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This booklet not only relates the language to use in describing an appropriate Sigma Steel cooling tower— but also defines why certain items and features are important enough to specify with the intention of insisting upon compliance by all bidders. The left-hand column of pages 11 thru 25 provides appropriate text for the various specification paragraphs, whereas the right-hand column comments on the meaning of the subject matter and explains its value. Pages 12 thru 19 indicate those paragraphs which will result in the purchase of a cooling tower which will not only accomplish the specified thermal performance— but which will include normal operation- and maintenance- enhancing accessories and features. It will also incorporate those standard materials which testing and experience has proven to provide best results in normal operating conditions. Pages 20 thru 27 provide some paragraphs intended to add those features, components, and materials that will customize the tower to meet the user's requirements. Space does not permit definition and explanation of all of the possible options that can be applied to the Sigma Steel. SPX Cooling Technologies realizes that you, the purchaser, must be happy with the tower's characteristics, and we are prepared to provide—or provide for—any reasonable enhancement that you are willing to define and purchase. Your needs will become part of the continuing betterment of this Marley product line. Marley / Sigma Steel Cooling Tower / Engineering Data : Schematic Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative. The UPDATE web-based selection software —available at spxcooling.com—provides Sigma Steel model recommendations based on customer's specific design requirements. A BAYS AT 4'-0" = LC DIAMETER FAN 41/2" 41/2" COLUMNCOLUMN CLCLCOLUMNCLW OUT-TO-OUT OF TOWER H B TOP OF FAN CYLINDER BASE OF TOWER COLUMNS FAN DECK 13'-11/8" Tower Model GPM per cell Dimensions Maximum Motor hp Average Pumping HeadW L H A B C 121-111 500-4500 25'-4" 12'-0" 19'-11.8" 3 6'-0" 120" 60 17.3' 122-111 650-6000 27'-4" 16'-0" 19'-11.8" 4 6'-0" 144" 60 17.4' 123-111 650-6000 29'-4" 16'-0" 20'-11.8" 4 7'-0" 168" 75 17.4' 124-111 1000-7500 29'-4" 20'-0" 20'-11.8" 5 7'-0" 168" 75 17.4' 125-111 1000-7500 33'-4" 20'-0" 20'-11.8" 5 7'-0" 216" 75 17.5' 126-111 1000-9000 33'-4" 24'-0" 20'-11.8" 6 7'-0" 216" 100 17.5' 127-111 1500-10500 33'-4" 28'-0" 20'-11.8" 7 7'-0" 216" 100 17.6' NOTE 1 Use this bulletin for preliminary layouts only. Obtain cur-3 Height shown is from base of tower columns to top of fan rent drawings from your Marley sales representative. cylinder. 2 Last number of model indicates number of cells. Change as 4 Pumping head shown is from base of tower columns. appropriate for your selection. Primary engineering data is per cell. Marley / Sigma Steel Cooling Tower / Engineering Data : Support W OVERALL OF BASIN SUMP AIR INLET FACE CASED ENDWALL FACE 6" A SPACES AT 4'-0" = L AIR INLET FACE OVERFLOW RECOMMENDED OPERATING WATER LEVEL 1'-6" 6" CASED ENDWALL FACE Section INTERMEDIATE PRIMARY SUPPORT BEAM BEAM Plan Tower Model A Dimensions W L Operating Weight lb Single Fan Cell Each Cell Add 121-111 3 23'-8" 12'-0" 37670 33150 122-111 4 25'-8" 16'-0" 49875 45105 123-111 4 27'-8" 16'-0" 50320 45230 124-111 5 27'-8" 20'-0" 60290 55200 125-111 5 31'-8" 20'-0" 67150 61220 126-111 6 31'-8" 24'-0" 77960 72115 127-111 7 31'-8" 28'-0" 88850 83590 NOTE 1 Use this bulletin for preliminary layouts only. Obtain current drawings from your Marley sales representative. 2 Steel beams must include 7.8" dia. holes to accept anchor bolts provided with tower. Other contractors or purchaser must design and erect supporting steel. 3 Maintain at least 2'-0" of clear space at tower endwalls for construction purposes. Air inlet faces must have unobstructed air supply. If obstructions exist nearby, consult your Marley sales representative. 4 Operating weight is wet weight of tower and steel basin, including 6" of water in the cold water basin. 5 View shown is typical single cell beam arrangement. Marley / Sigma Steel Cooling Tower / Engineering Data : Concrete Basin 6" MIN. 6" MIN. 5" W IN TO IN OF BASIN 6" MIN. CASED ENDWALL FACE SUMP Plan 6" MIN. 5" ANCHOR BOLTS (SEE NOTE 5) A SPACES AT 4'-0" = L PER CELL CASED ENDWALL FACE AIR INLET FACE AIR INLET FACE 1'-6" 1'-0 RECOMMENDED OPERATING WATER LEVEL Section Tower Model Dimensions Operating Weight lb A W L Single Fan Cell Each Cell Add 121-111 3 23'-6" 12'-0" 25200 21525 122-111 4 25'-6" 16'-0" 32280 28430 123-111 4 27'-6" 16'-0" 33300 29080 124-111 5 27'-6" 20'-0" 39230 35025 125-111 5 31'-6" 20'-0" 42800 37715 126-111 6 31'-6" 24'-0" 48780 43910 127-111 7 31'-6" 28'-0" 54830 50550 NOTE 1 Use this bulletin for preliminary layouts only. Do not use for construction. Obtain current drawings from your Marley sales representative. Concrete basin design and construction are by other contractors or purchaser. 2 Operating weigh...