SPX Cooling Technologies Marley Sigma Steel User Manual
Marley Sigma Steel Cooling Tower
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Engineering Data & Specifications
Marley / Sigma Steel Cooling Tower
Engineering Data
Schematic 6
Support 7
Concrete Basin 8
Piping 9
Environmental 10
Energy Management 11
Specifications / Base
Base 12
Thermal Performance 13
Construction 14
Fan Deck and Fan Cylinder 15
Mechanical Equipment 15
Fill, Louvers and Drift Eliminators 17
Hot Water Distribution System 18
Casing 18
Access 18
Cold Water Collection Basin 19
Scope of Work 19
Table of Contents
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Specifications / Options
Control Options
Control System 20
Basin Heater 21
Fan Motor Variable Speed Drive 21
Marley Premium VFD System 22
Vibration Limit Switch 23
Convenience and Safety Options
Stairway 24
Plenum Walkway 24
Ladder Extension 24
Ladder Safety Cage 24
Oil Level Sight Glass 25
Miscellaneous Options
Steel Cold Water Basin 25
Factory Mutual Approval 25
Hot Water Basin Covers 25
Air Inlet Screens 25
Low Noise Tower 26
Service Life-Relate Customization 27
Marley / Sigma Steel Cooling Tower
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5
he Sigma Steel is a galvanized steel, field-erected,
T
general purpose crossflow cooling tower, designed
to serve normal air conditioning and refrigeration systems as well as medium sized industrial loads. Evolving from the crossflow concept of towers pioneered
by Marley in 1938, and incorporating over 70 years of
design advancements, the Sigma Steel represents the
current state of the art in this cooling tower category.
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
A
BAYS AT 4'-0" =
L
C
DIAMETER FAN
41/2" 41/2"
COLUMNCOLUMN
C
L
C
L
COLUMN
C
L
W
OUT-TO-OUT OF TOWER
H
B
TOP OF
FAN CYLINDER
BASE OF
TOWER COLUMNS
FAN DECK
13'-1
1
/8"
Engineering Data : Schematic
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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.
Tower
Model
121-111 500-4500 25'-4" 12'-0" 19'-1
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'-1
124-111 1000-7500 29'-4" 20'-0" 20'-1
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'
GPM
per cell
W L H A B C
Dimensions
1
⁄8" 3 6'-0" 120" 60 17.3'
1
⁄8" 4 7'-0" 168" 75 17.4'
1
⁄8" 5 7'-0" 168" 75 17.4'
Maximum
Motor hp
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.
Average
Pumping
Head
Marley / Sigma Steel Cooling Tower
A
SPACES AT 4'-0" =
L
6"
W
OVERALL OF BASIN
SUMP
OVERFLOW
AIR INLET FACE
AIR INLET FACE
CASED ENDWALL FACE
CASED ENDWALL FACE
PRIMARY SUPPORT
BEAM
INTERMEDIATE
BEAM
1'-6"
6"
RECOMMENDED
OPERATING WATER LEVEL
Engineering Data : Support
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7
Section
Plan
Tower
Model
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
A W L Single Fan Cell Each Cell Add
NOTE
1 Use this bulletin for preliminary layouts only. Obtain cur-
rent drawings from your Marley sales representative.
2 Steel beams must include
provided with tower. Other contractors or purchaser must
design and erect supporting steel.
7
⁄8" dia. holes to accept anchor bolts
Dimensions Operating Weight lb
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
6" MIN.
5"
6" MIN.
5"
ANCHOR BOLTS
(SEE NOTE 5)
6" MIN.
6" MIN.
A
SPACES AT 4'-0" =
L
PER CELL
CASED ENDWALL FACE
CASED ENDWALL FACE
AIR INLET FACE
AIR INLET FACE
SUMP
W
IN TO IN OF BASIN
1'-6"
1'-0
RECOMMENDED
OPERATING WATER LEVEL
Engineering Data : Concrete Basin
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Plan
8
Tower
Model
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
A W L Single Fan Cell Each Cell Add
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 weight is total wet operating weight of tower
only, excluding water in concrete basin.
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.
Section
Dimensions Operating Weight lb
4 Minimum basin depth is 1'-6". Basin depth may vary to suit
your storage requirements.
5 All anchor bolts complete with nut and washer must be
furnished by others. Bolts must be
all-thread projection.
6 Other contractors or purchaser must design, locate,
construct, and furnish sump(s) and overflow(s) to suit
requirements. The sump(s) should be designed according
to the pump manufacturer’s recommendations. Other
design sources: ANSI/HI specifications 1.1-1.5 for
centrifugal pumps, 2.1-2.5 for vertical pumps, and 9.8 for
pump intake design.
3
⁄4" diameter with 11⁄2"
Marley / Sigma Steel Cooling Tower
C C
COLUMN AND
ANCHOR BOLT
TYP. SINGLE CELL
D
TYP. MULTICELL
C
L
COLUMN AND
ANCHOR BOLT
C
L
FAN
C
L
INLET
C
L
INLET
C
L
FAN
C
L
F
MIN
REQUIRED CLEARANCE
C
L
E
G
C
OF FLANGE TO
BASE OF TOWER
COLUMNS (USE FOR
STATIC LIFT)
FAN
FACE OF
A
DIA
INLET FLANGE
MARLEY PIPING
STOPS HERE
B
DIA FLOW
CONTROL VALVE
C
L
L
C
L
TOWER
C
L
Engineering Data : Inlet Piping
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9
Tower
Model
121-111
GPM
per cell
A B C D E F G
500-3800 10" 8"
3801-4500 12" 10" 9'-01⁄2" 14'-73⁄4"
122-111 650-6000 14" 10" 8'-0" 16'-0" 10'-0
123-111 650-6000 14" 10" 8'-0" 16'-0" 11'-0
124-111
125-111 1000-7500 16" 12" 10'-0" 20'-0" 13'-11⁄2" 17'-11⁄4" 14'-83⁄4"
126-111 1000-9000 16" 12" 12'-0" 24'-0" 13'-11⁄2" 17'-11⁄4" 14'-83⁄4"
127-111 1500-10500 18" 14" 14'-0" 28'-0" 13'-55⁄8" 17'-11⁄4" 14'-93⁄4"
1000-6000 14" 10"
6001-7500 16" 12" 11'-11⁄2" 14'-83⁄4"
NOTE
1 Use this bulletin for preliminary layouts only. Obtain
current drawings from your Marley sales representative.
2 Pumping head contributed by the tower is static lift
“G”. Actual pumping head will vary according to tower
circulating GPM. Total pumping head will be furnished at
time of proposal.
3 If your application requires a bypass system,
recommended location is through tower endwall into
plenum area. Review of the system by SPX engineering is
required.
Dimensions
6'-0" 12'0"
10'-0" 20'-0"
4 Marley piping terminates at face of a cast iron flat face
flange. Bolt circle conforms to class 125 lb. ANSI B 16.1
specifications.
5 Supports on tower for crossover piping are part of the
tower design. Do not support the riser’s dead load or
operating load from the tower. Do not brace the riser’s
seismic or thrust loads against the tower.
6 Butterfly valves or piping expansion joints (if used) are
by others and must be located outside the limits of the
cooling tower
7 Motor must be located 180° from inlet.
1
8'-10
⁄2"
1
⁄2" 14'-11⁄4" 14'-73⁄4"
1
⁄2" 15'-11⁄4" 14'-73⁄4"
11'-01⁄2"
13'-11⁄4"
15'-11⁄4"
“F”.
14'-63⁄4"
14'-73⁄4"
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