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

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

64