3Opening the valves
Procedure 3
Open both the liquid and gas valves. (In a system with multiple outdoor units, open the liquid and gas valves on ALL outdoor units.
All the outdoor units will operate during refrigerant oil recovery operation.)
* Use a hexagonal wrench to open the valves. Refer to the table below for the proper wrench size.
4Connecting the refrigerant cylinder(s)
Procedure 4
If the required amount of refrigerant is not charged, disconnect the charging hose connected to the refrigerant cylinder from the
service port on liquid or gas side, and connect the charging hose to the refrigerant charge port CJ3 (only for automatic charging).
* In a system with multiple outdoor units, connect a cylinder to each outdoor unit.
Check that each cylinder has the correct amount of refrigerant.
* If the amount of refrigerant is insufficient, the units may stop during refrigerant oil recovery or it may take longer than usual to complete a test
run.
5Setting the unit address and checking for proper system operation
Procedure 5
Set the unit address, turn on the power, and check for proper operation of the system.
* If an attempt is made to operate the outdoor unit before the refrigerant oil recovery operation is complete, an error code 7116 will appear on the
remote controller. This does not indicate a malfunction. Wait for the oil recovery operation to be completed. The error code 7116 will go off upon
completion of oil recovery operation.
Liquid valve
Refrigerant charge port (CJ3)
5
Hexagonal wrench size
Liquid
5, 6, 8 HP
4 mm
10, 12, 14 HP
4 mm
Gas valve
A
Gas
6 mm
10 mm
A