Bulletin 313A
Thermal Performance 27 to 1348 Nominal Tons
®
The new & improved EVAPCO Model LSTB and LPT forced
draft centrifugal cooling towers now feature IBC Compliance
in addition to CTI Certification. These features reinforce
EVAPCO’s position as the leading manufacturer of forced
draft evaporative cooling equipment.
S
ince its founding in 1976, EVAPCO, Incorporated has become an industry leader in the
engineering and manufacturing of quality heat
transfer products around the world. EVAPCO’s
mission is to provide first class service and quality
products for the following markets:
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(Stainless steel available
as an affordable option)
Industrial Refrigeration
Commercial HVAC
Industrial Process
Power
EVAPCO’s powerful combination of financial
strength and technical expertise has established
the company as a recognized manufacturer of
market-leading products on a worldwide basis.
EVAPCO is also recognized for the superior
technology of their environmentally friendly
product innovations in sound reduction and
water management.
EVAPCO is an employee owned company with a
strong emphasis on research & development and
modern manufacturing plants. EVAPCO has
earned a reputation for technological innovation
and superior product quality by featuring products that are designed to offer these operating
advantages:
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G-235 Heavy Mill
Galvanized Steel
Construction
Higher System Efficiency
Environmentally Friendly
Lower Annual Operating Costs
Reliable, Simple Operation and
Maintenance
Double-Brake
Flange Joints
• Stronger than singlebrake designs by others.
• Increases field rigging
joint integrity.
• Greater structural
integrity.
Stainless Steel
Strainer
• Resists corrosion
better than
other materials.
With an ongoing commitment to Research & Development programs, EVAPCO provides the most
advanced products in the industry– Technology
for the Future, Available Today!
Totally Enclosed Fan Motors
& Superior Drive System
IBC Compliant Construction
EVAPCO products are manufactured in 17 locations in 8 countries around the world and supplied through a sales network consisting of over
170 offices.
2
©2009 EVAPCO, Inc.
• Standard unit construction built
to withstand 1.0 g seismic load
and 60 psf wind load.
• Upgraded unit construction built
to withstand 5.12 g seismic load
and 145 psf wind load.
• Assures long life.
• Located in dry, incoming air-stream,
allowing normal maintenance to be
done from the outside of the unit.
• If required, motor can be
easily removed.
• One piece fan shaft.
®
Design and Construction Features
PVC Spray Distribution Header
Efficient Drift Eliminators
• Advanced design limits maximum drift rate
to 0.001% of the recirculated water rate.
• Corrosion resistant PVC for long life.
• Nozzles are threaded into the header to ensure
proper orientation.
• Fixed position nozzles require little maintenance.
• Large orifice nozzle with integral sludge ring to
prevent clogging.
• Treaded end-caps on distribution piping for ease
of cleaning.
Efficient Drift
Eliminators
• Advanced design limits
maximum drift rate to
0.001% of the recirculated water rate.
• Corrosion resistant
PVC for long life.
Exclusive EVAPAK® fill
• Provides the most efficient thermal
performance per plan area.
• Suitable for use as a working platform.
LPT
†
CTI Certified
LSTB
Easy to Service Motor & Drive System
Standard Stainless Steel
Cold Water Basin
G-235 Heavy Mill
Galvanized Steel
Construction
• Eliminates the need for
unreliable epoxy coatings.
(Stainless steel available
as an affordable option)
• Belt tensioning and bearing lubrication can
be performed from outside the unit.
• Locking mechanism can also be used as a
wrench to adjust the belt tension.
• Motor is fully accessible by removing one
inlet screen.
• Split fan housings allow removal of all
mechanical equipment through the end
of the unit (LPT only).
IBC Compliant Construction
• Standard unit construction built to withstand
1.0 g seismic load and 60 psf wind load.
• Upgraded unit construction built to withstand
5.12 g seismic load and 145 psf wind load.
† Mark owned by the Cooling Technology Institute
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IBC COMPLIANCE
In its continuing commitment to be the leaders in evaporative cooling equipment design and services,
EVAPCO LSTB and LPT Cooling Towers are now Independently Certified to withstand Seismic and
Wind Loads in ALL Geographic Locations and Installations in accordance with IBC 2006.
What is IBC?
mately equal to 145 psf velocity pressure. Therefore,
the upgraded structural design package option for
the New LSTB and LPT are designed for 5.12 g and
145 psf making it applicable to ALL building locations in North America.
International Building Code
The International Building Code (IBC) is a comprehensive
set of regulations addressing both the structural design
and the installation requirements for building systems –
including HVAC and industrial refrigeration equipment.
The IBC is intended to replace BOCA’s The National Building Code, ICBO’s Uniform Building Code and SBCCI’s Standard Building Code.
Seismic Design
The chart shown below, from the US Geological Survey
Website http://www.usgs.gov/ shows the potential seismic activity in the United States. Buildings constructed in
the red, orange and yellow areas of the map are most
likely to require the upgraded LSTB and LPT construction
design based on the site seismic design factors. Critical
use facilities, such as hospitals, are also more likely to require the upgraded design.
Compared to previous building codes that considered
only the building structure and component anchorage,
the requirements contained within the IBC address anchorage, structural integrity, and the operational capability of a component following either a seismic or wind
load event. Simply stated, the IBC code provisions require that evaporative cooling equipment, and all
other components permanently installed on a
structure, must be designed to meet the same seismic or wind load forces as the building to which
they are attached.
Highest Hazard
How Does IBC 2006 Apply to Cooling
Towers?
%g
Based on the project zip code and site design factors, calculations are made to determine the equivalent seismic
“g force” and wind load (in pounds per square foot – psf)
on the unit. The cooling tower must be designed to withstand the greater of either the seismic or wind load.
32+
24-32
16-24
8-16
4-8
2-4
0-2
Lowest Hazard
Map courtesy US Geological Survey website
The project architect or civil engineer is responsible for
determining the seismic design factors to be used for the
building design. A mechanical consulting engineer and/or
design build contractor will then apply these factors to a
series of charts and graphs to determine the appropriate
seismic design factors based on the location of the installation and ultimately the “importance” of the facility.
The specific factors necessary for seismic design as well as
a sample seismic calculation are shown on page 6.
The New LSTB and LPT are offered with a choice of
TWO structural design packages:
• Standard Structural Design – For projects with
<
– 1.0g seismic or 60 psf wind loads
• Upgraded Structural Design – Required for
projects with >1.0 g seismic or 145 psf wind loads
All locations with design criteria resulting in a seismic
design force of up to 1.0g or a wind load of 60 psf or
below will be provided with the standard LSTB and LPT
structural design. An upgraded structural design is
available for installations with design criteria resulting
in “g forces” greater than 1.0g. The highest “g force”
location in North America is 5.12g. The highest wind
load shown on the maps is 170 mph, which is approxi-
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TECHNOLOGY
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Wind Design
The IBC 2006 code book includes a map of basic wind
speed (3-second gust) by contour lines. However, local
regulations may be more stringent than these published
speeds. The specific factors necessary for wind load as
well as a sample wind load calculation are shown on
Page 7.
Certificate of Compliance
LSTB, LPT Cooling Towers
LSW(A/B), LRW(B) Closed Circuit Coolers
PMC-E, LSCB and LRC Evaporative Condensers
Are certified to meet or exceed the Seismic and Wind Load Provisions
set forth in the applicable building codes for this project.
These products have been manufactured following all
applicable quality assurance programs.
Applicable Building Codes:
IBC 2006
ASCE-7
NFPA 5000
Whichever design force - seismic or wind - is more severe
for the building, governs the design of the building and
all attached equipment.
Referenced Report:
VMA-43387
Approval Agency:
VMC Seismic Consulting Group
EVAPCO...Specialists in Heat Transfer Products and Services.
FD IBC COC 001
If the seismic “g force” or wind load psf requirements for
the project site are known, EVAPCO’s online equipment
selection software, iES, will allow you to choose the required structural design package – either standard construction or upgraded construction.
If the project requirements are unknown, the following
calculations must be completed.
When using the EVAPCO selection software to make a
selection, these calculations are already incorporated
into the selection process. Simply enter the required
factors and the Seismic Design Force and Wind Load
will be calculated automatically!!
Wind Load Map Courtesy IBC 2006 Text –
See full-sized map for location specific values
For further questions regarding IBC compliance, please
contact your local EVAPCO Representative or visit
www.evapco.com.
Design Implementation
EVAPCO applies the seismic design and wind load information provided for the project to determine the equipment design necessary to meet IBC requirements. This
process ensures that the mechanical equipment and its
components are compliant per the provisions of the IBC
as given in the plans and specifications for the project.
Seismic Load Calculations
The data required to calculate the seismic load are:
Occupancy Category – I, II, III or IV depending on the
nature of the building occupancy. Table 1604.5 in the IBC
2006 Code Book defines each of the four categories in detail. In summary the four categories are:
Independent Certification
Although the IBC references and is based on the structural building code ASCE 7, many chapters and paragraphs of ASCE 7 are superceded by the IBC, independent
certification and methods of analysis are such paragraphs.
Per the most recent edition of the code, the EVAPCO
compliance process included an exhaustive analysis by an
independent approval agency. As required by the International Building Code, EVAPCO supplies a certificate of
compliance as part of its submittal documents. The certificate of compliance demonstrates that the equipment has
been independently tested and analyzed in accordance
with the IBC seismic and wind load requirements. Evapco
has worked closely with an independent approval agency
to complete the equipment testing and analysis.
• Category I - structures that represent a low hazard to
human life in the event of a failure.
• Category III - structures that represent a substantial
hazard to human life in the event of a failure.
• Category IV - structures designated as essential
facilities.
• Category II - any structures not listed in I, III or IV.
Site Classification – A, B, C, D, E or F based on the types
of soil and their engineering properties. Table 1613.5.2 in
the IBC 2006 Code Book defines each of the categories in
detail. IBC specifies site class “D” when soil properties are
unknown.
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Maximum Spectral Response Acceleration (Ss) – Numerical value found using the U.S. Geological (USGS) data
based on the Zip Code of the project. This data point can
be determined using the Ground Motion Parameter Calculator at http://www.usgs.gov/. Note the calculator assumes a site classification of B for the 0.2 second
maximum Ss. The site coefficient (Fa), defined below, will
correct for the actual site classification.
Seismic Load Sample Calculation
The following example demonstrates the procedure for
determining which structural design package a Community Hospital located in Charleston, SC (zip code 29401)
would require under the latest version of IBC. In this example, the cooling tower will be installed on a roof, approximately 60 feet above grade. The unit will also be
installed with a vibration isolation system.
Site Coefficient (Fa) – Values ranging from 0.8 to 2.5 determined based on the Ss and the Site Classification. Table
1613.5.3(1) in the IBC 2006 Code Book defines these values.
Step 1: Calculate the Design Spectral Response Acceleration (SDS)
Design Spectral Response Acceleration (SDS) – A calculated value using the values for Ss and Fa.
SDS =
SDS =
2
(F )(S )
3 a s
2
(F )(S ) = 2 (1.0)(1.495)=0.9966
3 a s 3
Where:
Amplification Factor (ap) – 2.5 for flexible components
or flexibly attached components. Due to its low inherent
natural frequencies, most evaporative cooling equipment
falls under the definition of flexible. Therefore the default for Cooling Towers is 2.5. See Table 13.6-1 in the
American Society of Civil Engineers (ASCE) Standard 7-05,
to which IBC often references, for more information.
SS
= 1.495; using the USGS Ground Motion Parameter
Calculator
Fa
= 1.0; from Table 1613.5.3(1) in the IBC 2006 Code
Book assuming a Site Classification of D
Step 2: Calculate the Seismic Design Force (Fp )
FP
Response Modification Factor (Rp) – 2.5 for non-isolated evaporative cooling equipment. 2.0 for vibration
isolated evaporative cooling equipment. Table 13-6.1 of
ASCE 7-05 provides additional information.
=
0.4 (aP)(SDS)(WP)
z
1+2
h
RP
IP
(
)
(
)
=
0.4 (2.5)(0.9966)(1)
(1+2(1))=2.24g
2.0
1.5
(
)
Where:
ap
Component Operating Weight (Wp) – This weight term
has been removed from the equation below, because
EVAPCO is expressing the force in terms of g’s and not lbs.
= 2.5; the default for cooling towers
SDS = 0.9966; as calculated in Step 1
Wp = 1.0; the default for cooling towers
Rp
Importance Factor (Ip) – 1.5 for Occupancy Category IV,
life safety components required to function after a seismic event or component containing hazardous content.
1.0 for all other components. ASCE 7-05 Section 13.1.3
provides additional detail on importance factors.
= 2.0; the default for isolated equipment
Ip = 1.5; the default for life safety components
z/h = 1.0; the default for units on a rooftop
In order to meet Code requirements, the unit and its anchorage must be constructed to withstand 2.24 g. This
will require that the upgraded structure option be chosen
to meet the seismic requirements of this project. Because
the seismic load requires the upgraded structural design,
the wind load calculation results will not change the design and are not required for this analysis.
Installation Location (Z/h) – 0 for units installed at
ground level. 1.0 for units installed on a rooftop. Per
ASCE 7-05 Section 13.3, z = the height of the point of attachment of the component and h = the relative roof
height.
Seismic Design Force, (Fp) – “G-force” that the unit
must be able to withstand. This number is calculated
using the factors described above. The New LSTB and LPT
are offered with a choice of two structural design packages, consisting of:
– Standard Structural Design ≤ 1.0g
– Upgraded Structural Design – up to 5.12g (the
maximum value for North America)
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TECHNOLOGY
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Wind Load Calculations
Wind Load Sample Calculation
The data required to calculate the wind load are:
The following example demonstrates the procedure to
determine which structural design package a Condominium Building located in Miami, FL (zip code 33101)
would require under the latest version of IBC. In this example, the cooling tower will be installed on the top of
the 60 foot tall building.
Basic Wind Speed (V) – Numerical value, in miles per
hour (mph) found in ASCE 7-05 Figures 6-1 (A,B,C).
Wind Directionality Factor (Kd) – 0.85 for building
components and cladding. Table 6-4 of ASCE 7-05 provides additional information.
Step 1: Calculate the Exposure Category Coefficient (Kz)
Occupancy Category – I, II, III or IV depending on the
nature of the building occupancy. Table 1604.5 in the IBC
2006 Code Book defines each of the categories in detail.
This is the same Occupancy Category used in Seismic calculations.
Where:
Importance Factor (I) – Numerical value between 0.77
and 1.15 based on the Basic Wind Speed and the Occupancy Category. These values are found in Table 6-1 of
ASCE 7-05.
z
= 60; Installation Height
zg
= 700; from ASCE 7-05 Table 2 using an Exposure
Category of D.
α
= 11.5; from ASCE 7-05 Table 2 using an Exposure
Category of D.
KZ
Exposure Category – B, C or D as defined in Section
6.5.6.3 of ASCE 7-05.
=
2.01
( zz ) (
g
2
a
) = 2.01
60 (
( 700
)
2
11.5
) = 1.31
Step 2: Calculate the Velocity Pressure (qz)
Component Elevation (z) – The anchorage height of
the unit in feet.
qz
Nominal Height of the Atmospheric Boundary Layer
(zg) - Numerical value based on Exposure Category. These
values are found in Table 6-2 of ASCE 7-05.
=
0.00256(Kz)(Kzt)(Kd)(V 2 )(I) =
0.00256(1.31)(1.0)(0.85)(1452 )(1.0) = 59.93psf
Where:
Kz
3 second Gust-Speed power Law Exponent (α) - Numerical value based on Exposure Category. These values
are found in Table 6-2 of ASCE 7-05.
= 1.31; as calculated above.
Kzt = 1.0; default when topographic effects are not a
factor.
Velocity Pressure Exposure Coefficient (Kz) – A calculated value using the values for zg and α.
Kd
= 0.85; default for building components and
cladding.
Topographic Factor (Kzt) – 1.0 default when topo-
V
= 145; wind speed from ASCE 7-05 Figure 6-1.
I
= 1.0; Based on an Occupancy Category of II.
KZ
=
2.01
z
zg
( )
( )
2
a
In order to meet Code requirements, the unit and its attachments must be designed and constructed to withstand 59.93 psf. This means that the standard LSTB and
LPT construction design will meet the wind load requirements of this project. Because the wind load does not require the upgraded structural design, the seismic load
calculation must also be completed to determine if the
results will change the unit design.
graphic effects are not a factor. ASCE 7-05 Section 6.5.7
provides additional detail on topographic factors.
Velocity Pressure (qz) – This number in pounds per
square foot (psf) is calculated using the factors described
above. The New LSTB and LPT are offered with a choice
of two structural design packages, consisting of:
– Standard Structural Design - up to 60 psf
– Upgraded Structural Design - up to 145 psf (the
maximum value for North America)
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D E S I G N F E AT U R E S
Application Versatility
Low Installed Costs
Centrifugal fan units are recommended for a wide
range of installations. They are excellent for larger installations where very quiet operation is a must, such
as residential neighborhoods. In addition, centrifugal
fan units can operate against the static pressure loss
of ductwork and are ideal for indoor installations.
The LSTB forced draft cooling tower is designed using
a modular concept to minimize rigging, piping and
support costs. All major components are factory assembled into complete sections. Fans, shafts, bearings
and drives are
installed and
aligned at the
factory as an integral part of
the pan section
to eliminate the
necessity of field
rigging these
key parts.
Very Quiet Operation
Centrifugal fan units provide an inherently low noise
characteristic which makes this design preferred for
most installations that require low sound levels. The
sound they produce is predominantly in the high frequencies which is easily attenuated by building walls,
windows, and natural barriers. Additionally, since the
sound from the fans is directional, single sided air
entry models can be turned away from critical areas
avoiding a sound problem. When even quieter operation is necessary, centrifugal fan models can be
equipped with optional sound attenuation packages.
Consult the factory for details.
Indoor Installation
Centrifugal cooling towers
can be installed indoors
when it is desirable to hide
the unit or when it is the
only space available. In addition to being quiet, they
can handle the external
static pressure of ductwork
by using the next larger size
LSTB Example
fan motor. Drawings are
available showing how to make ductwork connections.
LPT Ships Factory Assembled
The compact, unitary design of the LPT Cooling Tower
allows them to be shipped completely assembled. This
results in lower transportation costs and no assembly
requirements at the job site. Only one lift is required
to rig the LPT. Note: Options such as attenuation and
discharge hoods will require additional lifts.
Blow-Thru Construction
All moving parts of Forced
Draft Towers-fans, motors,
bearing, drives, and belts,
are in the the dry entering
air stream. This design feature reduces corrosion and
maintenance problems in
these vital areas.
LSTB Example
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Fan Motors
Centrifugal Fan Assembly
All LSTB and LPT models utilize heavy duty totally
enclosed fan motors (T.E.F.C.) designed specifically
for cooling tower applications. In addition, EVAPCO
offers many optional motors to meet your specific
needs, including:
Fans on the LSTB and LPT models are of the forward
curved centrifugal type with hot-dip galvanized steel
construction. All fans are statically and dynamically
balanced and mounted in a hot-dip galvanized steel
housing designed and manufactured by EVAPCO.
I
Premium Efficiency Motors
Multi-Speed Motors
I Inverter-Duty Motors for VFD Applications
I
Fan Motor Location
EVAPCO mounts the fan motor in a convenient open
area to make it easy to adjust belt tension, access the
motor, electrically connect it, or change the motor if
necessary. The fan motor and drive are under a protective cover for safety purposes and to protect them
from the elements.
CENTRIFUGAL WHEEL
Forged Bearing Journal
The fan shafts used on all LSTB and LPT models are
standard with forged bearing journals, eliminating
the two-piece fan shaft with welded end journals,
which is susceptible to rusting and eventual failure.
The solid forged design of the LSTB fan shaft provides durable long-lasting operation, free from premature mechanical failure. The LPT uses a ground
and polished steel fan shaft, similar to what is used
on EVAPCO’s Induced Draft Cooling Towers.
LSTB Motor Mount
LPT Motor Mount
LSTB Fan Shaft
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Inverter Duty Motors
Efficient Drift Eliminators
EVAPCO recommends the use of Inverter Duty Motors
when Variable Frequency Drives are utilized for capacity control. Inverter Duty Motors are available as
an option.
An extremely efficient drift eliminator system is standard on the LSTB and LPT Cooling Tower. The system
removes entrained water droplets from the air stream
to limit the drift rate to less than 0.001% of the recirculating water rate. The LSTB and LPT can be located
in areas where minimum water carryover is critical,
such as parking lots.
Two Speed Motors
For those installations requiring close control, two
speed 1800/900 RPM motors are an excellent method
of capacity control. This arrangement gives capacity
steps of 10% (fans off), 60% (fans halfspeed) and
100%. A temperature controller can be supplied to
set control steps at 5°, so fairly close temperature control can be maintained without excessive cycling of
the fan motor.
The drift eliminators are constructed of an inert
polyvinyl chloride (PVC) plastic material which effectively eliminates corrosion of these vital components.
They are assembled in sections to facilitate easy removal for inspection of the water distribution system.
Two-speed motors also save operating costs. At halfspeed, the motor draws less than 15% of full load
power. Since maximum wet bulb and maximum load
very seldom coincide, the cooling tower will actually
operate at half-speed as much as 80% of the time.
Thus, power costs will be reduced by approximately
85% during the major portion of the operating season.
A third advantage of two-speed motors is that noise
levels are reduced by 6 to 8 dB when operating at halfspeed. Since both the load and the wet bulb are normally lower at night, the tower will operate at low
speed and the noise level will be substantially reduced
during this noise sensitive period.
ELIMINATOR
US Patent No. 6315804B1
Stainless Steel Strainers
Caution – The water circulation pump must be
interlocked with the fan motor starter(s) to insure water flow over the tower fill during fan
operation.
One other component of evaporative cooling equipment which is subject to excessive wear is the suction
strainer. EVAPCO provides a Type 304 stainless
steel strainer on all units (except remote sump
applications) as standard. Strainers are positioned around a large anti-vortex hood in easily
handled sections.
Accessibility
The pan/fan section of a centrifugal fan unit is designed for accessibility and maintenance. Fan and
drive components are positioned to allow easy adjustment and cleaning. All grease fittings are in convenient locations for periodic lubrication. Large circular
access doors are provided on each section to allow
entry into the pan. All float valve and strainer assemblies are located near the door for easy adjustment
and cleaning. The pan sump is designed to catch the
dirt accumulated and can be flushed out with a hose.
STRAINER
U.S. Patent No. 4,500,330
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EVAPCOAT:
EVAPAK® Cooling Tower Fill
G-235 Hot-Dip Galvanized Steel
The patented* EVAPAK® fill design used in the forced
draft cooling tower line is the culmination of thousands of hours of research and testing conducted by
EVAPCO’s research engineers. This program has produced a cooling tower fill with superior heat transfer,
reduced channeling in flow passages, improved drip
enhancement for lower air side pressure drop and exceptional structural strength.
Construction
The standard material of construction for evaporative
cooling equipment for many years has been hot-dip
galvanized steel. The purpose of galvanizing is to
protect the base metal from corrosion, and the thickness of the galvanized layer directly affects the equipment life.
The fill is specially designed to induce highly turbulent
mixing of the air and water for heat transfer. This is
made possible by forming the raw fill into corrugated
panels on which there are small ridges. These ridges
serve many purposes, one of which is to create agitation in both the water and the air in the tower. This
increase in turbulence prevents channeling of the
water and promotes better mixing of air and water,
therefore improving heat transfer. In addition, special
drainage tips allow high water loadings without excessive pressure drop.
EVAPCO has been instrumental in the development of
corrosion protection technology and was the first
manufacturer to use G-235 galvanized steel construction. The G-235 designation equates to a minimum of
2.35 ounces of zinc per square foot of surface area.
The EVAPCOAT Corrosion Protection System is
the heaviest galvanized coating available for extended corrosion protection eliminating the
need for costly, unreliable epoxy paint finishes.
The fill is constructed of inert polyvinyl chloride, (PVC).
It will not rot or decay and is formulated to withstand
water temperatures of 130°F. The fill also has excellent fire resistant qualities providing a flame spread
rating of 5 per ASTM-E84-81a. (The flame spread rating scale ranges from 0 for non-combustible to 100 for
highly combustible). Because of the unique way in
which the crossfluted sheets are bonded together, the
structural integrity of the fill is greatly enhanced, making the fill usable as a working platform.
Stainless Steel Material Options
The EVAPCOAT Corrosion Protection System is satisfactory for most applications. If additional corrosion protection is required the following stainless steel options
are available. Please contact your local EVAPCO representative for pricing.
I
Stainless Steel Cold Water Basins–
(Standard on LPT Models)
I
Stainless Steel Water Touch Basin
I
Stainless Steel Water Touch Units
I
All Stainless Steel Units
A high temperature fill is available for water
temperatures exceeding 130°F. Consult your
EVAPCO representative for further details.
EVAPAK® FILL
*U.S. Patent No. 5,124,087
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OPTIONAL EQUIPMENT
Pan Freeze Protection
Steam or Hot Water Coils
Whenever a cooling tower is idle during subfreezing
weather, the water in the sump must be protected
from freezing and damaging the pan. The simplest
and most reliable method of accomplishing this is with
a remote sump tank located in a heated space in the
building under the tower. With this system, the water
in the tower drains to the indoor tank whenever the
pump is shut-off. When a tower is ordered for remote
sump operation, the standard float valve and strainer
are omitted, and the unit is provided with an oversized water outlet connection. When a remote sump is
not possible, a supplementary means of heating the
pan water must be provided.
Pan coils are available as an alternate to the electric
heaters described above. Constructed of galvanized
pipe installed the cooling tower basin, they are
supplied less controls and are ready for piping to an
external steam or hot water source. Pan water heater
controls should be interlocked with the water
circulating pump to prevent their operation when
the pump is energized.
Electric Water Level Control
EVAPCO LPT and LSTB Cooling Towers are available
with an optional electric water level control system in
place of the standard mechanical make-up valve and
float assembly. This package provides accurate control
of the pan water level and does not require field
adjustment, even under widely variable operating
conditions.
Electric Heaters
Electric immersion heaters are available factory
installed in the basin of the tower. They are sized to
maintain a +40°F pan water temperature at 0°F ambient with the fans off. They are furnished with a thermostat and low water cut off, to cycle the heater on
when required and to prevent the heater elements
from energizing unless they
are completely submerged.
All components are
enclosed in rugged,
weather proof enclosures for outdoor
use. Heater control
packages that include
transformer(s), contactor(s), and disconnect(s) are available as an option. Contact your local
EVAPCO representative for further details.
Electric Pan Heaters
Model Number
LPT 316 to 366
LPT 516 to 596
LPT 519 to 569
LPT 5112 to 5712
LPT 819 to 879
LPT 8112 to 8812
LSTB 5112 to 5512
LSTB 5118 to 5718
LSTB 8P112 to 8P512
LSTB 8P118 to 8P618
LSTB 8P124 to 8P524
LSTB 8P136 to 8P536
LSTB 10112 to 10612
LSTB 10118 to 10718
LSTB 10124 to 10524
LSTB 10136 to 10636
The controller was designed by EVAPCO and consists
of multiple heavy duty stainless steel electrodes.
These electrodes are mounted external to the unit in
a vertical standpipe. For winter operation, the
standpipe must wrapped with electric heating cable
and insulated to protect it from freezing. The weather
protected slow closing solenoid valve for the makeup
water connection is factory supplied and is ready for
piping to a water supply with a pressure between 5
psi (minimum) and 125 psi (maximum).
Other Options Available:
Pony Motors
Ladders
Inverter Duty and 2 Speed Motors
Stainless Steel Material Options
Steam Injectors
Stainless Steel Fan Shafts
Tapered Discharge Hoods
Solid Bottom Panels for Ducted Applications
kW
(1) 2
(1) 3
(1) 4
(1) 6
(1) 7
(1) 9
(1) 4
(2) 3
(1) 5
(2) 4
(2) 5
(2) 7
(1) 7
(2) 5
(2) 7
(2) 10
12
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
A P P L I C AT I O N S
Structural Steel Support
Design
The recommended method of support for the LSTB
and LPT cooling towers are two structural “I” beams
located under the outer flanges and running the entire length of the unit. Mounting holes 3/4” in diameter, are located at the bottom channels of the pan
section to provide for bolting to the structural steel.
Refer to certified drawings from the factory for bolt
hole locations.
EVAPCO LSTB & LPT Cooling Towers have heavy-duty
construction and are designed for long, trouble-free
operation. However, proper equipment selection, installation and maintenance are necessary to insure
good unit performance. Some of the major considerations in the application of a cooling tower are presented below. For additional information, please
contact the factory.
Note:
1) Beams should be level before setting the unit in place.
Air Circulation
In reviewing the system design and unit location, it is
important that enough fresh air is provided to enable
proper unit performance. The best location is on a unobstructed roof top or at ground level away from
walls and other barriers. Care must be taken when locating towers in wells or enclosures or next to high
walls. The potential for recirculation of the hot, moist
discharge air back into the fan intake exists. Recirculation raises the wetbulb temperature of the entering
air, causing the leaving water temperature to rise
above the design. For these cases, a discharge hood or
ductwork should be provided to raise the overall unit
height even with the adjacent wall, thereby reducing
the chance of recirculation. For additional information, see the EVAPCO Equipment Layout Manual. Engineering Assistance is also available from the factory to
identify potential recirculation problems and recommend solutions.
2) Do not level the unit by shimming between it and
the “I” beams as this will not provide proper longitudinal support.
3) Beams should be sized in accordance with accepted
structural practices. Support beams and anchor
bolts are to be furnished by others.
Indoor Installation
All LSTB and LPT Cooling Towers can be installed indoors where they normally require ductwork to and
from the unit. The design of the ductwork should be
symmetrical to provide even air distribution across
both intake and discharge openings. Guidelines for
Ducted Applications:
1) The static pressure loss imposed by the ductwork
must not exceed 1/2”. The fan motor size must be
increased for ESP up to 1/2”.
Sound Attenuation
2) For ducted installations, the solid bottom panel option must be ordered. For the LPT units, blank off
plates will also be provided in lieu of the side air
inlet screens with this option.
The centrifugal fan design of the LSTB & LPT models
operate at lower sound levels which make these units
well suited for sound sensitive applications. For extremely sound sensitive applications, the LSTB & LPT
models may be supplied with inlet and/or discharge attenuation. EVAPCO offers Inlet and/or Discharge
Attenuation packages with CTI CERTIFIED PERFORMANCE!
3) Important, Access Doors must be located in the
ductwork for service to the fan drive components
and water distribution system.
Drawings are available showing recommended ductwork connections. See EVAPCO’s Layout Guidelines
for additional information.
Discharge Attenuation quiets sound radiating from
the top of the unit and features a straight sided design
with insulated walls acoustically lined with high density fiberglass.
Inlet Attenuation reduces sound radiated through
the tower air intakes and consists of acoustically lined
baffles to change the path of the air entry and capture
the radiated noise.
13
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
OPTIONAL EQUIPMENT FOR
L O W S O U N D A P P L I C AT I O N S
Sound Attenuation Packages
LPT: The standard LPT is the quietest, low profile centrifugal fan cooling tower in the industry. This is achieved
by providing the first stage of inlet sound attenuation as part of the LPT ’s standard design. The LPT drive system,
including the fan housing(s), electric motors, belts, bearings and drives, is completely enclosed by a protective
housing which covers the drive system and also provides a significant level of sound reduction.
LSTB: The centrifugal fan design of the LSTB models operate at lower sound levels, which make these units well
suited for sound sensitive applications.
If the standard LSTB and LPT sound pressure level is not quiet enough for certain applications, the sound levels
can be further reduced by adding various stages of sound attenuation. Consult the factory for Factory Certified
Sound Data for each option. Please refer to Evapco’s selection software for correct model number designation
and CTI Certified performance.
Straight Sided
Discharge Attenuation
(Available on LSTB & LPT)
Inlet Attenuation
Reduces sound radiated through the end
and side air intakes. It consists of baffled
panels to change the path of the air entry
and to capture the radiated noise thus reducing the overall sound levels generated.
In addition, the external belt adjustment
mechanism is extended through the inlet
attenuator to allow easy belt adjustment
without having to enter the unit.
†
Fan Side
Inlet Attenuation
(Available on LSTB & LPT)
Drift Eliminator and
Water Distribution
Access Panel
Discharge Attenuation
The discharge attenuation hood features a
straight sided design with insulated baffles
to reduce the overall sound levels of the
discharge air. The discharge attenuation
incorporates a large access panel to allow
entry to the drift eliminators and water
distribution system. If a higher discharge
velocity is required with minimal sound
attenuation, a tapered discharge hood is
available.
Motor and Drive
Access Panel
Fan Side
Inlet Attenuation
(LPT Only)
Example of Sound Attenuation on an LPT Model
† Mark Owned by the Cooling Technology Institute.
14
TECHNOLOGY
FOR
F U T U R E , AV A I L A B L E T O D AY !
THE
D ISCHARGE & I NTAKE ATTENUATION D IMENSIONS
LSTB Discharge Attenuation Dimensions*
Unit
Footprint
H1
(in.)
L1
(in.)
W1
(in.)
4' x 6'
4' x 9'
4' x 12'
4' x 18'
5' x 12'
5' x 18'
8P' x 12'
8P' x 18'
8P' x 24'
8P' x 36'
10' x 12'
10' x 18'
10' x 24'
10' x 36'
48-7/8
48-7/8
48-7/8
48-7/8
48-7/8
48-7/8
73-1/4
73-1/4
73-1/4
73-1/4
73-1/4
73-1/4
73-1/4
73-1/4
71-5/8
106-3/8
143-1/8
215-5/8
142-3/4
215-1/4
142-3/4
215-1/4
142-3/4
215-1/4
142-3/4
215-1/4
142-3/4
215-1/4
45-5/8
45-5/8
45-5/8
45-5/8
62-1/8
62-1/8
93-7/8
93-7/8
93-7/8
93-7/8
117-5/8
117-5/8
117-5/8
117-5/8
LSTB Intake Attenuation Dimensions*
Weight per Number
Hood (lbs.) of Hoods
567
743
999
1,368
1,215
1,661
2,291
3,121
2,291
3,121
2,715
3,682
2,715
3,682
1
1
1
1
1
1
1
1
2
2
1
1
2
2
Unit
Footprint
H2
(in.)
L2
(in.)
W2
(in.)
4' x 6'
4' x 9'
4' x 12'
4' x 18'
5' x 12'
5' x 18'
8P' x 12'
8P' x 18'
8P' x 24'
8P' x 36'
10' x 12'
10' x 18'
10' x 24'
10' x 36'
38
38
38
38
44-1/2
44-1/2
79-3/4
79-3/4
79-3/4
79-3/4
87-1/4
87-1/4
87-1/4
87-1/4
70-7/8
107-1/4
143-1/2
216
143-1/2
216
143-5/8
216
143-5/8
216
143-3/4
216-1/4
143-3/4
216-1/4
71
71
71
71
71
71
71
71
71
71
71
71
71
71
Weight per Number of
Hood (lbs.) Attenuators
853
1198
1529
2233
1654
2406
2239
3204
2239
3204
2323
3393
2323
3393
1
1
1
1
1
1
1
1
2
2
1
1
2
2
* Attenuation dimensions may vary slightly from catalog. See Factory certified prints for exact dimensions.
L1
W1
DISCHARGE
ATTENUATION
ACCESS DOOR
ACCESS DOOR
LIFTING
DEVICES
H1
LIFTING
DEVICES
INTAKE
ATTENUATION
AIR
INTAKE
SIDE
ACCESS
DOOR
H2
W2
L2
LSTB Attenuation
15
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
D ISCHARGE & I NTAKE ATTENUATION D IMENSIONS
LPT Discharge Attenuation Dimensions*
Fill Section
Footprint
H1
(in.)
L1
(in.)
W1
(in.)
3' x 6'
5' x 6'
5' x 9'
5' x 12'
8' x 9'
8' x 12'
43-3/8
43-3/8
55-3/8
55-3/8
55-3/8
55-3/8
71-3/4
71-1/4
107-1/4
143-5/8
107-1/4
143-5/8
40-1/2
60-5/8
60-5/8
60-5/8
94
94
LPT Fan End Attenuation Dimensions*
Weight per Number
Hood (lbs.) of Hoods
670
850
1,170
1,990
1,570
2,030
Fill Section
Footprint
H2
(in.)
L2
(in.)
W2
(in.)
3' x 6'
5' x 6'
5' x 9'
5' x 12'
8' x 9'
8' x 12'
63-7/8
79-5/8
79-5/8
79-5/8
79-5/8
79-5/8
40-1/2
60-5/8
60-5/8
60-5/8
94-1/4
94-1/4
43-5/8
43-1/2
43-1/2
43-1/2
43-5/8
43-5/8
1
1
1
1
1
1
Weight per Number of
Hood (lbs.) Attenuators
810
1280
1280
1280
1530
1530
1
1
1
1
1
1
LPT Fan Side Attenuation Dimensions*
Fill Section
Footprint
H3
(in.)
L3
(in.)
W3
(in.)
3' x 6'
5' x 6'
5' x 9'
5' x 12'
8' x 9'
8' x 12'
33-5/8
36-7/8
36-7/8
36-7/8
42-3/8
42-3/8
64-3/4
84-7/8
84-7/8
84-7/8
118-1/2
118-1/2
34-3/4
54
54
54
44-1/8
44-1/8
Weight per Number of
Hood (lbs.) Attenuators
60
60
60
60
60
60
2
2
2
2
2
2
* Attenuation dimensions may vary slightly from catalog. See Factory certified prints for exact dimensions.
DISCHARGE
ATTENUATOR
L1
W1
H1
ACCESS
DOOR
INTAKE
ATTENUATOR
LIFTING DEVICES
W3
H3
H2
END VIEW
28-1/2
SIDE VIEW
12-1/8
W2
L2
L3
END VIEW
LPT Attenuation
16
12-1/8
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
OPTIONAL EQUIPMENT
Electric Water Level Control
Screened Bottom Panels
Cooling Towers may be
ordered with an electric
water level control in lieu
of the standard mechanical
float and make-up assembly. This package provides
accurate control of water
levels and does not require
field adjustment.
Protective inlet screens are provided on the sides and/or
end of the unit’s air intake. Screens are not provided
below the fan section since most units are mounted
on the roof or at ground level. It is recommended that
bottom screens be added to the unit when it will be
elevated. These screens can be provided by the factory at
an additional cost or added by the installing contractor.
Solid Bottom Panels for Ducted Installations
When centrifugal fan units are installed indoors and
intake air is ducted to the unit, a solid bottom panel is
required to completely enclose the fan section and
prevent the unit from drawing air from the room into
the fan intakes. When this option is ordered, air inlet
screens are omitted.
Self Supporting Service Platform
Some LSTB Cooling Towers are available with self-supporting service platforms that include access ladders
which are designed for easy field installation. This option offers significant savings in comparison to field
constructed, externally supported catwalks. The
EVAPCO service platform option may be installed on
either side, or the end opposite the connections.
STEEL SUPPORT
Steel Support
LSTB Dimensions
The recommended support for EVAPCO LSTB/LPT is structural “I” beams located under the outer flanges and running the entire length of the unit. Mounting holes 3/4”
in diameter are located in the bottom chanels of the pan
section to provide for bolting to the structural steel.
(Refer to certified drawings from the factory for bolt
hole locations.)
Beams should be level to within 1/360 of unit length, not
to exceed 1/2” before setting the unit in place. Do not
level the unit by shimming between it and the “I” beams
as this will not provide proper longitudinal support.
A
Unit Footprint
A1
A2
(Unit Only)
(Unit with Intake Atten.)
B
4' x 6'
4' x 9'
4' x 12'
4' x 18'
5' x 12'
5' x 18'
8P' x 12'
8P' x 18'
8P' x 24'
8P' x 36'
10' x 12'
10' x 18'
10' x 24'
10' x 36'
5' 11-7/8"
8' 11-1/4"
11' 11-1/2"
18' 0"
11' 11-1/2"
18' 1/8"
11' 11-3/4"
18' 0"
24' 1"
36' 2-1/4"
11' 11-5/8"
18' 1/4"
24' 3/4"
36' 1-7/8"
9' 11-5/8"
9' 11-5/8"
9' 11-5/8"
9' 11-5/8"
11' 4-1/2"
11' 4-1/2"
13' 9"
13' 9"
13' 9"
13' 9"
15' 8-3/4"
15' 8-3/4"
15' 8-3/4"
15' 8-3/4"
4' 5/8"
4' 5/8"
4' 5/8"
4' 5/8"
5' 5-3/8"
5' 5-3/8"
7' 10"
7' 10"
7' 10"
7' 10"
9' 9-3/4"
9' 9-3/4"
9' 9-3/4"
9' 9-3/4"
3' to 10' WIDE MODELS
LPT Dimensions
Plan View
B
3' to 10' WIDE
MODELS
End Elevation
17
Fill Section
Footprint
A1
A2
(Unit Only)
(Unit with Intake Atten.)
B
3' x 6'
5' x 6'
5' x 9'
5' x 12'
8' x 9'
8' x 12'
10' 1-7/8"
12' 2-7/8"
15' 2-1/4"
18' 2-5/8"
15' 2-1/4"
18' 2-5/8"
13' 9-5/8"
15' 10-5/8"
18' 10"
21' 10-3/8"
18' 10"
21' 10-3/8"
3' 4-1/2"
5' 5/8"
5' 5/8"
5' 5/8"
7' 10"
7' 10"
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
A P P L I C AT I O N S
Piping
Bleed-off
Cooling tower piping should be designed and installed
in accordance with generally accepted engineering
practices. All piping should be anchored by properly
designed hangars and supports with allowance made
for possible expansion and contraction. No external
loads should be placed upon cooling tower connections, nor should any of the piping supports be anchored to the unit framework.
A bleed line should be installed in the piping, external
to the unit. The bleed line must be properly sized for
the application, and provided with a metering connection and globe valve. The recommended bleed off for
a cooling tower is 3 gpm per 100 tons of cooling. If the
make-up water supplying the unit is relatively free of
impurities, it may be possible to reduce the amount of
bleed, but the unit must be inspected frequently to
make sure scale is not forming. Make-up water pressure must be maintained between 20 and 50 psi for
proper operation of the standard float valve.
Capacity Control
The design wetbulb for which the tower is sized occurs only a small percentage of the time. Unless colder
water temperatures are beneficial to the process
being cooled, some form of capacity control will be
needed. A common control practice is to cycle the
fans off when leaving water is below the minimum allowable temperature. However, this does not provide
close control of the leaving water temperature and
may cycle the motor on and off more than the recommended limit of six (6) starts per hour. Another
method is to use a Variable Frequency Drive (VFD) to
control the fan speed. When a VFD is utilized,
EVAPCO recommends the use of inverter duty motors,
which are available as an option.
Water Treatment
In some cases the make-up water will be so high in
mineral content that a normal bleed-off will not prevent scaling. In this case, water treatment will be required and a reputable water treatment company
familiar with the local water conditions should be consulted. Any chemical water treatment used must be
compatible with the materials of construction of the
unit. The pH of the water should be maintained between 6.5 and 8.3. In order to prevent “white rust”,
the galvanized steel in the unit may require routine
passivation of the steel when operating in higher pH
levels. Batch chemical feeding is not recommended because it does not afford the proper degree of control.
If acid cleaning is required extreme caution must be
exercised and only inhibited acids compatible with galvanized steel construction should be used.
Another variable speed option is the use of a 2-speed
fan motor. This arrangement gives three (3) stages of
capacity control – 10% with the fans off, 60% (fans at
1/2 speed) and 100% (fans at full speed).
Variable speed motors also save operating costs. At
half-speed, the motor draws approximately 15% of full
load power. Since maximum wet bulb and maximum
load seldomly coincide on air conditioning systems, the
cooling tower will actually operate at a reduced speed
most of the time. Contact the factory for a more detailed analysis.
Control of Biological Contamination
Water quality should be checked regularly for biological contamination. If biological contamination is detected, a more aggressive water treatment and
mechanical cleaning program should be undertaken.
The water treatment program should be performed by
a qualified water treatment company. It is important
that all internal surfaces be kept clean of accumulated
dirt and sludge. In addition, the drift eliminators
should be maintained in good operating condition.
Caution: The water circulation pump must be interlocked with the fan motor starter(s) to ensure water flow over the tower fill during fan
operation.
Maintaining the Recirculated Water System
NOTE: The location of the cooling tower must be
considered during the equipment layout stages
of a project. It is important to prevent the discharge of air (potential of biological contamination) from being introduced into the fresh air
intakes of the building
The cooling in a tower is accomplished by the evaporation of a portion of the recirculated spray water. As this
water evaporates, it leaves behind its mineral content
and impurities. Therefore, it is important to bleed-off an
amount of water equal to that which is evaporated to
prevent the build up of impurities. If this is not done, the
mineral content and/or the corrosive nature of the water
will continue to increase. This will ultimately result in
heavy scaling or a corrosive condition.
18
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
N O N - C H E M I C A L W AT E R
T R E AT M E N T S Y S T E M
The LSTB and LPT are available with EVAPCO’s optional
Pulse~Pure® non-chemical water treatment system.
includes, as standard, a 1 year water treatment service
and monitoring contract provided by your EVAPCO
Representative
The Pulse~Pure® Water Treatment System utilizes
pulsed-power technology to provide CHEMICAL FREE
Water Treatment and is an environmentally responsible
alternative for treating water in evaporative cooled
equipment. It does not release harmful by-products to
the environment and eliminates costly chemicals completely from cooling tower drift and blowdown. The
Pulse~Pure® system delivers short, high-frequency
bursts of low energy electromagnetic fields to the recirculating water in the LSTB and LPT and will:
EVAPCO’s Pulse~Pure® system
offers LSTB/LPT owners a single-source
of responsibility for equipment, water
treatment and service.
• Control Bacteria to Levels Well Below Most
Chemical Water Treatment Programs.
• Control the Formation of Mineral Scale on
Heat-Exchange Surfaces.
• Save Water by Operating at Higher Cycles of
Concentration.
• Yield Corrosion Rates Equivalent to Chemical
Water Treatment.
Benefits of offering EVAPCO’s Pulse~Pure® Water
Treatment System on the new LSTB/LPT include:
• Integral Cutting Edge Conductivity Control and
Blowdown Packages that are contained in a single
feeder panel:
Conductivity Control Package – Measures Conductivity
Utilizing a Non-Fouling Torodial Probe and Features:
• One power connection of 120 volt or 460 volt is all
that is required.
• USB port for downloadable 60 day audit trail of
system operation.
• Self draining conductivity loop.
Motorized Blowdown Valve – Standard for the most
reliable operation in bleed control. Three-way valve
operation provides good bleed flow without a standing
column of water.
Because ongoing water treatment service is an absolute
requirement for any evaporative cooled system, each
purchase of a Pulse~Pure® Water Treatment System
19
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
S P E C I F I C AT I O N S
SECTION 23 65 00 – FACTORY-FABRICATED COOLING TOWERS
PART 1 – GENERAL
E. IBC Compliance: The unit structure shall be designed, analyzed, and constructed in accordance with the latest edition of the International Building Code (IBC) Regulations
for seismic loads up to _____ g or wind loads up to __ psf.
F. Collection Basin Material: Heavy Gauge G-235 Galvanized
Steel or Type 304 Stainless Steel (Optional) for long life
and durability:
1. Removable Type 304 Stainless Steel strainer with
openings smaller than nozzle orifices.
2. Joints: Bolted and sealed watertight.
3. Overflow, Makeup and Drain connections: G-235
Galvanized Steel (MPT).
4. Outlet Connection: G-235 Galvanized Steel Beveled for
weld and grooved for mechanical coupling.
G. Casing: Heavy Gauge G-235 Galvanized Steel or Type 304
Stainless Steel (Optional):
1. Casing panels shall totally encase the fill media to
protect the fill from damage due to direct
atmospheric exposure. All galvanized steel panel
edges shall be coated with a 95% pure zinc
compound during fabrication.
2. Fasteners: Corrosion resistance equal to or better than
materials being fastened.
3. Joints: Sealed watertight.
4. Welded Connections: Continuous and watertight
H. Fill Media: PVC; resistant to rot, decay and biological
attack; formed, crossfluted bonded together for strength
and durability in block format for easy removal and
replacement; suitable for use as a working surface; self
extinguishing with flame spread rating of 5 per ASTM E8481a; able to withstand continuous operating temperature
of 130ºF; and fabricated, formed and installed by the
manufacturer to ensure water breaks up into droplets.
I. Drift Eliminators: Same material as Fill. 0.001% drift rate.
J. Protective Air Inlet Screens: Galvanized Steel
K. Water Level Control: Brass mechanical makeup water
valve and plastic float with an adjustable linkage.
2.4 MOTORS AND DRIVES
A. General requirements for motors are specified in Division
23 Section “Motors”.
B. Enclosure Type: TEFC
C. Motor Speed: Single Speed (Option: VFD Duty, 2-speed)
D. Drive: Power Band Belt designed for 150% of the motor
nameplate HP.
1. Belt: V-belt type neoprene.
2. Sheaves: Aluminum alloy, taper lock design.
3. Bearings: Heavy duty, self-aligning bearings with
extended grease lines and fittings.
4. Fan Shaft: Solid steel or hollow steel with forged
bearing journals.
5. Vibration Cutout Switch: Mechanical switch to deenergize fan motors if excessive vibration in NEMA 4
enclosure.
2.5 MAINTENANCE ACCESS
A. Access Door: A circular access door shall be located above
the basin to allow for easy access to the pan interior.
B. Ladders: Aluminum, vertical complying with 29 CFR
1910.27.
2.6 SOUND ATTENUATION (OPTIONAL)
A. Inlet Attenuation: Materials to be same as basin section.
Baffled panels shall change the path of air entry and
capture radiated noise. External belt adjustment and
lubrication points shall be provided.
B. Discharge Attenuation: Straight sided discharge hood
with insulated baffles to reduce the overall sound level of
the discharge air. A large access panel to allow access to
the water distribution system and drift eliminators shall
be provided.
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract,
including General and Supplementary Conditions and
Division 1 Specification Sections, apply to this section.
1.2 SUMMARY:
A. This Section includes factory assembled and tested, open
circuit, forced draft counterflow cooling tower.
1.3 SUBMITTALS
A. General. Submit the following:
1. Certified drawings of the cooling tower, sound data,
recommended steel support indicating weight
loadings, wiring diagrams, installation instructions,
operation and maintenance instructions, and thermal
performance guarantee by the manufacturer.
1.4 QUALITY ASSURANCE
A. Verification of Performance:
1. Test and certify cooling tower thermal performance
according to CTI Standard 201.
2. Test and certify cooling tower sound performance
according to CTI ATC-128.
B. Meet or Exceed energy efficiency per ASHRAE 90.1.
1.5 WARRANTY
A. Motor/Drive System: Five (5) year comprehensive
warranty against materials and workmanship including
motor, fan, bearings, mechanical support, sheaves,
bushings and belt.
B. Unit: One (1) year from start-up, not to exceed eighteen
(18) months from shipment on the unit.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Manufactures: Subject to compliance with requirements,
provide cooling towers manufactured by one of the
following:
1. EVAPCO, Inc.
2. Approved Substitute
2.2 MATERIALS
A. Galvanized Sheet Steel complying with ASTM A 653/A
653M and having G-235 designation.
B. Optional Type 304 and/or 316 Stainless Steel as specified.
2.3 FORCED-DRAFT, COUNTERFLOW COOLING TOWERS
A. Description: Factory assembled and tested, forced draft
counterflow cooling tower complete with fill, fan,
louvers, accessories, and rigging supports.
B. Cooling Tower Characteristics and Capacities: Refer to the
Cooling Tower schedule.
C. Fan(s):
1. Type and Material: forward curved, centrifugal of
hotdipped galvanized construction. The fans shall be
factory installed, and statically and dynamically
balanced for vibration free operation.
2. Fan Housing: The complete drive system, including the
electric motor, belts, bearings, fan, and drives shall be
completely enclosed in a protective housing which
covers the drive system and provides sound reduction.
3. Maximum sound pressure level of _____dB(A) measured
at 5 feet above the fan discharge during full speed
operation in accordance with CTI Standard ATC-128.
D. Water Distribution System: Non-corrosive materials.
1. Evenly distribute of water over fill material with
pressurized spray tree.
a. Pipes: Schedule 40 PVC, Non-corrosive Materials
b. Nozzles: Non-clogging, ABS Plastic, threaded into
branch piping.
2. Maximum pressure at inlet shall be ____ psig.
20
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
S P E C I F I C AT I O N S
SECTION 23 65 00 – FACTORY-FABRICATED COOLING TOWERS
PART 1 – GENERAL
E. IBC Compliance: The unit structure shall be designed, analyzed, and constructed in accordance with the latest edition of the International Building Code (IBC) Regulations
for seismic loads up to _____ g or wind loads up to __ psf.
F. Collection Basin Material: Type 304 Stainless Steel for long
life and durability (Optional Stainless Steel Water Touch
Basin, Water Touch Unit, and All Stainless Steel Unit):
1. Removable stainless-steel strainer with openings
smaller than nozzle orifices.
2. Joints: Bolted and sealed watertight.
3. Overflow, Makeup and Drain connections: Type 304
Stainless Steel (MPT).
4. Outlet Connection: Type 304 Beveled for weld and
grooved for mechanical coupling.
G. Casing: Heavy Gauge G-235 Galvanized Steel or Type 304
Stainless Steel (Optional):
1. Casing panels shall totally encase the fill media to
protect the fill from damage due to direct
atmospheric exposure. All galvanized steel panel
edges shall be coated with a 95% pure zinc
compound during fabrication.
2. Fasteners: Corrosion resistance equal to or better than
materials being fastened.
3. Joints: Sealed watertight.
4. Welded Connections: Continuous and watertight
H. Fill Media: PVC; resistant to rot, decay and biological
attack; formed, crossfluted bonded together for strength
and durability in block format for easy removal and
replacement; suitable for use as a working surface; self
extinguishing with flame spread rating of 5 per ASTM E8481a; able to withstand continuous operating temperature
of 130ºF; and fabricated, formed and installed by the
manufacturer to ensure water breaks up into droplets.
I. Drift Eliminators: Same material as Fill. 0.001% drift rate.
J. Protective Air Inlet Screens: Galvanized Steel
K. Water Level Control: Brass mechanical makeup water
valve and plastic float with an adjustable linkage.
2.4 MOTORS AND DRIVES
A. General requirements for motors are specified in Division
23 Section “Motors”.
B. Enclosure Type: TEFC
C. Motor Speed: Single Speed (Option: VFD Duty, 2-speed)
D. Drive: Power Band Belt designed for 150% of the motor
nameplate HP.
1. Belt: V-belt type.
2. Sheaves: Aluminum alloy, taper lock design.
3. Bearings: Heavy duty, self-aligning bearings with
extended grease lines and fittings.
4. Fan Shaft: Solid steel shaft with forged bearing
journals.
5. Vibration Cutout Switch: Mechanical switch to deenergize fan motors if excessive vibration in NEMA 4
enclosure.
2.5 MAINTENANCE ACCESS
A. Access Door: A circular access door shall be located above
the basin to allow for easy access to the pan interior.
B. Ladders: Aluminum, vertical complying with 29 CFR
1910.27.
2.6 SOUND ATTENUATION (OPTIONAL)
A. Inlet Attenuation: Materials to be same as fan section.
Baffled panels shall change the path of air entry and
capture radiated noise. External belt adjustment and
lubrication points shall be provided.
B. Discharge Attenuation: Straight sided discharge hood
with insulated baffles to reduce the overall sound level of
the discharge air. A large access panel to allow access to
the water distribution system and drift eliminators shall
be provided.
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract,
including General and Supplementary Conditions and
Division 1 Specification Sections, apply to this section.
1.2 SUMMARY:
A. This Section includes factory assembled and tested, open
circuit, forced draft counterflow cooling tower.
1.3 SUBMITTALS
A. General. Submit the following:
1. Certified drawings of the cooling tower, sound data,
recommended steel support indicating weight
loadings, wiring diagrams, installation instructions,
operation and maintenance instructions, and thermal
performance guarantee by the manufacturer.
1.4 QUALITY ASSURANCE
A. Verification of Performance:
1. Test and certify cooling tower thermal performance
according to CTI Standard 201.
2. Test and certify cooling tower sound performance
according to CTI ATC-128.
B. Meet or Exceed energy efficiency per ASHRAE 90.1.
1.5 WARRANTY
A. Motor/Drive System: Five (5) year comprehensive
warranty against materials and workmanship including
motor, fan, bearings, mechanical support, sheaves,
bushings and belt.
B. Unit: One (1) year from start-up, not to exceed eighteen
(18) months from shipment on the unit.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Manufactures: Subject to compliance with requirements,
provide cooling towers manufactured by one of the
following:
1. EVAPCO, Inc.
2. Approved Substitute
2.2 MATERIALS
A. Galvanized Sheet Steel casing and fan housing complying
with ASTM A 653/A 653M and having G-235 designation
and Type 304 Stainless Steel basin.
B. Optional Type 304 and/or 316 Stainless Steel as specified.
2.3 FORCED-DRAFT, COUNTERFLOW COOLING TOWERS
A. Description: Factory assembled and tested, forced draft
counterflow cooling tower complete with fill, fan(s), fan
screens, accessories, and rigging supports.
B. Cooling Tower Characteristics and Capacities: Refer to the
Cooling Tower schedule.
C. Fan(s):
1. Type and Material: forward curved, centrifugal of
hotdipped galvanized construction. The fans shall be
factory installed, and statically and dynamically
balanced for vibration free operation.
2. Fan Housing: The complete drive system, including the
electric motor, belts, bearings, fan, and drives shall be
completely enclosed in a protective housing which
covers the drive system and provides sound reduction.
3. Maximum sound pressure level of _____dB(A) measured
at 5 feet above the fan discharge during full speed
operation in accordance with CTI Standard ATC-128.
D. Water Distribution System: Non-corrosive materials.
1. Evenly distribute of water over fill material with
pressurized spray tree.
a. Pipes: Schedule 40 PVC, Non-corrosive Materials
b. Nozzles: Non-clogging, ABS Plastic, threaded into
branch piping.
2. Maximum pressure at inlet shall be ____ psig.
21
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
THERMAL PERFORMANCE
Thermal performance certified by the Cooling Technology †
Institute (CTI) in accordance with CTI Standard STD-201
MODELS LSTB 5112 TO 5718
To Make a Selection:
Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to
or greater than the flow required. Read horizontally to the left to find the model number of the unit that will perform the duty.
COOLING CAPACITY IN GPM
MODEL NO.
LSTB 5112
LSTB 5212
LSTB 5312
LSTB 5412
LSTB 5512
MOTOR
HP
(1) 20
(1) 20
(1) 25
(1) 25
(1) 30
LSTB 5118
LSTB 5218
LSTB 5318
LSTB 5418
LSTB 5518
LSTB 5618
LSTB 5718
(1) 25
(1) 30
(1) 40
(1) 30
(1) 40
(1) 40
(1) 50
TEMP °F
EWT
LWT
WB
90°
80°
66°
624
683
731
760
803
95°
80°
66°
483
538
578
607
642
90°
80°
68°
575
632
677
706
747
95°
80°
68°
443
497
534
563
596
90°
80°
70°
506
562
603
632
669
95°
80°
70°
394
447
481
511
541
90°
80°
72°
437
491
528
557
590
95°
80°
72°
347
398
429
459
486
95°
85°
75°
582
639
685
714
755
100°
85°
75°
453
508
545
574
608
885
942
1036
1027
1124
1169
1251
681
728
807
809
890
933
1000
813
867
956
951
1042
1087
1163
624
668
741
748
823
867
930
714
763
846
846
929
973
1042
554
594
661
672
741
786
843
616
659
732
739
814
858
920
488
523
583
598
661
707
759
823
878
968
962
1054
1098
1176
638
683
758
763
840
884
948
COOLING CAPACITY IN GPM
MODEL NO.
LSTB 5112
LSTB 5212
LSTB 5312
LSTB 5412
LSTB 5512
MOTOR
HP
(1) 20
(1) 20
(1) 25
(1) 25
(1) 30
LSTB 5118
LSTB 5218
LSTB 5318
LSTB 5418
LSTB 5518
LSTB 5618
LSTB 5718
(1) 25
(1) 30
(1) 40
(1) 30
(1) 40
(1) 40
(1) 50
TEMP °F
EWT
LWT
WB
95°
85°
76°
547
604
647
676
715
100°
85°
76°
427
481
517
547
579
95°
85°
78°
470
525
564
593
627
97°
87°
78°
580
638
683
712
753
100°
85°
78°
372
424
457
487
516
102°
87°
78°
456
510
548
577
611
95°
85°
80°
380
432
465
495
524
97°
87°
80°
495
551
591
620
656
100°
85°
80°
309
358
386
416
442
102°
87°
80°
393
447
480
510
540
772
825
911
908
996
1040
1113
602
644
716
723
797
841
902
663
708
786
789
868
912
978
821
875
965
959
1051
1096
1173
524
561
625
638
704
750
804
642
687
762
767
844
888
952
534
572
637
650
717
762
817
698
746
827
828
910
954
1022
434
466
520
538
595
641
689
553
593
660
671
740
785
842
Note: For alternate selections and conditions other than those stated, consult your iES selection program or local EVAPCO representative.
22
† Mark Owned by the Cooling Technology Institute.
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
E N G I N E E R I N G D ATA & D I M E N S I O N S
31-1/8
WATER
INLET
C
P
ACCESS
DOOR
MAKE-UP
5' 1-1/8"
LSTB 5112 THRU 5512
LSTB 5118 THRU 5718
11' 11-1/2"
18' 1/8"
H
OVER FLOW
DRAIN
26-1/4
18-3/4
6-1/4
WATER
OUTLET
3-1/4
16-5/8
26-5/8
5' 5-1/2"
19-1/8
SMALL CENTRIFUGAL FAN MODELS
LSTB 5112 TO 5718
WEIGHT (LBS.)
DIMENSIONS
CONNECTIONS (IN.)
MODEL
NO.
SHIPPING
OPERATING
NO.
FANS
FAN
MOTOR
HP*
AIR
FLOW
CFM
H
P
C
WATER
IN
WATER
OUT
MAKE
UP
LSTB 5112
LSTB 5212
LSTB 5312
LSTB 5412
LSTB 5512
4130
4370
4400
4640
4690
6250
6490
6520
6760
6810
4
4
4
4
4
20
20
25
25
30
38,700
37,600
40,400
39,500
41,800
10' 6-7/8"
11' 6-7/8"
11' 6-7/8"
12' 6-7/8"
12' 6-7/8"
9' 8-1/4"
10' 8-1/4"
10' 8-1/4"
11' 8-1/4"
11' 8-1/4"
5' 5-3/4"
6' 5-3/4"
6' 5-3/4"
7' 5-3/4"
7' 5-3/4"
6
6
6
6
6
6
6
6
6
6
1
1
1
1
1
2
2
2
2
2
3
3
3
3
3
LSTB 5118
LSTB 5218
LSTB 5318
LSTB 5418
LSTB 5518
LSTB 5618
LSTB 5718
5970
6020
6180
6370
6530
6880
6890
9160
9210
9370
9560
9720
10070
10080
6
6
6
6
6
6
6
25
30
40
30
40
40
50
55,100
58,400
64,000
56,800
62,200
60,800
63,200
10' 6-7/8"
10' 6-7/8"
10' 6-7/8"
11' 6-7/8"
11' 6-7/8"
12' 6-7/8"
12' 6-7/8"
9' 8-1/4"
9' 8-1/4"
9' 8-1/4"
10' 8-1/4"
10' 8-1/4"
11' 8-1/4"
11' 8-1/4"
5' 5-3/4"
5' 5-3/4"
5' 5-3/4"
6' 5-3/4"
6' 5-3/4"
7' 5-3/4"
7' 5-3/4"
6
6
6
6
6
6
6
6
6
6
6
6
6
6
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
NOTES:
1. An adequately sized bleed line must be installed in the cooling tower system to prevent build-up of impurities in the recirculated water.
2. Connections 6˝ or smaller are MPT. Connections larger than 6˝ are Beveled For Weld/Grooved for mechanical coupling (BFW/Grooved).
3. Do not use catalog drawings for certified prints. Dimensions are subject to change.
* For external static pressure up to 1⁄2˝, use next size fan motor.
23
OVER
DRAIN FLOW
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
THERMAL PERFORMANCE
Thermal performance certified by the Cooling Technology †
Institute (CTI) in accordance with CTI Standard STD-201
MODELS LSTB 8P112 TO 8P536
To Make a Selection:
Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to
or greater than the flow required. Read horizontally to the left to find the model number of the unit that will perform the duty.
COOLING CAPACITY IN GPM
MODEL NO.
LSTB 8P112
LSTB 8P212
LSTB 8P312
LSTB 8P412
LSTB 8P512
MOTOR
HP
(1) 30
(1) 40
(1) 40
(1) 40
(1) 50
LSTB 8P118
LSTB 8P218
LSTB 8P318
LSTB 8P418
LSTB 8P518
LSTB 8P618
LSTB 8P124
LSTB 8P224
LSTB 8P324
LSTB 8P424
LSTB 8P524
LSTB 8P136
LSTB 8P236
LSTB 8P336
LSTB 8P436
LSTB 8P536
(1) 40
(1) 50
(1) 40
(1) 50
(1) 60
(1) 60
(2) 25
(2) 40
(2) 40
(2) 40
(2) 50
(3) 30
(3) 40
(3) 40
(3) 40
(3) 50
TEMP °F
EWT
LWT
WB
90°
80°
66°
939
1035
1126
1172
1255
95°
80°
66°
724
803
889
935
1002
90°
80°
68°
864
954
1043
1089
1166
95°
80°
68°
663
737
822
868
931
90°
80°
70°
759
842
928
974
1044
95°
80°
70°
589
657
739
787
844
90°
80°
72°
654
728
812
859
921
95°
80°
72°
519
579
659
707
759
95°
85°
75°
875
966
1055
1101
1179
100°
85°
75°
679
754
839
885
949
1360
1469
1492
1603
1698
1768
1938
2070
2252
2345
2509
2818
3104
3377
3517
3764
1045
1133
1171
1262
1341
1410
1519
1606
1778
1870
2004
2171
2409
2667
2805
3007
1248
1351
1379
1483
1573
1642
1791
1909
2086
2178
2332
2591
2863
3128
3267
3498
957
1040
1080
1165
1239
1310
1402
1474
1643
1737
1862
1989
2211
2465
2605
2793
1097
1189
1224
1319
1400
1469
1589
1684
1857
1949
2088
2277
2526
2785
2923
3132
850
925
970
1048
1115
1187
1258
1313
1478
1574
1688
1768
1970
2218
2361
2532
944
1026
1068
1152
1225
1295
1385
1456
1624
1718
1842
1963
2184
2437
2577
2763
747
814
862
933
993
1066
1118
1157
1317
1414
1518
1557
1736
1976
2121
2278
1264
1368
1395
1500
1591
1660
1812
1933
2110
2202
2357
2625
2899
3165
3303
3536
979
1064
1104
1190
1265
1335
1432
1508
1678
1771
1899
2036
2262
2517
2656
2848
COOLING CAPACITY IN GPM
MODEL NO.
MOTOR
HP
LSTB 8P112
LSTB 8P212
LSTB 8P312
LSTB 8P412
LSTB 8P512
LSTB 8P118
LSTB 8P218
LSTB 8P318
LSTB 8P418
LSTB 8P518
LSTB 8P618
LSTB 8P124
LSTB 8P224
LSTB 8P324
LSTB 8P424
LSTB 8P524
LSTB 8P136
LSTB 8P236
LSTB 8P336
LSTB 8P436
LSTB 8P536
(1) 30
(1) 40
(1) 40
(1) 40
(1) 50
(1) 40
(1) 50
(1) 40
(1) 50
(1) 60
(1) 60
(2) 25
(2) 40
(2) 40
(2) 40
(2) 50
(3) 30
(3) 40
(3) 40
(3) 40
(3) 50
TEMP °F
EWT
LWT
WB
95°
85°
76°
100°
85°
76°
95°
85°
78°
97°
87°
78°
100°
85°
78°
102°
87°
78°
95°
85°
80°
97°
87°
80°
100°
85°
80°
102°
87°
80°
821
908
996
1042
1116
1186
1285
1316
1416
1502
1571
1708
1817
1992
2084
2232
2462
2725
2988
3126
3348
640
712
796
843
903
923
1003
1045
1128
1200
1271
1356
1424
1592
1685
1807
1919
2136
2387
2528
2710
705
782
868
914
979
1016
1103
1142
1231
1308
1378
1481
1564
1735
1827
1959
2114
2346
2603
2741
2938
872
964
1052
1098
1176
1261
1364
1391
1496
1587
1656
1807
1927
2104
2196
2352
2617
2891
3157
3295
3527
557
621
703
750
805
803
873
920
994
1059
1131
1193
1242
1405
1500
1611
1670
1863
2108
2250
2416
682
758
843
889
954
984
1070
1109
1196
1271
1342
1439
1516
1686
1779
1907
2047
2274
2529
2668
2861
568
633
715
763
819
819
891
937
1012
1078
1150
1216
1266
1430
1525
1637
1703
1899
2145
2288
2456
742
823
909
955
1024
1072
1162
1199
1291
1371
1441
1555
1646
1819
1910
2048
2226
2469
2728
2866
3072
462
516
593
641
689
666
725
775
838
894
967
1005
1032
1186
1282
1378
1386
1547
1778
1923
2067
588
656
738
786
843
848
923
968
1046
1113
1185
1256
1311
1476
1572
1686
1765
1967
2214
2358
2529
Note: For alternate selections and conditions other than those stated, consult your iES selection program or local EVAPCO representative.
24
† Mark Owned by the Cooling Technology Institute.
TECHNOLOGY
FOR
F U T U R E , AV A I L A B L E T O D AY !
THE
E N G I N E E R I N G D ATA & D I M E N S I O N S
71-7/8
WATER INLET
WATER INLET
WATER
INLET
C
108
LSTB 8P112
LSTB 8P118 THRU 8P618
THRU
8P512
OVER
FLOW
ACCESS
DOOR MAKE UP
H
P
7' 3-3/8"
DRAIN
20-7/8
3-1/4
7-5/8
23-5/8
35
J
18'
11' 11-3/4"
WATER
OUTLET
40-3/8
7' 10"
71-7/8
71-7/8
71-7/8
WATER INLET
145-1/2
145-1/4
WATER INLET
WATER INLET
WATER INLET
WATER INLET
LSTB 8P124 THRU 8P524
LSTB 8P136 THRU 8P536
24' 1"
36' 2-1/4"
LARGE CENTRIFUGAL FAN MODELS
LSTB 8P112 TO 8P536
WEIGHT (LBS.)
MODEL
NO.
DIMENSIONS
NO.
SHIPPING OPERATING FANS
71-7/8
CONNECTIONS (IN.)
FAN
MOTOR
HP*
AIR
FLOW
CFM
H
P
C
J
WATER
IN
WATER
OUT
MAKE
UP
DRAIN
OVER
FLOW
LSTB 8P112
LSTB 8P212
LSTB 8P312
LSTB 8P412
LSTB 8P512
5550
5710
6050
6380
6390
9030
9190
9530
9860
9870
2
2
2
2
2
30
40
40
40
50
58,400
63,800
62,100
60,100
64,300
12' 6-3/8"
12' 6-3/8"
13' 6-3/8"
14' 6-3/8"
14' 6-3/8"
11' 6-3/4"
11' 6-3/4"
12' 6-3/4"
13' 6-3/4"
13' 6-3/4"
5' 3"
5' 3"
6' 3"
7' 3"
7' 3"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
8
8
8
8
8
8
8
8
8
8
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
LSTB 8P118
LSTB 8P218
LSTB 8P318
LSTB 8P418
LSTB 8P518
LSTB 8P618
8180
8190
8210
8220
8440
9380
13530
13540
13560
13570
13790
14730
3
3
3
3
3
3
40
50
40
50
60
60
84,800
90,800
82,600
88,500
93,500
90,600
12' 6-3/8"
12' 6-3/8"
13' 6-3/8"
13' 6-3/8"
13' 6-3/8"
14' 6-3/8"
11' 6-3/4"
11' 6-3/4"
12' 6-3/4"
12' 6-3/4"
12' 6-3/4"
13' 6-3/4"
5' 3"
5' 3"
6' 3"
6' 3"
6' 3"
7' 3"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
8
8
8
8
8
8
8
8
8
8
8
8
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
LSTB 8P124
LSTB 8P224
LSTB 8P324
LSTB 8P424
LSTB 8P524
11470
11210
11890
12550
12570
18660
18400
19080
19740
19760
4
4
4
4
4
(2) 25
(2) 40
(2) 40
(2) 40
(2) 50
107,500
127,500
124,200
120,100
128,600
13' 6-3/8"
12' 6-3/8"
13' 6-3/8"
14' 6-3/8"
14' 6-3/8"
12' 6-3/4"
11' 6-3/4"
12' 6-3/4"
13' 6-3/4"
13' 6-3/4"
6' 3"
5' 3"
6' 3"
7' 3"
7' 3"
7-1/2"
7-1/2"
7-1/2"
7-1/2"
7-1/2"
(2)8
(2)8
(2)8
(2)8
(2)8
10
10
10
10
10
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
LSTB 8P136
LSTB 8P236
LSTB 8P336
LSTB 8P436
LSTB 8P536
16710
17190
18210
19200
19230
27240
27720
28740
29730
29760
6
6
6
6
6
(3) 30
(3) 40
(3) 40
(3) 40
(3) 50
175,200
191,300
186,300
180,200
193,000
12' 6-3/8"
12' 6-3/8"
13' 6-3/8"
14' 6-3/8"
14' 6-3/8"
11' 6-3/4"
11' 6-3/4"
12' 6-3/4"
13' 6-3/4"
13' 6-3/4"
5' 3"
5' 3"
6' 3"
7' 3"
7' 3"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
6-1/2"
(3)8
(3)8
(3)8
(3)8
(3)8
(2)8
(2)8
(2)8
(2)8
(2)8
(2)2
(2)2
(2)2
(2)2
(2)2
(2)2
(2)2
(2)2
(2)2
(2)2
(2)3
(2)3
(2)3
(2)3
(2)3
NOTES:
1. An adequately sized bleed line must be installed in the cooling tower system to prevent build-up of impurities in the recirculated water.
2. Connections 6˝ or smaller are MPT. Connections larger than 6˝ are Beveled For Weld/Grooved for mechanical coupling (BFW/Grooved).
3. Do not use catalog drawings for certified prints. Dimensions are subject to change.
* For external static pressure up to 1⁄2˝, use next size fan motor.
25
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
THERMAL PERFORMANCE
Thermal performance certified by the Cooling Technology †
Institute (CTI) in accordance with CTI Standard STD-201
MODELS LSTB 10112 TO 10636
To Make a Selection:
Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to
or greater than the flow required. Read horizontally to the left to find the model number of the unit that will perform the duty.
COOLING CAPACITY IN GPM
MODEL NO.
LSTB 10112
LSTB 10212
LSTB 10312
LSTB 10412
LSTB 10512
LSTB 10612
LSTB 10118
LSTB 10218
LSTB 10318
LSTB 10418
LSTB 10518
LSTB 10618
LSTB 10718
LSTB 10124
LSTB 10224
LSTB 10324
LSTB 10424
LSTB 10524
LSTB 10136
LSTB 10236
LSTB 10336
LSTB 10436
LSTB 10536
LSTB 10636
MOTOR
HP
(1) 30
(1) 40
(1) 40
(1) 50
(1) 50
(1) 60
(2) 25
(2) 30
(2) 25
(2) 30
(2) 30
(2) 40
(2) 40
(2) 40
(2) 40
(2) 50
(2) 50
(2) 60
(3) 40
(3) 40
(3) 50
(3) 50
(3) 60
(3) 75
TEMP °F
EWT
LWT
WB
90°
80°
66°
1246
1366
1425
1466
1525
1612
1724
1836
1892
2006
2094
2197
2287
2505
2732
2932
3050
3224
3758
4099
4398
4576
4836
5173
95°
80°
66°
977
1076
1135
1159
1217
1288
1324
1415
1484
1578
1667
1736
1824
1936
2153
2318
2434
2576
2904
3229
3477
3651
3864
4140
90°
80°
68°
1151
1265
1323
1358
1417
1498
1582
1689
1748
1856
1943
2036
2124
2306
2529
2717
2833
2996
3459
3794
4075
4250
4494
4809
95°
80°
68°
902
994
1054
1071
1130
1196
1212
1297
1370
1457
1548
1605
1694
1777
1989
2143
2261
2393
2665
2983
3214
3391
3589
3847
90°
80°
70°
1022
1125
1183
1210
1268
1342
1390
1485
1552
1649
1738
1813
1901
2031
2250
2420
2536
2684
3046
3375
3630
3804
4025
4311
95°
80°
70°
809
894
954
964
1025
1085
1076
1154
1229
1309
1401
1444
1536
1581
1789
1929
2049
2170
2371
2683
2893
3074
3254
3490
90°
80°
72°
891
983
1043
1059
1118
1183
1197
1281
1354
1440
1531
1586
1676
1754
1965
2118
2236
2367
2631
2948
3177
3354
3550
3806
95°
80°
72°
720
796
857
860
921
976
947
1016
1093
1165
1258
1288
1380
1392
1592
1720
1842
1952
2087
2388
2580
2762
2928
3142
95°
85°
75°
1165
1279
1337
1374
1432
1514
1602
1710
1769
1878
1965
2059
2147
2335
2558
2747
2865
3029
3502
3837
4121
4297
4543
4861
100°
85°
75°
921
1016
1075
1094
1152
1220
1241
1328
1399
1488
1579
1639
1727
1818
2031
2188
2305
2440
2727
3047
3282
3457
3660
3923
95°
85°
80°
782
864
925
933
993
1052
1037
1111
1188
1265
1358
1397
1489
1523
1728
1866
1987
2104
2284
2593
2798
2980
3156
3384
97°
87°
80°
1001
1101
1160
1185
1243
1316
1359
1451
1519
1615
1704
1776
1864
1985
2203
2371
2487
2631
2978
3304
3556
3730
3947
4228
100°
85°
80°
647
716
777
774
835
886
844
904
983
1048
1140
1159
1251
1239
1431
1548
1670
1772
1858
2147
2323
2505
2658
2854
102°
87°
80°
808
893
953
963
1023
1083
1075
1152
1227
1307
1399
1442
1534
1578
1786
1926
2046
2167
2367
2679
2889
3070
3250
3485
COOLING CAPACITY IN GPM
MODEL NO.
LSTB 10112
LSTB 10212
LSTB 10312
LSTB 10412
LSTB 10512
LSTB 10612
LSTB 10118
LSTB 10218
LSTB 10318
LSTB 10418
LSTB 10518
LSTB 10618
LSTB 10718
LSTB 10124
LSTB 10224
LSTB 10324
LSTB 10424
LSTB 10524
LSTB 10136
LSTB 10236
LSTB 10336
LSTB 10436
LSTB 10536
LSTB 10636
MOTOR
HP
(1) 30
(1) 40
(1) 40
(1) 50
(1) 50
(1) 60
(2) 25
(2) 30
(2) 25
(2) 30
(2) 30
(2) 40
(2) 40
(2) 40
(2) 40
(2) 50
(2) 50
(2) 60
(3) 40
(3) 40
(3) 50
(3) 50
(3) 60
(3) 75
TEMP °F
EWT
LWT
WB
95°
85°
76°
1098
1207
1265
1298
1356
1434
1503
1604
1668
1771
1859
1944
2032
2194
2415
2595
2712
2868
3291
3622
3893
4067
4302
4605
100°
85°
76°
873
962
1023
1038
1097
1161
1169
1251
1325
1410
1502
1554
1644
1714
1925
2075
2193
2322
2570
2887
3113
3290
3483
3734
95°
85°
78°
953
1050
1109
1131
1189
1259
1288
1378
1447
1539
1629
1695
1782
1885
2100
2262
2378
2517
2827
3150
3393
3567
3776
4046
97°
87°
78°
1162
1276
1334
1370
1429
1511
1598
1705
1764
1873
1960
2054
2142
2328
2552
2741
2858
3021
3493
3828
4111
4287
4532
4849
100°
85°
78°
768
849
910
916
977
1035
1017
1089
1167
1243
1335
1373
1464
1493
1697
1833
1954
2070
2239
2546
2749
2931
3105
3330
102°
87°
78°
926
1021
1080
1099
1158
1226
1247
1335
1406
1496
1586
1647
1735
1827
2041
2199
2315
2451
2741
3062
3298
3473
3677
3940
Note: For alternate selections and conditions other than those stated, consult your iES selection program or local EVAPCO representative.
26
† Mark Owned by the Cooling Technology Institute.
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
E N G I N E E R I N G D ATA & D I M E N S I O N S
52-7/8
71-7/8
58-7/8
WATER INLET
WATER INLET
WATER
INLET
LSTB 10118 THRU 10718
LSTB 10112
C
WATER INLET
THRU
10612
H
P
ACCESS
DOOR
8' 6-1/2"
MAKE-UP
31
OVERFLOW
DRAIN
23-5/8
3-3/4
7-5/8
17-5/8
J
11' 11-5/8"
18' 1/4"
WATER OUTLET
37-1/4
9' 9-3/4"
71-7/8
71-7/8
71-7/8
145-1/4
WATER INLET
WATER INLET
145-1/4
LSTB 10124 THRU 10524
WATER INLET
LSTB 10136 THRU 10636
24' 3/4"
36' 1-7/8"
LARGE CENTRIFUGAL FAN MODELS
LSTB 10112 TO 10636
WEIGHT (LBS.)
MODEL
NO.
DIMENSIONS
NO.
SHIPPING OPERATING FANS
71-7/8
WATER INLET
WATER INLET
CONNECTIONS (IN.)
FAN
MOTOR
HP*
AIR
FLOW
CFM
H
P
C
J
WATER
IN
WATER
OUT
MAKE
UP
DRAIN
OVER
FLOW
LSTB 10112
LSTB 10212
LSTB 10312
LSTB 10412
LSTB 10512
LSTB 10612
8030
8190
8600
8200
8610
8830
13940
14100
14510
14110
14520
14740
3
3
3
3
3
3
30
40
40
50
50
60
69,000
75,600
73,800
81,000
79,200
83,900
15' 3/8"
15' 3/8"
16' 3/8"
15' 3/8"
16' 3/8"
16' 3/8"
14' 3/4"
14' 3/4"
15' 3/4"
14' 3/4"
15' 3/4"
15' 3/4"
6' 5-7/8"
6' 5-7/8"
7' 5-7/8"
6' 5-7/8"
7' 5-7/8"
7' 5-7/8"
6-7/8"
6-7/8"
6-7/8"
6-7/8"
6-7/8"
6-7/8"
8"
8"
8"
8"
8"
8"
8"
8"
8"
8"
8"
8"
2"
2"
2"
2"
2"
2"
3"
3"
3"
3"
3"
3"
4"
4"
4"
4"
4"
4"
LSTB 10118
LSTB 10218
LSTB 10318
LSTB 10418
LSTB 10518
LSTB 10618
LSTB 10718
11460
11560
12080
12180
12510
12500
13130
20420
20520
21040
21140
21770
21460
22090
4
4
4
4
4
4
4
(2) 25
(2) 30
(2) 25
(2) 30
(2) 30
(2) 40
(2) 40
110,600
117,100
107,500
113,900
111,300
124,700
121,900
14' 3/8"
14' 3/8"
15' 3/8"
15' 3/8"
16' 3/8"
15' 3/8"
16' 3/8"
13' 3/4"
13' 3/4"
14' 3/4"
14' 3/4"
15' 3/4"
14' 3/4"
15' 3/4"
5' 5-7/8"
5' 5-7/8"
6' 5-7/8"
6' 5-7/8"
7' 5-7/8"
6' 5-7/8"
7' 5-7/8"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
(2)8"
(2)8"
(2)8"
(2)8"
(2)8"
(2)8"
(2)8"
10"
10"
10"
10"
10"
10"
10"
2"
2"
2"
2"
2"
2"
2"
3"
3"
3"
3"
3"
3"
3"
4"
4"
4"
4"
4"
4"
4"
LSTB 10124
LSTB 10224
LSTB 10324
LSTB 10424
LSTB 10524
15220
16040
16060
16880
17310
27400
28220
28240
29060
29490
6
6
6
6
6
(2) 40
(2) 40
(2) 50
(2) 50
(2) 60
155,400
151,200
162,000
158,400
163,600
14' 3/8"
15' 3/8"
15' 3/8"
16' 3/8"
16' 3/8"
13' 3/4"
14' 3/4"
14' 3/4"
15' 3/4"
15' 3/4"
5' 5-7/8"
6' 5-7/8"
6' 5-7/8"
7' 5-7/8"
7' 5-7/8"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
(2)8"
(2)8"
(2)8"
(2)8"
(2)8"
10"
10"
10"
10"
10"
2"
2"
2"
2"
2"
3"
3"
3"
3"
3"
4"
4"
4"
4"
4"
LSTB 10136
LSTB 10236
LSTB 10336
LSTB 10436
LSTB 10536
LSTB 10636
23880
25110
25140
26370
27020
27320
41240
42470
42500
43730
44380
44680
9
9
9
9
9
9
(3) 40
(3) 40
(3) 50
(3) 50
(3) 60
(3) 75
233,100
226,800
243,000
237,700
251,800
269,000
14' 3/8"
15' 3/8"
15' 3/8"
16' 3/8"
16' 3/8"
16' 3/8"
13' 3/4"
14' 3/4"
14' 3/4"
15' 3/4"
15' 3/4"
15' 3/4"
5' 5-7/8"
6' 5-7/8"
6' 5-7/8"
7' 5-7/8"
7' 5-7/8"
7' 5-7/8"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
7-3/4"
(3)8"
(3)8"
(3)8"
(3)8"
(3)8"
(3)8"
(2)10"
(2)10"
(2)10"
(2)10"
(2)10"
(2)10"
3"
3"
3"
3"
3"
3"
3"
3"
3"
3"
3"
3"
4"
4"
4"
4"
4"
4"
NOTES:
1. An adequately sized bleed line must be installed in the cooling tower system to prevent build-up of impurities in the recirculated water.
2. Connections 6˝ or smaller are MPT. Connections larger than 6˝ are Beveled For Weld/Grooved for mechanical coupling (BFW/Grooved).
3. Do not use catalog drawings for certified prints. Dimensions are subject to change.
* For external static pressure up to 1⁄2˝, use next size fan motor.
27
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
THERMAL PERFORMANCE
Thermal performance certified by the Cooling Technology †
Institute (CTI) in accordance with CTI Standard STD-201
MODELS LPT 316 TO 5712
To Make a Selection:
Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to
or greater than the flow required. Read horizontally to the left to find the model number of the unit that will perform the duty.
COOLING CAPACITY IN GPM
MODEL NO.
LPT 316
LPT 326
LPT 336
LPT 346
LPT 356
LPT 366
LPT 516
LPT 526
LPT 536
LPT 546
LPT 556
LPT 566
LPT 576
LPT 586
LPT 596
LPT 519
LPT 529
LPT 539
LPT 549
LPT 559
LPT 569
LPT 5112
LPT 5212
LPT 5312
LPT 5412
LPT 5512
LPT 5612
LPT 5712
MOTOR
HP
1.5
2
3
3
5
7.5
3
5
3
5
7.5
7.5
10
7.5
10
10
15
15
20
15
20
15
20
25
30
25
30
30
TEMP °F
EWT
LWT
WB
90°
80°
66°
110
136
154
171
198
221
232
272
282
298
307
326
355
363
392
406
459
488
516
539
585
542
596
640
678
686
716
757
95°
80°
66°
83
104
118
132
153
173
177
208
222
231
236
254
278
289
313
311
352
379
403
427
467
418
461
497
528
542
568
607
90°
80°
68°
100
125
142
157
182
204
213
249
261
274
282
301
328
337
365
372
421
450
477
500
544
498
548
590
626
636
664
704
95°
80°
68°
76
95
108
121
141
159
162
191
205
212
217
233
255
267
290
285
323
348
371
396
432
384
423
456
485
502
525
564
90°
80°
70°
88
109
124
138
161
181
187
219
232
242
248
266
290
301
326
326
370
397
422
446
487
438
483
521
553
566
592
631
95°
80°
70°
67
84
96
108
126
142
144
170
184
189
193
208
228
241
262
253
288
311
331
357
390
342
378
408
434
452
474
511
90°
80°
72°
75
93
107
119
139
157
160
189
202
209
214
230
252
264
287
281
319
344
366
391
428
379
418
451
479
496
519
558
95°
80°
72°
58
73
84
96
111
126
126
149
165
168
170
185
202
216
235
222
254
276
294
319
349
303
335
361
384
404
423
460
95°
85°
75°
102
126
143
159
185
207
216
252
264
278
286
305
332
341
369
377
426
455
483
506
550
505
555
597
633
643
672
712
100°
85°
75°
77
97
111
124
144
163
166
196
209
217
222
238
261
273
296
292
331
356
379
404
441
392
433
467
496
512
536
575
95°
85°
80°
64
81
92
104
122
137
138
164
178
183
186
201
221
233
254
244
278
300
320
345
378
331
365
394
419
438
458
496
97°
87°
80°
85
107
121
135
157
177
182
214
227
236
242
260
284
295
320
319
361
388
413
437
477
428
472
509
541
555
580
619
100°
85°
80°
53
65
74
86
100
113
112
133
149
150
151
165
181
195
212
198
226
247
263
288
316
272
300
324
344
365
383
418
102°
87°
80°
67
84
96
108
126
142
144
170
184
189
193
208
228
241
262
253
288
311
331
356
390
342
377
407
433
452
473
510
COOLING CAPACITY IN GPM
MODEL NO.
LPT 316
LPT 326
LPT 336
LPT 346
LPT 356
LPT 366
LPT 516
LPT 526
LPT 536
LPT 546
LPT 556
LPT 566
LPT 576
LPT 586
LPT 596
LPT 519
LPT 529
LPT 539
LPT 549
LPT 559
LPT 569
LPT 5112
LPT 5212
LPT 5312
LPT 5412
LPT 5512
LPT 5612
LPT 5712
MOTOR
HP
1.5
2
3
3
5
7.5
3
5
3
5
7.5
7.5
10
7.5
10
10
15
15
20
15
20
15
20
25
30
25
30
30
TEMP °F
EWT
LWT
WB
95°
85°
76°
95
118
134
149
174
195
202
237
249
261
268
286
313
323
349
353
400
428
455
478
520
473
521
562
596
607
635
674
100°
85°
76°
73
91
104
117
136
154
156
184
198
205
209
225
247
259
281
275
312
336
358
383
419
370
409
441
469
486
509
547
95°
85°
78°
81
101
115
128
149
168
173
203
216
225
230
247
271
282
306
302
343
369
392
417
456
407
449
484
514
529
554
593
97°
87°
78°
102
126
143
159
184
206
215
252
263
277
285
304
331
340
368
375
425
454
481
504
548
503
554
596
631
641
670
710
100°
85°
78°
63
79
90
102
119
135
136
160
175
179
183
197
217
229
249
239
272
295
314
339
372
324
358
386
411
430
451
488
102°
87°
78°
78
97
111
124
145
163
167
197
210
218
223
240
262
274
298
293
332
358
381
406
443
394
435
469
499
515
539
577
Note: For alternate selections and conditions other than those stated, consult your iES selection program or local EVAPCO representative.
28
† Mark Owned by the Cooling Technology Institute.
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
E N G I N E E R I N G D ATA & D I M E N S I O N S
Q
3-1/4
3-1/4
F
WATER INLET
3
C
H
ACCESS
DOOR
P
G
MPT
OVERFLOW
36-1/4
4-3/4”–
LPT 316 to 596
WATER OUTLET
MPT
DRAIN
8-3/4
4-3/4
O
1-3/8
5-1/2
20-1/8
2-3/4
N
W
M
MPT
MAKE-UP
M
L
LOW PROFILE COOLING TOWERS
LPT 316 TO 5712
DIMENSIONS
WEIGHT (LBS.)
MODEL
NO.
LPT 316
LPT 326
LPT 336
LPT 346
LPT 356
LPT 366
LPT 516
LPT 526
LPT 536
LPT 546
LPT 556
LPT 566
LPT 576
LPT 586
LPT 596
LPT 519
LPT 529
LPT 539
LPT 549
LPT 559
LPT 569
LPT 5112
LPT 5212
LPT 5312
LPT 5412
LPT 5512
LPT 5612
LPT 5712
FAN AIR
NO. MOTOR FLOW
SHIPPING OPERATING FANS HP** CFM
1510
1520
1530
1620
1630
1670
2320
2330
2470
2410
2370
2400
2480
2520
2560
2820
2930
2990
3000
3170
3240
3440
3450
3460
3490
3700
3720
3980
2490
2490
2510
2590
2600
2640
4040
4050
4190
4130
4100
4120
4210
4240
4280
5430
5530
5590
5600
5770
5830
6990
7010
7020
7040
7250
7270
7520
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1.5
2
3
3
5
7.5
3
5
3
5
7.5
7.5
10
7.5
10
10
15
15
20
15
20
15
20
25
30
25
30
30
7020
8850
10130
9940
11780
13490
14880
17640
14560
17320
20210
19960
21300
19750
21300
26470
30290
29960
32110
29590
32110
32190
35460
38170
40550
37890
40280
40110
H
W
L
P
Q
C
0
N
M
F
G
6’ 10-1/2”
6’ 10-1/2”
6’ 10-1/2”
6’ 10-1/2”
6’ 10-1/2”
6’ 10-1/2”
6’ 10-5/8”
6’ 10-5/8”
7’ 10-5/8”
6’ 10-5/8”
6’ 10-5/8”
6’ 10-5/8”
6’ 10-5/8”
7’ 10-5/8”
7’ 10-5/8”
7’ 5/8”
7’ 5/8”
7’ 5/8”
7’ 5/8”
8’ 5/8”
8’ 5/8”
7’ 5/8”
7’ 5/8”
7’ 5/8”
7’ 5/8”
8’ 5/8”
8’ 5/8”
9’ 5/8”
3’ 4-1/2”
3’ 4-1/2”
3’ 4-1/2”
3’ 4-1/2”
3’ 4-1/2”
3’ 4-1/2”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
5’ 5/8”
10’ 2”
10’ 2”
10’ 2”
10’ 2”
10’ 2”
10’ 2”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
12’ 3”
15’ 2-3/8”
15’ 2-3/8”
15’ 2-3/8”
15’ 2-3/8”
15’ 2-3/8”
15’ 2-3/8”
18’ 2-3/4”
18’ 2-3/4”
18’ 2-3/4”
18’ 2-3/4”
18’ 2-3/4”
18’ 2-3/4”
18’ 2-3/4”
6’ 1-7/8”
6’ 1-7/8”
6’ 1-7/8”
6’ 1-7/8”
6’ 1-7/8”
6’ 1-7/8”
6’ 1-3/ 4”
6’ 1-3/4”
7’ 1-3/4”
6’ 1-3/4”
6’ 1-3/4”
6’ 1-3/4”
6’ 1-3/4”
7’ 1-3/4”
7’ 1-3/4”
6’ 2-7/8”
6’ 2-7/8”
6’ 2-7/8”
6’ 2-7/8”
7’ 2-7/8”
7’ 2-7/8”
6’ 2-7/8”
6’ 2-7/8”
6’ 2-7/8”
6’ 2-7/8”
7’ 2-7/8”
7’ 2-7/8”
8’ 2-7/8”
1’ 8-1/4”
1’ 8-1/4”
1’ 8-1/4”
1’ 8-1/4”
1’ 8-1/4”
1’ 8-1/4”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
2’ 6-3/8”
3’ 10-1/4”
3’ 10-1/4”
3’ 10-1/4”
3’ 10-1/4”
3’ 10-1/4”
3’ 10-1/4”
3’ 10-3/8”
3’ 10-3/8”
4’ 10-3/8”
3’ 10-3/8”
3’ 10-3/8”
3’ 10-3/8”
3’ 10-3/8”
4’ 10-3/8”
4’ 10-3/8”
4’ 3/8”
4’ 3/8”
4’ 3/8”
4’ 3/8”
5’ 3/8”
5’ 3/8”
4’ 3/8”
4’ 3/8”
4’ 3/8”
4’ 3/8”
5’ 3/8”
5’ 3/8”
6’ 3/8”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
2’ 1/4”
4’ 11-5/8”
4’ 11-5/8”
4’ 11-5/8”
4’ 11-5/8”
4’ 11-5/8”
4’ 11-5/8”
8’
8’
8’
8’
8’
8’
8’
2’ 8-1/4”
2’ 8-1/4”
2’ 8-1/4”
2’ 8-1/4”
2’ 8-1/4”
2’ 8-1/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
2’ 9-3/4”
5’ 7-1/8”
5’ 7-1/8”
5’ 7-1/8”
5’ 7-1/8”
5’ 7-1/8”
5’ 7-1/8”
8’ 7-1/2”
8’ 7-1/2”
8’ 7-1/2”
8’ 7-1/2”
8’ 7-1/2”
8’ 7-1/2”
8’ 7-1/2”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
5’ 6”
8’ 5-3/8”
8’ 5-3/8”
8’ 5-3/8”
8’ 5-3/8”
8’ 5-3/8”
8’ 5-3/8”
11’ 5-3/4”
11’ 5-3/4”
11’ 5-3/4”
11’ 5-3/4”
11’ 5-3/4”
11’ 5-3/4”
11’ 5-3/4”
4’ 2”
4’ 2”
4’ 2”
4’ 2”
4’ 2”
4’ 2”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
6’ 3”
5’ 3-7/8”
5’ 3-7/8”
5’ 3-7/8”
5’ 3-7/8”
5’ 3-7/8”
5’ 3-7/8”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
6’ 7-3/4”
CONNECTIONS (IN.)
WATER WATER MAKE
OVER
IN* OUT* UP DRAIN FLOW
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
6
6
6
6
6
6
6
6
6
6
6
6
6
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
6
6
6
6
6
6
6
6
6
6
6
6
6
Notes:
1) An adequately sized bleed line must be installed in the cooling tower system to prevent buildup of impurities in the recirculated water.
2) Do not use catalog drawings for certified prints. Dimensions subject to change.
3) For external static pressure up to 1/2”, use next size fan motor.
** One fan motor per unit.
* Connections 6” or smaller are MPT. Connections larger than 6” are Beveled For Weld/Grooved for Mechanical Coupling (BFW/Grooved).
29
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
TECHNOLOGY
FOR
THE
F U T U R E , AV A I L A B L E T O D AY !
THERMAL PERFORMANCE
Thermal performance certified by the Cooling Technology †
Institute (CTI) in accordance with CTI Standard STD-201
MODELS LPT 819 TO 8812
To Make a Selection:
Locate the column with the desired operating temperature conditions. Read down the column until you find the GPM equal to
or greater than the flow required. Read horizontally to the left to find the model number of the unit that will perform the duty.
COOLING CAPACITY IN GPM
MODEL NO.
MOTOR
HP
LPT 819
LPT 829
LPT 839
LPT 849
LPT 859
LPT 869
LPT 879
LPT 8112
LPT 8212
LPT 8312
LPT 8412
LPT 8512
LPT 8612
LPT 8712
LPT 8812
20
15
20
15
25
30
25
25
30
40
30
50
40
50
50
TEMP °F
EWT
LWT
WB
90°
80°
66°
95°
80°
66°
90°
80°
68°
95°
80°
68°
90°
80°
70°
95°
80°
70°
90°
80°
72°
95°
80°
72°
95°
85°
75°
100°
85°
75°
725
751
772
801
819
844
885
925
999
1053
1064
1129
1163
1239
1273
556
583
599
633
639
660
704
715
774
818
840
883
923
987
1020
665
692
711
742
756
780
822
851
920
971
986
1043
1079
1151
1184
511
535
551
586
588
608
652
656
711
752
777
812
854
915
949
584
610
628
661
669
691
734
749
811
857
878
924
963
1030
1062
455
478
492
528
526
543
588
586
635
672
700
726
771
826
861
504
529
544
579
581
600
644
648
703
743
768
802
845
905
939
401
423
436
472
466
482
526
519
563
596
626
643
689
739
775
673
700
720
751
765
790
831
862
931
983
997
1056
1091
1164
1196
522
547
563
598
601
621
665
671
727
769
794
830
872
934
968
COOLING CAPACITY IN GPM
MODEL NO.
MOTOR
HP
LPT 819
LPT 829
LPT 839
LPT 849
LPT 859
LPT 869
LPT 879
LPT 8112
LPT 8212
LPT 8312
LPT 8412
LPT 8512
LPT 8612
LPT 8712
LPT 8812
20
15
20
15
25
30
25
25
30
40
30
50
40
50
50
TEMP °F
EWT
LWT
WB
95°
85°
76°
100°
85°
76°
95°
85°
78°
97°
87°
78°
100°
85°
78°
102°
87°
78°
95°
85°
80°
97°
87°
80°
100°
85°
80°
102°
87°
80°
631
659
677
709
721
744
786
809
876
924
941
995
1032
1102
1134
493
517
532
567
568
587
631
634
687
727
753
785
828
887
921
542
567
584
618
622
643
687
696
754
797
820
860
901
964
998
672
699
718
749
763
788
829
859
929
980
994
1053
1088
1161
1194
430
453
466
502
498
515
559
555
602
637
666
688
733
786
822
525
550
566
601
604
624
668
674
731
773
798
834
876
938
972
439
462
475
511
507
525
569
565
613
649
678
701
746
800
835
571
597
614
648
655
676
720
732
794
838
860
904
944
1009
1042
357
380
391
426
417
432
475
465
504
534
566
577
623
668
705
455
477
491
527
525
542
587
585
634
671
699
725
770
825
860
Note: For alternate selections and conditions other than those stated, consult your iES selection program or local EVAPCO representative.
30
† Mark Owned by the Cooling Technology Institute.
TECHNOLOGY
FOR
F U T U R E , AV A I L A B L E T O D AY !
THE
E N G I N E E R I N G D ATA & D I M E N S I O N S
3-1/4
3-1/4
47
75
8 BFW/GROOVED INLET
2-5/8
C
H
8 BFW/GROOVED OUTLET
(2) ACCESS
DOOR
P
79-3/4
MPT
OVERFLOW
36-1/4
7-1/4
20-1/8
2-5/8
O
1-3/8
47
M
MPT
MAKE-UP
MPT DRAIN
8-3/4
N
7' 10"
M
L
LOW PROFILE COOLING TOWERS
WEIGHT (LBS.)
MODEL
NO.
FAN
NO. MOTOR
SHIPPING OPERATING FANS HP**
AIR
FLOW
CFM
LPT 819 TO 8812
DIMENSIONS
H
L
P
C
0
N
M
CONNECTIONS (IN.)
WATER WATER MAKE
OVER
IN
OUT
UP
DRAIN FLOW
LPT 819
4220
7620
2
20
49270
6’ 11-1/2” 15’ 2-3/8”
6’ 5/8” 3’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 829
4290
7690
2
15
41610
6’ 11-1/2” 15’ 2-3/8”
6’ 5/8” 3’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 839
4220
7620
2
20
46850
6’ 11-1/2” 15’ 2-3/8”
6’ 5/8” 3’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 849
4460
7860
2
15
41020
7’ 11-1/2” 15’ 2-3/8”
7’ 5/8” 4’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 859
4320
7720
2
25
49340
6’ 11-1/2” 15’ 2-3/8”
6’ 5/8” 3’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 869
4340
7740
2
30
51110
6’ 11-1/2” 15’ 2-3/8”
6’ 5/8” 3’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 879
4490
7890
2
25
48680
7’ 11-1/2” 15’ 2-3/8”
7’ 5/8” 4’ 11-1/4” 4’ 11-5/8” 5’ 7-5/8” 8’ 5-3/8”
8
8
1
2
3
LPT 8112
4760
9490
2
25
57240
6’ 11-1/2” 18’ 2-3/4”
6’ 5/8” 3’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8212
4830
9550
2
30
59530
6’ 11-1/2” 18’ 2-3/4”
6’ 5/8” 3’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8312
5080
9800
2
40
66940
6’ 11-1/2” 18’ 2-3/4”
6’ 5/8” 3’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8412
5110
9840
2
30
58650
7’ 11-1/2” 18’ 2-3/4”
7’ 5/8” 4’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8512
5190
9910
2
50
68790
6’ 11-1/2” 18’ 2-3/4”
6’ 5/8” 3’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8612
5410
10130
2
40
64560
7’ 11-1/2” 18’ 2-3/4”
7’ 5/8” 4’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8712
5520
10240
2
50
68790
7’ 11-1/2” 18’ 2-3/4”
7’ 5/8” 4’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
LPT 8812
5840
10550
2
50
68700
8’ 11-1/2” 18’ 2-3/4”
8’ 5/8” 5’ 11-1/4”
8’
8’ 7”
11’ 5-3/4”
8
8
2
2
3
Notes:
1) An adequately sized bleed line must be installed in the cooling tower system to prevent buildup of impurities in the recirculated water.
2) Do not use catalog drawings for certified prints. Dimensions subject to change.
3) For external static pressure up to 1/2”, use next size fan motor.
** One fan motor per unit.
31
®
E VA P C O P R O D U C T S
ARE
M A N U FA C T U R E D W O R L D W I D E .
W
World
Headquarters/
Re
Research and
D
Development Center
EVAPCO Facilities
EVAPCO, Inc. — World Headquarters & Research/Development Center
EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USA
PHONE: 410-756-2600 • FAX: 410-756-6450 • E-MAIL: marketing@evapco.com
EVAPCO North America
EVAPCO, Inc.
World Headquarters
P.O. Box 1300
Westminster, MD 21158 USA
Phone: 410-756-2600
Fax: 410-756-6450
E-mail: marketing@evapco.com
EVAPCO East
5151 Allendale Lane
Taneytown, MD 21787 USA
Phone: 410-756-2600
Fax: 410-756-6450
E-mail: marketing@evapco.com
EVAPCO Midwest
1723 York Road
Greenup, IL 62428 USA
Phone: 217-923-3431
Fax: 217-923-3300
E-mail: evapcomw@evapcomw.com
EVAPCO West
1900 West Almond Avenue
Madera, CA 93637 USA
Phone: 559-673-2207
Fax: 559-673-2378
E-mail: contact@evapcowest.com
EVAPCO Europe
Refrigeration Valves &
Systems Corporation
A wholly owned subsidiary of EVAPCO, Inc.
1520 Crosswind Dr.
Bryan, TX 77808 USA
Phone: 979-778-0095
Fax: 979-778-0030
E-mail: rvs@rvscorp.com
McCormack Coil Company, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
P.O. Box 1727
6333 S.W. Lakeview Boulevard
Lake Oswego, OR 97035 USA
Phone: 503-639-2137
Fax: 503-639-1800
E-mail: mail@mmccoil.com
EvapTech, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
8331 Nieman Road
Lenexa, KS 66214 USA
Phone: 913-322-5165
Fax: 913-322-5166
E-mail: marketing@evaptech.com
Tower Components, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
EVAPCO Iowa
925 Quality Drive
Lake View, IA 51450 USA
Phone: 712-657-3223
Fax: 712-657-3226
5960 US HWY 64E
Ramseur, NC 27316
Phone: 336-824-2102
Fax: 336-824-2190
E-mail: mail@towercomponentsinc.com
EVAPCO Iowa
Sales & Engineering
1234 Brady Boulevard
Owatonna, MN 55060 USA
Phone: 507-446-8005
Fax: 507-446-8239
E-mail: evapcomn@evapcomn.com
EVAPCO Newton
701 East Jourdan Street
Newton, IL 62448 USA
Phone: 618-783-3433
Fax: 618-783-3499
E-mail: evapcomw@evapcomw.com
EVAPCO...SPECIALISTS IN HEAT TRANSFER
PRODUCTS AND SERVICES.
5M/12-09/DGD
Bulletin 313A
Visit EVAPCO’s Website at:
EVAPCO Asia/Pacific
EVAPCO Europe, N.V.
European Headquarters
Industrieterrein Oost 4010
3700 Tongeren, Belgium
Phone: (32) 12-395029
Fax: (32) 12-238527
E-mail: evapco.europe@evapco.be
EVAPCO Asia/Pacific Headquarters
1159 Luoning Rd. Baoshan Industrial Zone
Shanghai, P. R. China, Postal Code: 200949
Phone: (86) 21-6687-7786
Fax: (86) 21-6687-7008
E-mail: marketing@evapcochina.com
EVAPCO Europe, S.r.l.
Via Ciro Menotti 10
I-20017 Passirana di Rho
Milan, Italy
Phone: (39) 02-939-9041
Fax: (39) 02-935-00840
E-mail: evapcoeurope@evapco.it
EVAPCO Europe, S.r.l.
Via Dosso 2
23020 Piateda Sondrio, Italy
EVAPCO Europe, GmbH
Bovert 22
D-40670 Meerbusch, Germany
Phone: (49) 2159-69560
Fax: (49) 2159-695611
E-mail: info@evapco.de
Flex coil a/s
Evapco (Shanghai) Refrigeration
Equipment Co., Ltd.
1159 Louning Rd., Baoshan Industrial Zone
Shanghai, P.R. China, Postal Code: 200949
Phone: (86) 21-6687-7786
Fax: (86) 21-6687-7008
E-mail: marketing@evapcochina.com
A wholly owned subsidiary of EVAPCO, Inc.
Knøsgårdvej 115
DK-9440 Aabybro Denmark
Phone: (45) 9824 4999
Fax: (45) 9824 4990
E-mail: info@flexcoil.dk
EVAPCO S.A. (Pty.) Ltd.
A licensed manufacturer of EVAPCO, Inc.
18 Quality Road
Isando 1600
Republic of South Africa
Phone: (27) 11-392-6630
Fax: (27) 11-392-6615
E-mail: evapco@icon.co.za
Tiba Engineering Industries Co.
A licensed manufacturer of EVAPCO, Inc.
5 Al Nasr Road St.
Nasr City, Cairo, Egypt
Phone: (20) 2-290-7483/(20) 2-291-3610
Fax: (20) 2-404-4667/ (20) 2-290-0892
E-mail: manzgroup@tedata.net.eg
http://www.evapco.com
Beijing EVAPCO Refrigeration
Equipment Co., Ltd.
Yan Qi Industrial Development District
Huai Rou County
Beijing, P.R. China, Postal Code: 101407
Phone: (86) 10 6166-7238
Fax: (86) 10 6166-7395
E-mail: evapcobj@evapcochina.com
Evapco Australia (Pty.) Ltd.
34-42 Melbourne Road
P.O. Box 436
Riverstone, N.S.W. Australia 2765
Phone: (61) 2 9627-3322
Fax: (61) 2 9627-1715
E-mail: sales@evapco.com.au
EvapTech Asia Pacific Sdn. Bhd
A wholly owned subsidiary of EvapTech, Inc.
IOI Business Park, 2/F Unit 21
Persiaran Puchong Jaya Selatan
Bandar Puchong Jaya,
47170 Puchong, Selangor, Malaysia
Phone: (60-3) 8070 7255
Fax: (60-3) 8070 5731
E-mail: marketing-ap@evaptech.com