Technical_Exhibit_07_Cooling_Tower_B6120.pdf

OPERATION & MAINTENANCE MANUAL

CY12 ROKFC IN-KIND, PN A12R263B,

TNG020B, NCO ACADEMY AND

TRANSIENT UPH

USAG HUMPHREYS, KOREA

CONTRACT NO. : 2012UMM1608

MECHANICAL

VOLUME. Ⅰ

KEANGNAM ENTERPRISES CO., LTD.

1) CT 1~4, COOLING TOWER

A. EQUIPMENT DESCRIPTION (& TECHNICAL DATA)

a. Item No ： 23 65 00 - 1

b. MFR & Model ： EVAPCO LRWB 8-7N12-ZDC

c. Address ： 5151 Allendale Lane

Taneytown, MD 21787 USA Phone: (410) 756-2600 Fax: (410) 756-6450 Email: marketing@evapco.com www.evapco.com

d. POU ： COOLING WATER GENERATION

e. Actual Data ： CTI CERTIFICATED, IBC COMPLIENT FACTORY

ASSEMBLED FORCED DRAFT CLOSED CIRCUIT COOLING

TOWER,

SGHC G235 HEAVY GAUGE MILL HOT-DIP GALVANIZED

STEEL CASING, COLD WATER BASIN AND PAN,

PVC DRIFT ELIMINATOR, BRASS FLOAT VALVE WITH

ADJUSTABLE FLOAT,

ALL TYPE 304 STAINLESS STEEL CONSTRUCTION PAN

STRAINER, HINGED DOOR ACCESS,

WASTE WATER BLEED LINE WITH ADJUSTABLE VALVE,

CLOSE-COUPLED CENTRIFUGAL PUMP WITH

MECHANICAL SEAL,

TOTALLY ENCLOSED PUMP MOTOR WITH PROTECTIVE

CANOPY FOR OUTDOOR OPERATION,

FORWARD CURVED CENTRIFUGAL FAN AND

STATICALLY BALANCED,

TOTALLY ENCLOSED, BALL BEARING TYPE ELECTRIC

MOTOR WITH 1.15 SERVICE FACTOR SUITABLE FOR

OUTDOOR SERVICE,

THE FAN DRIVE IS A MULTI-GROOVED, SOLID BACK,

REINFORCED NEOPLENE V-BELT TYPE WITH TAPER

LOCK SEAVES

DESIGNED FOR 150% OF THE MOTOR NAMEPLATE

HORSE POWER, FAN SHEAVE IS CONSTRCTED OF

ALUMINUM ALLOY,

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Bulletin 251B

LSWE

LRWB

† Mark owned by the Cooling Technology Institute

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Exclusive Thermal-Pak®Coil

• Providing Maximum

Efficiency Per Plan Area

Totally Enclosed Fan Motors

• Assures long life

• All normal maintenance can be performed quickly from outside the unit

• If required, motor may be easily removed

NEW!

• Motors are now located outboard on multi-motor units for even easier drive system access

• Premium efficient inverter-ready motors are standard

• 5 Year motor and drive warranty is standard

G-235 Heavy Mill-Dip Galvanized Steel Construction (Stainless steel available as an affordable option)

Totally Enclosed Pump Motors

• Helps assure long, trouble-free operation

NEW!

Clean Pan Design

• Sloped design allows water to drain completely from cold water basin

• Easier Removal of dirt and debris

NEW!

Drift Eliminators Located in Casing

• Drift eliminators integrate with coil casing section for easy mounting of ductwork, discharge hood and attenuation

©2010 EVAPCO, Inc.

Design and Construction Features The LSWE and LRWB units are a result of EVAPCO’s extensive experience in forced draft centrifugal fan designs. Both models are designed for easy maintenance and long, trouble free operation. These units are also designed with IBC Compliant construction and Certified Performance. All features shown are available on all models.

† Mark owned by the Cooling Technology Institute

Since 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:

� 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:

� Higher System Efficiency � Environmentally Friendly � Lower Annual Operating Costs � Reliable, Simple Operation and

Maintenance

With an ongoing commitment to Research & Develop-ment programs, EVAPCO provides the most advanced products in the industry – Technology for the Future, Available Today!

EVAPCO products are manufactured in 17 locations in 8 countries around the world and supplied through a sales network consisting of over 170 offices.

NEW!

Easy Field Assembly

• Ensures easy assembly and fewer fasteners

• Incorporates self-guiding channels to guide the coil casing section into position improving the quality of the field seam

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Principle of Operation The process fluid is circulated through the coil of the closed circuit cooler. Heat from the process fluid is dissipated through the coil tubes to the water cascading downward over the tubes.

Simultaneously air is blown through the unit by the fans and travels upward over the coil opposite the water flow. A small portion of the water is evaporated which removes the heat. The warm moist air is forced to the top of the closed circuit cooler by the fan and is discharged to the atmosphere. The remaining water falls to the sump at the bottom of the cooler where it is recirculated by the pump up through the water distribution system and back down over the coils.

EVAPCOAT Corrosion Protection System:

G-235 Hot-Dip Galvanized Steel 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.

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.

Stainless Steel Material Options The LRWB is standard with a stainless steel cold water basin.

Optional upgrades to stainless steel water touch basins, stain-less steel water touch units and all stainless steel construction are also available on the LRWB.

The LSWE is available with optional stainless steel cold water basins, water touch basins, water touch units and all stainless steel construction.

For more information on these stainless steel options, see your local Evapco sales representative

Cooling Coil Evapco Closed Circuit Coolers utilize EVAPCO’s proprietary Thermal-Pak® coil design which assures greater operating efficiency. The elliptical tube design allows for closer tube spacing, resulting in greater surface area per plan area than round-tube coil designs. In addition, the Thermal-Pak® design has lower resistance to airflow and also permits greater water loading, making the Thermal-Pak® coil the most effective design available.

The coils are manufactured from high quality steel tubing follow-ing the most stringent quality control procedures. Each circuit is inspected to ensure the material quality and then tested before being assembled into a coil. Finally, the assembled coil is pneu-matically tested at 400 psig under water to ensure it is leak free.

To protect the coil against corrosion, it is placed in a heavy steel frame and then the entire assembly is dipped in molten zinc (hot-dip galvanized) at a temperature of approximately 800°F.

Note: Closed circuit coolers should only be used on sealed, pressurized systems. Continual aeration of the water in an open system can cause corrosion inside the tubes of the cooler leading to premature failure.

Discharge Air

Entering Air

Fluid In

Drift Eliminators

Water Distribution

System

Fan & Fan Motors

Coil

Fluid Out

Thermal-Pak® Coil by EVAPCO

Round Tube Coil by Others

Example of an LSWE

DESIGN FEATURES

M8-14

Stainless Steel Coil Option NOW Evapco offers the optional .

Constructed with type 304L Stainless Steel, the TITAN COIL is manufactured using Evapco’s proprietary elliptical tube Thermal Pak® design upgraded to Xtra Tough construction featuring: Xtra Durability, Xtra Corrosion Resistance, and an Xtra long 5 YEAR Coil Warranty as standard.

Maintenance Free ZMII® Spray Nozzle Water Distribution System EVAPCO’S Zero Maintenance ZMII®

Spray Nozzle remains clog-free while providing even and constant water distribution for reliable, scale-free evaporative cooling under all operating conditions.

The heavy duty nylon ZMII® Spray noz-zles have a 1-5/16” diameter opening and a 1-1/2” splash plate clearance. Further-more, the fixed position ZMII® nozzles are mounted in corrosion-free PVC water distribution pipes that have threaded end caps. Together, these elements combine to provide unequaled coil coverage and scale prevention, and make the industry’s best performing non-corrosive, mainte-nance-free water distribution system.

Efficient Drift Eliminators The LSWE & LRWB are provided with an efficient drift eliminator system that effectively reduces entrained water droplets from the air discharge to less than 0.001% of the spray water flow rate.

The eliminators are constructed of non-corrosive PVC with a multi-pass design for maximum drift reduction. They are assembled in modular sections for easy removal and access to the water distribution system.

In addition to reducing drift, the eliminators also function as effective debris screens which protect the spray system from sunlight and debris.

Thermal-Pak® Coil

LSWE and LRWB Drift Eliminator

Drift Eliminators Removed for Coil Inspection

U.

S.

P at en t #

,3

,8

ZMII® Nozzle

M8-15

Fan Motor Mount TEFC fan motors are mounted in a convienent open area for ease of belt tensioning, motor lubrication and electrical connection. The motor base is designed for easy adjustment and to be locked into position to maintain proper belt tension.

Fan Access-Split Housing Another unique feature of the LRWB Closed Circuit Cooler is the split fan housing. The split fan housing on the LRWB allows quick removal of the fans from the front end of the unit. This feature allows fan removal when units are placed side by side where space is minimal.

Mechanical Drive System Access The LSWE and LRWB mechanical drive systems are easy to maintain. Bearing lubrication and belt adjustment can be performed from outside the unit. There is no need to remove fan screens to maintain important drive components. In addition, the locking mechanism used to maintain belt tension can also work as a wrench to adjust the belt.

Centrifugal Fan Assembly Fans on LSWE and LRWB Closed Circuit Coolers are of the forward curved centrifugal design with hot-dip galvanized steel construction. All fans are statically and dynamically balanced and are mounted in a hot-dip galvanized steel housing.

Basin Access The LSWE drain pan is designed to improve maintenance access and make it easier for operating technicians to clean.

The bottom of the pan is sloped to the unit drain to ensure that the basin will completely drain and allow sediment and debris that may collect in the basin to be easily flushed from the unit.

The design helps to prevent buildup of sedimentary deposits, biological films and standing water.

Large circular access doors are provided to allow entry into the basin. All float valve and strainer assemblies are located near the door for easy adjustment and cleaning. The sump is designed to catch the dirt accumulated.

This can be flushed out simply with a hose. The stainless steel strainers may be easily removed for periodic cleaning.

Example LSWE Fan Motor Mount LRWB Fan Motor Mount (shown with optional pony motor)

Capacity Control All LSWE and LRWB models come standard with premium effi-cient, inverter capable fan motors that can be used with variable frequency drive (VFD) systems for precise capacity control. VFD systems can control the speed of a fan motor by modulating the voltage and frequency of the motor input electrical signal. When connected to a building automation system a VFD can receive signals varying fan speeds to meet demand loads. This popular method of capacity control can yield significant energy savings.

Evapco offers two-speed fan motors as an option for alternative capacity control. In periods of lightened loads or reduced wet bulb temperatures the fans can operate at low speed providing about 60% of full speed capacity yet consuming only about 15% of full speed power. In addition to the energy savings the sound levels of the unit can be greatly reduced by operating at low speed. These motors do not require the use of VFD systems however they can only operate at two speeds: full or low.

Pony motors are available as another capacity control method.

Pony motors are smaller fan motors for use in times of reduced loading. The pony motor is typically 1/4 of the Hp of the primary motor and can significantly reduce energy requirements.

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LRWB Reduced Height and Maintenance Accessibility The LRWB has been designed to satisfy installation requirements where height limits must be observed. The lower profile design of the LRWB does not, however, sacrifice maintenance accessibility for reduced height. Its unique casing design allows the water distribution system, cold water basin, fan section and other unit components to be easily maintained.

Small, light-weight sections of the drift eliminators can be easily removed to access the water distribution system. A large circular access door is located on the side of the cold water basin to allow adjustment of the float assembly, removal of the stainless steel strainers and cleaning of the basin. The fan motor and drive system are located at one end of the unit and are completely accessible by removing the inlet screens. Routine bearing lubrication and belt tensioning can be performed from the exterior of the unit without removing the inlet screens.

Low Installed Costs The compact, unitary design of the LRWB closed circuit cooler allows it to be shipped completely assembled. This results in lower transportation costs and no assembly requirements at the job site. Note: Options such as sound attenuation and discharge hoods will require additional lifts and some minor assembly.

Transport of a Pre-Assembled Unit Since the LRWB ships fully assembled, it is ideal for truck-mounted applications, for remote sites or temporary installations.

Stainless Steel Cold Water Basin–Standard The LRWB is standard with a stainless steel cold water basin.

Optional upgrades to stainless steel water touch basins, stainless steel water touch units and all stainless steel construction are also available on the LRWB.

Integral Fan Enclosure for Lower Sound The LRWB comes standard with an integral fan enclosure that reduces sound levels by 2 dB. This 3-sided enclosure also protects the fan and drive system for longer equipment life.

H =

M

6’ 1-1/4” to 9’ 3-3/4”

M

Fan Enclosure

SPECIFIC DESIGN FEATURES

M8-17

Very Quiet Operation Centrifugal fan units operate at low sound levels which make this design preferred for installations with external static pressure where noise is a concern. 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. See the Sound Reducing Options section of this catalog or consult the factory for details.

In addition, the LRWB features a specially engineered fan enclosure and drive system that is designed to offer very quiet operation without the high cost of external attenuation packages.

The LRWB fan system was developed through hundreds of hours of laboratory tests resulting in the lowest standardized sound levels available in the industry. In fact, the sound level of the LRWB on average is 2 dBA quieter than competitors’ similar models.

Indoor Installation All LSWE and LRWB Closed Circuit Coolers 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”.

2) For ducted installations, the solid bottom panel option must be ordered. On the LRWB blank off plates will also be provided in lieu of the side air inlet screens with this option.

3) NOTE: 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.

Application Versatility Centrifugal units are recommended for a wide range of installations. They are quiet, can easily be hidden, and the increase in fan HP over propeller fan units is generally not significant in the small size range. They are also excellent for installations where sound is sensitive, such as residential neighborhoods, and when the unit must handle external static pressure.

LSWE Unit LRWB Unit

ACCESS DOOR

ACCESS

DOOR

APPLICATION

M8-18

Design EVAPCO Closed Circuit Coolers are of heavy-duty construction and designed for long trouble-free operation. Proper equipment selection, installation and maintenance is, however, necessary to ensure full unit performance. Some of the major considerations in the application of a cooler are presented below. For additional information, contact the factory.

Air Circulation It is important that proper air circulation be provided. The best location is on an unobstructed roof top or on ground level away from walls and other barriers. Those closed circuit coolers located in wells, enclosures or adjacent to high walls must be properly located to avoid the problems associated with recirculation.

Recirculation raises the wet bulb temperature of the entering air causing the water temperature to rise above the design. For these cases, the discharge of the unit should be located at a height even with the adjacent wall, thereby reducing the chance of recirculation. For additional information, see the EVAPCO Equipment Layout Manual.

Good engineering practice dictates that the closed circuit cooler discharge air not be directed or located close to or in the vicinity of building air intakes.

Piping Cooler piping should be designed and installed in accordance with generally accepted engineering practices. The piping layout should be symmetrical on multiple unit systems, and sized for a reasonably low water velocity and pressure drop.

The standard closed circuit cooler is recommended only on a closed, pressurized system. The piping system should include an expansion tank to allow for fluid expansion and purging air from the system.

Note: Closed Circuit Coolers should never be used on an open type system. An open type system with a cooler may result in premature coil failure.

The piping system should be designed to permit complete drainage of the heat exchanger coil. This will require a vacuum breaker or air vent to be installed at the high point and a drain valve installed at the low point of the piping system. Both must be adequately sized.

All piping should be securely anchored by properly designed hangers and supports. No external loads should be placed upon the cooler connections, nor should any of the pipe supports be anchored to the cooler framework.

Recirculating Water Quality Proper water treatment is an essential part of the maintenance required for evaporative cooling equipment. A well designed and consistently implemented water treatment program will help to ensure efficient system operation while maximizing the equipment’s service life. A qualified water treatment company should design a site specific water treatment protocol based on equipment (including all metallurgies in the cooling system), location, makeup water quality, and usage.

Bleed off Evaporative cooling equipment requires a bleed or blowdown line, located on the discharge side of the recirculating pump, to remove concentrated (cycled up) water from the system. Evapco recommends an automated conductivity controller to maximize the water efficiency of your system. Based on recommendations from your water treatment company, the conductivity controller should open and close a motorized ball or solenoid valve to maintain the conductivity of the recirculating water. If a manual valve is used to control the rate of bleed it should be set to maintain the conductivity of the recirculating water during periods of peak load at the maximum level recommended by your water treatment company.

Water Treatment The water treatment program prescribed for the given conditions must be compatible with the unit’s materials of construction, including any galvanized components. The initial commissioning and passivation period is a critical time for maximizing the service life of galvanized equipment. Evapco recommends that the site specific water treatment protocol includes a passivation procedure which details water chemistry, any necessary chemical addition, and visual inspections during the first six (6) to twelve

(12) weeks of operation. During this passivation period, recirculating water pH should be maintained above 7.0 and below

8.0 at all times. Batch feeding of chemicals is not recommended.

Control of Biological Contaminants Evaporative cooling equipment should be inspected regularly to ensure good microbiological control. Inspections should include both monitoring of microbial populations via culturing techniques and visual inspections for evidence of biofouling.

Poor microbiological control can result in loss of heat transfer efficiency, increase corrosion potential, and increase the risk of pathogens such as those that cause Legionnaires’ disease. Your site specific water treatment protocol should include procedures for routine operation, startup after a shut-down period, and system lay-up, if applicable. If excessive microbiological contamination is detected, a more aggressive mechanical cleaning and/or water treatment program should be undertaken.

PRODUCT APPLICATIONS

M8-19

Freeze Protection If the units are installed in a cold climate and operated year-round, freeze protection must be provided for the heat exchanger coil in the unit as well as for the recirculating water system.

Recirculating Water System Freeze Protection Options Remote Sump Configuration The surest way to protect the recirculating water system from freezing is with a remote sump. The remote sump should be lo-cated inside the building and below the unit. When a remote sump arrangement is selected, the spray pump is provided by others and installed at the remote sump. All water in the closed circuit cooler basin should drain to the remote sump when the spray pump cycles off.

Hot Water Coils Pan coils are available as an alternate to using electric basin heaters or a remote sump. Constructed of galvanized pipe and installed in the closed circuit cooler basin, they are supplied without controls and are ready for piping to an external hot water source. Pan water heater controls should be interlocked with the water circulating pump to prevent their operation when the pump is energized.

Basin Heater Package If a remote sump configuration is not practical, electric basin heater packages are available to keep the pan water from freezing when the unit cycles off. Water lines to and from the unit, spray pump and related piping should be heat traced and insulated up to the overflow level to protect from freezing.

The unit should not be operated dry (fans on, pump off) unless the basin is completely drained and the unit has been designed for dry operation. Consult the factory when dry operation is a requirement.

M

Unit Footprint kW (0°F) kW (-20°F) kW (-40°F)

4' x 6' (1) 2 (1) 3 (1) 4 4' x 9' (1) 3 (1) 4 (1) 5 4' x 12' (1) 3 (1) 5 (1) 7 4' x 18' (1) 5 (1) 7 (1) 9 5' x 12' (1) 4 (1) 6 (1) 8 5' x 18' (2) 3 (2) 4 (1) 12

8P' x 12' (1) 5 (1) 8 (1) 10 8P' x 18' (2) 4 (2) 6 (2) 7 8P' x 24' (2) 5 (2) 7 (2) 10 8P' x 36' (2) 7 (2) 12 (2) 15 10' x 12' (1) 7 (1) 10 (1) 15 10' x 18' (2) 5 (2) 7 (2) 10 10' x 24' (2) 7 (2) 10 (2) 15 10' x 36' (2) 10 (4) 7 (4) 9

LSWE Basin Heater Sizing

Coil Casing Footprint kW (0°F) kW (-20°F) kW (-40°F)

3' x 6' (1) 2 (1) 3 (1) 4 5' x 6' (1) 3 (1) 5 (1) 6 5' x 9' (1) 4 (1) 6 (1) 8

5' x 12' (1) 6 (1) 8 (1) 12 8' x 9' (1) 7 (1) 9 (1) 12 8' x 12' (1) 9 (1) 12 (1) 16

LRWB Basin Heater Sizing

FREEZE PROTECTION AND HEAT LOSS

M8-20

Heat Exchanger Coil Freeze Protection Options The simplest and most foolproof method of protecting the heat exchanger coil from freeze-up is to use a glycol solution. If this is not possible, an auxiliary heat load must be maintained on the coil at all times so that the water temperature does not drop below 50°F when the cooler is shut down and, a minimum recommended flow rate per unit as shown in the table below must be maintained. Refer to Heat Loss Data Table on page 16 for heat loss data.

If an anti-freeze solution is not used, the coil must be drained immediately whenever the pump is shut down or flow stops.

Care must be taken to ensure that the piping is sized to allow the water to flow quickly from the coil. This method of freeze control should only be used in an emergency situation. Coils should not be drained for an extended period of time. Leaving the coil drained and open to the atmosphere can cause corrosion inside the tubes which may lead to premature coil failure.

The amount of glycol required for a system will depend upon the total volume of water in the closed loop and the winter ambient conditions for the installation. The Engineering Data Tables presented on pages 23-39 provide the water volume contained inside the cooler coils to assist in this calculation.

Discharge Hoods with Positive Closure Dampers When a closed circuit cooler is used in a water-to-air heat pump system or in certain process cooling applications, a method of reducing the heat loss during idle periods of wintertime operation may be required. For these cases, an optional discharge hood with positive closure dampers and damper actuator is available.

The discharge hood with dampers is designed to minimize the heat loss from convective airflow through an idle cooler.

Further reductions in heat loss may be obtained with the addi-tion of insulation to the hood and casing, minimizing conductive heat losses. Insulation may be factory-installed on the hood and casing or field-installed by an insulation contractor.

The discharge hood and dampers are constructed of hot-dip gal-vanized steel. Hoods are equipped with access panels to facili-tate maintenance on the eliminators and water distribution system. The dampers, damper actuator and linkage are all fac-tory-assembled. Actuator controls and wiring are field-supplied by others. Damper actuators require 120 volt power supply.

The system control sequence should provide for dampers to be fully open before the fans are running and closed when the fans are off; the damper actuator must be interlocked with the temperature control system for this purpose. When a centrifugal fan model uses a tapered discharge hood, the next larger size fan motor must be used to overcome the additional static pressure.

Heat loss data is provided for standard units without hoods, with hoods and with hoods and insulation. Table ratings are based on 50°F water in the coil, -10°F ambient and 45 MPH winds (fan and pump off).

Unit Footprint Standard Unit Series Flow Unit (-Z) 4' x 6' 66 33 4' x 9' 66 33

4' x 12' 66 33 4' x 18' 66 33 5' x 12' 94 47 5' x 18' 94 47

8P' x 12' 148 74 8P' x 18' 148 74 8P' x 24' 296 148 8P' x 36' 296 148 10' x 12' 188 94 10' x 18' 188 94 10' x 24' 376 188 10' x 36' 376 188

Minimum Flow for Freeze

LSWE Minimim Flows for Freeze Protection

Coil Casing Footprint Standard Unit Series Flow Unit (-Z) 3' x 6' 60 30 5' x 6' 94 47 5' x 9' 94 47 5' x 12' 94 47 8' x 9' 148 74

8' x 12' 148 74

Minimum Flow for Freeze

LRWB Minimim Flows for Freeze Protection

FREEZE PROTECTION AND HEAT LOSS

L

LIFTING DEVICES W

DAMPER

ACTUATOR

DAMPER

ACTUATOR

AIR

INTAKE

SIDE

AIR

INTAKE

SIDE

H

L

ACCESS DOOR

ACCESS DOOR

LIFTING

DEVICES

W

H

Tapered Discharge Hood (See page 16 for dimensions)

Straight-Sided Discharge Hood (See page 16 for dimensions)

M8-21

Selections for LSWE Closed Circuit Coolers are available from Evapco’s evapSelect Equipment Selection Program.

Please contact your local sales representative for more information on the evapSelect program.

ACCESS

DOOR

M

M

ACCESS

DOOR

4-1/4

7' 10"

2 MPT

DRAIN

2-5/8

8-3/4 20-1/8

79-3/4

3 MPT

OVERFLOW

24-1/2 44-7/8

137-3/4 For models 8-4K12 to 8-7O12

101-3/8

L13-1/2

2 MPT MAKE-UP

7' 10"

L

3-1/4 TYP.

(2) 4 BFW

FLUID IN

(2) 4 BFW

FLUID OUT 5-1/4

E

A U

H

(2) 1/2 FPT VENT

FACE 1

FACE 2

FACE 2 FACE 1

PLAN VIEW

Engineering Data & Dimensions LRWB Models 8-3J9 to 8-7O12

† Model Number will end in “-Z” for units with Series Flow piping configuration. Series Flow units may require additional coil connections and will require crossover piping. Model numbers will include "C" for units with Stainless Steel coil(s), "I" for units with Intake Attenuation, "D" for units with Discharge Attenuation, "F" for units with Full Sound Attenuation, "T" for units with a Tapered Discharge Hood, and "S" for units with an option that negates CTI certification.

** Gallons shown is water in suspension in unit and piping. Allow for additional water in bottom of remote sump to cover pump suction and strainer during operation (12” would normally be sufficient).

�� When a remote sump arrangement is selected, the spray pump, suction strainer and associated piping are omitted; the unit is provided with an oversized outlet to facilitate drainage to the remote sump.

� Unit dimensions and coil connections may vary slightly from catalog. See factory certified prints for dimensions, quantity of coil connections, and piping configuration.

Coil connections are 4” bevel for weld (BFW). Other connection types such as grooved for mechanical coupling or flanged are also available as options.

Note: The number of coil connections doubles when the flow rate exceeds 900 gpm on 8x9 and 8x12 models. This required option is referred to as the High Flow coil configuration.

Coil LRWB Volume Gallons Conn. Operating Height Length Lower Upper Coil

Model Number† Shipping Operating HP CFM HP GPM (Gallons) Required** Size Weight (lbs.) H L E U A

LRWB 8-3J9 8,050 12,800 15 38,000 2 405 152 250 8" 9,630 6' 11-1/2" 15' 2-1/4" 3' 1/4" 3' 11-1/4" 19-1/2" LRWB 8-3K9 8,110 12,850 20 41,800 2 405 152 250 8" 9,680 6' 11-1/2" 15' 2-1/4" 3' 1/4" 3' 11-1/4" 19-1/2" LRWB 8-3L9 8,120 12,860 25 45,100 2 405 152 250 8" 9,690 6' 11-1/2" 15' 2-1/4" 3' 1/4" 3' 11-1/4" 19-1/2" LRWB 8-3M9 8,140 12,880 30 47,900 2 405 152 250 8" 9,710 6' 11-1/2" 15' 2-1/4" 3' 1/4" 3' 11-1/4" 19-1/2" LRWB 8-4J9 9,280 14,390 15 37,300 2 405 198 250 8" 11,220 7' 7" 15' 2-1/4" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4K9 9,330 14,440 20 41,000 2 405 198 250 8" 11,270 7' 7" 15' 2-1/4" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4L9 9,340 14,450 25 44,200 2 405 198 250 8" 11,280 7' 7" 15' 2-1/4" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4M9 9,360 14,470 30 46,900 2 405 198 250 8" 11,300 7' 7" 15' 2-1/4" 3' 1/4" 4' 6-3/4" 27" LRWB 8-5K9 10,850 16,380 20 40,200 2 405 245 250 8" 13,210 8' 2-1/2" 15' 2-1/4" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-5L9 10,860 16,390 25 43,300 2 405 245 250 8" 13,220 8' 2-1/2" 15' 2-1/4" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-5M9 10,880 16,410 30 46,000 2 405 245 250 8" 13,240 8' 2-1/2" 15' 2-1/4" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-4K12 11,260 18,380 20 47,900 3 545 262 360 10" 14,100 7' 7" 18' 2-5/8" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4L12 11,270 18,390 25 51,600 3 545 262 360 10" 14,110 7' 7" 18' 2-5/8" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4M12 11,300 18,410 30 54,800 3 545 262 360 10" 14,130 7' 7" 18' 2-5/8" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4N12 11,590 18,700 40 60,300 3 545 262 360 10" 14,410 7' 7" 18' 2-5/8" 3' 1/4" 4' 6-3/4" 27" LRWB 8-4O12 11,640 18,750 50 65,000 3 545 262 360 10" 14,470 7' 7" 18' 2-5/8" 3' 1/4" 4' 6-3/4" 27" LRWB 8-5L12 12,930 20,590 25 50,500 3 545 324 360 10" 16,310 8' 2-1/2" 18' 2-5/8" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-5M12 12,950 20,610 30 53,700 3 545 324 360 10" 16,330 8' 2-1/2" 18' 2-5/8" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-5N12 13,250 20,900 40 59,100 3 545 324 360 10" 16,620 8' 2-1/2" 18' 2-5/8" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-5O12 13,300 20,950 50 63,700 3 545 324 360 10" 16,670 8' 2-1/2" 18' 2-5/8" 3' 1/4" 5' 2-1/4" 34-1/2" LRWB 8-6M12 14,530 22,740 30 52,600 3 545 386 360 10" 18,460 8' 10" 18' 2-5/8" 3' 1/4" 5' 9-3/4" 42" LRWB 8-6N12 14,820 23,030 40 57,900 3 545 386 360 10" 18,740 8' 10" 18' 2-5/8" 3' 1/4" 5' 9-3/4" 42" LRWB 8-6O12 14,870 23,080 50 62,400 3 545 386 360 10" 18,800 8' 10" 18' 2-5/8" 3' 1/4" 5' 9-3/4" 42" LRWB 8-7M12 16,380 25,160 30 51,500 3 545 448 360 10" 20,880 9' 3-3/4" 18' 2-5/8" 3' 1/4" 6' 3-1/2" 47-3/4" LRWB 8-7N12 16,670 25,450 40 56,700 3 545 448 360 10" 21,170 9' 3-3/4" 18' 2-5/8" 3' 1/4" 6' 3-1/2" 47-3/4" LRWB 8-7O12 16,720 25,500 50 61,100 3 545 448 360 10" 21,220 9' 3-3/4" 18' 2-5/8" 3' 1/4" 6' 3-1/2" 47-3/4"

Weights (lbs.) Fans Spray Pump Remote Sump�� Dimensions�

LRWB 8-7N12 16,670 25,450 40 56,700 3 545 448 360 10" 21,170 9' 3-3/4" 18' 2-5/8" 3' 1/4" 6' 3-1/2" 47-3/4"

M8-26

M8-48

M8-49

M8-71

M8-72

M8-73