LG ARUB120LTE4, Installation Manual

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16
ENGLISH
Refrigerant pipe diameter from outdoor unit to first
branch. (A)
Y branch, Header and HR unit connection pattern
Upward
outdoor
unit total
capacity
Pipe diameter
Pipe diameter when pipe length is
90m over to 1st branch
HP
Liquid
mm(inch)
Low pres-
sure gas
pipe
mm(inch)
High pres-
sure gas
pipe
mm(inch)
Liquid
mm(inch)
Low pres-
sure gas
pipe
mm(inch)
High pres-
sure gas
pipe
mm(inch)
8
9.52(3/8)
19.05(3/4) 15.88(5/8)
12.7(1/2)
22.2(7/8) 19.05(3/4)
10 22.2(7/8)
19.05(3/4)
25.4(1)
22.2(7/8)
12
12.7(1/2)
28.58(1-1/8)
15.88(5/8)
31.8(1-1/4)
14
22.2(7/8) 25.4(1)
16
18
15.88(5/8) 19.05(3/4)
20
22
34.9(1-3/8)
28.58(1-1/8)
38.1(1-1/2)
31.8(1-1/4)
24
26
19.05(3/4) 22.2(7/8)
28
30
32
34
36
41.3(1-5/8) 44.5(1-3/4)
38
40
42
34.9(1-3/8) 38.1(1-1/2)
44
46
48
50
52
54
56
58
60
62
22.2(7/8)
44.5(1-3/4) 41.3(1-5/8)
25.4(1) 53.98(2-1/8)
44.5(1-3/4)
64
66
53.98(2-1/8) 44.5(1-3/4) 53.98(2-1/8)
68
70
72
74
76
78
80
* If available on site, it use this size. Otherwise it can't be increased.
Pattern 1
HR1
48k 48k
1 2
HR2
48k 48k
3 4
B
• Impossible installation : Head branch pipe HR unit
Pattern 2
HR1
1 2 3 4 5 6 7
7k 7k 7k 7k 7k 24k 24k
• Impossible installation : HR unit Head branch
pipe Y and Head branch pipe.
B
A
Pattern 3
HR1
48k 48k 48k 48k
1 2 3 4
• The maximum total capacity of indoor
units is 56.4kW(192 kBtu/h).
Pattern 4
12k 12k 12k 12k
1 2 3 4
• The maximum total capacity of a branch
pipe of HR unit is 14.1kW(48 kBtu/h).
HR1
B
Pattern 5
HR1
48k 48k
A
1 2
HR2
48k 48k
3 4
HR1
24k 24k 24k
12k 12k
B
Pattern 6
A
A
A
1 2 3 4 5