Refrigerant Charging; Distribution Method - LG ARUN BTE4 Series Installation Manual

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 follow-
ing 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 2m from the floor (Wall
mounted type ' Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation sys-
tem
• Limitation in piping work
: Prepare for earthquake and thermal stress

Refrigerant charging

Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
Liquid pipe
Gas pipe
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.

Distribution Method

Horizontal Distribution
Slave
≤0.44 (kg / m
3
)
1st
Slave
1st
1st
Main pipe
Distribution
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
Slave
The others
Slave
Slave
Master
2nd
Master
2nd
3rd
3rd
Main pipe
Distribution
Slave
Master
Master
Master
Master
Header
15
Slave
3rd main pipe distribution
Master
2nd
1st 3rd