System Charge Adjustment - Trane 4TTL6018A1000A Installation And Operation Manual

System Charge Adjustment

Table 24. Temperature Measurements (Systems can be rated with TXV, EEV or Piston. Ensure charging method is
correct).
Check the outdoor temperatures.
Subcooling using "Charging Mode-Cooling" is the only
recommended method of charging between 55 ° F and 120° F ambient
outdoor temperature.
Note: For Superheat (In Cooling Mode), refer to the Superheat
Charging Table
For best results the indoor temperature should be kept between 70° F
to 80° F.
Table 25. Subcooling Charging Corrections
Determine the final subcooling value using total Line Length and Lift —
See Required Refrigerant Line Length and the Subcooling Charging
Corrections Charts.
Subcooling Charging Correction Worksheet
Total Line Length (ft) ________________________
Total Vertical Charge (lift) ________________________
(Values from — Required Refrigerant Line Length)
Design Subcooling Value ________________________
(from nameplate)
Final Subcooling Value ________________________
20
120° F
55° F
80° F
70° F
18-BC98D1-1G-EN