LG AS-W0964DH0/GH0 Service Manual page 10

Piping Length and Elevation
Capacity
(Btu/h)
GAS
7k, 8k, 9k 3/8"
3/8"
11k, 12k, 14k
1/2"
1/2"
18k, 24k, 26k 5/8"
5/8"
Indoor unit
A
B
Capacity is based on standard length and maximum allowance length is on the basis of reliability.
Oil trap should be installed every 5~7 meters.
Pipe Size
LIQUID
1/4"
1/4"
1/4"
1/4"
1/4"
3/8"
Indoor unit
Outdoor unit
Standard
Max.
Elevation B (m)
Length (m)
4 or 7.5 7
4 or 7.5 7
4 or 7.5 7
4 or 7.5 15
4 or 7.5 15
4 or 7.5 15
Outdoor unit
A
Indoor unit
B
Additional Refrigerant
Max.
Length A (m)
15
15
15
30
30
30
Outdoor unit
A
Oil trap
B
If the piping length is more
10 Meters and the outdoor
Service Manual 15
Installation
(g/m)
20
20
20
20
20
30