Carrier 50HE003-006, 50HJ004 Low Charge Cooling, Cooling Charging Chart Standard 50HJ005

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Low Charge Cooling

Using Cooling Charging Charts, Fig. 58-61, vary refrigerant until the conditions of the charts are met. Note the charging charts are different from type normally used. Charts are based on charging the units to the correct superheat for the various operating conditions. Accurate pressure gage and temperature sensing device are required. Connect the pressure gauge to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor-air cfm must be within the normal operating range of the unit. An accurate superheat, thermocouple-type or thermistor-type thermometer, and a gauge manifold are required when using the superheat charging method for evaluating the unit charge. Do not use mercury or small dial-type thermometers because they are not adequate for this type of measurement.

50HE,HJ

C06139

Fig. 58 ---Cooling Charging Chart,

Standard 50HJ004

Humidi-Mizer™System Charging

The system charge for units with the Humidi-MiZer adaptive dehumidification system is greater than that of the standard unit alone. The charge for units with this option is indicated on the unit nameplate drawing. Also refer to Fig. 62-65. To charge systems using the Humidi-MiZer adaptive dehumidification system, fully evacuate, recover, and recharge the system to the nameplate specified charge level. To check or adjust refrigerant charge on systems using the Humidi-MiZer adaptive

dehumidification system, charge per Fig. 62-65.

C06140

Fig. 59 ---Cooling Charging Chart,

Standard 50HJ005

C06141

Fig. 60 ---Cooling Charging Chart,

Standard 50HJ006

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Image 64

Contents Installation Instructions Provide Unit Support Roof Curb Alternate Unit SupportRoof Curb Details Positioning Unit Leveling Tolerances50HE 50HJ50HJ004-007 Base Unit Dimensions 50HE003-006 Base Unit Dimensions Field Power Supply Heat Anticipator SettingsField Control Wiring Make Electrical ConnectionsPhysical Data 50HJ Hi-StaticPhysical Data 50HE Base Unit 50HEPower Wiring Connections Electrical Data-50HE None YES PH---Hz Min MaxActual kW B00006 008,009 23.4 30.1 40.8 Electrical Data-50HJ KW†006 11.8 414 508 007 10.6 16.0 008 13.8 20.0 Ton 004+005 19.9 24.3 55.2 76.3 86.9 168 34.9 173 002 13.6 A00 or 007008 Humi 009 18.4 111 518 632 018 17.0 16.4 23.9 012 10 ton18.7 133 518 632 17.0 16.4 24.6 019 34.0 32.7 45.0 014 A00 or Actual kW12.5 Disconnect Switch AssemblyHumidi-MizerAdaptive Dehumidification System Manual Outdoor DamperTypical Humidi-MiZer t Adaptive Dehumidification System Install the Supply Air Temperature SAT Sensor Outdoor Air Temperature Sensor OATInstall the Indoor Air Quality CO2 Sensor Enthalpy Sensors and ControlPremierLinkSensor Usage RequiredOr Equivalent Not UsedPremierLinktController Installed Return Air Enthalphy Sensor EconoMi$er IV Component LocationsHood Box Removal Supply Air Temperature SAT Sensor Supply Air Sensor Temperature Resistance ValuesOutdoor Air Lockout Sensor Economi$er IV Control ModesEconoMi$er IV Wiring Differential Enthalphy Control Exhaust Set Point AdjustmentIndoor Air Quality IAQ Sensor Input Thermostats Minimum Position ControlDamper Movement + TR Dehumidification of Fresh Air with DCV Control Adjust Evaporator-Fan SpeedBelt Drive Motors CO2Sensor Standard Settings Belt Drive Motor MountingEvaporator-Fan Motor Data Standard Motor Evaporator-Fan Motor Data High-Static MotorsEvaporator-Fan Motor Efficiency 600 900 1200 1400 1600 1800 2000 2200 2400 2600003,004,005 006 74/84 007 External Static Pressure in. wgRpm Bhp Watts 900 566 142 690 228 879957 522 1000 598 173 718 267 903Rpm Bhp Watts 1200 666 252 778 361 873 476 956 594 1300 701 809 418 902 540 983 6651400 737 355 842 481 932 610 875 551 962 689Rpm Bhp Watts 1500 790 353 897 471 991 600 1600 828 412 931 536 1022 6701700 866 478 966 608 1800 905 551 1001 6871462 2067 1472 1761 16001495 1858 1700 1463 1766 1520 1964 18002200 1063 929 1147 1089 1224 1256 1295 1431 2300 1104 1046 1185 1212 1260 13862400 1145 1174 1223 1346 1296 1526 2500 1185 1311 1262 1490Rpm Bhp Watts 1800 907 558 1006 708 1092 860 1900 945 638 1042 7962000 984 727 1078 892 2100 1024 823 1115 9972100 1024 823 1115 997 1195 1173 1268 1350 2200 1063 929 1152 1111 1230 12942300 1103 1044 1189 1234 1266 1425 2400 1143 1168 1227 1367Rpm Bhp Watts 900 554 134 681 1000 583 163 7071100 612 195 735 919Rpm Bhp Watts 1200 643 233 762 344 1300 674 2761400 706 324 1500 738 379Rpm Bhp Watts 1500 724 295 837 402 937 524 1028 660 1600 757 343 866 455 962 580719 1700 790 398 894 514 988 643External Sttic Pressure in. wg 1474 1797 17001490 1873 1800 1508 1957 19002400 1033 970 1115 1120 1192 1279 1264 1448 2500 1069 1084 1149 1239 1223 1403 1293 1576Rpm Bhp Watts 1500 1188 970 1261 1143 1600 1208 1033 12792400 1026 945 1115 1118 1195 1295 1268 1476 2500 1061 1053 1148 1233 1226 1416 1297 16042600 1097 1169 1181 1356 1257 1546 2700 1132 1294 1214 1487 1289 1684Internal Wiring Refrigerant Service PortsUnit Preparation Return-Air FiltersSafety Relief HeatingVentilation Continuous Fan Operating Sequence Cooling Units Without EconomizerDX Cooling Temperature Control Example Routine 3 OATSubcooling Mode Humidi-MiZer Normal Design Cooling OperationCleaning Evaporator CoilCondenser Coil One-Row CoilEvaporator Fan Belt Adjustment Condenser-Fan AdjustmentFan Motor Bearings Condensate DrainCooling Charging Chart Standard 50HJ005 Low Charge CoolingCooling Charging Chart Standard 50HJ007 50HE,HJ C06145 Replacement Parts Unit TroubleshootingEconomi$er IV Troubleshooting DCV Demand Controlled Ventilation and Power ExhaustDCV Minimum and Maximum Position Economi$er IV Troubleshooting CompletionSupply-Air Input Cooling Service Analysis Subcooling Mode Liquid Reheat EconoMi$er IV Input/Output LogicEconoMi$er IV Functional View START-UP Checklist