Section 13. Start Up; Section 14. System Charge Adjustment - Trane 5TWR5 Installation And Operation Manual

Section 13. Start Up

13.1 System Start Up
STEP 1 - Ensure Sections 7 through 12 have been completed.
STEP 2 - Set System Thermostat to OFF.
STEP 3 - Turn on disconnect(s) to apply power to the indoor and outdoor units.
STEP 4 - Wait one (1) hour before starting the unit if compressor crankcase heater accessory is used and the
Outdoor Ambient is below 70ºF.
STEP 5 - Set system thermostat to ON.

Section 14. System Charge Adjustment

14.1 Temperature Measurements
STEP 1 - Check the outdoor temperatures.
Subcooling (in cooling mode) is the only
recommended method of charging above 55º F
ambient outdoor temperature. See Section 14.2.
For outdoor temperatures below 55º F, see
Section 14.4.
Note: It is important to return in the spring or
summer to accurately charge the system in the
cooling mode when outdoor ambient
temperature is above 55º F.
For best results the indoor temperature should
be kept between 70º F to 80º F.
14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.)
STEP 1 - Use the refrigerant line total length
and lift measurements from Section 5.3.
Total Line Length = __________ Ft.
Vertical Change (Lift) = __________ Ft.
14
See Section 14.2 for
Outdoor
Temperatures
Above 55º F
See Section 14.4 for
Outdoor
Temperatures
Below 55º F
120º F
55º F
Outdoor Temp 1
55º F
Outdoor Temp 2
80º F
70º F
Indoor Temp
LIFT
18-BC118D1-1A-EN