ACDS-PRC003E-EN (04/2016): Product Catalog, Split …

1 April 2016 ACDS-PRC003E-ENSplit SystemAir- cooled condensers 20 to 120 TonsProduct Catalog 2016 trane All rights reservedACDS-PRC003E-ENIntroductionTTrra annee hhaass tthhee rriigghhtt you are designing a new system or replacing an existing air- cooled condenser, trane can satisfy virtually any application need. Whether coupled with anindustrial compressor, a single zone commercial self-contained unit, compressor chiller or a ColdGenerator chiller, trane has the right air- cooled condenser for the job. When teamed with anyone of a wide range of compressor-evaporator combinations, trane air- cooled condensers ,available in 20 to 120 tons, are ideal for multistory office buildings, hotels, schools, municipal andindustrial document and the information in it are the property of trane , and may not be used orreproduced in whole or in part without written permission. trane reserves the right to revise thispublication at any time, and to make changes to its content without obligation to notify anyperson of such revision or trademarks referenced in this document are the trademarks of their respective History Added Corrosive Atmosphere information to Application Considerations section.

2 Reformatted general, electrical and weight tables. Updated unit model numbers to show all option selections. Updated Mechanical Specifications to add missing information and review existing wordingfor content. Content organization reviewed and updated to meet current and 420 to 120 Ton Units.. 4 Durable Construction .. 4 Microchannel Condenser Coil.. 4 Application Considerations .. 6 Unit Location .. 6 Voltage .. 7 Effect of Altitude on Capacity .. 7 Ambient Considerations.. 7 Corrosive Atmospheres .. 7 Selection Procedures .. 9 Model Number Description .. 12 General 13 Performance Data .. 14 Performance Adjustment Factors.. 14 Performance Data.. 16 Unit 17 Unit 31 Mechanical Specifications .. 32 Air- cooled Condenser Model CAUJ .. 32 Options .. 32 Table of Contents4 ACDS-PRC003E-ENFeatures and Benefits20 to 120 Ton UnitsTrane 20 to 120 ton model CAUJ air- cooled condensers have an operating range of 40 F to 115 F, with a low ambient option down to 0 control panel is factory-installed and wired to prevent potential damage and to provideweathertight control panel contains: fan motor contactors fan cycling controls terminal point connection for compressor interlock 115-volt control power transformerThese standard features reduce installation costs and provide easy interface with control trane air- cooled condenser coils are an all aluminum microchannel design.

3 The 20 to 30 toncondensers are single circuit; 40 to 120 ton units are dual circuited; all feature can have optional corrosion protected condenser ConstructionTrane 20 to 120 ton condensers are built for long life. The unit frame is constructed of 14 gaugegalvanized steel. Louvered panels provide excellent coil protection while enhancing unitappearance and strength. The unit surface is phosphatized and finished with trane slate grey air-dry paint. This air dry-paint finish exceeds 672 consecutive hour salt spray resistance inaccordance with ASTM Condenser CoilMicrochannel condensing coils are all-aluminum coils with fully-brazed construction. This designreduces risk of leaks and provides increased coil rigidity making them more rugged on thejobsite. Their flat streamlined tubes with small ports and metallurgical tube-to-fin bond allow forexceptional heat transfer. Microchannel all-aluminum construction provides several additionalbenefits: Light weight (simplifies coil handling) Easy to recycle Minimize galvanic corrosionACDS-PRC003E-EN5 Slit Fins and Braze Contactfor Improved Heat Transfer and StrengthAir Condenser InletAir Condenser OutletMicrochannelsfor RefrigerantFFeeaattuurreess aanndd BBeenneeffiittss6 ACDS-PRC003E-ENApplication ConsiderationsCertain application constraints should be considered when sizing, selecting and installing trane air- cooled condensers .

4 Unit reliability is dependent upon these considerations. Where yourapplication varies from the guidelines presented, it should be reviewed with the local trane LocationFoundationA base or foundation is not required if the selected unit location is level and strong enough tosupport the unit s operating and Sound EmissionSince the environment in which a sound source is located affects sound pressure, unit placementmust be carefully evaluated. The most effective form of noise isolation is proper unit should be placed away from noise sensitive transmitted sound can be reduced by using isolators, which are recommended forsound sensitive installations. For maximum isolation effect, the refrigeration lines and electricalconduit should also be isolated and flexible electrical conduit acoustical engineer should always be consulted on critical and local codes on sound emissions should always be Flow ConsiderationsUnobstructed flow of condenser air is essential for maintaining capacity and operating determining unit placement, careful consideration must be given to assure proper air flowacross the condenser heat transfer surface.

5 Inadequate air flow will result in warm airrecirculation and coil air flow starvation. Warm air recirculation occurs when discharge air from the condenser fans is recycled back atthe condenser coil inlet. Coil starvation occurs when free air flow to the condenser is warm air recirculation and coil starvation cause reductions in unit efficiency and capacity. Inmore severe cases, nuisance unit shutdowns will result from excessive head pressures. Accurateestimates of the degree of efficiency and capacity reduction are not possible due to theunpredictable effect of varying hot gas bypass is used, reduced head pressure increases the minimum ambient conditionfor proper operation. In addition, wind tends to further reduce head pressure. Therefore, it isadvisable to protect the air- cooled condensing unit from continuous direct winds exceeding 10miles per , trash, supplies, etc., should not be allowed to accumulate in the vicinity of the air-cooledcondenser.

6 Supply air movement may draw debris between coil fins and cause coil consideration should be given to units operating in low ambient coils and fan discharge must be kept free of snow and other obstructions to permitadequate air flow for satisfactory unit service clearance is required for unit access and maintenance. See Dimensions chapterfor service clearance recommendations. Local code requirements may take condenser air discharge must be unobstructed. While it is difficult to predict the degree ofwarm air recirculation, a unit installed with a ceiling or other obstruction above it will losecapacity and the maximum ambient operation will be reduced. Nuisance high head pressuretrips may also inlet to the coil must also be unobstructed. A unit installed closer than the minimumrecommended distance to a wall or other vertical riser may experience a combination of coilACDS-PRC003E-EN7starvation and warm air recirculation, resulting in unit capacity and efficiency reductions, as wellas possible excessive head pressures.

7 The recommended lateral distances are listed in theDimensional Data voltage is the nameplate rating voltage. The actual range of line voltages at which theequipment can satisfactorily operate is given below:Table 1. Voltage rangeNominalVoltageVoltageUtilizationRan ge200/230(a)180-220 or 208-254460416-508575520-635(a)Units ratedfor 200/230-voltsship from the factory set foroperation in the 180 through leads onunit transformers,the unit will operatein the 208 through of Altitude on CapacityCapacities given in the performance data tables are at sea level. At elevations substantially abovesea level, the decreased air density will decrease condenser capacity. The adjustment factorsshown in can be applied directly to the catalog performance data to determine the unit sadjusted ConsiderationsTrane condensers are designed for year-around applications in ambients from 0 F through 115 operation below 0 F or above 115 F, contact the local trane sales and operation at lower ambients requires sufficient head pressure be maintained forproper operation.

8 Minimum operating ambient temperatures for standard unit selections andunits with hot gas bypass are shown in the General Data section. These temperatures are basedon still conditions (winds not exceeding five mph.) Greater wind velocities will result in a drop inhead pressure, therefore, increasing the minimum starting and operating ambient with the low ambient option are capable of starting and operating in ambients down to 0 F,10 F with hot gas bypass. Optional low ambient units use a condenser fan damper arrangementthat controls condenser capacity by modulating in response to head cataloged ambient temperature operation of a standard condenser is 115 F. Operationat design ambients above 115 F can result in excessive head proper operation outside these recommendations, contact the local trane sales AtmospheresTrane's large condensers are designed and built to industrial standards and will perform to thosestandards for an extended period depending on the hours of use, the quality of maintenanceperformed, and the regularity of that maintenance.

9 One factor that can have an adverse effect onunit life is its operation in a corrosive environment. Since the microchannel condenser coil is anall-aluminum design, it provides a high level of corrosion protection on its own. Uncoated, itwithstands a salt spray test in accordance with ASTM B117 for 1,000 hours. When condensers areoperated in highly corrosive environments, trane recommends the corrosion protectedcondenser coil option. This corrosion protection option meets the most stringent testing in theindustry, including ASTM B117 Salt Spray test for 6,000 hours and ASTM G85A2 Cyclic AcidifiedSalt Fog test for 2,400 hours. The acid fog test is the most stringent available today. This coatingis added after coil construction covering all tubes, headers, fins and edges. The design providessuperior protection from any corrosive ::Field coating is not allowed on microchannel CCoonnssiiddeerraattiioonnss8 ACDS-PRC003E-ENThe exterior panels are durable enough to withstand a minimum of 672 hours consecutive saltspray application in accordance with standard ASTM B117.

10 All screws are coated with zinc-plus-zinc CCoonnssiiddeerraattiioonnssACDS-PRC003E -EN9 Selection ProceduresWhen manually matching condensers with compressors, performance cross plotting becomesnecessary. The following procedure should be used to determine the correct Determine the total cooling load. Make a preliminary compressor selection based on theexpected evaporator SSTand condensing :Total cooling load = 101 tons (1212 Mbh)Design outdoor temperature = 95 FAssume:Evaporator SST= 45 F (used in this example - application dependent) CondenserSCT between 115 Fand 125 F(20-30 F ITD SCT-ambient)2. Select compressors from manufacturer's data to meet the load at the evaporator SST (forchiller low suction applications contact trane applications).Table 2. Compressor capacity with subcooling(Qty2)CSHN611 TraneR-410 ATrioScrollsPerformancedataincludes15 F subcoolingSSTSCTTonsMbh45115110132045125 1031236 Notes:1.