Air-Cooled Scroll Chiller(R410A)5BHW0-01AP/No. : MFL67285204Air-Cooled Scroll Chiller (R410A)1. Introduction2. Features & Benefits3. HMI Controller4. Nomenclature5. Selection Procedure6. Operation Range & Limit7. Specifications8. Performance Data of Cooling9. Head loss of Cold water10. Dimensions11. Base of Installation12. Electric Characteristics13. Wiring Diagrams14. Installation of Chiller15. Specification of Production16. Appendix1 Outdoor Unit _ IntroductionAir-Cooled Scroll Chiller (R410A)1. IntroductionModel ACAH Air-Cooled Inverter Scroll Compressor Modular Chiller Inverter Scroll Chiller of LG Electronics provides cold water for cooling air conditioning system using AHU or FCUetc.AirCooledR410ARefrigerantScrollChillerACAHSeriesdesignedforoutdoorsisasingleunitproductofmodular type composed of scroll compressor, air cooled condenser, electronic expansion valve, evaporator andLG HMI (Human Machine Interlock). ACAHSeriesiscomposedof1invertercompressorand2staticspeedcompressorstoformindependentrefrigerant cycle and one unit module can configure up to maximum of 3 refrigerant cycles and can interlock withup to 3 modules for control. ACAH Series applies the inverter technology to the compressor and condenser fan motor for not only high loadbut also highly efficient operation in all operating areas. 2 _ Outdoor UnitIntroductionAir-Cooled Scroll Chiller (R410A)1. Introduction Cooling cycleACAH Series uses the low pressure type scroll compressor, and the suction gas part is separated from the highpressure discharge part and the motor is installed on the low pressure gas part. Space for motor and storage forrefrigerant is secured in the low pressure gas part to increase the reliability for the liquid compression. Because the sucked refrigerant gas cools the motor and flows to the compressor, separate cooling device to coolthe compressor is not required. Inside the system, oil to lubricate the compressor is mixed with the refrigerant todischarge both the oil and refrigerant during the operation. Because the oil discharged from the compressor canreduce the heat transfer efficiency when thick layer is built up on the inner walls of the condenser and evaporator,device to prevent the refrigerant and oil to be discharged together is added to prevent this issue. Thislubricationsystemensureslongerlifeforthecompressor,improvesthesealingofthecompressionspaceand provides low noise operation. Astheaircooledfinandtubetypeheatexchanger,thecondenseriscomposedofheatexchangerinVshape,andtheelectronicexpansionvalveisusedforefficientcontrolinallloadconditions.Thecontrollerusedinthechiller is exclusively for LG and monitors various sensors installed on the product to protect the product. Forcontinuoussupplyofcoldandhotwater,theproductisequippedwithmaximumcontinuousoperationalfunction and also provides precision control to supply accurate target amount of cold and hot water. But the protective devices will immediately stop the product when the product reaches abnormal condition or arealimit. In case of an issue, the controller of the chiller will provide helpful diagnostic message to the administrator.1 2 4 5 3 7 6 - This chiller model is configured as shown below. Product configuration Legend1. Fan motor2. Fin & tube heatexchanger3. Controller box4. Condenser cover5. Rope support6. Forklift groove7. Side cover3 Outdoor Unit _ IntroductionAir-Cooled Scroll Chiller (R410A)1. IntroductionThe cooling cycle of ACAH Series can be described using the following Pressure Enthalpy chart. ,,, and in the following chart shows the conditions of the refrigerant. The refrigerant comes into thecompressor motor and cools the motor, and becomes overheated and moves to the suction inlet of the compres-sor. The oil inside the compressor seals the gap between the compressor scrolls and provides lubrication for thebearing to help the compression of the refrigerant. During this time, the refrigerant is compressed and is dis-charged to the air cooled condenser. () The compressed refrigerant passes through the air cooled condenserand exchanges the heat with the outdoor air. The condensed refrigerant then passes the condenser to be over-cooled. (). The refrigerant that passed through the condenser expands in the electronic expansion valveto flow to the evaporator. (). The refrigerant is evaporated in the plate type heat exchanger, the evaporator.() Liquid refrigerant of low temperature pressure passes through the evaporator to cool the water flowing intothe evaporator and the refrigerant itself receives the heat to evaporate to gas condition. () The refrigerant contin-ues to change the phase and continuously repeats the cooling cycle. For heating, the refrigerant flows in thereverse direction to provide hot water. Description of cooling cycle Partial load operationEach cooling cycle operates independently and 1 cooling cycle is composed of 1 inverter compressor and 2 staticspeed compressors as shown below. When the load is less than 40%, it can be operated only with the compressorand when 1 static speed compressor and inverter compressor operates simultaneously, it can respond to about80% of the load. Lastly, when 2 static speed compressors and inverter compressor all operate simultaneously, it canrun up to maximum performance. Inverter compressor increases the RPM after staring to operate to graduallyincrease the cooling capacity. But when it reaches a specific RPM, the RPM is reduced to turn on 1 set of staticspeed compressor. After the static speed compressor is turned on, the inverter compressor increases the RPMagain to increase the cooling capacity, and it repeats the same process to turn on another set of static speed com-pressor. When both static speed compressors are operating, the inverter compressor can increase up to maximumfrequency. The user can operate the product smoothly at optimal condition by setting the cooling capacity based on the linearcontrol of LG Chiller Controller and the product has efficient partial load performance at any load. PressureEnthalpy4 _ Outdoor UnitFeatures & BenefitsAir-Cooled Scroll Chiller (R410A)2. Features & Benefits Economic feasibilityIt perfected the highest level of energy efficiency in all load domains to be able to greatly reduce the yearlyoperation cost. BLDC inverter compressor is applied to make high efficiency possible in both high load and small load envi-ronment. With the application of MPS system using multiple compressors, it has excellent energy saving effect underpartial load. Power consumption can be reduced compared to AC motor, and with improved wind amount, it improved theheat exchange efficiency. High efficiency wide louver fin is applied to the condenser heat exchanger to improve heat exchange efficiency. Reliability In case of a compressor failure, it is automatically substituted (Back-up) by another compressor possible fornormal operation, so it can be operated in emergency situations. Since it is composed of independent refrigerant cycle, during failure cycle SVC, other cycles can operate theproduct. For each compressor to have the same average operation hours, they are operated in turn, so it extendedthe lifespan and secured the reliability. Product performance test was carried out in the operation condition same as the actual operation for perfectquality management. Through nationwide service Network establishment, optimal services are provided. It provides perfect quality management process from design to installation, SVC, and maintenance. ConvenienceIt applied 178 mm TFT LCD touch screen for simple and easy control of the product, and it provides variousfunctions such as control for each module, schedule management control, detail monitoring function, etc.1 HMI can control up to 3 modules, and a separate installation of HMI controller is possible, so you can controlfreezer from the management room.Convenience is improved through various additional functions such as night time low noise mode that adjustsFan RPM at late night according to the setting, etc. Easy InstallationWith compact product design, it has excellent degree of space utilization and it can save installation cost.Unit modules are composed of 20, 40, and 60 RT, they can be easily expanded to 180RT with the combinationthrough HMI controller, and extension and additions are easy for remodeling. Environment-friendlyIt uses environment friendly refrigerant R410A with Ozone layer depletion index (ODP) of 0, and it is the envi-ronment friendly product that does not use the ROHS 6 harmful materials in Europe Environment Standard.It applied high efficiency BLDC inverter technology to compressor and fan motor to have CO2 emission reduc-tion effect through energy saving. (6 harmful materials: Lead, Cadmium, Cr6+, Mercury, Polybrominatedbiphenyls, Polybrominated biphenylethers)5 Outdoor Unit _ HMI ControllerHMI ControllerAir-Cooled Scroll Chiller (R410A)3. HMI ControllerHMI (Human Machine Interface) can control and monitor various functions such as freezer temperature setting,schedule management, freeze and burst prevention, etc., and one HMI can manage by adding up to 3 modules.HMI installed in this product is designed around with the following major functions. BLDC inverter compressor is applied to make high efficiency possible in both high load and small load environ-ment. According to the cycle, control commands such as Start/Stop, operation mode, temperature setting, etc. can bemade. Through the monitoring functions such as temperature, set time, current, pump output, etc., you can find out thestatus of each cycle. Schedule function is provided to make reservation of control command. You can operate each schedule pattern function for desired pattern. With Demand Limit function, you can limit maximum power consumption.The following shows the screen of system view among the entire structure of HMI and HMI composition.Log inHome ScheduleWeekly scheduleWeekly schedule editionHistory SettingView systemView systemStatus 1User SettingService settingProduct informationUser Setting 1User Setting 2UserManagerIt can be accessed and used by manager log-inIt can be accessed by user log-inCycleView cycleCycle temperature6 _ Outdoor UnitHMI ControllerHMI ControllerAir-Cooled Scroll Chiller (R410A)3. HMI Controller Management of combined module and control and monitoring of eachcycle in the unit module You can select the whole combined modules or select unit module and control and monitor the followingcategories, so you can monitor and control the equipments with only HMI. Management cost savingHMI can control freezer from 500m away through cable. Therefore, HMI can be installed in indoor management room and the manager can control all functionsthrough HMI in the management room. If manager is in the management room, all equipments can be easily operated or managed, and if schedulemanagement function of HMI is used, through reserved control commands, equipments can be operatedwhile manager is not at the site. Convenient GUIIntuitive and simple interface is provided for users to be able to find out the functions easily, and throughthis, managers can conveniently control the equipments without special training. Automatic schedule management operationYou can set schedule to automatically operate the equipments, and you can add up to 5 schedule patterns.Through such schedule management function, you can manage the equipments more efficiently, and byusing pattern function, you can easily and quickly set the operation schedule that is suitable for the situation. Various automatic control functionsHMI provides various automatic control functions such as schedule management function, freeze and burstprevention mode, remote control, etc. History functionHMI can manage the history of all errors occurred in the system. Using such error history function, freezermanager can react to the error operations of the equipments more reasonably and faster.Equipment Control MonitoringModuleStart/Stop/ResetLoad water inlet/outlet temperature, Target temperature, outdoor temperature,status display, remaining time until activation, load water Flow Switch, loadPump Interlock, load pump output, Alarm statusCycleOn/off status for each cycle and Hz display, saturated condensing temperaturedisplay, saturated evaporation temperature display, each compressors dis-charge temperature display, average suction temperature display, EEV Pulsedisplay, each cycles load water out temperature display, condensing pipe tem-perature display, Hot gas solenoid valve on/off status display7 Outdoor Unit _ NomenclatureAir-Cooled Scroll Chiller (R410A)4. NomenclatureModel type : A = Module modelB = Independent modelC = Slave modelPower specification : B = 208/230 V, 60 Hz, 3Cooling capacity (RT) : 060 = 60 RT040 = 40 RT020 = 20 RTCompressor type : R = Scroll(Low pressure type)H = Scroll(High pressure type)Cooled type : A = Air cooled C/OW = Water cooled C/OH = Air cooled H/PK = Water cooled H/PProduct type : C = ChillerArea of production Refrigerant : A = South Korea R410AACA H 060BAMB Communication method : A = ModbusSerial8 _ Outdoor Unit Selection ProcedureAir-Cooled Scroll Chiller (R410A)5. Selection Procedure Selection guideThe product information required in various requirements is written in detail from Chapter 6.If you need a product for special system application or product with the condition outside this PDB, please getconsultation from nearby sales office or specialty store. Selection procedure1. Check usage conditionBefore selecting the model, the following usage conditions must be decided.- Cold and hot water in/out temperature and outdoor temperature- Cold and hot water flow amount (flow amount can be calculated if you know the freezing load and chilled water in/out temperature.)2. Selecting candidate modelRequired rated capability is selected through load calculation, and you can select the corresponding modelby looking at Chapter 8 Cooling/heating capability change table.When you select the candidate model, do not select a model with less volume than the required rated capa-bility, but select a model with the same or bigger volume.3. Performance adjustment for foulingThe data in this technical data manual is based on chilled water fouling coefficient of 0.000018 m/W atsea level.If altitude or fouling coefficient is different, you have to apply appropriate adjustment coefficient form the fol-lowing table to calculate data for the operation condition.AltitudeWater in/outtemperaturedifference ()Fouling coefficient0.000018 m2/W 0.000054 m2/WCooling capabilityPower consumptionCooling capabilityPower consumption Sea level (0m)4 0.991 0.998 0.979 0.9965 1.000 1.000 0.990 0.9986 1.010 1.002 1.001 1.0007 1.020 1.005 1.010 1.0038 1.028 1.006 1.019 1.004500 m4 0.988 1.004 0.979 1.0025 0.998 1.006 0.988 1.0046 1.008 1.008 0.998 1.0067 1.017 1.010 1.008 1.0088 1.026 1.012 1.017 1.0101 000 m4 0.985 1.011 0.977 1.0085 0.995 1.013 0.985 1.0106 1.005 1.015 0.995 1.0127 1.014 1.017 1.005 1.0148 1.023 1.019 1.014 1.0161 500 m4 0.982 1.018 0.974 1.0165 0.992 1.020 0.983 1.0186 1.002 1.022 0.993 1.0207 1.011 1.025 1.003 1.0238 1.020 1.027 1.011 1.0259 Outdoor Unit _ Selection ProcedureAir-Cooled Scroll Chiller (R410A)5. Selection Procedure4. Performance adjustment after adding freeze and burst prevention solution If cooling operation is performed in Winter, or if water inside the cycle is not removed in the resting phase, youhave to add freeze and burst prevention solution to protect from freeze and burst.Freezer characteristics change by adding freeze and burst prevention solution, so it should be adjusted.Refer to the following table for the adjustment coefficient after adding freeze and burst prevention solution.5. Finalizing the model As a result of verifying product performance and power consumption considering various adjustment coefficientsfor the candidate models, if there is no problem, you can finalize it as the final model.If there is a problem, review again from the candidate model selection stage.1. Site with outdoor temperature is 30, fouling coefficient is 0.000054m/W, altitude is 500m, ethyleneglycol volume concentration 30% added chilled water is used, required cooling capability is 65kW, chilledwater in/out condition is 149.2. Find appropriate model in product dimension table (Chapter 7) and verify power consumption, dimension, etc.- Candidate model ACAH020BBAM: cooling capability 60kW, power consumption 21.9kW, COP 2.74,dimension: 765 x 2 351 x 2 154 mm3. Check the capability and power consumption in the usage condition of the selected model by coolingcapability change table (Chapter 8).- Chilled water in/out condition: in 14 9 condition, cooling capability: 71.6 kW, power consumption:23.2 kW, COP: 3.14. Carry out performance adjustment after fouling and freeze and burst solution addition.- Cooling capability: 71.6 X 0.988 x 0.987 =69.8 kW- Power consumption: 23.2 X 1.006 = 23.3 kW5. Calculate freezer power consumption in usage condition.- Load ratio: required cooling capability / model cooling capability = 65/ 69.8 = 0.93- In rated condition, power consumption model power consumption x load ratio = 23.3 x 0.93 = 21.7 kW6. Calculate flow amount and pressure loss in usage condition.- Formula to get flow amount: /min = kW X 12.9 / TFlow amount = 65 kW X 12.9 / 5 = 168 /min- Pressure loss: from Chilled water head loss table (Chapter 10), get pressure loss of the correspondingmodel in the corresponding flow amount.Pressure loss of ACAH020BBAM at 168/min is about 26kPa, and pressure loss coefficient by addingfreeze and burst prevention solution is 1.124, so total pressure loss is 26 X 1.124=29kPa.7. Review if the calculated specification is suitable for the site.u Example: selecting modelAntifreeze Type ItemAntifreeze % by wt10 % 20 % 30 % 40 % 50 %MethanolCooling 0.998 0.997 0.995 0.993 0.992Heating 0.995 0.990 0.985 0.979 0.974Pressure Drop 1.023 1.057 1.091 1.122 1.160Ethylene glycolCooling 0.996 0.991 0.987 0.983 0.979Heating 0.993 0.985 0.977 0.969 0.961Pressure Drop 1.024 1.068 1.124 1.188 1.263Propylene glycolCooling 0.993 0.987 0.980 0.974 0.968Heating 0.966 0.973 0.960 0.948 0.935Pressure Drop 1.040 1.098 1.174 1.273 1.40510 _ Outdoor Unit Operation Range & LimitAir-Cooled Scroll Chiller (R410A)6. Operation Range & Limit Range of outlet water temperature Range of outlet air temperature Operation LimitModelCold water outlet temperature ()Min. 1) Max.ACAH020BBAM5 15ACAH040BBAM/ACAH040BCAM 5 15ACAH060BBAM/ACAH060BCAM5 15ModelOutdoor air temperature - CoolingMin. Max.ACAH020BBAM-5 48ACAH040BBAM/ACAH040BCAM -5 48ACAH060BBAM/ACAH060BCAM-5 48ModelVoltage (V) Capacity Cold water flow rate(/min)Min. Max. Min. Max. Min. 2) Max.ACAH020BBAM187 253 10 % 100 % 126 250ACAH040BBAM/ACAH040BCAM 187 253 10 % 100 % 252 500ACAH060BBAM/ACAH060BCAM187 253 10 % 100 % 378 75011 Outdoor Unit _ 7. Specifications SpecificationsAir-Cooled Scroll Chiller (R410A)Notes:1. Due to our policy of innovation some specifications may be changed without prior notification.2. Capacities and Inputs are based on the following conditionsCooling : Outdoor air temp. 35C [95F]DB, Water inlet temp. 12C[53.6F], Water Outlet temp. 7C[44.6F]Heating : Outdoor air temp. 75C [44.6F]DB, Water inlet temp. 40C[104F], Water Outlet temp. 45C[113F] Main UnitsModel Namet ACAH020BBAM ACAH040BBAM ACAH060BBAMFeaturePower Supply , V, HzCooling CapacityBtu/hkWkcal/hPower Input kWCOP W/WIPLV W/WCompressorType (Number) -Hermetically Sealed DCScroll (1) + Constant (2)Hermetically Sealed DCScroll (2) + Constant (4)Hermetically Sealed DCScroll (3) + Constant (6)Oil Type -Oil Charge ccSump Heater WRefrigerantRefrigerant Name -Weight kgControl -FanType -Motor Type -Motor output x Number WAir Flow VolumeCMMCFMEvaporatorType -Water resistance loss kPaPressure Feed Refrigerant/Water kg/cm2Water inlet/outlet pipeline diameter -Water flow volume LPMCondenserType -Number EANet WeightkglbsDimension (W x H x D)mminchProtectionDevicesHigh/Low Pressure Sensor & High Pressure Switch -Frost protection Sensor -Discharge Temperaure Sensor -Over-heat Protection (Compressor / Motor) -Reversed Phase Detector -Water Flow Switch -Remote Control Type -OperatingRangeWater Outlet Temperature COutdoor air Temperature C3, 208/230, 60204,74960.051,60021.92.744.60FVC68D(PVE )4,20060 x 3R410A13EEVPropeller FanDC Inverter900 x 2190 x 26710 x 2Plate3042 / 1040A / 40A155Copper-fin-coil25701,256765 x 2,354 x 2,15430.1 x 92.7 x 84.8OOOOOOModbus5~15-5~483, 208/230, 60409,498120.0103,20043.82.744.60FVC68D(PVE )4,200*260 x 6R410A26 (13 x 2)EEVPropeller FanDC Inverter900 x 4190 x 46710 x 4Plate3042 / 1065A / 65A310Copper-fin-coil410702,3591,528 x 2,354 x 2,15460.2 x 92.7 x 84.8OOOOOOModbus5~15-5~483, 208/230, 60614,246180.0154,80065.72.744.60FVC68D(PVE )4,200*360 x 9R410A39 (13 x 3)EEVPropeller FanDC Inverter900 x 6190 x 66710 x 6Plate3042 / 1065A / 65A465Copper-fin-coil615583,4342,291 x 2,354 x 2,15490.2 x 92.7 x 84.8OOOOOOModbus5~15-5~4812 _ Outdoor Unit7. SpecificationsSpecificationsAir-Cooled Scroll Chiller (R410A)Model Namet ACAH040BCAM ACAH060BCAMFeaturePower Supply , V, HzCooling CapacityBtu/hkWkcal/hPower Input kWCOP W/WIPLV W/WCompressorType (Number) -Hermetically Sealed DC Scroll (2)+ Constant (4)Hermetically Sealed DC Scroll (3) + Constant (6)Oil Type -Oil Charge ccSump Heater WRefrigerantRefrigerant Name -Weight kgControl -FanType -Motor Type -Motor output x Number WAir Flow VolumeCMMCFMEvaporatorType -Water resistance loss kPaPressure Feed Refrigerant/Water kg/cm2Water inlet/outlet pipeline diameter -Water flow volume LPMCondenserType -Number EANet WeightkglbsDimension (W x H x D)mminchProtectionDevicesHigh/Low Pressure Sensor & High Pressure Switch -Frost protection Sensor -Discharge Temperaure Sensor -Over-heat Protection (Compressor / Motor) -Reversed Phase Detector -Water Flow Switch -Remote Control Type -OperatingRangeWater Outlet Temperature COutdoor air Temperature CNotes:1. Due to our policy of innovation some specifications may be changed without prior notification.2. Capacities and Inputs are based on the following conditionsCooling : Outdoor air temp. 35C [95F]DB, Water inlet temp. 12C[53.6F], Water Outlet temp. 7C[44.6F]Heating : Outdoor air temp. 75C [44.6F]DB, Water inlet temp. 40C[104F], Water Outlet temp. 45C[113F]3. Slave Unit donst have HMI, Only Main Unit have HMI. Slave Unit3, 208/230, 60409,498 120.0 103,200 43.8 2.74 4.60 FVC68D(PVE )4,200*260 x 6R410A26 (13 x 2)EEVPropeller FanDC Inverter900 x 4190 x 46710 x 4Plate3042 / 1065A / 65A310Copper-fin-coil41,0702,3591,528 x 2,354 x 2,15460.2 x 92.7 x 84.8OOOOOOModbus5~15-5~483, 208/230, 60614,246 180.0 154,800 65.7 2.74 4.60 FVC68D(PVE )4,200*360 x 9R410A39 (13 x 3)EEVPropeller FanDC Inverter900 x 6190 x 66710 x 6Plate3042 / 1065A / 65A465Copper-fin-coil615583,4342,291 x 2,354 x 2,15490.2 x 92.7 x 84.8OOOOOOModbus5~15-5~4813 Outdoor Unit _ Performance Data of Cooling8. Performance Data of CoolingnACAH020BBAMNotes:1) Unit : Capacity/Power input (kW), COP (W/W)2) Water flow rate of test condition : 155 LPM Outdoor AirTemp.() ClassificationWater Outlet Temperature () 5 7 9 11 13 15CapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPAir-Cooled Scroll Chiller (R410A)66.1672.1578.1082.4586.1590.10 5/0.5 18.3219.8520.5020.4022.8122.87 3.613.643.814.043.783.94 64.5070.1376.6080.4584.4687.46 10/4.5 18.4019.5020.5820.8021.0622.15 3.513.603.723.874.013.95 64.4068.0075.1078.4081.5083.50 15/8.5 19.3020.0020.6721.0121.8022.00 3.343.403.633.733.743.80 62.4065.9469.1074.4079.1381.10 20/12.5 19.8020.8021.0021.8022.3822.50 3.153.173.293.413.543.60 59.6064.9067.2071.5076.8179.60 25/16.3 20.8321.4521.8622.1822.6822.90 2.863.033.073.223.393.48 56.3861.9364.4768.1371.7974.70 30/20 21.1021.6722.0022.8023.4623.65 2.672.862.932.993.063.16 54.0060.0062.6965.2067.7670.80 35/24 21.9021.3422.2023.0023.6024.51 2.472.812.822.832.872.89 48.8951.2653.6356.7859.9366.68 40/27.8 24.8024.9025.1025.2725.3525.64 1.972.062.142.252.362.60 40.9044.0547.2349.6552.1054.07 45/32 24.9025.1225.7225.8025.8025.88 1.641.751.841.922.022.09 14 _ Outdoor UnitPerformance Data of CoolingAir-Cooled Scroll Chiller (R410A)8. Performance Data of CoolingnACAH040BBAM / ACAH040BCAMNotes:1) Unit : Capacity/Power input (kW), COP (W/W)2) Water flow rate of test condition : 310 LPM Outdoor AirTemp.() ClassificationWater Outlet Temperature () 5 7 9 11 13 15CapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOP132.31144.30156.20164.90172.31180.20 5/0.5 36.6339.6941.0040.8045.6245.75 3.613.643.814.043.783.94 129.00140.25153.20160.90168.91174.91 10.4.5 36.8039.0041.1641.6042.1244.30 3.513.603.723.874.013.95 128.80136.00150.20156.80163.00167.00 15.8.5 38.6040.0041.3342.0243.6044.00 3.343.403.633.733.743.80 124.80131.88138.20148.80158.25162.20 20.12.5 39.6041.6042.0043.6044.7545.00 3.153.173.293.413.543.60 119.20129.80134.40143.00153.62159.20 25/16.3 41.6542.9043.7244.3745.3645.80 2.863.033.073.223.393.48 112.77123.86128.95136.26143.57149.40 30/20 42.2043.3444.0045.6046.9247.30 2.672.862.932.993.063.16 108.00120.00125.37130.40135.53141.60 35/24 43.8042.6844.4046.0047.2049.01 2.472.812.822.832.872.89 97.79102.52107.26113.56119.86133.36 40/27.8 49.6049.8050.2050.5450.7051.27 1.972.062.142.252.362.60 81.8088.1094.4699.30104.20108.13 45/32 49.8050.2351.4551.5951.6051.76 1.641.751.841.922.022.09 15 Outdoor Unit _ Performance Data of CoolingAir-Cooled Scroll Chiller (R410A)8. Performance Data of CoolingnACAH060BBAM / ACAH060BCAMNotes:1) Unit : Capacity/Power input (kW), COP (W/W)2) Water flow rate of test condition : 465 LPM Outdoor AirTemp.() ClassificationWater Outlet Temperature () 5 7 9 11 13 15CapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOPCapacityPower inputCOP198.47216.45234.30247.35258.46270.30 5/0.5 54.9559.5461.5061.2068.4468.62 3.613.643.814.043.783.94 193.50210.38229.80241.35253.37262.37 10.4.5 55.2058.5061.7462.4063.1866.45 3.513.603.723.874.013.95 193.20204.00225.30235.20244.50250.50 15.8.5 57.9060.0062.0063.0365.4066.00 3.343.403.633.733.743.80 187.20197.82207.30223.20237.38243.30 20.12.5 59.4062.4063.0065.4067.1367.50 3.153.173.293.413.543.60 178.80194.70201.60214.50230.42238.80 25/16.3 62.4864.3565.5866.5568.0468.70 2.863.033.073.223.393.48 169.15185.79193.42204.39215.36224.11 30/20 63.3065.0166.0068.4070.3870.96 2.672.862.932.993.063.16 162.00180.00188.06195.60203.29212.40 35/24 65.7064.0266.6069.0070.8073.52 2.472.812.822.832.872.89 146.68153.78160.89170.34179.80200.04 40/27.8 74.4074.7075.3075.8176.0576.91 1.972.062.142.252.362.60 122.70132.15141.70148.95156.31162.20 45/32 74.7075.3577.1777.3977.4077.65 1.641.751.841.922.022.09 16 _ Outdoor UnitHead loss of Cold waterAir-Cooled Scroll Chiller (R410A)9. Head loss of Cold water ACAH Series evaporator head loss graph0 20 40 60 80 100 120 140 02004006008001000120014001600 Pressure Drop (kPa)Water Flow Rate (LPM)20 RT40 RT60 RT 17 Outdoor Unit _ DimensionsAir-Cooled Scroll Chiller (R410A)10. Dimensions Model : ACAH020BBAMA C E F G D B Water Inlet (40A) Water Outlet (40A) Classification 20 RTA 765B 2 198C 2 354D 2 154E 200F 660G 206- Side view- - Front view-- Rear view-(Unit : mm)18 _ Outdoor UnitDimensionsAir-Cooled Scroll Chiller (R410A)10. DimensionsA C D B G E F Water Inlet (65A) Water Outlet (65A) Model : ACAH040BBAM / ACAH040BCClassification 40 RTA 1 528B 2 198C 2 354D 2 154E 200F 660G 142- Side view- - Front view-- Rear view -(Unit : mm)19 Outdoor Unit _ DimensionsAir-Cooled Scroll Chiller (R410A)10. DimensionsA C D B E F Water Inlet (65A) Water Outlet (65A) G Model : ACAH060BBAM / ACAH060BCAM- Side view- - Front view-- Rear view-Classification 60 RTA 2 291B 2 198C 2 354D 2 154E 200F 660G 142(Unit : mm)20 _ Outdoor UnitBase of InstallationAir-Cooled Scroll Chiller (R410A)11. Base of Installation Details to consider when installing the base The base must be able to withstand concentrated load. The base must be installed with maximum gradient of 1/300. The height of the base must be higher than the surface of the water and drain holes must be installed around. Set the height of the base according to the installation environment so that the product is not submersed inwater. The default height of the base is 200mm and it must be at least doubled in areas with double the snowfallof 100mm or above. Install the drain pipe in the drain hole. The drainage must be finished so that particles around the drainage do not clog the pipes. LG is not responsible for product failure or damage from incorrectly designed or manufactured base. Dimension Shape of anchor bolt Specification of anchor bolt20 RT 40 RT 60 RTA 865 1 628 2 391B 765 1 528 2 291C 2 254 2 254 2 254D 2 154 2 154 2 154E 691 1 456 2 217F 1 707 1 707 1 707(Unit : mm)50150A465Apply 3/1000of slope100A273.550BFDCE 87DrainholeScrew size (d) L S D L1 Used drillDepth of drill(min.)Pullout load(N)5/8 (M16) 125 70 22 65 22 65 42 140< 20RT Drawing of base > Shape of anchor boltD 21 Outdoor Unit _ Base of InstallationAir-Cooled Scroll Chiller (R410A)11. Base of Installation50150A A465Apply 3/1000of slope Apply 3/1000of slope100A273.550BFDCE 8550A273.550BFDCE 87150465100DrainholeDrainhole< 40RT Drawing of base > < 60RT Drawing of base >22 _ Outdoor UnitElectric CharacteristicsAir-Cooled Scroll Chiller (R410A)12. Electric CharacteristicsElectric specification1. RLA is the current required when operated in the following condition. Outdoor temperature: 35C DB/24.0C WB, cold water inlet/outlet temperature: 12/7C2. Voltage rangeThe chiller must be operated at the voltage within the upper and lower limit supplied from the power terminal tooperate normally. 3. Maximum voltage variance permitted between phases is 2%.4. MCA is the criteria of selecting the wiring standard. 5. MFA is used when selecting circuit breaker and grounding error circuit breaker (Electricity leakage circuit breaker). ACAH FrequencyVoltage(V)RLA(A)MCA(A)MFA(A)Inv. Comp Const. Comp Fan MotorQty RLA Qty RLA LRA Qty RLA020BBAM60 208/230 80.0 87.0 115.0 1 28.0 2 22.0 140 2 4040BBAM040BCAM60 208/230 160.0 167.0 195.0 2 28.0 4 22.0 140 4 4060BBAM060BCAM60 208/230 240.087.0 115.03 28.0 6 22.0 140 6 4167.0 195.0Notes:MCA: Minimum Circuit Ampere, AMFA: Maximum Fuse Ampere, ARLA: Rated Load Ampere, AMSC: Maximum Start Current, A23 Outdoor Unit _ Wiring DiagramsAir-Cooled Scroll Chiller (R410A)13. Wiring Diagrams 20RT24 _ Outdoor UnitWiring DiagramsAir-Cooled Scroll Chiller (R410A)13. Wiring Diagrams 40RT, 60RT : Main cycle of Main Unit 25 Outdoor Unit _ Wiring DiagramsAir-Cooled Scroll Chiller (R410A)13. Wiring Diagrams 40RT, 60RT : Main cycle of Slave Unit 26 _ Outdoor UnitWiring DiagramsAir-Cooled Scroll Chiller (R410A)13. Wiring Diagrams 40RT, 60RT : Sub cycle of Main & Slave Unit 27 Outdoor Unit _ Installation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of ChillerSelecting installation location Precaution when selecting the installation locationSelect the location that fits the following conditions to install the product. Location without direct heat from other heat source Location where noise of the chiller does not have negative impact to the neighbors Check the installation direction of the unit for the seasonal wind during the winter. Install the product so that the seasonal wind does not affect only one side of the product. Location not exposed to strong winds Location that can support the weight of the chiller Location with space for air flow and service Install the boundary sign, danger sign or barricade, if necessary. It is recommended to install a fence around chiller so that people or animals will not be able to access thearea. When installing the product in areas with high humidity during the winter (Coast, seaside, lakeside), install theproduct where it is well ventilated and has plenty of exposure to sunlight. (Ex: Roof top with sunlight) If the product does not run during the winter, establish a plan to use the anti-freeze for the water supply. To prevent the condensed water from flowing, insulate the connected evaporator and pipe. To smoothly drain the condensed water, establish an inclined structure. Avoid installing the product at locations with the following conditions. - Location with corrosive gas such as acid or alkali gas.(Coolant can leak from the corroded pipes.)- Location with electromagnetic wave. (It can cause the product to malfunction from defective parts.)- Location where flammable gas is generated or flows to prevent fire.- Location with high level of carbon fiber or dust- Special location exposed to oil, steam or emulsified gas28 _ Outdoor UnitInstallation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of Chiller Precaution for seasonal wind and winter seasonIn areas with heavy snow or in extremely cold areas, sufficient planning is required for the product to runsmoothly. Even in other areas, planning is required for seasonal wind during the winter season. Snow can go into the air discharge outlet of the condenser to freeze inside the chiller. Therefore install alarge cover over the chiller for areas with heavy snowfall to prevent the snow from accumulating on the top. The chiller can freeze inside when the air inlet is clogged with snow. Therefore install the chiller on the basewith at least twice the height of the average snow accumulation. (Default height of base: 300mm) If there is more than 100mm of snow on top of the chiller, always operate the unit after cleaning the snow. Do not install the product where there could be negative impact from snow in areas with heavy snowfall.Decide the installation direction of the chiller so that the side of the air heat exchanger does not face thedirection of the snow. (Make the side of the air heat exchanger parallel to the direction of the snowfall.) Install a blocker with theheight of the snow accumulation to avoid the snow around the chiller from being sucked into the coil side.(Prepare on site) If the wind comes in one direction of the unit where the seasonal wind is strong, there is a high chance that itcan lead to issue with product capacity or imbalance of load. Therefore install the product so that it has con-sistent effect on the product cycle. If that is not possible, consider using a wind blocker or other devices. Inareas with strong seasonal wind during the winter, apply the wind blocker hood, especially near the coastalarea, without blocking the suction inlet of the chiller considering the direction of the wind. If the chiller isdirectly exposed to the seasonal wind during the winter, separately install a wind buffle. (Prepare on site)29 Outdoor Unit _ Installation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of ChillerIf the product has to be installed inevitably facing the coast, install a wall around the outdoor unit. Install the product where the drainage is smooth. The wall must be made of sufficiently strong material such asconcrete to block the coastal wind and must be 1.5 times largerthan the size of the product to protect the product 1000mmapart. There must be 1000mm of clearance between the walland the chiller for smooth circulation of air. Coastal windWall* Selecting location of chillerInstall the chiller where the building can block the coastal wind. Coastal wind Coastal windInstallation Guide at the seasideCAUTION When installing the chiller near the coast, make sure that it is not directly exposed to the coastal wind. When installing the chiller directly exposed to the coastal wind, separate anti-corrosive treatment must bedone on the condenser of the chiller. 30 _ Outdoor UnitInstallation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of Chiller (Unit: mm)800+h1/2h1800WallAir Ceiling(Unit: mm)8005,000WallAirWhen installing the product, secure minimum space as shown below considering the service, suction and dis-charge of air flow. Consider the ventilation condition.The air cooled chiller must be installed on open space or must have appropriate ventilation. When installed along the wall, there must be sufficient space for ventilation. ReferenceIf the side of the chiller is near the wall and the height of the wall is less than 800mm, the distance between the walland the chiller must be at least 800mm. If the side of the chiller is near the wall and the wall is 800mm or higher,space of half of h1 must additionally be secured on top of the 800mm for the distance between the wall and the chiller. ReferenceIf there is a ceiling on the top part of the chiller, the distance from the chiller to the ceiling must be 5000mm or above. If the front or rear side of the chiller is close to the wall, the distance from the wall to the chiller must be 800mm orabove. 31 Outdoor Unit _ Installation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of ChillerService space800 mm800 mm800 mm 800 mm600 mm800 mm 800 mmService spaceBecause this is the space where the water pipes are installed, make sure to secure sufficient space for future maintenance and repair work.Because this is the space where the water pipes are installed, make sure to secure sufficient space for future maintenance and repair work.Consider the service space. There must be sufficient space for maintenance and repair work around the chiller. 32 _ Outdoor UnitInstallation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of ChillerCold water managementThe water quality of the cold (hot) water is described as follows. The water quality must not fall below thefollowing standard. If so, it can be judged to have risk within relatively short period of time. Item Cold waterCirculation type cold water Cold waterReference PH(25C) 6.5 - 8.0 6.5 - 8.0Conduction rate (25C s/cm) 500 or below 200 or belowAlkali level (PPM) 100 or below 50 or belowHardness (PPM) 100 or below 50 or belowChlorine ion (PPM) 100 or below 50 or belowLactic acid ion (PPM) 100 or below 50 or belowIron (PPM) 0.1 or below 0.3 or belowSulfur ion (PPM) Not detected Not detectedAmmonium ion (PPM) 0.5 or below 0.2 or belowSilica (PPM) 50 or below 30 or belowWater pipe connection Connect the pipe so that the entrance of the cold (hot) water pipe is correct. Permitted water pressure resistance of cold water pipe system is 1MPa To prevent any external heat loss or dew drops forming during the cooling operation on the water pipe system, applythermal insulation treatment. Install the air vent at the output end of the water pipe. (Air vent) If the thermometer is installed on the inlet/outlet of the cold/hot water pipe, the operating condition of the chiller can bechecked. Always install the strainer (50 Mesh or above) that can be cleaned on the water pipe inlet side to filter any alien particlesfrom entering the heat exchanger. Always install the strainer on the leveled pipe. (If sand, trash or rust gets mixed to the cold water system, it can causeproduct failure due to corrosion of metallic parts.) Install the on/off valve on the cold water inlet/outlet and bypass pipe on the pipe direction of the device side.- For the pipe system, it is recommended to install the bypass and clean the pipe before installing the product and duringthe annual pipe cleaning. - On/Off valve blocks the old water to the chiller that is not operating to reduce the power of the pump. Therefore selectwhether to install to fit the need of the site. Install the pressure gauge and thermometer on the inlet and outlet of the water pipe. Always install the flexible joint to reduce the vibration of the pipe and product. - Vibration of water pipe system is absorbed to prevent water leakage. For the cold water system part, make sure to use the component that complies with designed water pressure or above. Before supplying cold water to the chiller, clean inside the pipe system to remove any negative impact of particles to theproduct. 33 Outdoor Unit _ Installation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of Chiller* Independent product installation * Independent product installationLG suppliedP1 T1 T2 P2 LG suppliedP2 T2 P1 T1 Symbol Description Symbol DescriptionValve T1 Temperature sensor (1: Inlet 2: Outlet)StrainerP1Pressure gauge (1: Inlet, 2 Outlet)Flexible joint Cold water pumpInstallation mode A (Recommended method)34 _ Outdoor UnitInstallation of ChillerAir-Cooled Scroll Chiller (R410A)14. Installation of Chiller* Independent product installation * Independent product installationP2 T2 P1 T1 LG suppliedP2 T2 P1 T1 LG suppliedSymbol Description Symbol DescriptionValve T1 Temperature sensor (1: Inlet 2: Outlet)Strainer P1 Pressure gauge (1: Inlet, 2 Outlet)Flexible joint Cold water pumpInstallation mode B35 Outdoor Unit _ 14. Installation of ChillerInstallation of ChillerAir-Cooled Scroll Chiller (R410A)Full product capacity 20RT 40RT 60RT 80RT 100RT 120RT 140RT 160RT 180RTCommon pipe size 40Avv 65A 65A 80A 80A 100A 100A 100A 125AProduct20RT 40RT 60RT Water pipe installation Appropriate pressure of pipe connection is flange connection of 1 MPa or below. Size of the water pipe must be the same as that of the product or larger. If there is risk of dew drops forming, always install the thermal insulation material on the outlet pipe of the cold water. To avoid connected water pipe from creeping from the load, use appropriate hook for support. To prevent the pipe connected part from freezing during the winter season, always install the drain valve at the mostbottom of the pipe system. Cold water inlet pipe is located at the bottom and the outlet pipe is installed on the top. When connecting several chillers, refer to the following for common pipe size. Cold water pump control If the cold water pump is not operating for a long period of time or if the anti-freeze liquid is not used as the cold water, theanti-freeze pump control must be installed to prevent the pipe from freezing. The vibration of the pump can transfer to the pipe to cause noise indoors. As the plan to prevent the noise from spreadingin the pump, install flexible joints at the inlet/outlet and use the anti-vibration amount for the pump support. CAUTION If the winter outdoor temperature is 0C or below, take following measures to prevent the pipe fromfreezing as shown below.- If the outdoor temperature is low, the circulation water can freeze to damage the heat exchanger ofthe product when the product is stopped. If there is possibility of damage from low outdoor temperature, operate the pump to prevent thewater from freezing. - If the product does not operate for a long period of time during the winter season, remove all the cir-culation water to prevent the damage of heat exchanger and pipe from freezing. - Add anti-freeze additive to prevent the circulation water from freezing during the winter season. Maintain the cold water flux within the designed flux to ensure appropriate chiller performance andreduce the tube damage from rusting, scaling and corrosion. LG is not responsible for any damage ofchiller from poor water quality management or inappropriate processing water.36 _ Outdoor Unit14. Installation of ChillerInstallation of ChillerAir-Cooled Scroll Chiller (R410A)1) Communication cable connectionRefer to the above figure to connect the communication cableFor the communication cable, distinguish 11A and 11B toconnect to the slave units.2) Use 2-line shield cable as the communication cable. 3) Separately install the communication and power cable of the chiller so that the communication cable is not affected bythe electric noise generated from power cable. (Do not pass though the same electric pipe)4) Unit combination is able to connect up to 3 unitsSlave unit Slave unit11A11B11A11BHMI controller : Field wiringThere is no HMI in Slave units Master unitTerminalBlock TerminalBlock TerminalBlock 11A11BWARNINGElectric work using special circuit based on the overall regulation and this manual must be done byqualified electrician. If the capacity of the power supply circuit is insufficient or if there is a defect, it can cause electric shockor fire.Unit Combination37 Outdoor Unit _ Specification of ProductionAir-Cooled Scroll Chiller (R410A)15. Specification of ProductionManufacturing specification1) Use the parts and material of KS standard products or equivalent products for those not specified in this specification,and all parts should be designed with structure that is easy for replacement, repair, and inspection.2) If there is a problem in the freezer, or if there is an abnormal status of chilled water temperature and flow amount, etc.,immediately stop the freezer operation and you have to be equipped with marking equipment or function that can easilyidentify these.3) There should be a protection circuit to prevent freezer damage by blackout or frequent voltage variation from KEPCO.4) Freezer should be able to operate silently without abnormal noise or abnormal vibration.5) Freezer should be composed of the central controller and the circuit possible for wired/wireless Start/Stop operation.6) Easy combination should be possible with compact product design and module type design, and basic moduleinsertion and assembly installation should be possible regardless of the volume.7) It should be the structure possible for substitute operation even if compressor or some cycle parts fail and coolingoperation should be possible during parts replacement, repair, or inspection.8) The main power cable equivalent or above the specification presented in the product specification of eachcorresponding model should be used for the freezer, each communication line and power cable should use cable pipefor protection, and the cable pipe with the material that can block external noise according to the installationenvironment should be used.Air cooled type scroll freezer product specification1. Case1) It should have the structure that is easy for disassembly and assembly for easy maintenance/repair.2) It should have a beautiful exterior and it should be insulated to prevent dew condensation.3) It should have the structure preventing vibration and abnormal noise.4) It should have the structure that can be grounded.2. Compressor1) R410A refrigerant should be used, case shape should be sealed type, format should be the combinationof inverter scroll compressor and fixed speed scroll compressor, it should be flexible to respond to load,and it should be a high efficiency system that can optimize energy efficiency through inverter control.2) Vibration prevention rubber should be used to prevent transfer of noise and vibration during operation.3) The frequency variable boundary of inverter scroll compressor should be minimum 25Hz and maximum105Hz.4) Alternating operation should be possible to have the uniform average operation time of the compressors.3. Condenser1) Condenser heat pipe should use purity 99.9 % or above Phosphorus Deoxidized Copper without joint,and it should have the structure with Al fin attached to increase the heating area. (Cross fin & Tube type)2) Use wide louver fin for Al fin, and pipe extension should be carried out for efficient heat transfer.3) Condenser air cooled type heat exchanger arrangement should be 3 rows 48 levels 15FPI.4) The pressure endurance test for high pressure part refrigerant side should be carried out at 4.18 MPa orabove (designed pressure 3.8 MPa), and there should be problems such as leakage or deformation. 38 _ Outdoor UnitSpecification of ProductionAir-Cooled Scroll Chiller (R410A)15. Specification of Production5) The condensing coil that passed pressure endurance test should be vacuumed to completely removemoisture inside.6) Use propeller type Fan, and it should be able to give sufficient wind amount required for condensing.Also, it should have sufficient strength for the number of rotations, and it should be operated silentlythrough balance test.7) Motor should be BLDC type that can increase efficiency.8) Fan and Motor should be connected directly.4. Electronic Expansion Valve1) It is the part that insulates and expands high pressure fluid refrigerant at condenser exit in lowtemperature low pressure state, and during cooling operation, line shape electronic expansion valveshould be activated to adjust adequate refrigerant amount according to the evaporator load.2) Based on data of various sensors installed in the freezer, microcomputer unit should be able to analyzeoperation status of the system and compressor to control the most adequate refrigerant amount linearly.3) By applying electric pulse signal to stepping motor, it should be able to play the role of adjusting therefrigerant flow amount.5. Evaporator1) Evaporator should be blazing plate type heat exchanger type, and the material should be stainless steel.2) There should be no water leakage, and the durability should be guaranteed.3) It should have the structure that can connect to chilled water pipe.4) Heat exchanger should be sensible heat exchange structure that the refrigerant and coolant are notmixed.5) It should be a structure that each of coolant and refrigerant are flown into countercurrem structure heatexchanger and after heat is exchanged with each other through the thin valve inside heat exchanger,discharged outside heat exchanger.6) In the destruction test, it should endure 18 MPa pressure.6. Control equipment1) It is the controller to operate overall system in optimal condition with the microcomputer unit installed inthe freezer, and based on the 4 measurement values including intake refrigerant gas pressure,discharged refrigerant gas pressure, discharged refrigerant gas temperature, and heat exchangerrefrigerant temperature, it should be able to control electronic expansion valve, compressor(inverter),etc.2) There should be a function that can check all sensors connected to the freezer and various operationstatuses.3) It should be equipped with self protection equipment and system protection function.4) Module type control interface should be applied so that simple product control is possible in seriesinstallation, and relocation and re-installation of HMI controller should be possible without separatecontrol equipment.7. Ref. Piping1) Refrigerant pipe should be purity 99.9% or above Phosphorus Deoxidized Copper without joint, and itshould be piped for fluent refrigerant flow between each component.2) Install check valve at compressor discharge side to prevent reverse flow of the discharged refrigerant.3) Install strainer in the pipe to absorb moisture inside the pipe and to filter foreign objects.4) The pipe from expansion valve to evaporator should be insulated to prevent moisture condensation onthe surface of the pipe and to prevent flash gas generation of refrigerant fluid at the same time.39 Outdoor Unit _ Specification of ProductionAir-Cooled Scroll Chiller (R410A)15. Specification of Production5) Liquid injection pipe that activates electronic valve to flow fluid refrigerant to the suction pipe whendischarged gas temperature is above the rated temperature should be installed to protect compressorand freezer.6) After completing the piping, carry out the pressure endurance test on refrigerant side at 4.18 MPa orabove (designed pressure 3.8 MPa), and there should be no leakage or deformation.7) After carrying out air-tight test, completely vacuum inside so that there is absolutely no moisture.8. Safety devices1) Refrigerant pressure (Normal refrigerant pressure)A. High pressure switchB. High voltage protection (Sensor)2) TemperatureA. compressor discharge temperature overheating detection (Sensor)B. IPM temperature detection (Sensor)C. Freeze and burst protection (Sensor)D. Power Module application (Sensor)3) Chilled water flowA. Chilled water flow switch)4) Voltage and current (control logic)A. Revere phase detection and protection (Voltage monitoring system)B. Compressor over-current protectionC. Fan motor over-current protection5) Fuse40 _ Outdoor UnitAppendixAir-Cooled Scroll Chiller (R410A)16. Appendix - Antifreeze CorrectionsAntifreeze Corrections1.405 1.273 1.174 1.098 1.040Pressure Drop0.935 0.948 0.96 0.973 0.986 Heating0.968 0.974 0.98 0.987 0.993 CoolingPropylene glycol1.263 1.188 1.124 1.068 1.024 Pressure Drop0.961 0.969 0.997 0.985 0.993 Heating0.979 0.983 0.987 0.991 0.996 CoolingEthylene glycol1.1601.122 1.091 1.057 1.023 Pressure Drop0.974 0.979 0.985 0.99 0.995 Heating0.992 0.993 0.995 0.997 0.998 CoolingMethanol50% 40% 30% 20% 10%Antifreeze % by wtItem Antifreeze TypeCorrection FactorAntifreeze % by wt0% 10% 20% 30% 40% 50%1,0000.9900.9800.9700.9600.9500.9400.930MethanolEthylene glycolPrlpylene glycolCorrection factor of cooling capacity41 Outdoor Unit _ IntroductionAir-Cooled Scroll Chiller (R410A)Appendix16. Appendix - Antifreeze CorrectionsSMMMSSub-coolerAccum-ulatorHeatexchangeron air sideOutdoor AirHeatexchangeron air sideCoolingFan motorPressure sensorPressure switchSolenoid valveCheck valveStrainerElectronicexpansion valveExpansion valveTemperature sensorPlate typeheatexchangerWater outletWater inletStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorn20RT42 _ Outdoor UnitAppendixAir-Cooled Scroll Chiller (R410A)16. Appendix - Antifreeze CorrectionsMSCoolingFan motorPressure sensorPressure switchSolenoid valveCheck valveStrainerElectronicexpansion valveExpansion valveTemperature sensorSMMSub-coolerAccum-ulatorHeatexchangeron air sideHeatexchangeron air sidePlate typeheatexchangerWater outletWater inletSMMAccum-ulatorHeatexchangeron air sideHeatexchangeron air sidePlate typeheatexchangerWater outletWater inletSub-coolerOutdoor AirOutdoor AirStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorn40RT43 Outdoor Unit _ IntroductionAir-Cooled Scroll Chiller (R410A)Appendix16. Appendix - Antifreeze CorrectionsMSCoolingFan motorPressure sensorPressure switchSolenoid valveCheck valveStrainerElectronicexpansion valveExpansion valveTemperature sensorSMMAccum-ulatorHeatexchangeron air sideHeatexchangeron air sidePlate typeheatexchangerWater outletWater inletSMMAccum-ulatorHeatexchangeron air sideHeatexchangeron air sidePlate typeheatexchangerWater outletWater inletSMMAccum-ulatorHeatexchangeron air sideHeatexchangeron air sidePlate typeheatexchangerWater outletWater inletSub-coolerSub-coolerSub-coolerOutdoor AirOutdoor AirOutdoor AirStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorStatic speedcompressorStatic speedcompressorOil separatorOil separatorOil separatorInvertercompressorn60RT44 _ Outdoor UnitIntroductionAir-Cooled Scroll Chiller (R410A)MemoMemoP/No.: MFL67285204