SPX Cooling Technologies Marley NC Class User Manual

Marley NC® Class Cooling Tower

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Quiet By Design

Four-cell NC Class cooling tower

serving a municipal power plant.

The Result of Sound Engineering

The NC Class not only sets the benchmark for low sound

levels it also sets the benchmark for some of the highest

crossflow tonnage densities per box in the industry. For over 50

years NC cooling towers have delivered thermal performance,

low maintenance, versatility of options and outstanding value.

But, of even greater significance, the NC Class is now quieter.

The redevelopment, redesign, the “evolution” of the NC

cooling tower into the NC Class was the first project at

SPX Cooling Technologies to fully utilize and employ our

new ISO 9001 Certified “Product Development Process.”

■ Long Life Construction

W

3’-6” **

L

H

■ Real World Design

Available in series 300 stainless steel or rugged heavy mill

galvanized steel. Marley ISO certified plants assure quality

factory-assembly. Plus, the NC Class stainless steel tower

comes with SPX Cooling Technologies’ exclusive 5-year

limited warranty.

■ Low Operating Costs

Marley's high-efficiency fill and fans, gravity-flow water

distribution, and efficient mechanical drive systems work

together to offer maximum cooling with minimum power use.

■ All Season Performance

Performs as specified in the heat of summer—responds

well to energy-management techniques in the spring and

fall—operates virtually ice-free in the dead of winter—and

offers simple maintenance all year long.

Designed for severe wind, seismic,

shipping, operating and live loads.

■ CTI Certified

Plus, we guarantee the

thermal performance of each

tower as installed.

■ Factory Mutual Approved

FM approval is available on the

entire line of NC Class cooling

towers. Currently 94 NC Class tower

models are FM approved without

any additional cost.

P r o v e n D e s i g n G u a r a n t e e d P e r f o r m a n c e

TOWER MODELS TONS L W H

NC8301 94-180 6'-5" 14'-0" 10'-2"

NC8302 118-242 7'-11" 15'-6" 10'-2"

NC8303 154-297 7'-11" 15'-6" 11'-11"

NC8304 217-372 8'-11" 17'-0" 13'-0"

NC8305 281-520 10'-11" 18'-9" 13'-0"

NC8306 350-582 11'-11" 19'-10" 13'-0"

NC8307 343-651 11'-11" 22'-5" 13'-4"

NC8309 481-750 13'-11" 22'-5" 13'-4" **

NC8310* 567-915 10'-11" 22'-5" 19'-10" **

NC8311* 503-1000 11'-11" 22'-5" 19'-10" **

NC8312* 626-1274 13'-11" 22'-5" 19'-10" **

*Two-story modular cells

**Some models in this box size require a taller fan cylinder