
Installation
Si39-303
36
General Information
3.2.7
Additional Charge of Refrigerant at installation time
!
Operational steps
Important points
1. The results of all calculations must be recorded. (Make a list.)
2. The refrigerant will need to be additionally charged whenever the distance between the outdoor unit and
the most distant indoor unit is more than 10m.
3. The additional charging operation should be carried out by input of liquid from Service port at liquid stop
valve following completion of the vacuum drying operation.
4. When the additional charging operation cannot be satisfactorily completed use the action of the
compressor to complete the additional charging during the test run.
Refrigerant
Charging
Instructions
HFC401A are Quasi-azeotropic* refrigerants. Therefore, these refrigerants must be charged in the liquid
state. When charging the refrigerant into equipment from the refrigerant cylinder, turn the refrigerant
cylinder upside down.
Important: Make sure that the refrigerant (liquid) is taken out from the bottom part of the refrigerant cylinder.
Do not take out the refrigerant (gas) at the upper part of the refrigerant cylinder for charging.
Caution
Since some refrigerant cylinders differ in the internal mechanism, it is necessary to examine the cylinder
carefully. (Some cylinders have a siphon tube to eliminate the need for turning it upside down.)
Siphon tube
Use the length of the piping to
calculate the amount of
refrigerant required
Additional charge of
refrigerant
(V0995)
Содержание VRV II Series
Страница 6: ...Si39 303 iv Table of Contents...
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Страница 130: ...Appendix Si39 303 124 General Information BHFP22M135 Refer P 120 for Table 7 8 and 9 After connection piping...
Страница 140: ...Appendix Si39 303 134 General Information 7 10 Piping System Diagrams 7 10 1 Outdoor Unit RXYQ5MY1B...
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Страница 142: ...Appendix Si39 303 136 General Information RXYQ14MY1B RXYQ16MY1B 4D040339A...
Страница 144: ...Appendix Si39 303 138 General Information 7 11 Wiring Diagrams 7 11 1 Outdoor Unit RXYQ5MY1B...
Страница 145: ...Si39 303 Appendix General Information 139 RXYQ8MY1B RXYQ10MY1B RXYQ12MY1B 3D038582...
Страница 146: ...Appendix Si39 303 140 General Information RXYQ14MY1B RXYQ16MY1B 3D038058...
Страница 147: ...Si39 303 Appendix General Information 141 7 11 2 Field Wiring RXYQ5 16MY1B 3D040746...
Страница 148: ...Appendix Si39 303 142 General Information RXYQ18 32MY1B 3D040747...
Страница 149: ...Si39 303 Appendix General Information 143 RXYQ34 48MY1B 3D040748...
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Страница 180: ...Refrigerant Piping Si39 303 174 Installation Manual...
Страница 226: ...Troubleshooting Si39 303 220 Operation Manual...