of withstanding the loads described in paragraph 4.1. -
Page 10: Access
NC Class Stainless Marley Specifications 10.0 Access: 10.1 A large stainless steel, rectangular access door shall be located on both end panels for entry into the cold water basin. Doors shall provide access to the fan plenum area to facili- tate inspection and allow maintenance to the fan drive system. -
Page 11: Specifications: Options
NC Class Stainless Marley Specifications Convenience and Safety Options Guardrail and Ladder: 11.2 Add the following paragraph in the Access section: The top of the tower shall be equipped with a sturdy guardrail, complete with kneerail and toeboard, designed according to OSHA guidelines and factory welded into subassemblies for ease of field instal- lation. -
Page 12: Access Door Platform
NC Class Stainless Marley Specifications LADDER LADDER EXTENSION Specifications: Options Cooling Tower Specification Value GUARDRAIL ACCESS DOOR PLATFORM... -
Page 13: Plenum Walkway
NC Class Stainless Marley Specifications Access Door Platform: 11.2 Add the following paragraph in the Access section: There shall be an access platform at the base of the tower extending from the vertical lad- der to the endwall access door. The platform shall be galvanized steel bar grating, supported by galvanized steel framework attached to the tower. -
Page 14: Control Options
NC Class Stainless Marley Specifications Control Options Fan Motor Starter Control Panel: Add the following paragraph in the Mechanical Equipment sec- tion: Each cell of the cooling tower shall be equipped with a UL listed control system in a IP14 or IP56 out- door enclosure capable of controlling single-speed or two-speed motors as required, and designed specifically for... -
Page 15: Vibration Limit Switch
NC Class Stainless Marley Specifications Vibration Limit Switch: 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. -
Page 16: Fan Motor Variable Speed Drive
NC Class Stainless Marley Specifications in quantities and locations as indicated on the drawings. An overflow and drain connection shall be provided in each cell of the cooling tower. The basin floor shall slope toward the drain to allow complete flush out of debris and silt which may accumulate. -
Page 17: Marley Premium Vfd System
NC Class Stainless Marley Specifications: Options Cooling Tower Specifications Specification Value cold-water temperature. The application must be able to handle very cold water while VFD is in a by-pass mode. Operator controls shall be mounted on the front of the enclosure and shall consist of start and stop control, bypass/VFD selection, Auto/Manual selections, manual speed control. -
Page 18: Miscellaneous Options
NC Class Stainless Marley Specifications shall be operated as a stand- alone sys- tem without the need for a BMS system. Operator controls shall be mounted on the front of the enclosure and shall consist of start and stop control, bypass/ VFD selector switch, Auto/Manual selector switch, manual speed control, and solid-state temperature controller. -
Page 19: Inlet Flow Control Valves
NC Class Stainless Marley Specifications Inlet Flow Control Valves: 8.2: Add the following to the end of the paragraph: Heavy-duty flow-regulator valves shall be provided at the hot water inlet connections. These valves shall be disc-type, with cast iron bodies and stainless steel operating stems. -
Page 20: Outlet Sound Attenuators
NC Class Stainless Marley Specifications box which is self supporting. The inlet attenuation will not be allowed to impact the thermal performance effi- ciency of the basic tower configuration. Outlet Sound Attenuation Add the following paragraph under Base: The cooling tower shall be equipped with outlet sound attenuation baffles positioned and spaced horizon- tally across the entire fan opening. -
Page 21: Ultra Low-Noise Fan
NC Class Stainless Marley Specifications Ultra Low-Noise Fan Replace paragraph 6.1 with the fol- lowing: Fan(s) shall be propeller-type, incorporating wide-chord forward- swept FRP blades and galvanized hubs. Blades shall be individually adjustable. Maximum fan tip speed shall be 51 m/s. Fan(s) shall be driven through a right angle, industrial duty, oil lubricated, geared speed reducer that requires no oil changes for the first... -
Page 22: Multicell Basin Equalizer Outlets
NC Class Stainless Marley Specifications ______ psf, as well as a ______ seismic load. The fan deck and hot water basin covers shall be designed for 50 psf live load or a 200 lb. concentrated load. Guardrails, where specified, shall be capable of withstanding a 200 lb. - Page 24 SPX COOLING TECHNOLOGIES UK LTD. 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. ©2008 SPX Cooling Technologies...