LG MULTI V 5 ARUM160LTE5 Installation Manual page 22

22
Refrigerant pipe diameter from outdoor unit to first
branch. (A)
Standard Pipe Diameter
ODU.
Capacity
Low pressure High pressure
(hp)
Liquid Pipe
gas pipe
mm (inch)
mm (inch) mm (inch)
8 Ø 9.52 (3/8) Ø 19.05 (3/4) Ø 15.88 (5/8) Ø 12.7 (1/2) Not increased Not increased
10 Ø 9.52 (3/8) Ø 22.2 (7/8) Ø 19.05 (3/4) Ø 12.7 (1/2) Not increased Not increased
12 Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Ø 15.88 (5/8) Not increased Not increased
14~16 Ø 12.7 (1/2) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Ø 15.88 (5/8) Not increased Not increased
18~20 Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Ø 19.05 (3/4) Not increased Not increased
22 Ø 15.88 (5/8) Ø 28.58 (1-1/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Not increased Not increased
24 Ø 15.88 (5/8) Ø 34.9 (1-3/8) Ø 28.58 (1-1/8) Ø 19.05 (3/4) Not increased Not increased
26~34 Ø 19.05 (3/4) Ø 34.9 (1-3/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Not increased Not increased
36 Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 28.58 (1-1/8) Ø 22.2 (7/8) Not increased Not increased
38~60 Ø 19.05 (3/4) Ø 41.3 (1-5/8) Ø 34.9 (1-3/8) Ø 22.2 (7/8) Not increased Not increased
62~64 Ø 22.2 (7/8) Ø 44.5 (1-3/4) Ø 41.3 (1-5/8)
66~96 Ø 22.2 (7/8) Ø 53.98 (2-1/8) Ø 44.5 (1-3/4)
* If available on site, select pipe size according to upper table.
Otherwise it doesn't need to be increased
Y branch, Header and HR unit connection pattern
Pattern 1
B
HR1 HR2
1 2 3
48 k 48 k 48 k
• Impossible installation : Head branch pipe
Pattern 2
HR1
B
1
2 3 4 5
7 k 7 k 7 k 7 k 7 k
• Impossible installation : HR unit
pipe Y and Head branch pipe.
Pipe diameter when pipe length is ≥
90 m (295 ft) or when height differential
(ODU÷IDU) is > 50 m (164 ft)
Low pressure High pressure
Liquid Pipe
gas pipe gas pipe gas pipe
mm (inch)
mm (inch) mm (inch)
Ø 25.4 (1) Not increased Not increased
Ø 25.4 (1) Not increased Not increased
4
48 k
HR unit
A
6 7
24 k 24 k
Head branch
Pattern 3
HR1
1 2
48 k 48 k 48 k
• The maximum total capacity of indoor
units is 56.4kW(192 kBtu/h).
Pattern 4
HR1
B
1 2
12 k 12 k 12 k
• The maximum total capacity of a branch
pipe of HR unit is 14.1kW(48 kBtu/h).
Pattern 5
A
HR1
1 2
48 k 48 k
Pattern 6
HR1
A
A
B
1 2 3
24 k 24 k
12 k
3 4
48 k
3 4
12 k
HR2
3 4
48 k 48 k
A
4 5
24 k
12 k