LG AVNH-EL Service Manual page 95

8.3 Piping length and the elevation
Pipe Size
Capacity (Diameter:Ø)
Gas
3/8"
12k Btu/h
(9.52mm)
1/2"
18k Btu/h
(12.7mm)
1/2"
24k Btu/h
(12.7mm)
5/8"
30k Btu/h
(15.88mm)
5/8"
36k Btu/h
(15.88mm)
3/4"
48k Btu/h
(19.05mm)
3/4"
60k Btu/h
(19.05mm)
❈ Extra refrigerant = (Extended length - Rated length) x Additional refrigerant.
Indoor unit
A
B
CAUTION
• Capacity is based on standard length and maximum allowance length is on the basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
• Oil trap should be installed every 10 meters.
8.4 Refrigerant Additional Charging Method
(Except: AUUH126C / 186C / 246C / 306C / 368C)
There is not additional charging of refrigerant by main pipe of 30m below.
For additional charging method, see below table.
* Example(AUUH608C)
Single Refrigerant=(L1-30)*0.08
*(L1=Main Pipe)
Length
Liquid Standard
1/4"
7.5
(6.35mm)
1/4"
7.5
(6.35mm)
1/4"
7.5
(6.35mm)
1/4"
7.5
(6.35mm)
1/4"
7.5
(6.35mm)
3/8"
7.5
(9.52mm)
3/8"
7.5
(9.52mm)
Outdoor unit
Indoor unit
(m) Elevation
Max. Standard
15 5
50 5
50 5
50 5
50 5
50 5
50 5
Outdoor unit
A
B
Indoor unit
MPS Variable SINGLE A
(m)
*Additional
refrigerant(g/m)
Max.
5 20
30 35
30 35
30 35
30 40
75
30
(Chargeless 30m)
80
30
(Chargeless 30m)
Outdoor unit
A
Oil trap
B
Service Manual 99