Synchro Operation; Synchro Operation - LG Single "A" Service Manual

Part 2 Functions & Controls

8. Synchro operation

8.1 Piping length guide
Install the branch pipe so that pipe length and difference between high and low will not exceedbelow SPEC.
L2
L3
L4
L5
h1
Controller
8.2 Additional refrigerant charging guide
Indoor Unit Refrigerant Additional charging (kg)
Duo Refrigerant = (L1-a) x B + (L2 + L3) x A
Trio Refrigerant = (L1-a) x B + (L2 + L3 + L4) x A
Quartet Refrigerant = (L1-a) x B + (L2 + L3 + L4 + L5) x A
Model a
AUUW42-606(8)D
7.5
8.3 Electric Wiring method
Synchro 2,3,4
Single or Synchro 1
(380V-415V3N~)
Terminals on the
Outdoor unit
R S
POWER INPUT
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Branch
b
b
Remote
Main (L1)
B
0.04
S Terminals on the indoor unit 4
S
Terminals on the indoor unit 3
S
Terminals on the indoor unit 2
M Terminals on the indoor unit 1
(220V-240V~)
T N L
POWER INPUT
h2
Pipe Dia.
(mm)
Ø 6.35
Ø 9.52
1(L) 2(N)
1(L) 2(N)
1(L) 2(N)
1(L) 2(N)
N
1(L) 2(N) 3
CVT, DUCT
- 48 -
Pipe Length
Total(L1+L2+L3+L4+L5)
Main Pipe(L1)
Branch Pipe - L2+L3+L4+L5
Each
In out (h1)
In-In (h2)
L1+L2,L1+L3,L1+L4,L1+L5
L2-L3,L4-L5 : b
Fig.1 Piping length
A
0.03 kg/m
0.04 kg/m
3 1(L) 2(N) 3
3 1(L) 2(N) 3
3 1(L) 2(N) 3
3 1(L) 2(N) 3
1(L) 2(N) 3
CST
When using synchro operation,
Use only one wired remote controller
in the indoor units.
Fig.2 electric wiring
LGE Internal Use Only
[Unit : m]
Spec.
Max 80
Max 50
Max 40
Max 15
Max 30
Max 1
Max 70
Max 10
CN-REMO
CN-REMO
CN-REMO
CN-REMO
Remote
Controller