20
18-BC89D1-1D-EN
Start Up
1. Ensure you have completed the following sections. ”Refrigerant Line Brazing,” p. 12 through ”Electrical — High Voltage,” p. 18
2. Set System Thermostat to OFF.
3. Turn on disconnect(s) to apply power to the indoor and outdoor
units.
4. Wait 3 hours before starting the unit if the outdoor ambient
temperature is below 85° F.
5. Run the system using the “Charging Mode-Cooling” test mode
found in the 850/950 comfort control. This is the only approved
method for setting the system charge level by subcooling.
Follow the on-screen prompts.
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