SiUS331708EA
Field Settings from Outdoor Unit
Field Settings and Test Operation
126
2.7
Setting of Refrigerant Recovery Mode
When carrying out the refrigerant collection on site, fully open the respective electronic expansion valve of indoor
and outdoor units.
All indoor and outdoor unit’s operation are prohibited.
Operation procedure
(1) In setting mode 2 with units in stop mode, set the item 2-21 (refrigerant recovery / vacuuming mode) to ON.
The respective expansion valve of indoor and outdoor units are fully opened.
Test Operation
and
Under
Centralized Control
are displayed on the remote controller, and the indoor / outdoor unit operation is
prohibited.
After setting, do not cancel setting mode 2 until completion of refrigerant recovery operation.
(2) Collect the refrigerant using a refrigerant recovery unit. (See the instruction attached to the refrigerant
recovery unit for more detail.)
(3) Press the
MODE (BS1)
button once and return to setting mode 2.
2.8
Setting of Vacuuming Mode
In order to perform vacuuming operation on site, fully open the electronic expansion valves of indoor and outdoor
units and turn on some solenoid valves.
Operating procedure
(1) In setting mode 2 with units in stop mode, set the item 2-21 (refrigerant recovery / vacuuming mode) to ON.
The respective expansion valve of indoor and outdoor units are fully opened.
Test Operation
and
Under
Centralized Control
are displayed on the remote controller, and the indoor / outdoor unit operation is
prohibited.
After setting, do not cancel setting mode 2 until completion of Vacuuming operation.
(2) Use the vacuum pump to perform vacuuming operation.
(3) Press the
MODE (BS1)
button once and reset setting mode 2.
2.9
Final Charge Adjustment
The following operation is needed only when the most adequate refrigerant charge for the best performance is
required and the piping length between the outdoor and indoor units is less than 15 m (50 ft). Besides the
conditions above, this final adjustment is unnecessary.
Procedure
(1) While in setting mode 2, set the item 2-20 (Additional refrigerant charge operation setting) to ON. (LEDs:
kh
)
(2) While in setting mode 2, set the item 2-7 (SC adjustment) to ON. (LEDs:
kh
)
(3) Cooling operation begins; wait until the compressor achieves charge mode rotation speed.
Charge mode rotation speed achieved:
(LEDs:
kkhhhhk
)
Charge mode rotation speed not yet achieved:
(LEDs:
kkhhhhh
)
(4) Charge the refrigerant through the liquid stop valve charge port.
(5) Measure the liquid stop valve temperature. Charging is complete when the temperature reaches the target
subcooling.
Target subcooling
24 class
3.33 ± 0.56°C (6 ± 1°F)
36 class
1.11 ± 0.56°C (2 ± 1°F)
48 class
6.67 ± 0.56°C (12 ± 1°F)
60 class
7.78 ± 0.56°C (14 ± 1°F)
Summary of Contents for RXSQ24TAVJU
Page 1: ...Service Manual SiUS331708EA RXSQ24 36 48 60TAVJU Heat Pump 60 Hz...
Page 290: ...Wiring Diagrams SiUS331708EA 277 Appendix RXSQ48TAVJU 3D109546A...
Page 291: ...SiUS331708EA Wiring Diagrams Appendix 278 RXSQ60TAVJU 3D109547A...
Page 295: ...SiUS331708EA Wiring Diagrams Appendix 282 FXZQ05 07 09 12 15 18TAVJU 3D110443A...
Page 298: ...Wiring Diagrams SiUS331708EA 285 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...
Page 300: ...Wiring Diagrams SiUS331708EA 287 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU 3D110467B...
Page 301: ...SiUS331708EA Wiring Diagrams Appendix 288 FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...
Page 302: ...Wiring Diagrams SiUS331708EA 289 Appendix FXHQ12 24 36MVJU 3D048116C...
Page 303: ...SiUS331708EA Wiring Diagrams Appendix 290 FXAQ07 09 12 18 24PVJU 3D075354C...
Page 309: ...SiUS331708EA Wiring Diagrams Appendix 296 VAM1200GVJU 3D073270D...