SPX Cooling Technologies Marley Aquatower User Manual
Marley Aquatower® Cooling Tower
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2
/ The Aquatower Advantage /
■ Proven Performance. CTI Certified. Plus SPX stands by
its responsibility for reliable thermal performance. We
designed it. We rate it. We guarantee it!
■ Induced-Draft Design. Save on fan power. The fan will
operate in a warm atmosphere even in winter, so you’ll
never have to work on frozen mechanical equipment.
■ Crossow Design. Save on pump power because you
only pay to move the water to the top of the tower. Gravity
does the rest. The mechanical equipment and water
distribution system are out where you can easily maintain
them.
■ All-Season Reliability. Aquatowers perform as specified
in the heat of summer. They respond well to energy
management techniques in the spring and fall and
with appropriate fan controls, they can operate virtually
ice-free in the dead of winter. Plus they offer simple
maintenance all year long.
■ Proven Corrosion Protection. Thousands of users
over more than 40 years confirm the value of heavy
galvanizing. And Marley’s Z-600 is the most effective
galvanizing used in the industry.
■ PVC Film Fill with Integral Drift Eliminators and
Louvers. If you’ve ever had to replace deteriorated
eliminators or louvers, you’ll appreciate this advantage.
Now those components are molded right in the PVC fill
sheets. Integral honeycomb louvers keep the circulating
water inside your tower—and off your roof!
■ Select Your Aquatower on Our Website. The Marley
UPDATE web-based selection software—available at
www.spxcooling.com—provides Aquatower model
recommendations based on your specific design
requirements
■ Simple, Flexible Installation. Just mount the motor, belts
and belt guard, install the outlet connection that suits
your needs—both side suction and bottom outlet are
provided, complete with screens—and adjust the float
valve. Attach air-inlet screens on models 494A and larger
and your Aquatower is ready for operation.
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/ The Marley Difference /
Today’s Aquatower may be the most space/energy-
efficient cooling tower available. Your needs have dictated
constant technological improvement. Thousands of
Aquatower users enjoy the benefits of eight major redesigns
and dozens of minor improvements in the past 40 years. For
example, PVC film-fill enables the Aquatower to reject more
heat per unit size. We also put the air inlet louvers and drift
eliminators right on the fill sheets. This new arrangement
saves you fanpower by improving airflow through the tower.
The Aquatower is a maintenance delight! You’ll
appreciate the way the Aquatower simplifies maintenance.
No hidden spray systems, tiny nozzles, or enclosed basins
here! You can easily replace and align V-belts from outside
the tower. You won’t have the chore and expense that goes
with high-power, blower fan towers.
All primary components of the Aquatower are open to
view. You can easily remove any debris from the upper basin
or nozzles while the tower is in operation.
Heavy mill galvanizing on all steel components prevents
base metal corrosion. You won’t have to worry about paint
chips clogging your strainers and nozzles, because there is
no paint to flake off. Heavy galvanizing also protects much
better than paint.
Above all, the Aquatower is readily available. You won’t
have to wait around—or accept second best—when you
need a cooling tower. We maintain an impressive stock of
completed towers at our own plants. A growing number of
local distributors can draw from that stock.
Contact your local distributor or Marley representative.
They’ll be glad to help you choose the proper model for
your needs. They can also help you with your layout and
piping.
You’ll enjoy single source responsibility and reliability
because we design and manufacture virtually all major
cooling tower components.
All Marley components are designed and selected to
be a part of an integrated system. For example, the spray
pattern from nozzles and the pressure drop through drift
eliminators both affect a fill’s heat transfer capacity. So, we
include that impact in our thermal analysis.
Drift eliminators must be effective at the air velocities
where fill is most efficient. So, we’ve carefully designed
both components to work together efficiently.
How many other cooling tower companies can offer
you this assurance? They may use Brand “A” nozzles with
Brand “B” fill and Brand “C” drift eliminators. When they all
come together, the whole may be less than the sum of the
parts.
Our total system approach assures that all the
parts work together to provide you the greatest total
performance.
And because we design specifically for cooling towers,
all our components will provide many years of service with
minimal maintenance.
Every Aquatower cooling tower carries a full one-year
warranty. The Aquatower you buy from us will work on
your job or we’ll make it right. Your warranty includes
thermal performance and every component of the tower.
The SPX Cooling Technologies warranty is your assurance
of performance—for a full year.
The Aquatower has inspired many imitators. Only
SPX Cooling Technologies can offer you the original.
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/ Schematic /
USE FOR
STATIC LIFT
L
INLET
C
L
TOWER
OUTLET
C
L
C
L
C
L
TOWER
W
D
S
E
C
B
H
MOTOR
INLET PIPING
(BY OTHERS)
A
SIDE OUTLET
BOTTOM OUTLET
TOWER COLLECTION
BASIN
VERTICAL
DISCHARGE
(OPTION-NOTE 3)
AIR INLET ELEVATION
Tower
Nominal Tons
Model
490A 8 902 1292 1610 4 02 175 610
490B 10 902 1292 1610 402 175 610 1318 .75 2" 2" F
492A 22 1206 1543 2248 432 241 1219
492B 28 1206 1543 2248 432 241 1219 203 195 6 1.5 4" 4" M
493A 36 1816 1549 2248 432 241 1524
493B 42 1816 1549 2248 432 241 1524 203 195 6 2.2 4" 4" M
494A 51 1816 1972 2743 608 292 1829 3251 235 2403 1.5 6" 6" MC
494B 57 1816 1972 2743 608 292 1829 3251 235 2403 2.2 6" 6" MC
494C 68 1816 1972 2743 608 292 1929 3251 235 2403 3.7 6" 6" MC
495A 80 2426 1975 2743 608 292 2134 3251 235 2403 3.7 6" 6" MC
495B 91 2426 1975 2743 608 292 213 4 3251 235 2403 5.5 6" 6" MC
496A 111 3035 1984 2953 589 292 2743 3345 235 2610 3.7 6" 6" MC
496B 126 3035 1984 2953 589 292 2743 3345 235 2610 5.5 6" 6" MC
1. Nominal tons are based upon 35°C HW, 29.5°C CW, 25.5°C WB
and .68 m
note1
L W H A B C note 2 D E S
3
/hr per ton. The Marley UPDATE web-based selection
software provides Aquatower model recommendations based
on specific design requirements.
2. Minimum clearance for adequate air supply. Consult your Marley
sales representative or your local distributor if this clearance is
impractical for your job.
3. Vertical discharge hood is for applications in restrictive enclosures
or other locations where horizontal discharge is not desirable. CTI
Certification does not apply when this option is selected. Available
Dimensions
note 3 note 6
note 3
note 3
4. Motors are 400 volt, 3-phase TEFC.
5. Motor, belt and belt guard ship uninstalled. Installation by others.
6. Outlet sizes shown are side outlets. All models except 490A and
490B have connections for both side and bottom outlet. Install the
desired connection and seal the unused opening with the coverplate provided. Pump suction should use side outlet. See page 9
for size and flow capacities of bottom outlets.
7. Overflow is a 2" F connecton located in side of collection basin.
8. Drain is a 2" F connection located in collection basin floor.
9. Makeup valve connection is 3/4" M located in tower side.
SIDE ELEVATION
Piping
Motor
kW
1318 .25 2" 2" F
203 195 6 .75 4" 4" M
203 195 6 1.5 4" 4" M
Connection
Inlet
Outlet
note 6
only on models 494A and larger.
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