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506120−01 03/10
Figure 31. Typical XC13 Unit Wiring Diagram
Servicing Outdoor Unit Delivered Void of
Charge
If the outdoor unit is void of refrigerant, clean the system
using the procedure described below.
1. Use nitrogen to pressurize the system and check for
leaks as described in
Testing for Leaks
on page 15.
2. Repair all leaks.
3. Evacuate the system to remove as much of the
moisture as possible as described in
Evacuating the
System
on page 16.
4. Use nitrogen to break the vacuum and install a new
filter drier in the system.
5. Evacuate the system again. Then, weigh the
appropriate amount of HFC−410A refrigerant as listed
on unit nameplate into the system using
Charging
System
on page .
6. Monitor the system to determine the amount of
moisture remaining in the oil. It may be necessary to
replace the filter drier several times to achieve the
required dryness level.
If system dryness is not
verified, the compressor will fail in the future.
