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Bulletin 325A S.I. Metric

®

ICT & AT-D Cooling Towers

Advanced Features In Induced Draft, Counterflow Towers Member C.T.I. Cooling Tower Institute

EVAPCO ICT & AT-D Cooling Towers

EVAPCO is dedicated to applying its experience and resources to advancements in cooling tower technology. The ICT & AT-D are a reflection of this commitment. The highly successful AT-Line has been expanded to include more models and a wider range of capacity. The product line now includes the ICT cooling tower, which is the direct drive line of induced draft towers with a cooling range of 140 to 680 KW, and the belt driven AT-D now available in models up to 12.110 KW. The additional models make the ICT & AT-D more versatile for large industrial projects and small HVAC applications. It is a heavy-duty cooling tower which saves space, blends easily with architectural designs and offers low operating costs­all important features to owners and operators. The ICT & AT-D incorporate durable construction with serviceability, ideally suiting it for industrial as well as commercial installations. The ICT & AT-D utilize an induced draft, counterflow design, THE MOST EFFICIENT DESIGN IN COOLING TOWERS. All of its major components­axial fans, inlet louvers, motors, and wet deck fill have been selected to ensure maximum efficiency with low energy consumption. The ICT & AT-D are designed for air conditioning and industrial water cooling applications. All components and materials were selected and tested by EVAPCO for demanding industrial service, thus assuring the cooling tower user of long life and reliable operation. The thermal performance of the ICT & AT-D, like all EVAPCO products, is backed by a full written guarantee. The performance of the ICT & AT-D was established in over 5,000 hours of laboratory testing of the smallest through the largest size units. These tests were performed in EVAPCO's environmental test chambers which are the largest of this type available. They were designed and equipped for the specific purpose of testing evaporative cooling equipment.

An Advanced Technology Design Manufactured to

ICT Direct Drive Models 140 to 680 KW

EVAPCO's new 1,860 square meter state-of-the-art Research Center at its Maryland World Headquarters is one of the largest of its type in the evaporative cooling industry and the most advanced.

© EVAPCO, INC. 1995

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EVAPCO High Quality Standards.

Features

Superior Corrosion Protection G-600 Hot-Dip Galvanized Steel Eliminates Need for Costly, Unreliable Epoxy Paint Finishes Easy Maintenance Reliable, Accessible Components Vertical Air Discharge Minimizes Possibility of Recirculation Efficient Drift Eliminators Solve Water Carryover Problems Reduce Water Usage Lower Operating Costs Reduced Plan Area Saving Costly Space Simplified Piping Streamlined Appearance and Lower Piping Costs Unique Louver Design Eliminates Splashout, Reduces Algae Industrial Grade Motors Totally Enclosed Motors Standard

AT-D Belt Drive Models 510 to 12.110 KW

NOTE: The availability of some unit sizes may vary due to shipping restrictions.

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Design Features

Vertical Air Discharge

The vertical air discharge of the ICT & AT-D unit reduces the chance of air recirculation, since the warm humid air is directed up and away from the unit. Layout considerations and positioning are greatly simplified for all unit sizes. As a result, the structural support costs for the cooling tower are held to a minimum. It is possible to locate the ICT & AT-D towers on a lighter roof, providing greater location flexibility. This makes the ICT & AT-D ideal for replacement applications.

Superior Louver Design

The air inlet louvers on the ICT & AT-D are constructed of corrosion-free PVC. They are a two pass design that eliminates splashout and reduces the potential for algae formation inside the tower. In single pass louver systems used by other manufacturers, circulating water droplets tend to splashout, especially when the fans are shut off. With the two pass louver system, the water droplets are captured on the inward sloping pass, eliminating splashout problems.

Refoulement d'Air

Entrée d'Air

Entrée d'Air

Another benefit of the new design is that the louvers completely enclose the basin area. Direct sunlight is blocked from the water inside the cooling tower, reducing the potential of algae formation. Water treatment and maintenance costs are substantially reduced. While effectively containing the recirculating water and blocking sunlight, the new louver design has a low pressure drop for efficient operation. Low fan energy consumption results with this superior louver system.

REFOULEMENT VERTICAL

Efficient Drift Eliminators

An extremely efficient drift eliminator system is standard on the ICT & AT-D. 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. With a low drift rate, ICT & AT-D cooling towers can be located in areas where minimum water carryover is critical, such as parking lots. 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.

Sun's Rays

Aspiration d'air

Louver System

LOUVER SYSTEM

Reliable Year Round Operation

The ICT & AT-D cooling tower is well suited for winter operation. With its counterflow design, the wet deck surface is encased, isolating the fill from freezing winds and thus inhibiting ice formation on the fill.

DRIFT ELIMINATOR

Less Operating Weight

The operating weight of the ICT & AT-D is significantly lower than other tower designs. Its basin design and smaller plan area requirements allow less water to be held in the unit during normal operation. Even though the unit itself is as heavy or heavier than other makes, its operating weight is typically 35% less.

Crossflow designs have a well-known tendency to form ice along the inlet louvers and fill during cold weather operation. A buildup of ice at this point can quickly reduce the unit capacity, require extensive downtime for removal, and may require costly repairs to the fill and louvers. The counterflow design of the ICT & AT-D reduces the chances of ice formation and eliminates fill collapse.

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Easy Maintenance Drive Systems

DIRECT DRIVE UNITS The smaller size ICT units, from 140 to 680 KW, are equipped with a direct drive fan system. The aluminium alloy fan is mounted on a Totally Enclosed motor for the ultimate in simplicity with the fewest moving parts. MOTOR MOUNT The fan motor and drive assmbly are designed to allow easy servicing of the motor and adjustment of the belt tension from the exterior of the unit. The motor is mounted on the outside on models AT 8-56D through AT 8-936D. A protective cover shields the motor and drive from the weather.

MODEL AT 8-56D to 8-936D

MODEL ICT 4-54 to 4-912

POWER-BAND DRIVE SYSTEM The AT-Line features a highly engineered belt drive system which has been proven successful in even the most severe cooling tower applications.

The fan motor and drive assembly on models AT 12-212D through AT 24-936D are also designed to allow easy servicing of the motor and adjustment of the belt tension from the exterior of the unit. The Totally Enclosed fan motor is located inside the fan casing on a rugged heavy-duty motor base. The innovative motor base features a unique locking mechanism for a positive adjustment. The motor base allows the motor to swing completely to the outside of the unit through a very large access door for easy servicing.

MODEL AT 12-212D to 24-936D

POWER-BAND DRIVE

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Design Features

ALUMINUM ALLOY PULLEYS Drive system pulleys located in the warm moist atmosphere inside the cooling tower are constructed of an aluminum alloy. The non-corrosive aluminum pulley is superior to steel which rusts and to nylon sheaves which tend to shrink and crack over a period of time. POWER-BAND DRIVE The Power-Band drive is a solid-back multigroove belt system that has high lateral rigidity. The belt is designed for cooling tower service, and is constructed of neoprene with polyester cords. For long life, the drive belt is sized for 150 percent of the motor nameplate horsepower. FAN SHAFT BEARINGS The fan shaft bearings on the AT-Line are specially selected to provide long life, minimizing costly downtime. They are rated for an L-10 life of 75,000 to 135,000 hours, making them the heaviest duty pillow block bearing available for cooling tower duty. Lubrication lines are extended to the side of the casing as a standard feature. This external location allows for easy servicing of the bearings and is another important advantage of EVAPCO equipment.

MOTOR ACCESS

ACCESSIBILITY AT 12-212D to AT 24-936D models have internal motors with the motor base adjustment extending to the outside of the unit for easy belt tensioning. The base is also designed to swing out through a very large 1.3 square meter access opening. This allows easy servicing of the motor.

On the AT-Line cooling tower, there is no need to stand inside the unit's basin water to service the bearings, belts or electrical equipment (as is the case with most crossflow units). In addition, there is generally no need for fan deck handrails or safety cages as all periodic maintenance and adjustments can be safely performed from the side of the unit.

BASIN ACCESS The basin section is open and easily accessible from ground level by simply removing the two fasteners on the inlet louver assembly. There is a depressed basin area which is designed to catch any accumulated dirt. The basin area is easily flushed out to the drain with a hose through any of the removable louver panels. Large access doors are also placed on the side of the unit for easy access to the water distribution system, drift eliminators and fan system.

WATER BASIN ACCESS

FAN DRIVE SYSTEM

ACCESSIBILITY AT 8-56D to AT 8-936D units have external motors with a protective cover that swings away to allow servicing and belt adjustment.

HINGED MOTOR COVER

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Materials of Construction

EVAPCOAT System

Historically, EVAPCO has been a leader in the design and implementation of corrosion protection techniques. EVAPCO's Research and Development has produced many design and material improvements to extend the life of cooling towers. EVAPCO offers as standard on all cooling towers the EVAPCOAT Corrosion Protection System. This system provides heavy gauge G-600 hot dip galvanized steel, 600 grams of zinc per square meter, for the basin, casing and fan sections. This is the heaviest coating available for extended corrosion resistance. The system also includes PVC water distribution headers, drift eliminators and inlet louvers. In addition, the suction strainers* are constructed of Type 304 stainless steel, which is standard on all EVAPCO products. These materials are provided to offer maximum corrosion protection at an economical price. * Units supplied with European Stratoplus finish are supplied with galvanized steel strainers.

All Stainless Steel Construction

For highly corrosive areas where the application requires greater product durability and corrosion protection with superior protection against fire hazards, EVAPCO offers the all stainless steel construction option. These units feature Type 304 stainless steel basin, casing and fan section construction complete with stainless steel internal frame supports. All panel and frame members are assembled utilizing stainless steel nut and bolt construction. The fan discharge cylinder is constructed of a noncorrosive material. The tower eliminators, water distribution system, inlet louvers and fill are all constructed of PVC.

EVAPCO'S Design Flexibility Ensures Customer Satisfaction . . .

EVAPCOAT System

· Materials of Choice: Select Components to Match Each Severe Duty Application. · Long Life: Designed and Built to EVAPCO's High Standard of Excellence.

EVAPCOAT System . . . Optional Materials of Construction

Type 304 Stainless Steel Basin

The ICT & AT-D modular design allows for specific areas to be enhanced for increased corrosion protection. The basin area of the cooling tower is normally exposed to the most severe duty. The basin section of the cooling tower is a critical component since it provides the structural base for the unit. In this area EVAPCO offers the optional stainless steel basin. Stainless steel is supplied for the entire basin area. All stainless construction in the basin provides the important advantage of both optimum structural integrity and maximum corrosion protection.

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Quality Construction

Cooling Tower Fill

The film type fill material used in the ICT & AT-D is specially designed to induce highly turbulent mixing of the air and water for superior heat transfer. Special drainage tips allow high water loadings without excessive pressure drop. The fill is constructed of inert polyvinyl chloride (PVC). It will not rot or decay and is formulated to withstand water temperatures of 55°C. 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.

Water Distribution System

The water distribution system is made of Class E PVC pipe and ABS plastic water diffusers for corrosion protection in this key area. The piping is easily removable for cleaning. The water diffusers have a minimum opening of 10 x 25 mm and are practically impossible to clog. They also have an anti-sludge ring extending into the headers to prevent dirt from building up in the diffuser opening.

FILL BUNDLE

WATER DISTRIBUTION SYSTEM

The fill selected for the ICT & AT-D has excellent fire resistant qualities. In tests conducted according to ASTM-E84-81a, its flame spread rating was 5. (The flame spread rating scale ranges from 0 for noncombustible to 100 for highly combustible.) A high temperature fill is available for water temperatures exceeding 55°C. Consult your EVAPCO representative for further details.

Stainless Steel Strainers

One other component of the cooling tower which is subject to excessive wear is the suction strainer. The EVAPCO standard for this very important part is Type 304 stainless steel on EVAPCOAT units. NOTE: Units supplied with European Stratoplus finish are supplied with galvanized steel strainers.

STRAINER

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Selection Procedure

Principle of Operation

Warm water from the heat source is pumped to the water distribution system at the top of the tower. The water is distributed over the wet deck fill by means of large orifice nozzles. Simultaneously, air is drawn in through the air inlet louvers at the base of the tower and travels upward through the wet deck fill opposite the water flow. A small portion of the water is evaporated which removes the heat from the remaining water. The warm moist air is drawn to the top of the cooling tower by the fan and discharged to the atmosphere. The cool water drains to the basin at the bottom of the tower and is returned to the heat source.

S.I. Metric Cooling Tower Selection

To size a cooling tower for any application it is necessary to know the volume of water to be cooled in l/s, the entering water temperature, the desired leaving water temperature, and the wet bulb temperature of the cooling tower location.

Example

To cool 80 l/s of water from 35°C to 29°C at a 24°C wet bulb temperature. Selection: 1. Determine the range through which the water is to be cooled: Entering Water Temperature ­ Leaving Water Temperature = Range (35° ­ 29° = 6°) 2. Determine the approach of the leaving water temperature to the wet bulb temperature: Leaving Water Temperature ­ Wet Bulb Temperature = Approach (29° ­ 24° = 5°) 3. Calculate the nominal ton load: kW Load = Flow rate (l/s) x Range (°C) x Constant (4.186) = = 80 x 6 x 4.186 = 2.009 kW 4. Determine the application factor by turning to the 24°C wet bulb table. Enter the top of the table in the 6° range column and read down to the horizontal line which represents 5° approach. Read the application factor which lies at the intersection of the two columns. Application Factor = 0,87

PRINCIPLE OF OPERATION

5. Determine Corrected Load: Nominal Load x Application Factor = Corrected Load 2.009 x 0,87 = 1.748 kW 6. Select the proper cooling tower by referring to the ICT & AT-D capacity curves, pages 14 to 18. Enter the chart at the design flow and read up to the corrected kW line. Select a tower whose curve lies above the intersection point of the l/s and corrected kW lines. For the example shown above, select the model AT 12-512D or alternate model AT 8-718D.

The spray pressure for all EVAPCO cooling towers will be between 7 kPa and 40 kPa at the inlet header. The actual spray pressure will be shown on the certified drawings which are prepared for each order. (For estimating and pump sizing purposes), use 35 kPa as nominal spray pressure.

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Application Factors

17° C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 ­ 2,05 1,86 1,69 1,55 1,43 1,32 1,23 1,14 1,07 1,00 ,94 ,89 ,84 ,79 ,76 ,72 ,69 ,67 ,64 ­ 4 2,01 1,81 1,64 1,51 1,38 1,28 1,19 1,11 1,04 ,98 ,92 ,87 ,82 ,78 ,74 ,71 ,68 ,65 ,63 ,61 ,59 5 1,80 1,62 1,48 1,36 1,25 1,17 1,09 1,02 ,96 ,91 ,86 ,81 ,77 ,73 ,70 ,67 ,64 ,61 ,59 ,57 ,56 6 1,62 1,46 1,34 1,24 1,14 1,07 1,01 ,95 ,89 ,84 ,80 ,76 ,72 ,68 ,65 ,63 ,60 ,58 ,56 ,54 ,53 7 1,47 1,33 1,23 1,14 1,05 ,99 ,93 ,88 ,83 ,79 ,75 ,71 ,67 ,64 ,61 ,59 ,57 ,55 ,53 ,51 ,50 8 1,35 1,23 1,14 1,05 ,98 ,92 ,87 ,82 ,78 ,74 ,70 ,66 ,63 ,60 ,58 ,56 ,54 ,52 ,50 ,49 ,47 9 1,25 1,14 1,05 ,97 ,91 ,85 ,81 ,77 ,73 ,69 ,66 ,62 ,60 ,57 ,54 ,52 ,51 ,49 ,47 ,46 ,45 10 1,16 1,06 ,97 ,90 ,85 ,80 ,76 ,72 ,68 ,65 ,62 ,59 ,56 ,54 ,51 ,49 ,48 ,46 ,45 ,43 ,42 11 1,09 ,99 ,91 ,85 ,80 ,76 ,72 ,68 ,65 ,62 ,59 ,56 ,54 ,51 ,49 ,47 ,45 ,44 ,42 ,41 ,40 RANGE--°C 12 13 1,01 ,93 ,86 ,80 ,76 ,72 ,68 ,65 ,61 ,58 ,56 ,54 ,51 ,49 ,47 ,45 ,43 ,42 ,40 ,39 ,38 ,95 ,87 ,81 ,76 ,71 ,68 ,64 ,61 ,58 ,56 ,53 ,51 ,49 ,46 ,44 ,43 ,41 ,40 ,38 ,37 ,36 14 ,89 ,82 ,77 ,72 ,67 ,64 ,61 ,58 ,56 ,53 ,51 ,49 ,46 ,44 ,42 ,41 ,39 ,38 ,37 ,36 ,35 15 ,83 ,78 ,73 ,68 ,64 ,61 ,58 ,56 ,53 ,51 ,49 ,46 ,44 ,42 ,41 ,39 ,38 ,36 ,35 ,34 ,33 16 ,79 ,74 ,69 ,65 ,61 ,58 ,56 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 17 ,75 ,70 ,66 ,62 ,59 ,56 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,31 ,31 18 ,71 ,67 ,63 ,59 ,56 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 19 ,68 ,64 ,60 ,56 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,36 ,35 ,34 ,32 ,31 ,30 ,29 ,28 20 ,65 ,61 ,57 ,54 ,51 ,49 ,47 ,45 ,43 ,42 ,40 ,38 ,37 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,27 21 ,63 ,59 ,55 ,52 ,49 ,47 ,46 ,44 ,42 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,30 ,29 ,28 ,27 ,26 22 ,60 ,56 ,53 ,50 ,47 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,34 ,33 ,32 ,31 ,29 ,28 ,27 ,26 ,26

18°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 2,20 1,97 1,78 1,63 1,48 1,37 1,26 1,17 1,09 1,02 ,96 ,90 ,85 ,80 ,76 ,72 ,69 ,67 ,64 ­ ­ 4 1,93 1,73 1,58 1,45 1,33 1,23 1,14 1,07 1,00 ,94 ,88 ,83 ,79 ,75 ,71 ,68 ,65 ,63 ,60 ,58 ,56 5 1,72 1,56 1,42 1,31 1,20 1,12 1,05 ,98 ,92 ,87 ,82 ,78 ,74 ,70 ,67 ,64 ,61 ,59 ,57 ,55 ,54 6 1,55 1,41 1,29 1,19 1,10 1,03 ,97 ,91 ,85 ,81 ,77 ,73 ,69 ,66 ,63 ,60 ,58 ,56 ,54 ,52 ,51 7 1,41 1,29 1,19 1,10 1,01 ,95 ,90 ,84 ,80 ,76 ,72 ,68 ,65 ,62 ,59 ,57 ,55 ,53 ,51 ,50 ,48 8 1,30 1,18 1,09 1,01 ,94 ,88 ,83 ,79 ,75 ,71 ,67 ,64 ,61 ,58 ,56 ,54 ,52 ,50 ,48 ,47 ,46 9 1,20 1,10 1,02 ,94 ,87 ,82 ,78 ,74 ,70 ,66 ,63 ,60 ,57 ,55 ,53 ,51 ,49 ,47 ,46 ,44 ,43 10 1,12 1,02 ,94 ,87 ,82 ,77 ,73 ,69 ,66 ,62 ,60 ,57 ,54 ,52 ,50 ,48 ,46 ,45 ,43 ,42 ,41 11 1,05 ,95 ,88 ,83 ,77 ,73 ,69 ,66 ,62 ,60 ,57 ,54 ,52 ,49 ,47 ,46 ,44 ,42 ,41 ,40 ,39 RANGE--°C 12 13 ,98 ,90 ,83 ,78 ,73 ,69 ,66 ,62 ,59 ,57 ,54 ,51 ,49 ,47 ,45 ,43 ,42 ,40 ,39 ,38 ,37 ,92 ,85 ,79 ,74 ,69 ,66 ,62 ,59 ,56 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,35 14 ,86 ,80 ,74 ,70 ,65 ,62 ,59 ,56 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,34 15 ,81 ,75 ,70 ,66 ,62 ,59 ,57 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 16 ,77 ,71 ,67 ,63 ,59 ,57 ,54 ,52 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,32 ,32 ,31 17 ,73 ,68 ,64 ,60 ,57 ,54 ,52 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,30 18 ,70 ,65 ,61 ,57 ,54 ,52 ,49 ,47 ,45 ,43 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,29 19 ,66 ,62 ,58 ,55 ,52 ,50 ,47 ,45 ,44 ,42 ,40 ,38 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 20 ,64 ,59 ,56 ,53 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 21 ,61 ,57 ,53 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,34 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,26 22 ,58 ,54 ,51 ,48 ,46 ,45 ,43 ,41 ,39 ,37 ,36 ,35 ,33 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,25

19°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 2,11 1,89 1,71 1,56 1,42 1,31 1,21 1,11 1,04 ,98 ,92 ,86 ,81 ,77 ,73 ,70 ,67 ,64 ­ ­ ­ 4 1,85 1,67 1,52 1,39 1,27 1,18 1,10 1,02 ,96 ,90 ,85 ,80 ,76 ,72 ,69 ,66 ,63 ,60 ,58 ,56 ,55 5 1,66 1,50 1,37 1,26 1,16 1,08 1,01 ,94 ,88 ,84 ,79 ,75 ,71 ,68 ,65 ,62 ,59 ,57 ,55 ,54 ,52 6 1,50 1,36 1,24 1,15 1,06 ,99 ,93 ,87 ,82 ,78 ,74 ,70 ,66 ,63 ,61 ,58 ,56 ,54 ,52 ,51 ,49 7 1,37 1,24 1,14 1,06 ,98 ,92 ,87 ,81 ,77 ,73 ,69 ,65 ,62 ,59 ,57 ,55 ,53 ,51 ,50 ,48 ,46 8 1,26 1,15 1,05 ,98 ,91 ,86 ,81 ,76 ,72 ,68 ,65 ,61 ,58 ,56 ,54 ,52 ,50 ,48 ,47 ,45 ,44 9 1,16 1,06 ,98 ,91 ,85 ,80 ,76 ,71 ,67 ,64 ,61 ,58 ,55 ,53 ,51 ,49 ,47 ,46 ,44 ,43 ,42 10 1,08 ,98 ,91 ,85 ,79 ,75 ,71 ,67 ,63 ,60 ,57 ,55 ,52 ,50 ,48 ,46 ,45 ,43 ,42 ,40 ,39 11 1,01 ,92 ,86 ,80 ,75 ,71 ,67 ,63 ,60 ,57 ,55 ,52 ,50 ,48 ,46 ,44 ,42 ,41 ,40 ,39 ,37 RANGE--°C 12 13 ,95 ,87 ,81 ,75 ,71 ,67 ,64 ,60 ,57 ,55 ,52 ,49 ,47 ,45 ,43 ,42 ,40 ,39 ,38 ,37 ,36 ,89 ,82 ,76 ,71 ,67 ,64 ,60 ,57 ,55 ,52 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,35 ,34 14 ,83 ,77 ,72 ,67 ,63 ,60 ,57 ,55 ,52 ,50 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 15 ,79 ,73 ,68 ,64 ,60 ,57 ,55 ,52 ,50 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 16 ,75 ,69 ,65 ,61 ,58 ,55 ,52 ,50 ,48 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,32 ,31 ,31 ,30 17 ,71 ,66 ,62 ,59 ,55 ,52 ,50 ,48 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,29 18 ,68 ,63 ,59 ,56 ,53 ,50 ,48 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,28 19 ,65 ,60 ,57 ,53 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 20 ,62 ,58 ,54 ,51 ,49 ,46 ,44 ,42 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 21 ,59 ,55 ,52 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,34 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,25 22 ,56 ,53 ,50 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,25 ,24

10

20°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12.0 12,5 13,0 3 2,02 1,81 1,64 1,50 1,35 1,25 1,15 1,06 ,99 ,93 ,87 ,82 ,77 ,74 ,70 ,67 ,64 ,62 ­ ­ ­ 4 1,78 1,61 1,46 1,34 1,22 1,13 1,04 ,97 ,91 ,86 ,81 ,76 ,73 ,69 ,66 ,63 ,61 ,58 ,56 ,54 ,53 5 1,60 1,45 1,31 1,21 1,11 1,04 ,96 ,90 ,85 ,80 ,76 ,71 ,68 ,65 ,62 ,60 ,57 ,55 ,53 ,52 ,50 6 1,45 1,31 1,20 1,10 1,02 ,96 ,89 ,84 ,79 ,75 ,71 ,67 ,64 ,61 ,58 ,56 ,54 ,52 ,51 ,49 ,47 7 1,32 1,20 1,10 1,02 ,94 ,88 ,83 ,78 ,74 ,70 ,66 ,63 ,60 ,57 ,55 ,53 ,51 ,49 ,48 ,46 ,45 8 1,21 1,10 1,02 ,94 ,87 ,82 ,78 ,73 ,69 ,65 ,62 ,59 ,56 ,54 ,52 ,50 ,48 ,47 ,45 ,44 ,42 9 1,12 1,02 ,94 ,87 ,81 ,77 ,73 ,68 ,65 ,61 ,58 ,55 ,53 ,51 ,49 ,47 ,46 ,44 ,43 ,41 ,40 10 1,04 ,95 ,88 ,82 ,76 ,72 ,68 ,64 ,61 ,58 ,55 ,52 ,50 ,48 ,46 ,45 ,43 ,41 ,40 ,39 ,38 11 ,97 ,89 ,83 ,77 ,72 ,68 ,64 ,61 ,58 ,55 ,52 ,50 ,48 ,46 ,44 ,42 ,41 ,39 ,38 ,37 ,36 RANGE--°C 12 13 ,91 ,84 ,78 ,73 ,68 ,65 ,61 ,58 ,55 ,52 ,50 ,47 ,45 ,43 ,42 ,40 ,39 ,38 ,36 ,35 ,34 ,86 ,79 ,74 ,69 ,65 ,61 ,58 ,55 ,52 ,50 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,35 ,34 ,33 14 ,81 ,75 ,70 ,65 ,62 ,58 ,55 ,53 ,50 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 15 ,77 ,71 ,66 ,62 ,59 ,56 ,53 ,50 ,48 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 16 ,72 ,67 ,63 ,59 ,56 ,53 ,50 ,48 ,46 ,44 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,30 ,29 17 ,69 ,64 ,60 ,57 ,53 ,51 ,48 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,28 18 ,66 ,61 ,57 ,54 ,51 ,49 ,46 ,44 ,42 ,40 ,38 ,37 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,27 19 ,63 ,58 ,55 ,52 ,49 ,47 ,45 ,42 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 20 ,60 ,56 ,52 ,50 ,47 ,45 ,43 ,41 ,39 ,37 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 21 ,57 ,54 ,50 ,48 ,46 ,44 ,41 ,39 ,38 ,36 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 22 ,55 ,51 ,48 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23

21°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9.5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,95 1,74 1,57 1,43 1,31 1,20 1,10 1,02 ,96 ,90 ,84 ,79 ,75 ,71 ,68 ,65 ,63 ­ ­ ­ ­ 4 1,71 1,54 1,40 1,28 1,18 1,09 1,01 ,94 ,88 ,83 ,78 ,74 ,70 ,67 ,64 ,61 ,59 ,56 ,55 ,53 ,51 5 1,53 1,38 1,26 1,16 1,07 ,99 ,93 ,87 ,81 ,77 ,73 ,69 ,66 ,63 ,60 ,58 ,55 ,54 ,52 ,50 ,48 6 1,39 1,26 1,15 1,06 ,99 ,92 ,86 ,80 ,76 ,72 ,68 ,65 ,62 ,59 ,56 ,54 ,52 ,51 ,49 ,47 ,45 7 1,27 1,15 1,06 ,98 ,91 ,85 ,80 ,75 ,71 ,67 ,64 ,60 ,58 ,55 ,53 ,51 ,50 ,48 ,46 ,45 ,43 8 1,16 1,06 ,98 ,91 ,85 ,79 ,75 ,70 ,66 ,63 ,60 ,57 ,54 ,52 ,50 ,49 ,47 ,45 ,44 ,42 ,41 9 1,08 ,99 ,90 ,84 ,79 ,74 ,70 ,66 ,62 ,59 ,56 ,53 ,51 ,49 ,47 ,46 ,44 ,43 ,41 ,40 ,39 10 1,00 ,91 ,85 ,79 ,74 ,70 ,65 ,62 ,58 ,56 ,53 ,50 ,48 ,46 ,45 ,43 ,41 ,40 ,39 ,38 ,37 11 ,93 ,86 ,80 ,75 ,70 ,66 ,62 ,59 ,56 ,53 ,50 ,48 ,46 ,44 ,42 ,41 ,39 ,38 ,37 ,36 ,35 RANGE--°C 12 13 ,88 ,81 ,75 ,70 ,66 ,62 ,59 ,56 ,53 ,50 ,48 ,45 ,44 ,42 ,40 ,39 ,38 ,36 ,35 ,34 ,33 ,83 ,76 ,71 ,66 ,63 ,59 ,56 ,53 ,50 ,48 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,35 ,34 ,33 ,32 14 ,78 ,72 ,67 ,63 ,60 ,56 ,53 ,50 ,48 ,46 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 15 ,74 ,68 ,64 ,60 ,57 ,54 ,51 ,48 ,46 ,44 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 ,29 16 ,70 ,65 ,61 ,57 ,54 ,51 ,49 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,29 ,28 17 ,66 ,62 ,58 ,55 ,52 ,49 ,47 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,28 ,27 18 ,63 ,59 ,55 ,52 ,50 ,47 ,45 ,43 ,40 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,27 ,26 19 ,61 ,56 ,53 ,50 ,48 ,45 ,43 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 20 ,58 ,54 ,51 ,48 ,46 ,44 ,41 ,39 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 21 ,56 ,52 ,49 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 22 ,53 ,50 ,47 ,45 ,43 ,40 ,39 ,37 ,35 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22

22°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,88 1,67 1,51 1,37 1,25 1,15 1,06 ,98 ,91 ,86 ,80 ,76 ,72 ,69 ,66 ,63 ­ ­ ­ ­ ­ 4 1,65 1,49 1,34 1,22 1,13 1,04 ,97 ,90 ,84 ,79 ,75 ,71 ,68 ,64 ,62 ,59 ,57 ,55 ,53 ,51 ­ 5 1,48 1,33 1,21 1,11 1,03 ,95 ,89 ,83 ,78 ,74 ,70 ,66 ,63 ,60 ,58 ,56 ,54 ,52 ,50 ,48 ,46 6 1,34 1,21 1,11 1,02 ,95 ,88 ,82 ,77 ,73 ,69 ,65 ,62 ,59 ,57 ,55 ,53 ,51 ,49 ,47 ,45 ,44 7 1,23 1,11 1,02 ,94 ,88 ,82 ,77 ,72 ,68 ,64 ,61 ,58 ,56 ,54 ,51 ,50 ,48 ,46 ,44 ,43 ,41 8 1,13 1,03 ,94 ,87 ,81 ,76 ,71 ,67 ,63 ,60 ,57 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,42 ,41 ,39 9 1,04 ,95 ,87 ,81 ,76 ,71 ,67 ,63 ,60 ,57 ,54 ,51 ,49 ,48 ,46 ,44 ,42 ,41 ,40 ,38 ,37 10 ,96 ,88 ,81 ,76 ,71 ,67 ,63 ,59 ,56 ,53 ,51 ,48 ,47 ,45 ,43 ,42 ,40 ,39 ,37 ,36 ,35 11 ,91 ,83 ,77 ,72 ,67 ,63 ,60 ,56 ,53 ,51 ,48 ,46 ,44 ,42 ,41 ,39 ,38 ,37 ,36 ,35 ,34 RANGE--°C 12 13 ,85 ,78 ,73 ,68 ,64 ,60 ,57 ,53 ,51 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,34 ,33 ,32 ,80 ,74 ,68 ,64 ,60 ,57 ,54 ,51 ,48 ,46 ,43 ,41 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,32 ,31 14 ,76 ,70 ,65 ,61 ,57 ,54 ,51 ,48 ,46 ,44 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 ,29 15 ,72 ,66 ,62 ,58 ,55 ,52 ,49 ,46 ,44 ,42 ,40 ,38 ,36 ,35 ,34 ,33 ,31 ,31 ,30 ,29 ,28 16 ,68 ,63 ,59 ,55 ,52 ,50 ,47 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,29 ,28 ,27 17 ,65 ,60 ,56 ,53 ,50 ,48 ,45 ,43 ,40 ,38 ,37 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,27 ,26 18 ,62 ,58 ,54 ,51 ,48 ,46 ,43 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 19 ,59 ,55 ,52 ,49 ,46 ,44 ,42 ,39 ,38 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 20 ,57 ,53 ,49 ,47 ,44 ,42 ,40 ,38 ,36 ,35 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 21 ,54 ,51 ,48 ,45 ,43 ,41 ,39 ,37 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 22 ,52 ,48 ,46 ,44 ,41 ,39 ,37 ,36 ,34 ,32 ,31 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,22

Shaded areas of tables indicate water temperature exceeding maximum 55°C. Consult factory for alternate high temperature fill options.

11

Application Factors

23°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,79 1,60 1,44 1,30 1,19 1,09 1,01 ,94 ,87 ,82 ,77 ,72 ,69 ,66 ,63 ­ ­ ­ ­ ­ ­ 4 1,58 1,42 1,29 1,17 1,08 1,00 ,92 ,86 ,80 ,76 ,72 ,68 ,65 ,62 ,59 ,57 ,55 ,53 ,51 ­ ­ 5 1,42 1,28 1,16 1,07 ,98 ,91 ,85 ,80 ,75 ,71 ,67 ,64 ,61 ,58 ,56 ,54 ,52 ,50 ,48 ,46 ,44 6 1,28 1,16 1,06 ,98 ,91 ,85 ,79 ,74 ,70 ,66 ,63 ,60 ,57 ,55 ,53 ,51 ,49 ,47 ,45 ,44 ,42 7 1,17 1,07 ,98 ,90 ,84 ,79 ,74 ,69 ,65 ,62 ,59 ,56 ,54 ,52 ,50 ,48 ,46 ,44 ,43 ,41 ,40 8 1,08 ,98 ,90 ,84 ,78 ,73 ,69 ,64 ,61 ,58 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,42 ,41 ,39 ,38 9 1,00 ,91 ,84 ,78 ,73 ,68 ,64 ,60 ,57 ,54 ,52 ,50 ,48 ,46 ,44 ,43 ,41 ,40 ,38 ,37 ,36 10 ,92 ,85 ,79 ,73 ,69 ,64 ,60 ,57 ,54 ,51 ,49 ,47 ,45 ,43 ,42 ,40 ,39 ,37 ,36 ,35 ,34 11 ,87 ,80 ,74 ,69 ,65 ,61 ,58 ,54 ,51 ,49 ,46 ,44 ,43 ,41 ,40 ,38 ,37 ,36 ,35 ,33 ,32 RANGE--°C 12 13 ,82 ,75 ,70 ,65 ,61 ,58 ,55 ,51 ,49 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,34 ,33 ,32 ,31 ,77 ,71 ,66 ,62 ,58 ,55 ,52 ,49 ,46 ,44 ,42 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,31 ,31 ,30 14 ,73 ,67 ,63 ,59 ,55 ,52 ,49 ,47 ,44 ,42 ,40 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 15 ,69 ,64 ,60 ,56 ,53 ,50 ,47 ,44 ,42 ,40 ,38 ,36 ,35 ,34 ,33 ,31 ,31 ,30 ,29 ,28 ,27 16 ,66 ,61 ,57 ,54 ,50 ,48 ,45 ,43 ,40 ,38 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,28 ,27 ,26 17 ,62 ,58 ,54 ,51 ,48 ,46 ,43 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,27 ,26 ,25 18 ,60 ,56 ,52 ,49 ,46 ,44 ,42 ,39 ,37 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 19 ,57 ,53 ,50 ,47 ,45 ,42 ,40 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 .24 ,23 20 ,55 ,51 ,48 ,45 ,43 ,41 ,39 ,37 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,23 21 ,52 ,49 ,46 ,44 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 22 ,50 ,47 ,45 ,42 ,40 ,38 ,36 ,34 ,33 ,31 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,22 ,21

24°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,70 1,52 1,37 1,24 1,13 1,04 ,96 ,89 ,83 ,78 ,73 ,70 ,67 ,64 ,62 ­ ­ ­ ­ ­ ­ 4 1,50 1,35 1,22 1,12 1,02 ,95 ,88 ,82 ,77 ,73 ,69 ,65 ,62 ,60 ,57 ,55 ,53 ,51 ­ ­ ­ 5 1,35 1,22 1,11 1,02 ,94 ,88 ,82 ,76 ,72 ,68 ,64 ,61 ,58 ,56 ,54 ,52 ,50 ,48 ,46 ,44 ,42 6 1,22 1,11 1,02 ,93 ,87 ,81 ,76 ,71 ,67 ,63 ,60 ,57 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,42 ,40 7 1,12 1,02 ,93 ,86 ,81 ,75 ,71 ,66 ,62 ,59 ,56 ,54 ,52 ,50 ,48 ,46 ,44 ,43 ,41 ,40 ,38 8 1,03 ,94 ,87 ,80 ,75 ,70 ,66 ,62 ,58 ,56 ,53 ,51 ,49 ,47 ,45 ,44 ,42 ,40 ,39 ,37 ,36 9 ,95 ,87 ,81 ,75 ,70 ,66 ,62 ,58 ,55 ,52 ,50 ,48 ,46 ,44 ,43 ,41 ,40 ,38 ,37 ,36 ,34 10 ,88 ,81 ,75 ,70 ,66 ,62 ,58 ,55 ,52 ,49 ,47 ,45 ,43 ,42 ,40 ,39 ,37 ,36 ,35 ,34 ,32 11 ,83 ,77 ,71 ,66 ,62 ,59 ,55 ,52 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,31 RANGE--°C 12 13 ,78 ,74 ,72 ,68 ,67 ,64 ,63 ,59 ,59 ,56 ,56 ,53 ,52 ,50 ,49 ,47 ,47 ,44 ,44 ,42 ,42 ,40 ,40 ,38 ,39 ,37 ,38 ,36 ,36 ,34 ,35 ,33 ,34 ,32 ,33 ,31 ,32 ,30 ,31 ,29 ,30 ,28 14 ,70 ,64 ,60 ,56 ,53 ,50 ,47 ,45 ,42 ,40 ,38 ,37 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 15 ,66 ,61 ,57 ,54 ,51 ,48 ,45 ,43 ,40 ,38 ,37 ,35 ,34 ,33 ,31 ,30 ,30 ,29 ,28 ,27 ,26 16 ,63 ,59 ,55 ,51 ,49 ,46 ,43 ,41 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,27 ,26 ,25 17 ,60 ,56 ,52 ,49 ,47 ,44 ,42 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 18 ,57 ,53 ,50 ,47 ,45 ,42 ,40 ,38 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 ,23 19 ,55 ,51 ,48 ,45 ,43 ,41 ,39 ,36 ,35 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 ,23 ,23 20 ,53 ,49 ,46 ,44 ,41 ,39 ,37 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 21 ,50 ,47 ,45 ,42 ,40 ,38 ,36 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,22 ,21 22 ,48 ,46 ,43 ,41 ,38 ,37 ,35 ,33 ,31 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20

25°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,62 1,45 1,30 1,18 1,07 1,00 ,92 ,86 ,80 ,75 ,71 ,67 ,64 ­ ­ ­ ­ ­ ­ ­ ­ 4 1,44 1,29 1,17 1,06 ,98 ,91 ,85 ,79 ,74 ,70 ,66 ,63 ,60 ,58 ,55 ,53 ,51 ­ ­ ­ ­ 5 1,29 1,16 1,06 ,97 ,90 ,84 ,78 ,73 ,69 ,65 ,62 ,59 ,56 ,54 ,52 ,50 ,48 ,46 ,44 ,42 ,41 6 1,17 1,06 ,97 ,89 ,83 ,78 ,73 ,68 ,64 ,61 ,58 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,42 ,40 ,39 7 1,07 ,97 ,90 ,83 ,77 ,72 ,68 ,64 ,60 ,57 ,54 ,52 ,50 ,48 ,46 ,44 ,43 ,41 ,40 ,38 ,37 8 ,99 ,90 ,83 ,77 ,72 ,67 ,63 ,59 ,56 ,54 ,51 ,49 ,47 ,45 ,44 ,42 ,40 ,39 ,37 ,36 ,35 9 ,91 ,84 ,77 ,72 ,67 ,63 ,59 ,56 ,53 ,50 ,48 ,46 ,44 ,43 ,41 ,40 ,38 ,37 ,36 ,34 ,33 10 ,85 ,78 ,72 ,67 ,63 ,59 ,56 ,52 ,50 ,47 ,45 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,34 ,32 ,31 11 ,80 ,74 ,68 ,64 ,60 ,56 ,53 ,50 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,31 ,30 RANGE--°C 12 13 ,75 ,70 ,65 ,60 ,57 ,53 ,50 ,47 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,71 ,66 ,61 ,57 ,54 ,51 ,48 ,45 ,43 ,40 ,39 ,37 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,27 14 ,67 ,62 ,58 ,54 ,51 ,48 ,45 ,43 ,40 ,38 ,37 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 15 ,64 ,59 ,55 ,52 ,49 ,46 ,43 ,41 ,39 ,37 ,35 ,34 ,33 ,31 ,30 ,30 ,29 ,28 ,27 ,26 ,25 16 ,61 ,56 ,53 ,50 ,47 ,44 ,42 ,39 ,37 ,35 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,27 ,26 ,25 ,24 17 ,58 ,54 ,51 ,48 ,45 ,42 ,40 ,38 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 ,23 18 ,56 ,52 ,49 ,46 ,43 ,41 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 ,23 ,23 19 ,53 ,50 ,47 ,44 ,41 ,39 ,37 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 20 ,51 ,48 ,45 ,42 ,40 ,38 ,36 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 ,21 21 ,49 ,46 ,43 ,41 ,39 ,37 ,35 ,33 ,31 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,22 ,21 ,20 22 ,47 ,44 ,42 ,39 ,37 ,35 ,34 ,32 ,30 ,29 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,20

Shaded areas of tables indicate water temperature exceeding maximum 55°C. Consult factory for alternate high temperature fill options.

12

26°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,56 1,39 1,24 1,12 1,03 ,96 ,88 ,82 ,77 ,72 ,68 ,65 ­ ­ ­ ­ ­ ­ ­ ­ ­ 4 1,38 1,23 1,11 1,02 ,94 ,87 ,81 ,76 ,71 ,67 ,64 ,61 ,58 ,56 ,53 ,51 ­ ­ ­ ­ ­ 5 1,23 1,11 1,01 ,93 ,86 ,80 ,75 ,70 ,67 ,63 ,60 ,57 ,55 ,53 ,50 ,48 ,46 ,44 ,43 ,41 ,39 6 1,12 1,02 ,93 ,86 ,79 ,75 ,70 ,66 ,62 ,59 ,56 ,54 ,51 ,49 ,47 ,45 ,44 ,42 ,40 ,39 ,37 7 1,03 ,93 ,86 ,79 ,74 ,69 ,65 ,61 ,58 ,55 ,53 ,50 ,48 ,46 ,44 ,43 ,41 ,39 ,38 ,36 ,35 8 ,95 ,86 ,80 ,74 ,69 ,64 ,60 ,57 ,54 ,52 ,50 ,47 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,33 9 ,87 ,80 ,74 ,69 ,64 ,60 ,57 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,35 ,34 ,33 ,32 10 ,81 ,75 ,69 ,64 ,60 ,57 ,53 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,30 ,30 ,31 ,30 11 ,77 ,71 ,65 ,61 ,57 ,54 ,50 ,48 ,45 ,43 ,41 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,31 ,30 ,29 RANGE--°C 12 13 ,72 ,67 ,62 ,58 ,54 ,51 ,48 ,45 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,28 ,68 ,63 ,58 ,55 ,51 ,48 ,45 ,43 ,41 ,38 ,36 ,36 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 14 ,64 ,60 ,56 ,52 ,49 ,46 ,43 ,41 ,39 ,37 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 15 ,61 ,57 ,53 ,50 ,46 ,44 ,41 ,39 ,37 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,28 ,27 ,26 ,25 ,24 16 ,58 ,54 ,51 ,47 ,44 ,42 ,40 ,37 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 ,23 17 ,56 ,52 ,48 ,45 ,43 ,40 ,38 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 ,23 ,22 18 ,53 ,50 ,47 ,44 ,41 ,39 ,37 ,35 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 19 ,51 ,48 ,45 ,42 ,40 ,37 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 ,21 20 ,49 ,46 ,43 ,40 ,38 ,36 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 21 ,47 ,44 ,41 ,39 ,37 ,35 ,33 ,31 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,20 22 ,46 ,43 ,40 ,38 ,36 ,34 ,32 ,30 ,29 ,27 ,26 ,25 ,24 ,23 ,22 ,22 ,21 ,21 ,20 ,20 ,19

27°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,50 1,33 1,19 1,07 ,99 ,92 ,85 ,79 ,74 ,70 ,66 ,63 ­ ­ ­ ­ ­ ­ ­ ­ ­ 4 1,32 1,19 1,07 ,97 ,90 ,84 ,78 ,73 ,69 ,65 ,62 ,59 ,56 ,54 ,52 ,49 ­ ­ ­ ­ ­ 5 1,18 1,07 ,97 ,89 ,82 ,77 ,72 ,68 ,64 ,60 ,57 ,55 ,53 ,51 ,48 ,46 ,45 ,43 ,41 ,39 ,38 6 1,08 ,98 ,89 ,82 ,76 ,71 ,67 ,63 ,59 ,56 ,54 ,52 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 7 ,98 ,90 ,82 ,76 ,70 ,66 ,62 ,58 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,36 ,35 ,34 8 ,91 ,83 ,76 ,71 ,65 ,62 ,58 ,55 ,52 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,33 ,32 9 ,84 ,77 ,71 ,66 ,61 ,58 ,54 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,35 ,34 ,33 ,32 ,30 10 ,78 ,72 ,66 ,61 ,57 ,54 ,51 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,33 ,32 ,31 ,30 ,29 11 ,74 ,68 ,63 ,58 ,55 ,51 ,48 ,46 ,43 ,42 ,40 ,38 ,37 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 RANGE--°C 12 13 ,69 ,64 ,59 ,55 ,52 ,48 ,46 ,43 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,27 ,65 ,61 ,56 ,52 ,49 ,46 ,43 ,41 ,39 ,37 ,36 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 14 ,62 ,58 ,53 ,50 ,46 ,44 ,41 ,39 ,37 ,35 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 15 ,59 ,55 ,51 ,48 ,44 ,42 ,39 ,37 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,27 ,26 ,25 ,24 ,23 16 ,56 ,52 ,49 ,45 ,42 ,40 ,38 ,36 ,34 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 ,23 ,22 17 ,54 ,50 ,47 ,44 ,41 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,22 18 ,51 ,48 ,45 ,42 ,39 ,37 ,35 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,21 ,21 19 ,49 ,46 ,43 ,40 ,38 ,36 ,34 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,21 ,21 ,20 20 ,47 ,44 ,41 ,39 ,36 ,35 ,33 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,20 21 ,46 ,43 ,40 ,38 ,35 ,34 ,32 ,30 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,20 ,19 22 ,44 ,41 ,39 ,36 ,34 ,33 ,31 ,29 ,28 ,26 ,25 ,24 ,23 ,22 ,22 ,21 ,21 ,20 ,20 ,19 ,18

28°C WET BULB

Approach °C. 3,0 3,5 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 8,5 9,0 9,5 10,0 10,5 11,0 11,5 12,0 12,5 13,0 3 1,43 1,27 1,14 1,03 ,94 ,87 ,80 ,75 ,70 ,67 ,64 ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ 4 1,26 1,13 1,02 ,93 ,86 ,80 ,74 ,70 ,66 ,62 ,59 ,57 ,54 ,52 ,50 ­ ­ ­ ­ ­ ­ 5 1,14 1,03 ,93 ,85 ,79 ,74 ,69 ,65 ,61 ,58 ,55 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,39 ,38 ­ 6 1,03 ,94 ,86 ,79 ,73 ,68 ,64 ,60 ,57 ,54 ,52 ,50 ,48 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,34 7 ,95 ,86 ,79 ,73 ,67 ,63 ,59 ,56 ,53 ,51 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,36 ,35 ,34 ,33 8 ,87 ,80 ,73 ,68 ,63 ,59 ,55 ,53 ,50 ,48 ,46 ,44 ,42 ,41 ,39 ,37 ,36 ,35 ,33 ,32 ,31 9 ,81 ,74 ,68 ,63 ,59 ,55 ,52 ,49 ,47 ,45 ,43 ,41 ,40 ,38 ,37 ,35 ,34 ,33 ,32 ,30 ,29 10 ,76 ,69 ,64 ,59 ,55 ,52 ,49 ,46 ,44 ,42 ,40 ,39 ,37 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 11 ,71 ,65 ,60 ,56 ,52 ,49 ,46 ,44 ,42 ,40 ,38 ,37 ,36 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 RANGE--°C 12 13 ,67 ,62 ,57 ,53 ,49 ,46 ,44 ,41 ,39 ,38 ,36 ,35 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,63 ,58 ,54 ,50 ,47 ,44 ,41 ,39 ,37 ,36 ,35 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 14 ,60 ,55 ,51 ,48 ,45 ,42 ,39 ,37 ,36 ,34 ,33 ,32 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,23 15 ,57 ,53 ,49 ,46 ,43 ,40 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,26 ,25 ,24 ,23 ,22 16 ,54 ,50 ,47 ,44 ,41 ,38 ,36 ,34 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,25 ,24 ,23 ,22 ,21 17 ,52 ,48 ,45 ,42 ,39 ,37 ,35 ,33 ,31 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,21 ,21 18 ,50 ,46 ,43 ,40 ,38 ,35 ,33 ,32 ,30 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,21 ,21 ,20 19 ,48 ,45 ,42 ,39 ,36 ,34 ,32 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,24 ,23 ,22 ,21 ,21 ,20 ,19 20 ,46 ,43 ,40 ,37 ,35 ,33 ,31 ,29 ,28 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,19 ,19 21 ,44 ,41 ,39 ,36 ,34 ,32 ,30 ,29 ,27 ,26 ,25 ,24 ,23 ,23 ,22 ,21 ,21 ,20 ,19 ,19 ,18 22 ,43 ,40 ,37 ,35 ,33 ,31 ,29 ,28 ,26 ,25 ,24 ,23 ,22 ,22 ,21 ,21 ,20 ,20 ,19 ,18 ,18

Shaded areas of tables indicate water temperature exceeding maximum 55°C. Consult factory for alternate high temperature fill options.

13

Capacity Curves

MODELS

ICT 4-54 THRU ICT 4-912

CORRECTED KILOWATTS

NOTE: DO NOT EXCEED MINIMUM OR MAXIMUM l/s FOR EACH MODEL

l/s

14

MODELS

AT 8-56D THRU AT 8-912D

CORRECTED KILOWATTS

NOTE: DO NOT EXCEED MINIMUM OR MAXIMUM l/s FOR EACH MODEL

l/s

15

Capacity Curves

MODELS

AT 12-312D THRU AT 12-954D

NOTE: DO NOT EXCEED MINIMUM OR MAXIMUM l/s FOR EACH MODEL

CORRECTED KILOWATTS

l/s

16

ALTERNATE MODELS

AT 8-29D THRU AT 8-936D

NOTE: DO NOT EXCEED MINIMUM OR MAXIMUM l/s FOR EACH MODEL

CORRECTED KILOWATTS

l/s

Alternate models may be selected to meet specific layout requirements and local shipping restrictions.

17

Capacity Curves

MODELS

AT 24-218D THRU AT 24-936D

CORRECTED KILOWATTS

NOTE: DO NOT EXCEED MINIMUM OR MAXIMUM l/s FOR EACH MODEL

l/s

18

Engineering Dimensions & Data

Models ICT 4-54 to 4-912

ICT 4-54 THRU 4-96

ICT 4-59 THRU 4-912

MODEL NO. ICT 4-54 4-64 4-74 4-84 4-94 ICT 4-66 4-76 4-86 4-96 ICT 4-59 4-69 4-79 4-89 4-99 ICT 4-612 4-712 4-812 4-912

WEIGHTS (KG) Heaviest Shipping Operating Section 320 370 380 415 440 575 625 595 645 855 905 875 925 950 1130 1175 1195 1255 685 710 720 755 780 1085 1135 1100 1155 1590 1640 1615 1665 1685 2100 2145 2170 2225 320* 225* 240* 270* 270* 350* 400* 350* 400* 495* 545* 495* 545* 565* 665* 710* 705* 755*

Fan Motor (KW) 1,5 1,5 1,5 1,5 2,2 2,2 2,2 4,0 4,0 (2)1,5 (2)1,5 (2)2,2 (2)2,2 (2)2,2 (2)2,2 (2)2,2 (2)4,0 (2)4,0

Air Flow (M 3/S) 4,3 4,3 4,2 4,2 4,8 6,3 6,2 7,5 7,3 9,3 9,3 10,5 10,4 10,3 12,7 12,5 14,9 14,7

DIMENSIONS (mm) H 2312 2617 2617 2921 2921 2617 2921 2617 2921 2617 2921 2617 2921 2921 2617 2921 2921 2921 B 1302 1607 1607 1911 1911 1607 1911 1607 1911 1607 1911 1607 1911 1911 1607 1911 1911 1911 T 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 1010 L 1216 1216 1216 1216 1216 1826 1826 1826 1826 2731 2731 2731 2731 2731 3651 3651 3651 3651

CONNECTIONS (mm) Water Water Make OverIn Out Up Drain Flow 100 100 100 100 100 100 100 100 100 100 100 100 100 100 150 150 150 150 100 100 100 100 100 100 100 100 100 100 100 100 100 100 150 150 150 150 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50

NOTE: (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) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information. *Unit ships in one piece.

19

Engineering Dimensions & Data

Models AT 8-56D to 8-912D

AT 8-56D THRU 8-96D

AT 8-29D THRU 8-99D

AT 8-012D THRU 8-912D

WEIGHTS (KG) MODEL NO. AT 8-56D 8-66D 8-76D 8-86D 8-96D AT 8-29D 8-39D 8-49D 8-59D 8-69D 8-79D 8-89D 8-99D AT 8-012D 8-112D 8-212D 8-312D 8-412D 8-512D 8-612D 8-712D 8-812D 8-912D Shipping 1085 1170 1310 1325 1350 1535 1545 1630 1665 1650 1690 1895 1905 1980 1910 2230 2060 2030 2255 2310 2075 2325 2375 Heaviest Operating Section 1930 2020 2160 2175 2200 2750 2760 2845 2880 2865 2910 3110 3120 3620 3545 3870 3695 3665 3890 3945 3715 3965 4015 555 635 775 775 775 790 790 865 905 865 905 1115 1115 1055 955 1300 1110 1055 1300 1355 1110 1355 1250

Fan Motor (KW) 5,5 5,5 5,5 7,5 11,0 5,5 7,5 7,5 7,5 11,0 11,0 11,0 15,0 7,5 11,0 7,5 11,0 15,0 11,0 11,0 15,0 15,0 18,5

Air Flow (M3/S) 13,7 13,5 13,3 14,5 16,1 18,2 20,0 19,8 19,6 22,6 22,3 21,9 24,0 24,0 27,5 23,6 27,0 26,9 29,9 26,6 29,6 29,1 31,2

DIMENSIONS (mm) H 3026 3331 3636 3636 3636 3264 3264 3569 3569 3569 3569 3869 3869 3569 3264 3874 3569 3569 3874 3874 3569 3874 3874 B 1797 2102 2407 2407 2407 1940 1940 2245 2245 2245 2245 2545 2545 2245 1940 2550 2245 2245 2550 2550 2245 2550 2550 Water In 150 150 150 150 150 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200

CONNECTIONS (mm) Water Make Out Up Drain 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80

OverFlow 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80

NOTE: (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) On Models AT 8-29D through 8-912D, the motors are shipped loose for field mounting. (3) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information.

20

Models AT 8-318D TO 8-936D

AT 8-318D THRU 8-918D

MAKEUP

AT 8-324D THRU 8-924D

7366

AT 8-536D THRU 8-936D

MAKEUP

11081

WEIGHTS (KG) MODEL NO. AT 8-318D 8-418D 8-518D 8-618D 8-718D 8-818D 8-918D AT 8-324D 8-424D 8-524D 8-624D 8-724D 8-824D 8-924D AT 8-536D 8-636D 8-736D 8-836D 8-936D Shipping 3005 2890 3030 3110 3080 3180 3535 3915 4020 3795 4105 4490 4595 4700 5610 5965 6120 6705 7005 Heaviest Operating Section 5485 5370 5510 5595 5560 5660 6015 7190 7295 7070 7380 7765 7870 7975 10595 10950 11105 11690 11990 1555 1475 1555 1635 1555 1635 1985 1030 1085 965 1085 1280 1330 1330 955 1020 1070 1265 1320

Fan Motor (KW) (2) 5,5 (2) 7,5 (2) 7,5 (2) 7,5 (2)11,0 (2)15,0 (2)15,0 (2) 7,5 (2) 7,5 (2)15,0 (2)15,0 (2)15,0 (2)15,0 (2)18,5 (3)11,0 (3)15,0 (3)15,0 (3)15,0 (3)18,5

Air Flow (M3/S) 36,2 40,1 39,8 34,6 45,3 49,1 48,2 48,4 48,0 60,8 59,7 59,3 58,7 63,0 82,2 89,3 88,3 87,9 93,2

DIMENSIONS (mm) H 3781 3477 3781 3781 3781 3781 4086 3791 3781 3477 3781 4086 4086 4086 3477 3781 3781 4086 4086 B 2457 2153 2457 2457 2457 2457 2762 2457 2457 2153 2457 2762 2762 2762 2153 2457 2457 2762 2762 Water In (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (3)200 (3)200 (3)200 (3)200 (3)200

CONNECTIONS (mm) Water Make Out Up Drain 200 200 200 200 200 200 200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 (3)200 (3)200 (3)200 (3)200 (3)200 50 50 50 50 50 50 50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 80 80 80 80 80 80 80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (3)80 (3)80 (3)80 (3)80 (3)80

OverFlow 80 80 80 80 80 80 80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (3)80 (3)80 (3)80 (3)80 (3)80

NOTE: (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) On Models AT 8-318D through 8-936D, the motors are shipped loose for field mounting. (3) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information.

21

Engineering Dimensions & Data

Models AT 12-212D to 12-924D

AT 12-212D THRU 12-912D

3651

AT 12-218D THRU 12-918D

AT 12-324D THRU 12-924D

5486

7366

WEIGHTS (KG) MODEL NO. AT 12-212D 12-312D 12-412D 12-512D 12-612D 12-712D 12-812D 12-912D AT 12-218D 12-318D 12-418D 12-518D 12-618D 12-718D 12-818D 12-918D AT 12-324D 12-424D 12-524D 12-624D 12-724D 12-824D Shipping 3040 3055 3095 3275 3105 3310 3620 3635 4220 4255 4550 4585 5010 4720 5140 5165 6145 6225 6585 6660 7275 6680 Heaviest Operating Section 5325 5345 5380 5560 5390 5595 5905 5920 7625 7660 7955 7990 8415 8130 8545 8575 10720 10795 11160 11230 11850 11255 2050 2070 2105 2285 2115 2320 2630 2645 2765 2805 3105 3140 3555 3270 3690 3715 2070 2105 2285 2320 2630 2335

Fan Motor (KW) 11,0 15,0 18,5 15,0 22,0 18,5 18,5 22,0 18,5 22,0 18,5 22,0 22,0 30,0 30,0 37,0 (2)15,0 (2)18,5 (2)15,0 (2)18,5 (2)18,5 (2)22,0

Air Flow (M3/5) 37,7 41,3 44,3 40,6 46,9 43,4 42,8 45,3 59,4 62,9 58,4 61,9 60,8 67,7 66,6 71,4 82,3 88,6 81,1 87,0 85,5 92,1

DIMENSIONS (mm) H 4073 4073 4073 4378 4073 4378 4683 4683 4378 4378 4683 4683 4988 4683 4988 4988 4378 4378 4683 4683 4988 4683 T 2540 2540 2540 2845 2540 2845 3150 3150 2540 2540 2845 2845 3150 2845 3150 3150 2540 2540 2845 2845 3150 2845 Water In 200 200 200 200 200 200 200 200 250 250 250 250 250 250 250 250 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200

CONNECTIONS (mm) Water Make Out Up Drain 200 200 200 200 200 200 200 200 250 250 250 250 250 250 250 250 (2)200 (2)200 (2)200 (2)200 (2)200 (2)200 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80

OverFlow 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80

NOTE: (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) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information.

22

Models AT 12-136D to 12-954D

AT 12-136D THRU 12-936D

11036

AT 12-454D THRU 12-954D

16586

WEIGHTS (KG) MODEL NO. AT 12-136D 12-236D 12-336D 12-436D 12-536D 12-636D 12-736D 12-836D 12-936D AT 12-454D 12-554D 12-654D 12-754D 12-854D 12-954D Shipping 8405 8480 8555 9145 9215 10050 9485 10320 10380 12650 12760 13755 14150 15410 15495 Heaviest Operating Section 15220 15295 15370 15955 16030 16865 16300 17130 17190 22870 22980 23975 24370 25630 25715 2730 2765 2805 3100 3135 3555 3270 3690 3715 2770 2805 3140 3270 3690 3715

Fan Motor (KW) (2)15,0 (2)18,5 (2)22,0 (2)18,5 (2)22,0 (2)22,0 (2)30,0 (2)30,0 (2)37,0 (3)18,5 (3)22,0 (3)22,0 (3)30,0 (3)30,0 (3)37,0

Air Flow (M3/S) 107,6 115,8 122,7 114,0 120,7 118,6 132,0 129,8 139,3 172,7 183,4 180,4 197,4 194,1 208,4

DIMENSIONS (mm) H 4683 4683 4683 4988 4988 5293 4988 5293 5293 4683 4683 4988 4988 5293 5293 T 2540 2540 2540 2845 2845 3150 2845 3150 3150 2540 2540 2845 2845 3150 3150 Water In (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (3)250 (3)250 (3)250 (3)250 (3)250 (3)250

CONNECTIONS (mm) Water Make Out Up Drain (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (3)250 (3)250 (3)250 (3)250 (3)250 (3)250 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (3)80 (3)80 (3)80 (3)80 (3)80 (3)80

OverFlow (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (3)80 (3)80 (3)80 (3)80 (3)80 (3)80

NOTE: (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) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information.

23

Engineering Dimensions & Data

Models AT 24-218D to 24-936D

AT 24-218D THRU 24-918D

7344

AT 24-524D THRU 24-936D

7344

*Suction connections this end models AT 24-336D through AT 24-936D

WEIGHTS (KG) MODEL NO. AT 24-218D 24-318D 24-418D 24-518D 24-618D 24-718D 24-818D 24-918D AT 24-524D 24-624D 24-724D 24-824D 24-924D AT 24-336D 24-436D 24-536D 24-636D 24-736D 24-836D 24-936D Shipping 8390 8465 9055 9125 9965 9395 10230 10285 12205 12930 13080 14310 14355 16565 17745 17890 18035 18565 20235 20355 Heaviest Operating Section 15205 15275 15865 15940 16780 16205 17040 17100 22620 23345 23495 24725 24770 32140 33320 33465 33610 34140 35810 35930 2765 2805 3105 3140 3555 3270 3690 3715 2105 2285 2320 2630 2645 2765 3065 3105 3140 3270 3690 3715

Fan Motor (KW) (2)18,5 (2)22,0 (2)18,5 (2)22,0 (2)22,0 (2)30,0 (2)30,0 (2)37,0 (4)18,5 (4)15,0 (4)18,5 (4)18,5 (4)22,0 (4)18,5 (4)15,0 (4)18,5 (4)22,0 (4)30,0 (4)30,0 (4)37,0

Air Flow (M3/S) 115,8 122,7 113,8 120,7 118,4 132,0 129,8 139,4 173,0 158,8 170,3 167,3 177,3 221,4 203,3 218,3 230,9 252,8 248,7 267,0

DIMENSIONS (mm) H 4683 4683 4988 4988 5293 4988 5293 5293 5039 5344 5344 5648 5648 5039 5344 5344 5344 5344 5649 5649 T 2540 2540 2845 2845 3150 2845 3150 3150 2540 2845 2845 3150 3150 2540 2845 2845 2845 2845 3150 3150 L 5486 5486 5486 5486 5486 5486 5486 5486 7366 7366 7366 7366 7366 11036 11036 11036 11036 11036 11036 11036 Water In (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (4)200 (4)200 (4)200 (4)200 (4)200 (4)250 (4)250 (4)250 (4)250 (4)250 (4)250 (4)250

CONNECTIONS (mm) Water Make OverOut Up Drain Flow (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)250 (2)300 (2)300 (2)300 (2)300 (2)300 (4)250 (4)250 (4)250 (4)250 (4)250 (4)250 (4)250 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (2)50 (4)50 (4)50 (4)50 (4)50 (4)50 (4)50 (4)50 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (4)80 (4)80 (4)80 (4)80 (4)80 (4)80 (4)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (2)80 (4)80 (4)80 (4)80 (4)80 (4)80 (4)80 (4)80

NOTE: (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) Unit dimensions and connections are subject to change to meet application requirements and shipping restrictions. See factory certified prints for detailed drawing information.

24

Structural Steel Support

End Elevations

Plan Views

ICT 4-54 THRU 4-912

AT 24-218D THRU 24-936D

NOTES: 1. The recommended support for EVAPCO cooling towers is structural "I" beams located under the outer flanges and running the entire length of the unit. Mounting holes, 19 mm in diameter are located in the bottom flanges of the pan to provide for bolting to the structural steel. 2. Beams should be sized in accordance with accepted structural practices. Maximum deflection of beam under unit to be 1/360 of unit length, not to exceed 13 mm. 3. Deflection may be calculated by using 55% of the operating weight as a uniform load on each beam. See page 19 thru 24 for operating weight. 4. Beams should be level to within 3 mm in 2 m before setting the unit in place. Do not level the unit by shimming between it and the "I" beams. 5. Support beams and anchor bolts are to be furnished by others. 6. Dimensions, weights and data are subject to change without notice. Refer to factory certified drawings for exact dimensions.

DIMENSIONS (mm) MODEL NO. ICT 4-54 4-66 4-59 4-612 AT 8-56D 8-29D 8-012D 8-318D 8-324D 8-536D 12-212D 12-218D 12-324D 12-136D 12-454D 24-218D 24-524D 24-336D to 4-94 to 4-96 to 4-99 to 4-912 to 8-96D to 8-99D to 8-912D to 8-918D to 8-924D to 8-936D to 12-912D to 12-918D to 12-924D to 12-936D to 12-954D to 24-918D to 24-924D to 24-936D A 1216 1826 2731 3652 1826 2731 3652 5486 7366 11081 3652 5486 7366 11036 16586 5486 7366 11036 B 1226 1226 1226 1226 2388 2388 2388 2388 2388 2388 3607 3607 3607 3607 3607 7344 7344 7344

Vibration Isolators

The fans on EVAPCO cooling towers are balanced and run virtually vibration free. In addition, the rotating mass is very small in relation to the total mass of the cooling tower, further reducing the possibility of objectionable vibration being transmitted to the building structure. As a result, vibration isolation is generally not required. In those cases where it is determined that vibration isolation is necessary, spring type vibration isolators can be furnished. They are 90% efficient and have approximately 25 mm static deflection. Isolators are designed for wind loading up to 80 km/hr. It is important to note that vibration isolation must be installed continuously along the full length of the tower on both sides of the unit. Point isolators may be used between the supporting steel and building framework but not between the unit and the supporting steel. When rail type isolators are used, they can be mounted between the cooling tower and the supporting steel. The EVAPCO factory certified prints will provide detailed drawings for unit installation.

25

Optional Equipment

Electric Water Level Control

EVAPCO cooling towers are available with an optional electric water level control system in place of the standard mechanical makeup valve and float assembly. This package provides very accurate control for the basin water level and does not require field adjustment, even under widely variable operating conditions. The control was designed by EVAPCO and is manufactured exclusively for EVAPCO. It consists of multiple heavy duty stainless steel electrodes. These electrodes are mounted external to the unit in a vertical stand pipe. For winter operation, the stand pipe must be wrapped with electric heating cable and insulated to protect it from freeze up. The weather protected slow closing solenoid valve(s) for the makeup water connection is factory supplied and is ready for piping to a water supply with a pressure between 140 kPa and 340 kPa.

Two Speed Fan Motors

In most applications single speed fan motors will provide adequate control of the cooling tower capacity by cycling the fans on and off. For closer control of capacity, two-speed motors are available as optional equipment.

Variable Frequency Drives

Further capacity control is available through the use of variable frequency drives (VFD's). In response to changing wet bulb and load conditions, the air flow through the unit may be modulated by changing the fan speed so that the capacity of the unit may match the system load. For applications employing variable frequency drives, special inverter duty motors are available.

Concrete Basin (By Others)

For systems containing a large volume of water, a concrete basin is sometimes used. In these cases, a tower or set of towers are installed without the steel pan on a cast-in place concrete basin. All units are available for use on a concrete basin. The design and installation of the concrete basin is the responsibility of others. Consult the factory for application assistance.

Pan Freeze Protection

REMOTE SUMP Whenever a cooling tower is idle during sub-freezing weather, the water in the basin must be protected from freezing. 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 eliminated, and the unit is provided with an oversized water out connection. If a remote sump cannot be used, basin heaters are available, either steam, hot water or electric type to keep the basin water from freezing when the unit is shut down. Water lines to and from the unit must also be wrapped with electric heating cable and insulated to protect them from freeze-up. ELECTRIC HEATERS Electric immersion heaters are available factory installed in the basin of the tower. They are sized to maintain a +4,5°C pan water temperature with the fans off and an ambient air temperature of ­18°C. They are furnished with a thermostat to cycle the heater on when required. A low water protection device is included to prevent the control from energizing the heater elements unless they are completely submerged. All components are in weatherproof enclosures for outdoor use. The heater power contactors and electric wiring are not included as standard.

Cooling tower Type B with air inlet louvers, less basin CONCRETE BASIN

Electric Basin Heater Sizes

MODEL NO. 4-54 to 4-94 4-66 to 4-96 4-59 to 4-99 4-612 to 4-912 AT 8-56D to 8-96D 8-29D to 8-99D 8-012D to 8-912D 8-318D to 8-918D 8-324D to 8-924D ICT KW* 2 3 4 5 4 6 (2) 4 (2) 6 (4) 4 MODEL NO. 8-536D to 8-936D 12-212D to 12-912D 12-218D to 12-918D 12-324D to 12-924D 12-136D to 12-936D 12-454D to 12-954D 24-218D to 24-918D 24-524D to 24-924D 24-336D to 24-936D KW* (4) (2) (2) (4) (4) (6) (4) (6) (8) 6 6 8 6 8 8 8 8 8 Cooling tower Type C without basin or air inlet louvers CONCRETE BASIN

* Electric heater selection based on ­18°C ambient temperature. For alternate low ambient heater selections, consult factory.

26

Application

System Design

EVAPCO units are heavy-duty construction, designed for long life and trouble-free operation. Proper equipment selection, installation and maintenance is, however, necessary to insure good unit performance. Some of the major considerations in the application of a cooling tower are presented as follows. For additional information, contact your local EVAPCO representative.

Capacity Control

The design wet bulb for which the cooling 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 the leaving water is below the minimum allowable temperature. However this does not provide close control of the leaving water temperature. Another method is to use two-speed fan motors which add a second step of control. Two-speed motors are an excellent method of capacity control for the ICT & AT-D as well as for any cooling tower. This arrangement gives capacity steps of 10% (fans off), 60% (fans half-speed) and 100%. A temperature controller can be supplied to set control at 3°C increments, so fairly close temperature control can be maintained without excessive cycling of the fan motor. Two-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 very seldom coincide on air conditioning systems, the cooling tower will actually operate at half speed about 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 approximately 6dB when operating at half speed. Since both the load and 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. On multiple cell units the fan motors can be cycled on and off at different temperatures for capacity control. Or, fan cycling combined with two-speed motors can be used for more steps of control and greater power savings. This arrangement is simple, trouble-free and an inexpensive method of capacity control.

Air Circulation

It is important that a means for 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 cooling towers 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 temperatures to rise above design. For these cases, the discharge of the fan 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.

Maintaining the Recirculated Water System

Heat removal in a cooling tower is accomplished by the evaporation of a portion of the recirculated spray water. As this water evaporates, it leaves behind all of 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 buildup of impurities. If this is not done, the mineral content in the water will continue to increase until it starts to deposit out in the unit, causing heavy scaling. 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.

Piping

Cooling tower piping should be designed and installed in accordance with generally accepted engineering practice. All piping should be anchored by properly designed hangers 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 pipe supports be anchored to the unit framework.

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 galvanized construction of the unit. If acid is used for treatment, it should be accurately metered and the concentration properly controlled. The pH of the water should be maintained between 6.5 and 8.3. 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 recommended for use with galvanized construction should be used.

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 in conjunction with 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.

27

Cooling Tower Specifications

Furnish and install as shown on the plans an EVAPCO Model __________ induced draft counterflow cooling tower. Each unit shall have the capacity to cool _________ I/s of water from _________ °C to __________ °C with a __________ °C entering wet bulb temperature. Pan and Casing The pan and casing shall be constructed of heavy gauge G-600 hot-dip galvanized steel for long life and durability. Standard pan accessories shall include overflow, drain, Type 304 stainless steel strainers*, and brass make-up valve with plastic float. * Units supplied with European Stratoplus finish are supplied with galvanized steel strainers. Drive The fan drive shall be a multigroove, solid back V-belt type with taper lock pulleys designed for 150% of the motor nameplate KW. The belt material shall be neoprene reinforced with polyester cord and specifically designed for cooling tower service. Fan and motor pulleys shall be aluminium alloy construction. Belt adjustment shall be accomplished from the exterior of the unit. Bearing lubrication lines shall be extended to the side of the unit for easy maintenance. Axial Propeller Fans Fans shall be heavy duty axial propeller type statically balanced. The fans shall be constructed of aluminum alloy blades installed in a closely fitted cowl with venturi air inlet. Fan cowl shall be covered with a galvanized steel fan guard. Fan Shaft Bearings Fan shaft bearings shall be heavy duty self-aligning ball type with grease fittings extended to the outside of the unit. Bearings shall be designed for a minimum L-10 life of 75,000 hours. Fill The cooling tower fill shall be PVC of cross-fluted design for optimum heat transfer efficiency. The cross-fluted sheets shall be bonded together for strength and durability. The PVC fill shall be selfextinguishing for fire resistance with a flame spread rating of 5 per ASTM E84-81a. It shall also be resistant to rot, decay and biological attack. Water Distribution System The spray header shall be constructed of Class E PVC pipe for corrosion resistance and shall have a threaded connection to attach the external piping. The spray header shall be removable for cleaning purposes. The water shall be distributed over the fill by precision molded ABS spray nozzles with large 10 by 25 mm orifice openings to eliminate clogging. The nozzles shall be threaded into the distribution piping to assure positive positioning. Eliminators The eliminators shall be constructed entirely of inert PVC in easily handled sections. The eliminator design shall incorporate three changes in air direction to assure complete removal of all entrained moisture from the discharge air stream. Maximum drift rate shall be .001% or less of the circulating water rate. Louvers The louvers shall be constructed of PVC and shall be easily removable for access to the basin for maintenance. The louvers shall have a minimum of two changes in air direction to prevent splashout and block direct sunlight. Finish All pan and casing materials shall be constructed of G-600 heavy gauge mill hot-dip galvanized steel. During fabrication, all panel edges shall be coated with a 95% pure zinc-compound.

Direct Drive Models ICT 4-54 to ICT 4-912

Fan Motor(s) __________ HP totally enclosed fan-cooled, (TEFC) motor(s) with 1.25 service factor shall be furnished suitable for outdoor service on __________ volts, __________ hertz, and __________ phase. Drive The fan shall be mounted on the motor in a direct drive configuration.

Belt Drive Models AT 8-56D to AT 8-936D

Fan Motor(s) __________ HP, TEFC ball bearing fan motor(s) with 1.15 service factor shall be furnished suitable for outdoor service on __________ volts, __________ hertz, and __________ phase. Motor(s) shall be mounted on an adjustable base which is accessible from the outside of the unit for service. A swing away protective cover shall shield the motor and pulley from the weather. Drive The fan drive shall be a multigroove, solid back V-belt type with taper lock pulleys designed for 150% of the motor nameplate KW. The belt material shall be neoprene reinforced with polyester cord and specifically designed for cooling tower service. Fan pulley shall be aluminium alloy construction. Belt adjustment shall be accomplished from the exterior of the unit. Bearing lubrication lines shall be extended to the side of the unit for easy maintenance.

Belt Drive Models AT 12-212D to AT 24-936D

Fan Motor(s) __________ HP, totally enclosed air over (TEAO) ball bearing fan motor(s) with 1.15 service factor shall be furnished suitable for outdoor service on _________ volts, _________ hertz, and _________ phase. Motor(s) shall be mounted on an adjustable base which allows motor to swing to the outside of the unit for servicing

EVAPCO, INC. 5151 Allendale Lane, Taneytown, MD 21787 Ph: +1 410 756-2600 Fax: +1 410 756-6450 www.evapco.com EVAPCO MIDWEST, INC. 1723 York Road, Greenup, IL 62428 Ph: +1 217 923-3431 Fax: +1 217 923-3300 EVAPCO WEST, INC. 1900 Almond Avenue, Madera, CA 93637 Ph: +1 209 673-2207 Fax: +1 209 673-2378 REFRIGE. VALVES AND SYSTEMS 1520 Crosswind Drive Bryan, TX 77808 Ph: +1 409 778-0095 Fax: +1 409 778-0030 EVAPCO IOWA, INC. 925 Quality Drive, Lake View, IO 51450 Ph: +1 712 657-3223 Fax: +1 712 657-3226

EVAPCO EUROPE, N.V. Heersterveldweg, 19 Industriezone-Oost, B-3700 Tongeren, Belgium Ph: +32 12 395-029 Fax: +39 12 238-527 e-mail: [email protected] EVAPCO EUROPE, srl Via Ciro Menotti 10, 20017 Passirana di Rho, Milano, Italy Ph: +39 02.93.99.04.1 Fax: +39 02.93.50.08.40 e-mail: [email protected]it www.evapco.it EVAPCO EUROPE, srl Via Dosso 2, 23020 Piateda, Sondrio, Italy Ph: +39 0342.370.175 Fax: + 39 0342.370.575

EVAPCO (S.A.) PTY. LTD. 18 Quality Roads, Isando 1600 Republic of South Africa Ph: +27 11 392-6630 Fax: +27 11 392-6615 SHANGHAI HE ZHONGEVAPCO REFRIGERATION LTD. 855 Yang Tai Road Bao Shan Area Shanghai, P.R. China P.Code: 201901 Ph: +86 21 5680-5298 Fax: +86 21 5680-1545 BEIJING EVAPCO REFRIGERATION EQUIPMENT COMPANY LTD. Yan Qi Industrial Development District Huai Rou County, Beijing , P.R. China Code:101407 Ph: +86 10 6166-7238 Fax: +86 10 6166-7395 e-mail: [email protected]

AIR EVAPCO (LTD.) 92 Asma Fami Street AED El Golf, Heliopolis Cairo, Egypt Ph: +20 2 290-7483 Fax: +20 2 257-0892 Asia/Pacific Headquarters EVAPCO ASIA, LTD. Unit 1 G/F, Cloud Nine, 9 Plunkett's Rd The Peak, Hong Kong S.A.R. P.R. China Ph: +85 2 2849-4100 Fax: +85 2 2849-5233 e-mail: [email protected]

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