LG ATNH126ELFB, Service Manual

Page: 92 / 151

96 Universal System Air Conditioner
MPS Variable SINGLE A
8.3 Piping length and the elevation
• 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.
CAUTION
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit
B
Gas Liquid Standard Max. Standard Max.
Capacity
12k Btu/h
3/8"
(9.52mm)
1/4"
(6.35mm)
7.5 15 5 5 20
18k Btu/h
1/2"
(12.7mm)
1/4"
(6.35mm)
7.5 50 5 30 35
24k Btu/h
1/2"
(12.7mm)
1/4"
(6.35mm)
7.5 50 5 30 35
36k Btu/h
5/8"
(15.88mm)
1/4"
(6.35mm)
7.5 50 5 30 40
48k Btu/h
3/4"
(19.05mm)
3/8"
(9.52mm)
7.5 50 5 30
75
(Chargeless 30m)
60k Btu/h
3/4"
(19.05mm)
3/8"
(9.52mm)
7.5 50 5 30
80
(Chargeless 30m)
30k Btu/h
❈
Extra refrigerant = (Extended length - Rated length) x Additional refrigerant.
5/8"
(15.88mm)
1/4"
(6.35mm)
7.5 50 5 30 35
Pipe Size
Length (m) Elevation (m)
*Additional
(Diameter:Ø)
refrigerant(g/m)
8.4 Refrigerant Additional Charging Method
(Except: AUUH126B / 186B / 246B / 306B / 368B)
There is not additional charging of refrigerant by main pipe of 30m below.
For additional charging method, see below table.
* Example(AUUH608B)
*(L1=Main Pipe)
Single Refrigerant=(L1-30)*0.08