LG MULTI V S ARUB060GSS4 Installation Manual page 15

Y branch, Header and HR unit connection pattern
Pattern 1
B
HR1
1 2 3
14.5 kW 14.5 kW 14.5 kW
(48 kBtu/h) (48 kBtu/h) (48 kBtu/h)
• Impossible installation : Head branch pipe → HR unit
Pattern 2
HR1
B
1 2 3 4
2.1 kW 2.1 kW 2.1 kW 2.1 kW
(7 kBtu/h) (7 kBtu/h) (7 kBtu/h) (7 kBtu/h)
• Impossible installation : HR unit → Head branch
pipe → Y and Head branch pipe.
Pattern 3
HR1
1 2
14.5 kW 14.5 kW 14.5 kW
(48 kBtu/h) (48 kBtu/h) (48 kBtu/h)
• The maximum total capacity of indoor
units is 58 kW(192 kBtu/h).
Pattern 4
HR1
B
1 2 3
3.63 kW 3.63 kW 3.63 kW
(12 kBtu/h) (12 kBtu/h) (12 kBtu/h)
• The maximum total capacity of a branch
pipe of HR unit is 14.5 kW(48 kBtu/h).
HR2
4
14.5 kW
(48 kBtu/h)
A
5 6 7
2.1 kW 7.25 kW 7.25 kW
(7 kBtu/h) (24 kBtu/h) (24 kBtu/h)
3 4
14.5 kW
(48 kBtu/h)
4
3.63 kW
(12 kBtu/h)
Pattern 5
A
HR1
1
14.5 kW
(48 kBtu/h)
Pattern 6
HR1
A
B
1 2
7.25 kW 7.25 kW 3.63 kW
(24 kBtu/h) (24 kBtu/h) (12 kBtu/h)
Pattern 7
A
HR1
1 2
14.5 kW 14.5 kW
(48 kBtu/h) (48 kBtu/h)
• * : Serial connection of HR units : Capacity sum of indoor units ≤ 192 kBtu/h
Pattern 8
A
HR1
1 2
3
14.5 kW 14.5 kW
3.63 kW
(48 kBtu/h) (48 kBtu/h)
(12 kBtu/h)
• * : Maximum indoor units per a branch are 8 indoor units
Indoor Unit Y Branch pipe
1
A
Low pressure Gas pipe
Outdoor
High pressure Gas pipe
Unit
Liquid pipe
• 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)
15
HR2
2 3 4
14.5 kW 14.5 kW 14.5 kW
(48 kBtu/h) (48 kBtu/h) (48 kBtu/h)
A
A
3 4 5
3.63 kW 7.25 kW
(12 kBtu/h) (24 kBtu/h)
*
HR2 HR3
3 4 5 6
14.5 kW 14.5 kW 14.5 kW 14.5 kW
(48 kBtu/h) (48 kBtu/h) (48 kBtu/h) (48 kBtu/h)
*
HR2
A
B
4 5 6 7 8
3.63 kW 3.63 kW 3.63 kW 7.25 kW 7.25 kW
(12 kBtu/h) (12 kBtu/h) (12 kBtu/h) (24 kBtu/h) (24 kBtu/h)
Head Branch pipe
B
Gas pipe
Indoor
HR1
Unit
Liquid pipe