LG Multi V CRUN Serie Montageanleitung Seite 20

Refrigerant piping installation
9. Always use good-quality materials for brazing.
10. The Multi V Series will stop due to an abnormality like excessive or insufficient refrigerant. At such a time,
always properly charge the refrigerant to the system. When servicing, always check the notes concerning
pipe length and amount of additional refrigerant at both locations.
11. Never perform a pump down. This will not only damage the compressor but also deteriorate the per-
formance.
12. Never use refrigerant to perform an air purge. Always evacuate using a vacuum pump.
13. Always insulate the piping properly. Insufficient insulation will result in a decline in heating/cooling perfor-
mance, water drops from condensation and other such problems.
14. When connecting the refrigerant piping, make sure the service valves of the outdoor unit is completely
closed (the factory setting) and do not operate it until the refrigerant piping for the outdoor and indoor units
has been connected, a refrigerant leakage test has been performed and the evacuation process has been
completed.
15. Always use a non-oxidizing brazing material for brazing the parts. If a non-oxidizing brazing material is not
used, it could cause clogging or damage to the compressor unit.
16. Charge Nitrogen gas for pipe not to be oxidized during brazing.
17. Connect a strainer (Filter/Drier) to liquid pipe outside of service port
- strainer (Filter/Drier): DANFOSS product.
18. When recharging refrigerant, the drier in outdoor unit should be replaced.
WARNING
When installing and moving the air conditioner to another site, be sure to make refrigerant recharged
after perfect evacuation.
- If a different refrigerant or air is mixed with the original refrigerant, the refrigerant cycle may malfunction and
the unit may be damaged.
CAUTION
When connecting the piping from outdoor unit(CRUN1008T0), the pipe withdraw hole of front panel
should be cut, the cutout section is so sharp that it may cause an wound on finger.
- The cut section should be eliminated and smooth.
20 Outdoor Unit
: Cut section