4. Refrigerant Piping Work ............................................................................................................................. 543

4.1 Piping Materials ................................................................................................................................ 543

4.2 Flaring and Joint ................................................................................................................................ 544

4.3 Caution about Outdoor Unit Installation ............................................................................................. 545

4.4 Piping Connection .............................................................................................................................. 547

Stop Valve ............................................................................................................................... 548

4.4.1

Piping Connection ................................................................................................................... 549

4.4.2

5. Electrical Wiring ......................................................................................................................................... 551

5.1 General Check ................................................................................................................................. 551

5.2 Electrical Data ................................................................................................................................... 552

5.3 Electrical Wiring Connection ............................................................................................................ 553

5.4 Dip Switch Setting of Outdoor Unit .................................................................................................. 556

6. Additional Refrigerant Charge ................................................................................................................... 559

6.1 Air-Tight Test ..................................................................................................................................... 559

6.2 Vacuuming ...................................................................................................................................... 560

6.3 Charging Work .................................................................................................................................. 561

7. Test Run .................................................................................................................................................... 563

7.1 Before Test Run ................................................................................................................................ 563

7.2 Test Run ............................................................................................................................................ 564

- CONTENTS -

Table of Contents