LG UU85W Installation Manual page 8

INSTALLATION OF OUTDOOR UNIT
8
• Synchro Operation
Install the branch pipe so that pipe length and difference between high and low will not exceed
below Spec.
L2
L3
L4
L5
H1
Remote
Controller
L1
- When installing the branch pipe, direction and angle of installation is not limited.
- Take care so that burrs and foreign material may not enter into the cutting surface when con-
necting.
- Connect remaining those by cutting or direct insertion to the diameter of pipe.
• Refrigerant Additional Charging Method
For additional charging method, see below table.
Indoor Unit
Duo Refrigerant = (L1-b) x B + (L2 + L3) x C
Trio Refrigerant = (L1-b) x B + (L2 + L3 + L4) x C
Quartet Refrigerant = (L1-b) x B + (L2 + L3 + L4 + L5) x C
Model
UU85W
NOTE
!
b : Rated performance for refrigerant line length.
C : Additional charging Refrigerant of Branch Liquid Pipe.
B : Additional charging Refrigerant of Main Liquid Pipe.
CAUTION
!
• Capacity is based on standard length and maximum allowance length is on the basis of re-
liability.
• Improper refrigerant charge may result in abnormal cycle.
Branch
A
A
Refrigerant Additional charging (g)
b (mm) B(g/m)
15 70
Pipe Length & Height
Total(L1+L2+L3+L4+L5)
Main Pipe(L1)
H2
Branch Pipe (L2+L3+L4+L5)
Each
Indoor-Outdoor (H1)
Indoor-Indoor (H2)
(L1+L2),(L1+L3),(L1+L4),(L1+L5)
A
Pipe Diameter.
[Unit : m]
Spec(MAX.)
80
40
40
10
30
1
70
10
C (g/m)
(mm)
Ø 6.35 35
Ø 9.52 40