LG ARUN080LTE4, Installation Manual

Page: 12 / 33

12
ENGLISH
Y branch method
Combination of Y
branch/header Method
Header Method
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch (Y branch)
Ⓒ
: Indoor Units
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch (Y branch)
Ⓒ
: Y branch
Ⓓ
: Indoor Unit
Ⓔ
: Header
Ⓕ
: Sealed piping
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch
Ⓒ
: Indoor Units
Ⓓ
: Sealed piping
Ⓔ
: Header
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch (Y branch)
Ⓒ
: Indoor Units
Ⓓ
: Downward Indoor Unit
Ⓔ
: Connection branch
pipe between Outdoor
units: ARCNN41
Ⓕ
: Connection branch
pipe between Outdoor
units : ARCNN31
Ⓖ
: Connection branch
pipe between Outdoor
units : ARCNN21
l 40m (90 m : Conditional application)*
h 40m
H 110m
L150m (200 m : Conditional application)*
Indoor
Unit
l
40m (90 m : Conditional application)*
h 40m
H 110m
L150m (200 m : Conditional application)*
l 40m
h 40m
H 110m
L200m
Refrigerant piping system
1 Outdoor Units
Pipe Connection Method between outdoor
unit/indoor unit
Y branch method
Combination of Y branch/
header Method
Header Method
Ⓐ
: Outdoor Unit
Ⓑ
: Header branch
Ⓒ
: Indoor Units
Ⓓ
: Sealing
Ⓔ
: Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ
: Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ
: Connection branch pipe
between Outdoor
units : ARCNN21
Ⓐ
: Outdoor Unit
Ⓑ
: 1st branch(Y branch)
Ⓒ
: Y branch
Ⓓ
: Indoor Unit
Ⓔ
: Connection branch pipe
between Outdoor
units : ARCNN41
Ⓕ
: Connection branch pipe
between Outdoor
units : ARCNN31
Ⓖ
: Connection branch pipe
between Outdoor
units : ARCNN21
Ⓗ
: Header
Ⓘ
: Sealing
Slave 3
Slave2
Slave1
Master
Slave 3
Indoor
Unit
Slave2
Slave1
Master
l
40m (90 m : Conditional application)*
H 110m
L150m (200 m : Conditional application)*
h 40m
10m or
less
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave
3
Slave 3
Slave2
Slave1
Master
Slave 3
Slave2
Slave1
Master
l
40m (90 m : Conditional application)*
H 110m
L150m (200 m : Conditional application)*
h 40m
10m or
less
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave
3
Slave 3
Slave2
Slave1
Master
Slave 3
Slave2
Slave1
Master
l
40m
H 110m
L200m
h 40m
10m or
less
ODU Capacity
Master ≥ Slave 1 ≥Slave 2 ≥Slave
3
Series Outdoor Units (2 Units ~ 4 Units)
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)
h
* : See Table 4
h
* : See Table 4
h
* : See Table 4
h
* : See Table 4
h
* : See Table 4
L1
L2
L3
H1
- / .
Slave 3
Slave2
Slave1
Master
l
40m
h 40m
Indoor
Unit
1st branch
Refrigerant pipe diameter from outdoor unit to first branch
Level Difference
(Outdoor unit
↔
Outdoor unit)
5m
Max length from first branch to
each outdoor unit (L1, L2, L3)
Less than 10m
(equivalent length of piping 13m)
WARNING
Increased Pipe Diameter(table 2)
- When pipe length is 90m or more from ODU to 1st branch
- When level difference is 50m 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
(200 m: Conditional
application)*
A+B+b
≤
150 m
A+C+e
≤
150 m
(200 m: Conditional
application)*
A+f
≤
200 m
Equivalent
pipe length
175 m
(225 m: Conditional
application)*
175 m
(225 m: Conditional
application)*
225 m
Total pipe
length
1,000 m 1,000 m 1,000 m
Max
difference
in height
Outdoor Unit
↔
Indoor Unit
Difference in
height(H)
110 m 110 m 110 m
Indoor Unit
↔
Indoor Unit
Difference in
height(h)
40 m 40 m 40 m
Longest pipe
length after
1st branch
Pipe
length(l)
40 m
(90 m: Conditional
application)*
40 m
(90 m: Conditional ap-
plication)*
40 m
(Table 1) Limit Pipe length