Air-Cooled Liquid Chillers - Klimatizace
PRO-DIALOG Air-Cooled Liquid Chillers30XAS 242-482Nominal cooling capacity 235-484 kWThe 30XAS Aquaforce liquid chillers are the premiumsolution for industrial and commercial applications whereinstallers, consultants and building owners require optimalperformances and maximum quality.The Aquaforce liquid chillers are designed to meet currentand future requirements in terms of energy efficiency andoperating sound levels. They use the best technologiesavailable today:-- Twin-rotor screw compressor with a variable capacityvalve.-- Single refrigerant R-134a.-- Low-noise generation IV Flying Bird fans made ofcomposite material.-- Aluminium micro-channel heat exchangers (MCHX).-- Pro-Dialog control system.To meet to all environmental and economic requirements,the Aquaforce is available in two versions:One offers an extremely low noise level while at the sametime boasting superior energy efficiency.The other offers unequalled energy efficiency to satisfythe most stringent demands of building owners wanting toreduce operating costs to the minimum. This version isalso recommended for applications in geographical zoneswhere the air temperature is very high.Features and advantagesVery economical operation Extremely high full load and part load energy efficiency:-- Eurovent energy efficiency class “A to C”, average EERof 3.05 kW/kW (high-efficiency option)-- Average ESEER of 3.89 kW/kW-- Twin-rotor screw compressor equipped with a high--------efficiency motor and a variable capacity valve that permitsexact matching of the cooling capacity to the load.All aluminium condenser with micro-channels that ismore efficient than a copper/aluminium coil.Flooded shell-and-tube evaporator to increase the heatexchange efficiency.Electronic expansion device permitting operation at alower condensing pressure and improved utilisation of theevaporator heat exchange surface (superheat control).Economizer system with electronic expansion device forincreased cooling capacityLow operating sound levels Compressor-- Discharge dampers integrated in the oil separator(Carrier patent).-- Silencer on the economiser return line.-- Acoustic compressor and oil separator enclosurereducing radiated noise.
Condenser section-- Condenser coils in V-shape with an open angle, allowingquieter air flow across the coil-- Low-noise 4th generation Flying Bird fans, made of acomposite material (Carrier patent) are now even quieterand do not generate intrusive low-frequency noise-- Rigid fan mounting preventing start-up noise (Carrierpatent)Easy and fast installation Integrated hydronic module (option)-- Centrifugal high-pressure dual water pump, with operatingtime balancing and automatic changeover to the back-uppump if a fault develops-- Water filter protecting the water pump against circulatingdebris-- High-capacity membrane expansion tank ensurespressurisation of the water circuit-- Thermal insulation and aluminium protection-- Pressure sensor to check filter pollution and for directnumerical display of the water flow rate with an estimate ofthe instantaneous cooling capacity at the control interface-- Water flow control valve Simplified electrical connections-- Main disconnect switch with high trip capacity-- Transformer to supply the integrated control circuit(400/24 V) Fast commissioning-- Systematic factory operation test before shipment-- Quick-test function for step-by-step verification of theinstruments, expansion devices, fans and compressorEnvironmental care R-134a refrigerant-- Refrigerant of the HFC group with zero ozone depletion Exceptional endurance tests-- Partnerships with specialised laboratories and use of limitsimulation tools (finite element calculation) for the designof critical components.-- Transport simulation test in the laboratory on a vibratingtable. The test is based on a military standard and equivalent to 4000 km by truck.-- Salt mist corrosion resistance test in the laboratory forincreased corrosion resistance Control, safety30XAS units are equipped with high-pressure safety switcheswith manual reset and dual safety valves on the high- andlow-pressure side as standard. Each of the safety valves ismounted on a three-way valve to facilitate testing andreplacement.Pro-Dialog controlPro-Dialog combines intelligence with operating simplicity.The control constantly monitors all machine parameters andprecisely manages the operation of compressor, expansiondevices, fans and of the evaporator water pump for optimumenergy efficiency.Pro-Dialog interface\\MAINMENU\STATUSCAPB TDEM LIMSPCTRL PNTEMSTOP01004.2-28.9dsable%% C CCircuit B Total CapacitySTART/STOPENTERPRO-DIALOG potential-- 30% reduction in the refrigerant charge through the useof micro-channel heat exchangers Leak-tight refrigerant circuit-- Reduction of leaks as no capillary tubes and flare connec-tions are used-- Verification of pressure transducers and temperaturesensors without transferring refrigerant charge-- Liquid line service valve for simplified maintenanceAbsolute reliability Screw compressor-- Industrial-type screw compressor with oversized bearingsand motor cooled by suction gas-- All compressor components are easily accessible on siteminimising down-time-- Protection increased by an electronic board Air condenserAll aluminium micro-channel heat exchangers (MCHX)with a corrosion resistance that is 3.5 times higher than fora traditional coil. The all aluminium design eliminates theformation of galvanic currents between aluminium andcopper that cause coil corrosion in saline or corrosiveenvironments EvaporatorThermal insulation with aluminium sheet finish for perfectresistance to external aggression (mechanical and UVprotection) Auto-adaptive control-- Control algorithm prevents excessive compressorcycling (Carrier patent)-- Automatic compressor unloading in case of abnormallyhigh condensing pressure. If condenser coil fouling orfan failure occurs, the Aquaforce continues to operate,but at reduced capacity2 Energy management-- Seven-day internal time schedule clock: permits chilleron/off control and operation at a second set point-- Set point reset based on the outside air temperature orthe return water temperature or on the water heatexchanger delta T-- Master/slave control of two chillers operating in parallelwith operating time equalisation and automatic changeover in case of a unit fault (accessory)-- Change-over based on the outside air temperature Integrated features-- Night mode: capacity and fan speed limitation forreduced noise level-- With hydronic module: water pressure display and waterflow rate calculation Ease-of-use-- The new backlighted LCD interface includes a manualcontrol potentiometer to ensure legibility under anylighting conditions.-- The information is displayed clearly in English, French,German, Italian and Spanish (for other languages pleaseconsult Carrier).-- The Pro-Dialog navigation uses intuitive tree-structuremenus. They are user-friendly and permit quick access tothe principal operat-ing parameters: compressor operating,suction/discharge pressure, compressor operating hours,set point, air temperature, entering/leaving watertemperature.
Remote operating mode with volt-free contacts(standard)A simple two-wire communication bus between the RS485port of the Aquasnap and the Carrier Comfort Networkoffers multiple remote control, monitoring and diagnosticpossibilities. Carrier offers a vast choice of controlproducts, specially designed to control, manage andsupervise the operation of an air conditioning system.Please consult your Carrier representative for moreinformation on these products.-- Start/stop: opening of this contact will shut down the unit-- Dual set point: closing of this contact activates a secondset point (example: unoccupied mode)-- Water pump 1 and 2 control (contacts supplied with thehydronic module option): these outputs control thecontactors of one or two evaporator water pumps-- Alert indication: this volt-free contact indicates thepresence of a minor fault-- Alarm indication: this volt-free contact indicates thepresence of a major fault that has led to the shut-downof the refrigerant circuit-- Demand limit 1 and 2: closing of these contacts limitsthe maximum chiller capacity to three predefined values-- User safety: this contact can be used for any customersafety loop, closing of the contact generates a specificalarm.Remote interface (accessory)This interface allows access to the same menus as the unitinterface and can be installed up to 300 m away. Thisaccessory includes a box that can be mounted inside thebuilding. The power supply is provided via a 220 V/24 Vtransformer supplied.06T screw compressorThe Carrier 06T screw compressors benefit from Carrier’slong experience in the development of twin-rotor screwcompressors.The compressor is equipped with bearings with oversizedrollers, oil pressure lubricated for reliable and durableoperation, even at maximum load.A variable control valvecontrolled by the oil pressure permits infinitely variablecooling capacity.This system allows optimal adjustment of the compressorcooling capacity and ensures exceptionally high stability ofthe chilled water leaving temperature. Among the otheradvantages: if a fault occurs e.g. if the condenser is fouledor at very high outside temperature, the compressor doesnot switch off, but continues operation with a reducedcapacity (unloaded mode).The compressor is equipped with a separate oil separatorthat minimises the amount of oil in circulation in the refrigerant circuit and with its integrated silencer considerablyreduces discharge gas pulsations for much quieter operation.3
All-aluminium micro-channel heat exchanger (MCHX)Already utilised in the automobile and aeronautical industriesfor many years, the MCHX used in the Aquaforce is entirelymade of aluminium. This one-piece concept significantlyincreases its corrosion resistance by eliminating the galvaniccurrents that are created when two different metals (copperand aluminium) come into contact in traditional heatexchangers. Unlike traditional heat exchangers the MCHXheat exchanger can be used in moderate marine and urbanenvironments.4From an energy efficiency point-of-view the MCHX heatexchanger is approximately 10% more efficient than atraditional coil and allows a 30% reduction in the amountof refrigerant used in the chiller.The low thickness of the MCHX reduces air pressurelosses by 50% and makes it less susceptible to fouling (e.g.by sand) than a traditional coil. Cleaning of the MCHXheat exchanger is very fast using a high-pressure washer.
Options and accessoriesOptionsCorrosion protection,traditional coilsCorrosion protection,traditional coilsUnit equipped for airdischarge ductingIP 54 control boxGrilles20A23DescriptionFactory application of Blygold Polual treatment on thecopper/aluminium coilsFins made of pre-treated aluminium (polyurethaneand epoxy)Fans with available pressure equipped with dischargeconnection flangesIncreased leak tightness of control boxesMetal grilles on the unit front, rear and sidesEnclosure panelsWinter operation23A28Side panels at each end of the coilFan speed control via frequency converterEvaporator frost protection41AResistance heaters on the evaporatorEvaporator and hydronicmodule frost protectionHeat reclaim41BService valveDischarge valveHigh-pressure dual-pumphydronic moduleHigh energy efficiencyJBus gatewayBacNet gatewayLON gatewayEnergy Management ModuleEMMRussian code complianceAustralian code complianceUnit without enclosureTraditional coils (Cu/Al)Traditional coils (Cu/Al)without slotsSuction piping insulationLow sound levelVery low sound level (secondattenuation level)MCHX anti-corrosionprotectionAccessoriesCCN JBus gatewayCCN BacNet gatewayCCN LON Talk gatewayConnection sleeveEnergy Management ModuleEMMLead-lag kitNo.2B3A10Resistance heaters on the evaporator and thehydronic module50Complete recovery of the heat rejected by thecondenser92Shut-off valves on the compressor suction piping, theeconomiser line, the compressor discharge pipingand at the evaporator inlet93A Shut-off valves on the compressor discharge piping116C See hydronic module chapter119Improved condenser performanceAdvantagesImproved corrosion resistance, recommended forindustrial, rural and marine environmentsImproved corrosion resistance, recommended formoderate marine and urban environmentsFacilitates connection to the discharge ductsUse30XAS 242-48230XAS 242-48230XAS 242-482Increased control box protectionEnhanced aesthetics, protection against intrusion tothe unit interiorEnhanced aestheticsStable unit operation when the air temperature isbetween -10 C and -20 CEvaporator frost protection down to -20 C outsidetemperatureEvaporator and hydronic module frost protectiondown to -20 C outside temperatureFree hot-water production as well as cold-waterproductionSimplified maintenance30XAS 242-482Simplified maintenanceEasy and fast installation, operating safety30XAS 242-48230XAS 282-482Energy cost reduction, full load operation at higherair temperatures148B Two-directional communications board, complies with Easy connection by communication bus to aJBus protocolbuilding management system148C Two-directional communications board, complies with Easy connection by communication bus to aBacNet protocolbuilding management system148D Two-directional communications board, complies with Easy connection by communication bus to aLON protocolbuilding management system156See chapter “Energy Management Module”Easy connection by wired connection to a buildingmanagement system199GOST certificationConformance with Russian regulations (GOST)200Pressure vessels approved in accordance with theConformance with Australian regulationsAustralian code253Compressor not equipped with acoustic enclosureMore economical254Coils made of copper tubes with aluminium finsPossibility to add specialised condenser treatment255Coils made of copper tubes with aluminium finsRecommended for the Middle East, sand storms.without slotsPossibility to add specialised condenser treatment.256Thermal insulation of the suction piping with flexible,Prevents condensation on the suction pipinganti-UV insulant257Sound insulation (suction piping)Unit sound power level reduction of -2 to -3 dB(A)258Additional sound insulationUnit sound power level reduction of -1 to -3 dB(A),depending on un it size, compared to option 257263Carrier factory treatment of the MCHX heat exchanger The Super Enviro-Shield option was developed tofor applications in aggressive environmentsextend the application range of MCHX heatexchangers in severe environmental conditions: thisoption is compulsory in industrial and coastalenvironments.DescriptionAdvantagesSee option 148BSee option 148BSee option 148CSee option 148CSee option 148DSee option 148DPiping to be welded with Victaulic connectionEase-of-installationSee controls manualEasy connection by wired connection to a buildingmanagement systemOptimised operation of two chillers connected inSupplementary water outlet temperature sensor kit,parallel with operating time balancing.field-installed, allows master/slave operation of twochillers connected in parallel.30XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 282-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-48230XAS 242-482UseSee option 148BSee option 148CSee option 148D30XAS 242-48230XAS 242-48230XAS 242-4825
Physical data30XASNominal cooling capacity*Standard unitkWPower inputkWEERkW/kWEurovent class coolingESEERkW/kWIPLVkW/kWNominal cooling capacity*Unit with option 119**kWPower inputkWEERkW/kWEurovent class coolingESEERkW/kWIPLVkW/kWOperating weight***kgWith option 116C**kgWith options 254 or 255**kgSound levelsStandard unitSound power level****dB(A)dB(A)Sound pressure level at 10 m†Standard unit option 257Sound power level****dB(A)dB(A)Sound pressure level at 10 m†Standard unit option 258Sound power level****dB(A)dB(A)Sound pressure level at 10 m†High energy efficiency unit (option 119**)Sound power level****dB(A)dB(A)Sound pressure level at 10 m†High energy efficiency unit (option 119**) option 257Sound power level****dB(A)dB(A)Sound pressure level at 10 m†CompressorRefrigerantNo. of circuitsRefrigerant chargekgRefrigerant charge option 254/255**kgCapacity controlMinimum capacity%CondensersCondenser fansStandard units and units with option 119 - 254**QuantityTotal air flow, standard unitl/sFan speed, standard unitr/sTotal air flow - unit with option 119**l/sFan speed - unit with option 119**r/sEvaporatorWater contentlWithout hydronic moduleWater connections, inlet/outletDiameterinOutside diametermmMax. water-side pressurekPaWith hydronic module (option 116C**)Water connections, inlet/outletDiameterinOutside diametermmExpansion tank volumelMax. water-side pressurekPaChassis paint 3626206T semi-hermetic screw compressor, 50 r/sR-134a1116072738595105PRO-DIALOG , electronic expansion valve (EXV)303030All aluminium micro-channel heat exchangerAxial Flying Bird IV fans with rotating 180552256915.715.7Flooded shell-and-tube 05141.31000Victaulic4114.350400Colour code: 141.31000* Standard Eurovent LCP/A/P/C/AC conditions in cooling mode: evaporator entering/leaving water temperature 12 C/7 C, outside air temperature 35 C.** Options: 116C high-pressure dual-pump hydronic module; 119 high energy efficiency units; 254 units with copper/aluminium coils with slots; 255 units with copper/aluminium coils withplain fins; 257 low sound level; 258 very low sound level.*** Weights are guidelines only. The refrigerant charge is also given on the unit nameplate.**** 10-12 W - In accordance with ISO 9614-1 and certified by Eurovent.† Average sound pressure level, unit in a free field on a reflective surface. In accordance with ISO 9614-1 (10-12 W). For information, calculated from the sound power level Lw(A)Note: Option 119 (high energy efficiency) can be used together with options 254 and 255. Contact your Carrier representative to obtain the performances.6
Electrical data30XASPower circuitNominal power supplyVoltage rangeMaximum supply cable sectionShort-circuit stability current (TN system)*Control circuitStart-up current**Standard unitCosine Phi maximum***Cosine Phi nominal****Maximum power input†Nominal current draw****Maximum current draw (Un)†Maximum current draw (Un -10%)***High energy efficiency unit (option 119)Cosine Phi maximum***Cosine Phi nominal****Maximum power input†Nominal current draw****Maximum current draw (Un)†Maximum current draw (Un -10%)*************†242V-ph-HzVmm2kA2823424424822 x 150502 x 150502 x 24050A400-3-50360-4402 x 1502 x 95385024 V via internal 0.831902543183370.870.84221271368390kA eff: efficiency value: rms for English versionInstantaneous start-up current (locked rotor current in star connection of the compressor).Values obtained at operation with maximum unit power input.Values obtained at standard Eurovent unit operating conditions: air 35 C, water 12/7 C.Values obtained at operation with maximum unit power input. Values given on the unit name plate.Note:Motor and fan electrical data if the unit operates at Eurovent conditions (motor ambient temperature 50 C): 1.9 AStart-up current: 8.4 APower input: 760 W30XAS with hydronic module (option 116C)High-pressure pumpMotor powerPower inputMaximum current 1113.221.2Notes:1. To obtain the maximum power input for a unit with hydronic module add the maximum unit power input to the pump power input.2. To obtain the maximum unit operating current draw for a unit with hydronic module add the maximum unit current draw to the pump current draw.Electrical data notes and operating conditions for 30XAS units: 30XAS 242-482 units have a single power connection point locatedimmediately upstream of the main disconnect switch.The control box includes the following standard features:-- One general disconnect switch-- Starter and motor protection devices for the compressor, the fans andthe pump-- Control devicesField connectionsAll connections to the system and the electrical installations must be in fullaccordance with all applicable local codes.The Carrier 30XAS units are designed and built to ensure conformance withthese codes. The recommendations of European standard EN 60 204-1(corresponds to IEC 60204-1) (machine safety - electrical machine components - part 1: general regulations) are specifically taken into account, whendesigning the electrical equipment. 1.2.3.4.5.6.IMPORTANTGenerally the recommendations of IEC 60364 are accepted as compliancewith the requirements of the installation directives.Conformance with EN 60 204 is the best means of ensuring compliance withthe Machines Directive § 1.5.1.Annex B of EN 60204-1 describes the electrical characteristics used for theoperation of the machines.The operating environment for the 30XAS units is specified below:Environment* ‑ Environment as classified in EN 60 721 (corresponds to IEC60721) :-- outdoor installation*-- ambient temperature range: ‑20 C to 55 C, class 4K4H*-- altitude: 2000 m-- presence of hard solids, class 4S2* (no significant dust present)-- presence of corrosive and polluting substances, class 4C2 (negligible)Power supply frequency variation: 2 Hz.The neutral (N) line must not be connected directly to the unit (if necessaryuse a transformer).Overcurrent protection of the power supply conductors is not provided withthe unit.The factory‑installed disconnect switch(es)/circuit breaker(s) is (are) of a typesuitable for power interruption in accordance with EN 60947-3 (correspondsto IEC 60947-3).The units are designed for simplified connection on TN(s) networks (IEC 60364).For IT networks derived currents may interfere with network monitoring elements,and it is recommended to create an IT type divider for the system units thatrequire this and/or a TN type divider for Carrier units. Please consult theappropriate local organisations to define the monitoring and protectionelements and carry out the electrical installation.NOTE: If particular aspects of an actual installation do not conform to theconditions described above, or if there are other conditions whichshould be considered, always contact your local Carrier representative.*The required protection level for this class is IP43BW (according to referencedocument IEC 60529). All 30XAS units are protected to IP44CW and fulfil thisprotection condition.7
Part load performancesWith the rapid increase in energy costs and the care aboutenvironmental impacts of electricity production, powerconsumption of air conditioning equipment has becomean important topic. The energy efficiency of a liquid chillerat full load is rarely representative of the actual performanceof the units, as on average a chiller works less than 5% ofthe time at full load.The heat load of a building depends on many factors, suchas the outside air temperature, the exposure to the sunand the building occupancy.Consequently it is preferable to use the average energyefficiency, calculated at several operating points that arerepresentative for the unit utilisation.IPLV (in accordance with ARI 550/590-98)ESEER (in accordance with EUROVENT)IPLV (integrated part load value)ESEER (European seasonal energy efficiency ratio)The IPLV (integrated part load value) allows evaluationof the average energy efficiency based on four operatingconditions defined by the ARI (American RefrigerationInstitute). The IPLV is the average weighted value of theenergy efficiency ratios (EER) at different operatingconditions, weighted by the operating time.Load % Air temperature C Energy efficiencyOperating time V EER1 x 1% EER2 x 42% EER3 x 45% EER4 x 12%Sound spectrum30XAS - standard unit242282342442482dBdBdBdBdBOctave bands, 5942k83858686834k777479767530XAS - standard unit with option 257*242282342442482dBdBdBdBdBOctave bands, 9902k79787982814k747177797630XAS - standard unit with option 258*2422823424424828dBdBdBdBdBOctave bands, 7872k76767778784k7168747573Sound d d powerlevelsdb(A)db(A)db(A)db(A)db(A)8989889291The ESEER (European seasonal energy efficiency ratio)permits evaluation of the average energy efficiency at partload, based on four operating conditions defined byEurovent. The ESEER is the average value of energyefficiency ratios (EER) at different operating conditions,weighted by the operating time.Load % Air temperature C Energy efficiency Operating time %310035EER1337530EER2415025EER3232520EER4ESEER EER1 x 3% EER2 x 33% EER3 x 41% EER4 x 23%30XAS - unit with option 119*242282342442482dBdBdBdBdBOctave bands, 230XAS - unit with option 119 257*242282342442482dBdBdBdBdBOctave bands, 293Sound d powerlevelsdb(A)db(A)db(A)db(A)db(A)9595959797* Options: 119 high energy efficiency units; 257 low sound level; 258 very low soundlevel.
Operating limitsEvaporator water temperatureWater entering temperature at start-upWater entering temperature during operationWater leaving temperature during operation C Minimum6.83.3Maximum45*2115Note: If the leaving water temperature is below 4 C, a glycol/water solution or the frostprotection option must be used.Condenser air temperatureStorageOperation:Standard unitWith option 28: winter operationWith option 119: high energy efficiency*** C Minimum Maximum-2068-10-20-10Evaporator water flow rate imum*30.730.730.741.041.0* The maximum water flow rate corresponds to a pressure drop of 100 kPa.55**55**55****Note: If the air temperature is below 0 C, a glycol/water solution or the frost protectionoption must be used.**********Based on the installation type and the air temperaturePart load, based on the water temperatureRecommended for operation above 46 CPart-load operationOperating range30XAS high energy efficiency unit or option 119Air entering temperature, CAir entering temperature, C30XAS standard unitEvaporator leaving water temperature, CEvaporator leaving water temperature, CLegendOperating range, unirt equipped with option 28 "Winter operation"Below 0 C air temperature the unit must either be equipped with the evaporator frost protection option (41A or 41B), or the water loop must be protected against frost by using a frostprotection solution (by the installer).Part load average9
Hydronic module (option 116C)Typical hydronic circuit 7891011121314LegendComponents of unit and hydronic modulePressure sensor (A-B p evaporator)Pressure sensorPressure sensor (C-D p water filter)Pressure sensorVictaulic screen filterExpansion tankSafety valveAvailable pressure pumpDrain valveWater flow control valveEvaporatorEvaporator defrost heater (option)Hydronic module defrost heaterAir vent (evaporator)Water purge (evaporator)Expansion compensator (flexible connections)Flow switchWater temperature sensor15161718----System components (supplied by customer)Air ventFlexible connectionShut-down valvesCharge valveHydronic module (option)11B91418Available static pressure, kPaAvailable static system pressure for installation with thehydronic module (option 116C)1.2.3,4.Legend30XAS 28230XAS 34230XAS 44230XAS 482Water flow rate, l/sFan with available pressure (option 10)This option allows a duct connection at the discharge sideof the condenser fan. The unit is supplied with axial fanswith a speed of 15.8 r/s (option 119), each equipped with aduct connection frame. The chiller can operate up to 60 Pawith reduced performance.Selection exampleThe base capacities are those of option 119 (page 6 of thisdocument). To obtain capacities at various pressure dropsuse the correction factors in the table opposite.Selection at Eurovent conditions30XAS options 119 10Correction factorAir flowCooling capacityEERPower input600.879-1.5-5.0 3.5Example30XAS 282 with 40 Pa pressure dropValues for option 119 at the following conditions:35 C outside air temperature12/7 C entering/leaving water temperature30XAS 282Air flowCooling capacityEERPower input10Sizes 282-482Fan pressure drop, Pa02040% l/s10.9650.925% kW0-0.5-1.0% kW/kW 0-1.5-3.5% kW0 1.0 2.5l/skWkW/kWkW0 Pa225692803.1788Coefficient92.5%99.0%96.5%102.5%40 Pa208762773,0690
Total heat reclaim (option 50)65Condenser leaving water temperature, CSuitable for heating, domestic hot water preparation,agriculture and food industry, industrial processes andother hot-water requirements.With the total heat reclaim option it is possible to reducethe energy consumption bill considerably compared toconventional heating equipment such as fossil fuel boilersor ele
Air-Cooled Liquid Chillers The 30XAS Aquaforce liquid chillers are the premium solution for industrial and commercial applications where installers, consultants and building owners require optimal performances and maximum quality. The Aquaforce liquid chillers are designed to meet current and future requirements in terms of energy efficiency and
cause water-cooled chillers can take advantage of lower condensing temperatures than air-cooled chillers. Air-cooled chillers have a full load kW/ton of approxi-mately 1.25 while water-cooled chillers have a full load kW/ton of between 0.55 and 0.8 kW/ton. The kW draw of the cooling tower fans and con-denser water pump should be
Air Cooled Chiller Air Air 2 Air Air 6 AIR COOLED CHILLERS Air-cooled chillers are refrigeration machines that remove heat from cooling loads using chilled water and reject this heat into the atmosphere using refrigerant. THEY ALL HAVE fans, condenser coils, and compressors. Air-cooled chillers are used to provide cooling for human comfort and electronic equipment as well as industrial process .
Air-Cooled Reciprocating Liquid Chillers with ComfortLink Controls 50/60 Hz Nominal Capacities: 50 to 410 Tons 179 to 1445 kW Product Data Features/Benefits ComfortLink control Your link to a world of simple and easy to use air-cooled chillers that offer out-standing performance and value. The 30GTN,GTR liquid chillers employ more than the .
AIR-COOLED LIQUID CHILLERS Liquid chillers with partial heat recovery Liquid chillers with total heat recovery FOCS FOCS-D FOCS-R I dati contenuti possono essere variati senza obbligo di preavviso All specification and data are subject to change without notice CLIMAVENETA S.p.A. Via Sarson, 57/C Tel. ( 39) 0424 509 500 Fax ( 39) 0424 509 509
Maximum Series portable chillers can be used on a variety of process applications that require 20 F to 80 F chilled water. MAXIMUM SERIES † Air & Water-Cooled † 1/4 to 40 Tons † 20 F to 80 F † Using Non-Ozone Depleting Refrigerants 10 ton air-cooled model 10 ton water-cooled model 2 ton water-cooled model 1 ton air-cooled model
8 to 12 F for water-cooled chillers and 10 to 15 F for air-cooled chillers. ENSURE PROPER SUPERHEAT For air-cooled chillers, make sure fans work properly and coils are clean on the condenser side of the system. For water-cooled chillers, ensure that all flow rates and pressure drops on th
air-cooled screw liquid chillers e/v high efficiency and s/p standard efficiency air-cooled screw liquid chillers installation, operation, maintenance supersedes: 201.23-nm2 (610) form 201.23-nm2 (315) 035-21506-101 issue date: march 9, 2015. 2 johnson controls form 201.23-nm2
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