LG multi V JRUN Series Installation Manual page 31

3 Outdoor Units
Example : 5 Indoor Units
connected
? : Outdoor Unit
? : 1st branch (Y branch)
: Indoor Units
C
: Downward Indoor Unit
D
? : Connection branch pipe
between Outdoor units:
ARCNN31
? : Connection branch pipe
between Outdoor units:
ARCNN21
4 Outdoor Units
Example : 5 Indoor Units
connected
? : Outdoor Unit
? : 1st branch (Y branch)
C : Indoor Units
D : Downward Indoor Unit
? : Connection branch pipe
between Outdoor units:
ARCNN41
? : Connection branch pipe
between Outdoor units:
ARCNN31
G : Connection branch pipe
between Outdoor units :
ARCNN21
Piping length form outdoor branch to outdoor unit ≤ 10 m, equivalent length : max. 13 m(for 22 HP or
more)
Additional Application
To satisfy below condition to make 40 m ~ 90 m of pipe length after first branch.
1) Diameter of pipes between first branch and the last branch should be increased by one step,
except pipe diameter B,C,D is same as Diameter A
Ø6.35 Ø 9.52 Ø 12.7
38.1*
* : It is not necessary to size up.
2) While calculating whole refrigerant pipe length, pipe B,C,D length should be calculated twice.
A+Bx2+Cx2+Dx2+a+b+c+d+e ≤ 1,000 m
3) Length of pipe from each indoor unit to the closest branch (a,b,c,d,e) ≤ 40 m
4) [Length of pipe from outdoor unit to the farthest indoor unit 5 (A+B+C+D+e)]
- [Length of pipe outdoor unit to the closest indoor unit 1 (A+a)] ≤ 40 m
Pipe connections between indoor and outdoor unit
Slave2
10m or
less
Slave3
G
10m or
less
Ø 15.88 Ø 19.05 Ø 22.2
Slave1
Master
Master ≥ Slave1 ≥ Slave 2
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
Slave2
Slave1
Master
ODU Capacity
Master ≥ Slave1 ≥ Slave 2 ≥ Slave 3
L150m (200 m : Conditional application)
l 40m (90 m : Conditional application)
Ø 25.4*, Ø 28.58 Ø 31.8*, Ø 34.9
Installation Manual 31
ODU Capacity
Ø