Refrigerant Charging - LG MULTI VS AARUN040LSS5 Installation Manual

PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
42
WARNING
!
• Regulation for refrigerant leakage
: The amount of refrigerant leakage should satisfy the following equation for human safety.
Total amount of refrigerant in the system
Volume of the room at which Indoor Unit of the least capacity is installed
If the above equation can not be satisfied, then follow the following steps.
• Selection of air conditioning system : select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: Installation position should be over 2 m from the floor. (Wall mounted type → Cassette type)
• Adoption of ventilation system
: Choose ordinary ventilation system or building ventilation system.
• Limitation in piping work
: Prepare for earthquake and thermal stress.

Refrigerant charging

WARNING
!
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate properly.
• If additionally bottled refrigerant amount is over 10 %, condenser burst or insufficient
indoor unit performance may be caused.
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid pipe
Gas pipe
≤ 0.44 ( kg / m
3
)