54 Outdoor Unit
Appendix
1. Form the piping according to its routing. Avoid bend-
ing and bending back the same piping point more
than three times. (This will result in hardening the
pipe.)
2. After deforming the piping, align centers of the union
fitting of the indoor unit and the piping, and tighten
them firmly with wrenches.
3. Connect pipe to the service valve or ball valve which
is located below the outdoor unit.
4. After completing the piping connection, be sure to
check if there is gas leakage in indoor and outdoor
connection.
After completing the piping connection, execute vacuum
drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out using the ser-
vice ports of both the liquid and gas side valves.
Use two wrenches and tighten with regular torque.
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