LG MULTI V WATER IV ARWV100DAL4 Installation Manual page 23

Ú Refrigerant pipe diameter from branch to branch (B,C,D)
Ú Total pipe length limited
Classification Section
Maximum
Outdoor unit
permitted
÷ indoor unit
length
Outdoor unit
÷ indoor unit
Permitted
height
Indoor unit
÷ indoor unit
Maximum pipe
length after
1st branch
WARNING
• It is recommended that difference of piping length for pipes connected to the Indoor Unit is
minimized. Performance difference between Indoor Units may occur.
• When the any one (or both) of below conditions are satisfied, the diameter of main pipe (A)
must be increased according to below table.
- The equivalent length between outdoor unit and the farthest indoor unit is 90m or more
(Liquid and Gas pipes are increased)
Type Y branch
A+B+C+D+e
Maximum pipe
≤ 150 m
length(L)
(Conditionally 200 m)*
Corresponding 175 m
pipe length (Conditionally 225 m)*
Total pipe length
300 m
(Outdoor unit ÷
(Conditionally 500 m)*
total indoor unit)
height
50 m
difference(H)
height
40 m
difference(h)
Actual pipe 40 m
length( )
(Conditionally 90m)*
Refrigerant piping system
Y/header branch Header branch
A+B+b ≤ 150 m
A+f ≤ 150 m
A+C+e ≤ 150 m
(Conditionally 200m)*
175 m
(Conditionally 225 m)*
300 m
(Conditionally 500 m)* (Conditionally 500 m)*
50 m
40 m
40 m
(Conditionally 90m)*
Installation Manual 23
175 m
300 m
50 m
40 m
40 m