LG Multi V 5 ARUM080LTE5, Installation Manual

Page: 23 / 55

23
ENGLISH
Pattern 7
Pattern 8
HR1
A
A
A
48 k 48 k
1 2
• * : Serial connection of HR units : Capacity sum of indoor units ≤ 56.4 kW (192 kBtu/h)
• * : Maximum indoor units per a branch are 8 indoor units
HR2
48 k 48 k
3 4
HR3
48 k 48 k
5 6
*
HR1
48 k 48 k
1 2
HR2
*
B
12 k 12 k 12 k 12 k
3 4 5 6
24 k
7
24 k
8
• 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
Keep the 40 m (131 ft) distance from the first branch to the farthest
indoor.
5 m(16 ft)
15 m(49 ft)
1) under 40 m (131 ft)
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
1) under 40 m (131 ft)
Y branch
Keep the sum of indoor capacity under 56.4 kW(192 kBtu/h).
Pipe Connection Method between outdoor
unit/indoor unit
h
See Table 2
A : Refrigerant pipe diameter from outdoor unit to first branch
E : Refrigerant pipe diameter for outdoor unit capacity
(Slave 1+ Slave 2+ Slave 3)
F : Refrigerant pipe diameter for outdoor unit capacity
(Slave 2+ Slave 3)
G : Refrigerant pipe diameter for outdoor unit capacity(Slave 3)
L1
L2
L3
H1
E G F
Slave3
Slave2
Slave1
Master
l
40 m (131 ft)
h 40 m (131 ft)
Indoor
Unit
1st branch
Refrigerant pipe diameter from outdoor unit to first branch
Level Difference
(Outdoor unit
÷
Outdoor unit)
5 m [16.4 ft]
Max length from first branch to
each outdoor unit (L1, L2, L3)
Less than 10 m [32.8 ft]
(equivalent length of piping 13 m
[42.7 ft])
h
* : See Table 4
WARNING
Increased Pipe Diameter(table 2)
- When pipe length is 90 m [295 ft] or more from ODU to 1st
branch
- When level difference is 50 m [164 ft] or more
!
Y branch
Method
Combination of Y
branch/header
Method
Header
Method
Max pipe
length
Outdoor Unit
÷
Indoor Unit
Longest
pipe
length(L)
A+B+C+D+e
≤
150 m
[492 ft]
(200 m [656 ft] :
Conditional application)*
A+B+b
≤
150 m [492 ft]
A+C+e
≤
150 m [492 ft]
(200 m [656 ft] :
Conditional application)*
A+f
≤
200 m
[656 ft]
Equivalent
pipe length
175 m [574 ft]
(225 m [738 ft] :
Conditional application)*
175 m [574 ft]
(225 m [738 ft] :
Conditional application)*
225 m
[738 ft]
Total pipe
length
1000 m [3281 ft] 1000 m [3281 ft]
1000 m
[3281 ft]
Max
difference
in height
Outdoor Unit
÷
Indoor Unit
Difference in
height(H)
110 m [361 ft] 110 m [361 ft] 110 m [361 ft]
Indoor Unit
÷
Indoor Unit
Difference in
height(h)
40 m [131 ft] 40 m [131 ft] 40 m [131 ft]
Longest pipe
length after
1st branch
Pipe
length(l)
40 m [131 ft]
(90 m [295 ft] :
Conditional application)*
40 m [131 ft]
(90 m [295 ft] :
Conditional application)*
40 m [131 ft]
(Table 1) Limit Pipe length
For Heat Pump And Heat Recovery System Installation