System Charge Adjustment - Trane ComfortLink II 4TWV8X24A1000A Installer's Manual

System Charge Adjustment

Table 29. Temperature Measurements
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.
For best results the indoor temperature should be kept between 70° F
to 80° F.
Table 30. Subcooling Charging Corrections
Determine the final subcooling value using total Line Length and Lift
measured in "Required Refrigerant Line Length" and the "Subcooling
Charging Corrections Charts."
Note: The only mode approved for setting or validating system charge is using Charging Mode-Cooling. Charging Mode-Cooling is a variable
speed test mode found in the 850/950/1050 and UX360 comfort control Technician Menu's. Test modes can also be accessed using the
Diagnostic Mobile App on Link systems. Outdoor Temperature must be between 55°F and 120°F with Indoor Temperature kept between
70°F and 80°F.
Important: VARIABLE SPEED OUTDOOR UNITS REQUIRE THE INDOOR UNIT BE CONFIGURED FOR 400 CFM/TON IN clii MODE.
22
120° F
55° F
80° F
70° F
Subcooling Charging Correction Worksheet
Total Line Length (ft) ________________________
Total Vertical Charge (lift) ________________________
(Values from — Required Refrigerant Line Length)
Design Subcooling Value ________________________
(from nameplate or Service Facts)
Final Subcooling Value ________________________
18-BC106D1-1C-EN