Installation - LG LM50 2004-E1 Product Data

14. Installation

14.1 Piping Length & Refrigerant Charge
The maximun allowable level and piping length
[Outdoor Unit]
7.5m
Model Standard Length
[Outdoor Unit]
A2UC/H146FA0
A2UC/H186FA0
A3UC/H216FA0
A4UC/H306FA0
Refrigerant Charge
Indoor Unit Capacity
(Btu/h)
7k, 9k, 12k 3/8"(9.52mm) 1/4"(6.35mm)
18k, 24k 1/2"(12.7mm) 1/4"(6.35mm)
❋ Extra refrigerant = (Extended length - Rated length) x Additional refrigerant
Max piping length each indoor unit
A, B, C, D A
7.5m 15m
7.5m 15m
7.5m 15m
7.5m 15m
Pipe Size
Gas Liquid
It does not matter which unit is higher.
Indoor Unit
A
B
C
D
B C
15m -
15m -
15m 15m
15m 15m
Rated Max Additional
Length Length Refrigerant
7.5m 15m 30g/m
7.5m 15m 30g/m
7.5m
Max total
piping length
D
- 30m(A+B)
- 30m(A+B)
- 45m(A+B+C)
15m 60m(A+B+C+D)
2004 Product Data 69