LG ARUN80LN3 Installation Manual page 43

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
1. Installation of effective opening part
2. Reconfirmation of Outdoor Unit capacity and piping length
3. Reduction of the amount of refrigerant
4. Installation of 2 or more security device (alarm for gas leakage)
- Change Indoor Unit type
: installation position should be over 2m 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 Bottling
Liquid pipe
Gas pipe
Common pipe
- Add exact amount of refrigerant calculated by the installation pipe diameter length and the indoor combination.
- If the refrigerant amount is not exact, it may not operate properly.
- If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit performance may be caused.
WARNING
- Pipe to be vacuumed : gas pipe, water pipe, common pipe
- If the refrigerant amount is not exact, it may not operate properly.
- If additionally bottled refrigerant amount is over ±10%, condenser burning or insufficient indoor unit per-
formance may be caused.
Pipe connections between indoor and outdoor unit
Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
≤ 0.44 ( kg / m
)
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Installation Manual 43