• Pipe installation from outdoor units to HR units
: 3 pipes(Low pressure Gas pipe, High pressure Gas pipe, Liquid pipe)
• Pipe installation from HR units to indoor units
: 2 pipes(Gas pipe, Liquid pipe)
B
A
1
HR1
Outdoor
Unit
Indoor Unit Y Branch pipe
Low pressure Gas pipe
High pressure Gas pipe
Liquid pipe
Gas pipe
Liquid pipe
Head Branch pipe
Indoor
Unit
Pattern 7
Pattern 8
HR1
A
A
A
48k 48k
1 2
• * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h
• * : Maximum indoor units per a branch are 8 indoor units
HR2
48k 48k
3 4
HR3
48k 48k
5 6
*
HR1
48k 48k
1 2
HR2
*
B
12k 12k 12k 12k
3 4 5 6
24k
7
24k
8
Refrigerant piping system
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