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Sigma Steel Cooling Tower
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Engineering Data : Schematic
6
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" =
L
C
DIAMETER FAN
4
1
/
2
" 4
1
/
2
"
COLUMNCOLUMN
C
L
C
L
COLUMN
C
L
W
OUT-TO-OUT OF TOWER
NOTE
1 Use this bulletin for preliminary layouts only. Obtain cur-
rent drawings from your Marley sales representative.
2 Last number of model indicates number of cells. Change as
appropriate for your selection. Primary engineering data is per
cell.
3 Height shown is from base of tower columns to top of fan
cylinder.
4 Pumping head shown is from base of tower columns.
H
B
TOP OF
FAN CYLINDER
BASE OF
TOWER COLUMNS
FAN DECK
13'-1
1
/8"
Tower
Model
GPM
per cell
Dimensions
Maximum
Motor hp
Average
Pumping
Head
W L H A B C
121-111 500-4500 25'-4" 12'-0" 19'-1
1
⁄8" 3 6'-0" 120" 60 17.3'
122-111 650-6000 27'-4" 16'-0" 19'-1
1
⁄8" 4 6'-0" 144" 60 17.4'
123-111 650-6000 29'-4" 16'-0" 20'-1
1
⁄8" 4 7'-0" 168" 75 17.4'
124-111 1000-7500 29'-4" 20'-0" 20'-1
1
⁄8" 5 7'-0" 168" 75 17.4'
125-111 1000-7500 33'-4" 20'-0" 20'-1
1
⁄8" 5 7'-0" 216" 75 17.5'
126-111 1000-9000 33'-4" 24'-0" 20'-1
1
⁄8" 6 7'-0" 216" 100 17.5'
127-111 1500-10500 33'-4" 28'-0" 20'-1
1
⁄8" 7 7'-0" 216" 100 17.6'