LG ARUM080LTE5, Engineering Product Data Book

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7. Refrigerant piping system
17
Multi V 5
Installation of Outdoor Units
■
Y branch, Header and HR unit connection pattern
Note
• If the large capacity(76kBtu/h and 96kBtu/h unit) indoor units are installed, two neighboring outlets of one HR
unit are linked by Y branch pipe and connected to one indoor unit.
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
54k 54k 54k 54k
1 2 3 4
• The maximum total capacity of indoor
units is 67.4kW(230 kBtu/h).
Pattern 4
15k 15k 15k 15k
1 2 3 4
• The maximum total capacity of a branch
pipe of HR unit is 17.5kW(60 kBtu/h).
HR1
B
Pattern 5
HR1
48k 48k
A
1 2
HR2
48k 48k
3 4
HR1
’ [ Y ’ [ Y ’ [ Y
XY’ XY’
B
Pattern 6
A
A
A
1 2 3 4 5