Direct Drive Fluid Coolers Catalog 607. Type AFS 005 through AFS 107 Type AFD 046 through AFD 212

Transcription

1 Direct Drive Fluid Coolers Catalog 607 Type AFS 005 through AFS 107 Type AFD 046 through AFD 212

2 Table of Contents Introduction...3 Product Offering...3 Design Features...4 Selection Procedure...6 Application Adjustment Factors...7 Performance Data...8 Electrical Data...13 Physical Data...16 Dimensional Data...18 Sound Data...20 Optional Features...20 Installation...21 Specifications...23 Document: CAT 607 Issue Date: February 2010 Replaces: Cat AFSD-2 Manufactured in an ISO Certified Facility 2013 Daikin Applied. Illustrations and data cover the Daikin Applied product at the time of publication and we reserve the right to make changes in design and construction at anytime without notice. 2 Fluid Coolers CAT 607

3 Introduction Our engineers have carefully selected and matched the components to provide superior performance, long service life, and a wide range of performance selections. Specifically engineered for outdoor installations, the fluid cooler is constructed of heavy gauge galvanized steel to resist corrosion in all climates. Fluid coolers are available in a wide range of sizes. Each model is available with several circuit options to provide the exact fluid cooler for your requirements. Our fluid coolers are designed to reduce the cost and time required for installation. Each unit is completely assembled and tested at the factory. All motor leads are wired to a weatherproof electrical enclosure providing a single point for field wiring. Product Offering AFS A C 0 SIZE VOLTAGE OPTION CONTROL OPTION ROUGH DUTY OPTION CIRCUIT FEED OPTION Model AFS RPM fan motors, single-row of fans AFD RPM fan motors, double row of fans Size Models 005 through 021 1/3 horsepower motors, 1140 RPM fan motors Models 023 through ½ horsepower motors, 1140 RPM fan motors Voltage Option 42 = 208/230 volts / 60 Hertz / 3-phase 27 = 460 volts / 60 Hertz / 3-phase 37 = 575 volts / 60 Hertz / 3-phase Special 208 volts / 60 Hertz/ 1-phase, 208/230/380/460 volts/50 Hertz/3-phase Control Option A = Fan Cycling Thermostat with Control Transformer (120V) E = Control Transformer Only (120V) Y = None (all categories) Rough Duty Options A = Totally enclosed motors B = Sealtite wiring, special water tight conduit system C = PolyGuard fin coating with totally enclosed motors and Sealtite wiring D = ElectroFin coating with totally enclosed motors and Sealtite wiring E = PolyGuard only F = ElectroFin only G = Copper fins only (not available on 5 or 6-fan length models) H = Copper fins with totally enclosed motors and Sealtite wiring J = Totally enclosed motors and Sealtite wiring Circuit Feed Option Equals the number of feeds (from the header to the first pass of tubes) from capacity tables. CAT 607 Fluid Coolers 3

4 Design Features Ease of Installation The fluid coolers are designed to reduce the cost and time required for installation. All lifting brackets are factory-installed, and the legs are designed for quick installation. Fan motors are factory wired to a control panel, providing a single point for field wiring. The control panel has a through-the-door disconnect switch. A wide variety of fan control panels can be factory mounted and wired, eliminating the need for a field-mounted, built-up control panel. Dynamic Stress Testing Fan motor and blade assemblies undergo dynamic stress testing. This testing measures the stress levels and frequency of vibration of the fan during actual operation of the cooler. This type of testing helps provide a design with low vibration levels and long, trouble-free service life of the air-moving assembly. Fluid Cooler Housing Cabinets are heavy-duty construction and designed for outdoor applications. Tube sheets and all structural members are fabricated from G90 galvanized steel. The remaining cabinet panels are fabricated from painted G90 galvanized steel for an attractive appearance and corrosion protection. Sheet metal components and fan guards are 500-hour, B117 salt spray rated. Coolers have unique internal frame design of heavy-gauge galvanized steel tube sheets and motor rails. Fan motors are bolted to motor rails for increased reliability and reduced noise and vibration. Full width fan baffles are provided to increase unit rigidity and prevent windmilling during fan cycling. Fluid Cooler Coils Coils are fabricated with corrugated aluminum fins with staggered copper tubes for optimum heat transfer. All units are pressure tested, dehydrated and pressurized before shipment. Anchor tube Floating Tube Design AFS 023 through AFD 212 fluid coolers use the Patented Floating Tube Design (U.S. Patent No. 5,158,134) to eliminate leaks at the tube sheets. Additional tubes are added to the coil. Floating heat transfer tube These tubes are expanded into the aluminum fins and condenser tube sheets. These anchor tubes support the weight of the coil, but are not a part of the fluid circuit. 4 Fluid Coolers CAT 607

5 The tubes in the fluid circuit are expanded into the fins, but float through oversized holes in the tube sheets. Tube sheet leaks are virtually eliminated, since the tubes that carry fluid never come in contact with the tube sheet. (Models AFS 005 through 021 are conventional, non-floating design.) Fan Motors The fan motors are high efficiency, three-phase motors designed for outdoor applications. Motors have thermal overload protection and fuses and have permanently lubricated ball bearings with direct drive fans at 1140 rpm, with 830 rpm available as a special. All motors are factory-wired to a control panel to provide a single point for field wiring. Fan contactors are definite purpose rated. Fan motors are suitable for 50 Hertz duty. Fan Blades Direct drive fan blades are designed to pull air through the cooler coil to help provide uniform air distribution over the entire coil. Fan blades have been selected and laboratory tested for optimum performance and minimum noise at each operating speed. Fan blades are aluminum and riveted to painted steel spider and hubs. Fan blades are statically and dynamically balanced. Fan Guards Fan guards are PVC-coated steel for maximum corrosion protection. Control Panel All fan motor leads are wired to a weatherproof electrical enclosure for single point field wiring. Fan Controls The standard arrangement consists of terminal connections for field supplied and installed controls to cycle fans in response to the leaving fluid temperature. An optional fan cycling control is available that consists of a factory mounted and wired temperature controllers for each fan motor or group of fan motors. They cycle fans in response to the leaving fluid temperature. Control circuit voltage is 115 volts standard. 24 and 230 volts are also available. There is one fan per step on single-row units and one fan per step on double row units except for the 12 fan unit, which has two sets of two fans each having one controller. The #1 fan on single-row units and the #1 and #2 fan on two-row units are on all the time. Fin Spacing Fin spacing of 12 fins-per-inch has been selected to provide the optimum performance. This fin spacing allows for easier cleaning and less blockage. Models AFD 178 and AFD 212 have 14 fins-per-inch, which is an option on other models. Fin spacing of 8 and 10 fins-per-inch is available as an option for locations with severe atmospheric fouling of coils. Model Sizes Sizes are available from 10 gpm through 500 gpm. A wide selection of circuiting maximizes performance at minimal cost. Listings Units are UL listed and either CSA or UL listed for Canada. The units are acceptable to the New York City Material and Equipment Acceptance Division. The MEA approval number is MEA E. CAT 607 Fluid Coolers 5

6 Selection Procedure In some cases with selections requiring six fans or less, units can be configured as either a long single-row unit or a shorter two row unit with the same total number of fans and approximate same capacity. Selection Formulas Design Capacity Btuh = gpm fluid temperature difference Table 1 fluid constant Average Fluid Temperature F = (entering temperature F + leaving temperature F) / 2 Initial Temp. Diff., ITD in degrees F = entering fluid temp. F entering air temp F Base Capacity Mbh = design cap Btu/h/(1000 ITD x Table 2 factor Table 3 factor) Fluid Pressure Drop = pressure drop ft. correction Table 4 Sample Selection direct drive 120 F leaving fluid temperature 50 gpm 100 F entering air temperature 20% ethylene glycol solution 20 feet maximum fluid pressure drop 130 F entering fluid temperature 1000 feet altitude Solution 1. Calculate design capacity from Table 1, select the fluid constant for 20% of 484. Design Capacity = 50 gpm x (130 F-120 F) 484 = 242,000 Btuh 2. Calculate average fluid temperature = (130 F F)/2 = 125 F 3. Calculate the initial temperature difference, ITD ITD = 130 F F = 30 degrees F 4. Determine capacity correction factor from Table 2, for a 20% solution and an average fluid temperature of 125 F, interpolate to obtain a correction factor of From Table 3, obtain an attitude correction factor at 1000 feet of Base Capacity = 242,000 Btu / (1000 x ) = 7.95 Mbh 6. Select the model and circuiting required from the capacity tables, locate the required gpm and read down until you find a capacity equal to or greater than your calculated base capacity. From Table 6, select a model AFS 016 with a capacity of 8.34 Mbh and a pressure drop of 15.1 ft. Read horizontally to the left for 32 Feeds (circuiting). 7. Calculate the pressure drop of the fluid. From Table 4, using 20% glycol solution and a 125 F average fluid temperature, interpolate to get a correction factor of Actual Pressure Drop = 15.1 ft x 0.86 = 13.0 ft Operating Limits 1. Maximum entering fluid temperature = 160 F (71 C). 2. Maximum entering air temperature as shown in the following table; Motor HP Motor RPM Maximum Temperature 1/ F (57 C) F (57 C) F (54 C) F (63 C) F (57 C) 6 Fluid Coolers CAT 607

7 Application Adjustment Factors Table 1, Fluid Constants Ethylene Glycol Propylene Glycol Percent EG Fluid Constant Percent PG Fluid Constant Table 2, Capacity Correction Factor Ethylene Glycol Propylene Glycol Percent Glycol Average Fluid Temperature F Average Fluid Temperature F Table 3, Altitude Correction Factor Altitude (Feet) Correction Factor Table 4, Correction Factors for Pressure Drop Ethylene Glycol Propylene Glycol Percent Glycol Average Fluid Temperature, F Average Fluid Temperature, F 50 F 70 F 90 F 110 F 130 F Table 5, Correction Factor for Fin Spacing Fins/inch Factor NOTE: Models AFD 178 and 212 have 14 fpi as standard and their rating takes this into account. Miscellaneous Factors Special single-phase motors: multiply catalog capacities by Hz operation: multiply capacity by 0.92 Optional 830-rpm motors: multiply capacity by 0.75 CAT 607 Fluid Coolers 7

8 Performance Data Table 6, Base Capacity at 10 to 60 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Fluid Temperature Gallons Per Minute AFS Feeds MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD * PD is glycol pressure drop in feet of water at 130 F fluid temperature. Mbh (Btuh x 1000) is unit base capacity (see selection example). Table 7, Base Capacity at 70 to 110 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Fluid Temperature Gallons Per Minute AFS Feeds MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD * PD is glycol pressure drop in feet of water at 130 F fluid temperature. Mbh (Btuh x 1000) is unit base capacity (see selection example). 8 Fluid Coolers CAT 607

9 Table 8, Base Capacity at 20 to 100 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Fluid Temp. (PD=ft.) Gallons Per Minute AFS Fan Feeds AFD Config MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD x x x x x x x x x x x x x x x x x x CAT 607 Fluid Coolers 9

10 Table 9, Base Capacity at 20 to 100 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Fluid Temp. (PD=ft) Gallons Per Minute AFS Fan Feeds AFD Config MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD x x x x x x x x x x x x x x x x x x * PD is glycol pressure drop in feet of water at 130 F fluid temperature. Mbh (Btuh x 1000) is unit base capacity (see selection example). 10 Fluid Coolers CAT 607

11 Table 10, Base Capacity at 120 to 280 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Temp., (PD=ft) Gallons Per Minute AFS Fan Feeds AFD Config MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD x x x x x x x x x x x x x x x x x x x x x x x x x x x x Table continued on next page. CAT 607 Fluid Coolers 11

12 Continued from previous page. AFS AFD Gallons Per Minute Fan Feeds Config MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD x x x x x x x x * PD is glycol pressure drop in feet of water at 130 F fluid temperature. Mbh (Btuh x 1000) is unit base capacity (see selection example). Table 11, Base Capacity at 300 to 500 GPM, MBH / TD, 40% Ethylene Glycol at 130 F Average Fluid Temp. AFD Feeds Fan Config. Gallons Per Minute MBH *PD MBH *PD MBH *PD MBH *PD MBH *PD x x x x x x x x x x x x x x x x x x x * PD is glycol pressure drop in feet of water at 130 F fluid temperature. Mbh (Btuh x 1000) is unit base capacity (see selection example). 12 Fluid Coolers CAT 607

13 Electrical Data 1140 RPM Motor Data Table 12, Electrical Data, Model 005 through 021, 1140 RPM AFS Model CFM Fans /3/60 460/3/ /1/60 Dia. Total Max Total Max Total No. HP MCA MCA HP MCA in. FLA Fuse FLA Fuse FLA 005 5, / / , / / , / / , / / , / / , / / , / / Notes: 1. Standard motor voltage /3/60. Table 13, Electrical Data, Models 023 through 212, 1140 RPM Model Fan Data /3/60 460/3/60 575/3/60 Fan No. of cfm Total Max. Total Max. Total MCA MCA MCA Config. Fans FLA Fuse FLA Fuse FLA AFS Single-row of Fans 023 1x2 2 19, x2 2 19, x2 2 19, x2 2 18, x3 3 29, x3 3 28, x3 3 28, x4 4 38, x4 4 37, x4 4 38, x4 4 35, x5 5 46, x5 5 46, x5 5 44, x6 6 55, x6 6 53, AFD Double Row of Fans 046 2x2 4 39, x2 4 39, x2 4 38, x2 4 37, x2 4 36, x3 6 59, x3 6 58, x3 6 57, x3 6, x4 8 77, x4 8 74, x4 8 72, x4 8 71, x , x , x , x , x x , x , All fan blades are 30 in diameter. 2. Standard motors are 1 ½ HP, /460/3/60 or 575 volt. 3. Optional single-phase motors are ¾ hp, 208/230 volt, 4.8 FLA, 1140 rpm. Max. Fuse Max Fuse CAT 607 Fluid Coolers 13

14 830 RPM Motor Data Table 14, Electrical Data, Models 023 through 212, 830 RPM Model Fan Config. Fan Data /3/60 460/3/60 575/3/60 No. of Fans Total FLA MCA Max. Fuse Total FLA AFS Single-row of Fans MCA Max. Fuse Total FLA 023 1x x x x x x x x x x x x x x x x AFD Double Row of Fans 046 2x x x x x x x x x x x x x x x x x x x x Notes: 1. All fan blades are 30 in diameter. 2. All motors are 1 HP, /460/3/60 or 575 volt RPM motors are not available in single-phase MCA Max. Fuse 14 Fluid Coolers CAT 607

15 Figure 1, Typical Wiring Diagram NOTE: The controller is a Johnson A419 Electronic Temperature Control with Display. CAT 607 Fluid Coolers 15

16 Physical Data The inlet and outlet connection size will be based on the number of feeds in the fluid cooler circuit. Use the tables below to determine connection sizes. Table 15, AFS , Connection Sizes Feeds Inlet / Outlet, in. Feeds Inlet / Outlet, in / / / / / / / /8 Table 16, AFS , Connection Sizes (Single-Row of Fans) Feeds Inlet / Outlet, in / / / / /8 3 5/8 Table 17, AFD Connection Sizes (Double-Row of Fans, Dual Fluid Connections) Feeds Inlet / Outlet, in / / / /8 2 5/ / /8 Table 18, Model 005 through 021, Physical Data Model Fan Configuration Fan Data Diameter of Fans Operating Charge, gal. Approx. Net Weight, lb. Approx. Shipping Weight, lb. Approx Operating Weight, lb x x x x x x x Net weight is dry unit only. 16 Fluid Coolers CAT 607

17 Table 19, Model 023 through 212, Physical Data Model Fan Configuration Fan Data Number of Fans CFM AFS Single-Row of Fans Operating Charge, gal. Approx. Net Weight, lb. Approx. Shipping Weight, lb. Approx. Operating Weight, lb x2 2 23, x2 2 23, x2 2 21, x2 2 20, x3 3 34, x3 3 32, x3 3 31, x4 4 46, x4 4 43, x4 4 42, x4 4 41, x5 5 54, x5 5 54, x5 5 51, x6 6 65, x6 6 62, AFD Double Row of Fans 046 2x2 4 46, x2 4 46, x2 4 43, x2 4 42, x2 4 41, x3 6 69, x3 6 67, x3 6 65, x3 6 63, x4 8 92, x4 8 87, x4 8 84, x4 8 83, x , x , x , x , x , x , x , Notes: 1. All fans are 30 inches in diameter. 2. Net weight is dry unit only. 3. Operating weight based on 50% ethylene glycol at 130 F. CAT 607 Fluid Coolers 17

18 Dimensional Data Figure 2, Dimensions for AFS 005 through AFS 021 with Vertical Flow 43 A 24 ½ Adjustable ½ (3) 7/8 Dia. 8¾ B Figure 3, Dimensions for AFS 005 through AFS 021 with Horizontal Flow 43 2 ½ 37 ½ 42 ½ (2) 7/8 Dia. 8¾ A B Notes: AFS Model Number of Dimensions (inches) Fans A B ¾ ¾ ¾ ¾ ¾ ¾ ¾ Inlet is the top connection, outlet the bottom. See Physical Data on page 16 for connection sizes. 2. The electrical box is on the same end as the fluid connections with knockouts on the bottom and sides. 18 Fluid Coolers CAT 607

19 Figure 4, Dimensions for AFS/D 023 through AFS/D 212 NOTES 1. Leg extension kits are available to raise unit by 30, 36, or 42 inches. 2. Inlet is the top connection, outlet the bottom. See Physical Data on page 16 for connection sizes. 3. The electrical box is on the same end as the fluid connections with knockouts on the bottom and sides. 4. AFD double-row units have two sets of connections and an optional field-installed header. 5. Allow one-inch manufacturing tolerance. CAT 607 Fluid Coolers 19

20 Sound Data Table 20, Sound Pressure Model No. Fans Sound Pressure, dba 1140 RPM Fans Distance from Side of Unit, ft. Sound Pressure, dba 830 RPM Fans Distance from Side of Unit, ft , 027, 031, 035 1x , 045, 049 1x , 061, 065, 071, 1x , 079, 089 1x , 107 1x , 054, 060, 066, 070 2x , 086, 090, 098 2x , 120, 132, 140 2x , 162, 168, 178 2x , 202, 212 2x Optional Features Alternate coil construction is available including copper fins, PolyGuard acylic coated fins (1000 hour, B117 salt spray) and ElectroFin dipped and coated coils (3000 hour, B117 salt spray). Copper fins are not available on units 5 or 6 fans in length, ElectroFin is not available on units 6 fans in length. AFS 005 through 021 models available in either horizontal or vertical air flow. Single-phase motors in lieu of standard motors which are /460 volt dual-voltage three-phase, or 575 volt three-phase. There is a significant capacity reduction with singlephase motors, see page 7. Fan cycling controls are available which cycle fans in response to fluid temperature. All controls are factory mounted and wired. Control circuit voltage is 115 volts standard, 24 and 230 volt controls are also available. Sizes available from 10 gpm through 500 gpm. A wide selection of circuiting maximizes performance at minimal cost. Totally enclosed fan motors for longer life and more resistance to severe atmospheric conditions. NEMA rated contactors in lieu of definite purpose contactors when required for specific duty or specifications. Sealtite motor wiring conduit for special duty, specification or code requirements. Call the local Daikin Applied sales office for your special requirements and requests. Extended leg kit to increase unit s height by 30, 36, or 42 inches. Field-installed manifold header kit for AFD units to provide a single-point fluid connection. 20 Fluid Coolers CAT 607

21 Installation Unit Location Units are designed for outdoor application and may be mounted on a roof or concrete slab (ground level installation). Install roof-mounted units on steel channels or an I-beam frame to support the unit above the roof. Use of vibration pads or isolators is recommended. The roof must be strong enough to support the weight of the unit. For ground level installation, mount units on a one-piece concrete slab with footings extending below the frost line. Be certain concrete slabs are installed level and are properly supported to prevent settling. Locate the unit far enough away from any wall or other obstruction to provide sufficient clearance for air entrance. Avoid air recirculation conditions that may be caused by sight screening walls, etc., and keep unit fan discharge away from any building air intakes. Do not install unit where exhaust or ventilation equipment will affect entering air temperature or foul coils. Sound and Vibration Install units away from occupied spaces, utility areas, corridors and auxiliary spaces to reduce the transmission of sound and vibration to occupied spaces. The fluid piping should be flexible enough to prevent the transmission of noise and vibration from the unit into the building. If the fluid lines are to be suspended from the structure of the building, use isolation hangers to prevent the transmission of vibration. Where piping passes through a wall, pack fiberglass and sealing compound around the lines to minimize vibration and retain flexibility. The unit must be secured in its final location. Holes are provided in the base runner for this purpose. Vertical airflow type units should be located per the following instructions. Leave sufficient free area around and below the unit to avoid air restriction to coil. Walls or Obstructions Locate the unit so air may circulate freely and not be recirculated. For proper airflow and access, all sides of the unit must be kept away from walls or obstructions per the diagram to the right. Increase this distance whenever possible. Be sure enough room is left for maintenance through access doors and panels. Overhead obstructions are not permitted. When enclosed by three walls, the unit must be installed as indicated for units in a pit. Multiple Units For units placed side by side, the minimum distance between units must be as shown to the right. If units are placed end to end, the minimum distance between units is 4 feet. AIR FLOW AIR FLOW AFS = 6 ft. AFD = 8 ft. AFS = 4 ft. AFD = 6 ft. AIR FLOW CAT 607 Fluid Coolers 21

22 Units in Pits Install the unit so the top is within two feet of the top of the pit, and side distance as shown to the right. If the top of the unit is not level with the top of pit, discharge cones or stacks must be used to raise discharge air to the top of the pit. This is a minimum requirement. Decorative Fences Fences must have 50% free area, with 1 foot undercut. Minimum clearance from walls must be as shown to the right, and walls must not exceed the top of unit. If these requirements are not met, unit must be installed as indicated for "Units in Pits". 1 IN. MIN. STACK (BY OTHERS IF SUPPLIED) AFS = 4 ft. AFD = 6 ft. AFS = 3 ft. AFD = 4 ft. AIR FLOW AIR FLOW 2 FT. MAX. AFS = 4 ft. AFD = 6 ft. AFS = 3 ft. AFD = 4 ft. General 1. The structure supporting the unit must be designed to support both the unit and the fluid. Table 21 provides the weight of ethylene glycol (EG) and propylene glycol (PG) per gallon. Unit weights can be found on page 16 and 17. The operating weight is based on 50% ethylene glycol at 130 F. Table 21 can be used to determine fluid weight at other concentrations. Table 21, Fluid Weight Per Gallon at 130 F Percent Glycol Pounds per Gallon Pounds per Gallon Ethylene Glycol Propylene Glycol 0 (Water) Provide suitable flashing of the roof, if this is a roof installation. For ground level mounting, a concrete pad is recommended. Mounting holes permit the units to be bolted down to withstand wind pressures. Provide adequate clearance for unobstructed air flow to the coils. Water piping must comply with local codes. Correct pipe sizing will help reduce pumping power and operating costs. 3. In case of doubt, consult the catalog for the dry cooler fluid pressure drop at the specific conditions on your job. 4. Provide sufficient valves and unions to permit easy access to parts subject to wear and possible repair or replacement. 5. Where city water make-up is required, follow local codes, making certain that disconnecting provisions are provided. The glycol system should not employ an automatic fill with a pressure-reducing valve. This is because a slight leak would lead to dilution of the mixture over time, and possible freeze potential. Any refill should be controlled so as to maintain the proper glycol-to-water ratio. 6. Select wire size in accordance with nameplate data and local codes. 22 Fluid Coolers CAT 607

23 Piping Installation Design and install the piping system to provide maximum leak prevention. Use weld or sweat joints where possible. The fact that glycol solutions, or other heat transfer fluids, can leak where water will not, must be taken into account. Do not use a pressure-reducing valve for make-up because a slight leak will lead to dilution of the mixture and possible loss of freeze protection. Control any refill to maintain the proper glycol-to-water ratio. 1. Glycol piping generally requires no insulation except when the fluid temperature will be below the ambient dewpoint temperature. TO COOLING LOAD Figure 5, Typical Piping FLUID COOLER WATER COOLED CONDENSER REFRIGERATION COMPRESSOR EVAPORATOR WATER CHILLER Refrigerant Piping 2. Vents are required at all high points in the piping to bleed air when filling the system. If fluid coolers are at high points, vent valves should be installed at each fluid cooler. 3. Gate valves should be installed on both sides of the pump to prevent loss of fluid in the event the pump requires repair or replacement. Install shut-off valves at the cooler in case it has to be moved or requires maintenance involving the coolant system. TXV EXPANSION TANK DIVERTING VALVE SHUT-OFF VALVE VENT AND FILL VALVE CIRCULATING PUMP SHUT-OFF VALVE FROM COOLING LOAD HEAT EXCHANGER FOR SUPPLEMENTAL FREE COOLING Specifications The specification is available in MSWord from the local Daikin Applied sales office. SECTION 15XXX PART 1 - GENERAL 1.01 SUMMARY Direct Drive Fluid Cooler Section includes design, performance criteria, refrigerants, controls, and installation requirements for air-cooled fluid cooler packages REFERENCES Comply with applicable Standards/Codes of ARI and ANSI/ASHRAE 15, ASHRAE 90.1 October 2003 requirements, and UL or UL-Canada as applicable. CAT 607 Fluid Coolers 23

24 1.03 SUBMITTALS A. Submit shop drawings and product data in accordance with specification requirements. B. Submittals shall include the following: 1. Dimensioned plan and elevation view drawings, including field piping, required clearances, and location of all field connections. 2. Summary of all auxiliary utility requirements such as electricity, water, etc. Summary shall indicate quality and quantity of each required utility. 3. Single line schematic drawing of the power field hookup requirements, indicating all items that are furnished. 4. Schematic diagram of control system indicating points for field connection. Diagram shall fully delineate field and factory wiring. 5. Installation manuals QUALITY ASSURANCE A. Qualifications; Equipment manufacturer must specialize in the manufacture of the products specified and have five years experience with the equipment. B. Regulatory Requirements: Comply with the codes and standards specified. C. The fluid cooler must be manufactured in an ISO certified facility DELIVERY AND HANDLING A. The units shall be delivered with all components ready for final assembly. B. Comply with the manufacturer s instructions for rigging and handling WARRANTY The refrigeration equipment manufacturer s warranty shall be for a period of one year from date of equipment start up, but not more than 18 months from shipment. It shall cover replacement parts having proven defective within the above period. PART 2--PRODUCTS 2.01 ACCEPTABLE MANUFACTURERS A. Basis of Design - Daikin Applied model AFS/AFD, including the standard product features and all special features required per the plans and specifications. B. Equal Products - Equipment manufactured by [ENTER MANUFACTURER NAME HERE] may be acceptable as an equal. Naming these products as equal does not imply that their standard construction or configuration is acceptable or meets the specifications. Equipment proposed as equal, must meet the 24 Fluid Coolers CAT 607

25 specifications including all architectural, mechanical, electrical, and structural details, all scheduled performance and the job design, plans and specifications UNIT DESCRIPTION Each fluid cooler shall consist of cabinet, fluid coil, multiple direct drive propeller fans driven by independent fan motors, fan guards and mounting legs. All fan motors shall be factory wired to a common electrical junction box DESIGN REQUIREMENTS A. General: Provide a complete outdoor fluid cooler as specified herein and as shown on the drawings. The unit shall be in accordance with the standards referenced in section 1.02 and any local codes. B. Performance: Refer to the schedule of performance on the drawings. The unit shall be capable of stable operation throughout the expected range of operating conditions. C. Acoustics: Sound pressure for the unit shall not exceed dba at feet from the edge of the unit. When needed to achieve these levels, the manufacturer shall provide the necessary sound treatment such as low-sound fans. Unit performance, affected by the use of these devices, shall meet or exceed the scheduled performance requirements FLUID COOLER COMPONENTS A. Coil -The coil shall be constructed of seamless copper tubes on a staggered tube pattern. Tubes shall be mechanically expanded into continuous, corrugated, rippled {aluminum}{copper} plate type fins for permanent metal-to-metal contact. The fins shall have full depth fin collars completely covering the copper tube. The coil shall be "floating tube type" with fluid-carrying tubes not touching the galvanized end plates. The coil shall be supported by non-refrigerant carrying copper tubes that are expanded into the coil. (AFS are not Floating Tube Type.) Heavy wall copper headers shall have dimpled stub tubes from the coil and a beaded hole for the large connection tube, both items to assure good brazing surface and joint strength. Headers shall be field piped to prevent excessive vibration. CAT 607 Fluid Coolers 25

26 Coils shall have a working pressure of 400 psig. A field supplied 400 psig relief device, one per circuit, is required on units up to two circuits. Coils shall be factory leak tested, dehydrated and connection ends spun closed. Unit shall be shipped under pressure with a dry air or nitrogen holding charge. B. Cabinet - The cabinet shall be beige, pre-painted G90 galvanized steel. Motors shall be supported by 11-gauge galvanized steel rail fastened to the coil center and end supports. Each fan section shall be in an individual compartment, separated from other fan sections by cabinetry. All legs and lifting brackets shall be 11-gauge galvanized steel. C. Motors - shall be dual voltage, /3/60 or 575/3/60, 830 or 1140 rpm, open drip-proof motors with internal overloads. D. Fan and Fan Guard - Fans shall have heavy gauge aluminum blades with painted steel spider. Fan guards shall be PVC coated steel. E. Electrical - Unit shall have weatherproof electric control panel with factory mounted door interrupt switch. Control voltage shall be 120 volts with individual contactors and fuse protection for each motor. F. Temperature Control- Provide a means of fan cycling to maintain fluid temperatures. This shall be automatic in operation without daily or seasonal adjustment. Controls shall be factory mounted and wired in the weatherproof electric panel and consist of up to eight temperature controls, one for each fan contactor, or pair of fan contactors, depending on unit size and number of fans OPTIONS AND ACCESSORIES The following options are to be included: Copper fins coil PolyGuard acylic coated fins(1000 hour, B117 salt spray test) ElectroFin dipped and coated coils (3000 hour, B117 salt spray test) Single-phase motors in lieu of standard motors which are /460 volt dualvoltage three-phase or 575 volt three-phase. Totally enclosed fan motors NEMA rated contactors in lieu of definite purpose contactors Sealtite motor wiring conduit Field-installed fluid manifold header units with two rows of fans units to provide a single point fluid connection. 26 Fluid Coolers CAT 607

27 PART 3 - EXECUTION 3.01 INSTALLATION A. Install in strict accordance with manufacturer s instructions and requirements, shop drawings, and contract documents. Field-installed fluid piping shall be leak tested, flushed and charged per best industry practice. B. Adjust and level the cooler in alignment on supports. C. Coordinate electrical installation with electrical contractor. D. Coordinate controls with control contractor. E. Provide all appurtenances required to insure a fully operational and functional unit START-UP A. Provide labor and material for proper commissioning of the unit. CAT 607 Fluid Coolers 27

28 This document contains the most current product information as of this printing. For the most up-to-date product information, please go to All Daikin Applied equipment is sold pursuant to Daikin Applied's Standard Terms and Conditions of Sale and Limited Product Warranty. All Daikin Applied equipment is sold pursuant to Daikin Applied's Standard Terms and Conditions of Sale and Limited Product Warranty. Consult your local Daikin Applied Representative for warranty details. Refer to form Y. To find your local representative, go to Daikin Applied (2/10)