LG Multi V Space II ARUN053GF2 User Manual

9
ENGLISH
WARNING
When installing and moving the air conditioner to another site, be
sure to make recharge refrigerant after perfect evacuation.
- If a different refrigerant or air is mixed with the original refriger-
ant, the refrigerant cycle may malfunction and the unit may be
damaged.
- After selecting diameter of the refrigerant pipe to suit total ca-
pacity of the indoor unit connected after branching, use an appro-
priate branch pipe set according to the pipe diameter of the
indoor unit and the installation pipe drawing.
Do not use anti-oxidants when brazing the pipe joints. Residue can
clog pipes and break equipment.
!
No. Piping parts Name Selection of pipe size
①
Outdoor unit
↓
1st branching
section
Main pipe
Size of main pipe
②
Branching
section
↓
Branching
section
Branching
pipe
Pipe size of between branching sec-
tions
③
Branching
section
↓
Indoor unit
Indoor unit
connecting
pipe
Connecting pipe size of indoor unit
9. The Multi V will stop due to an abnormality like excessive or insuffi-
cient refrigerant. At such a time, always properly charge the unit.
When servicing, always check the notes concerning both the piping
length and the amount of additional refrigerant.
10. Never perform a pump down. This will not only damage the com-
pressor but also deteriorate the performance.
11. Never use refrigerant to perform an air purge. Always evacuate air
by using a vacuum pump.
12. Always insulate the piping properly. Insufficient insulation will re-
sult in a decline in heating/cooling performance, drip of condensate
and other such problems.
13. When connecting the refrigerant piping, make sure the service
valves of the Outdoor Unit is completely closed (the factory setting)
and do not operate it until the refrigerant piping for the Outdoor and
Indoor Units has been connected, a refrigerant leakage test has
been performed and the evacuation process has been completed.
14. Always use a non-oxidizing brazing material for brazing the parts
and do not use flux. If not, oxidized film can cause clogging or dam-
age to the compressor unit and flux can harm the copper piping or
refrigerant oil.
3
2
1
45
6
1 Refrigerant piping 4 Taping
2 Pipe to be brazed 5 Valve
3 Nitrogen 6 Pressure-reducing valve
Outdoor unit
Gas pipe
Main pipe
Liquid pipe
Branching
pipe
Branching
pipe
Indoor unit
Outdoor unit
capacity type
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
6 HP Ø9.52(3/8) Ø19.05(3/4)
Indoor unit
capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19,100)
Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
< 22.4(76,400) Ø9.52(3/8) Ø19.05(3/4)
Indoor unit
capacity
[kW(Btu/h)]
Liquid pipe
[mm(inch)]
Gas pipe
[mm(inch)]
≤ 5.6(19,100)
Ø6.35(1/4) Ø12.7(1/2)
< 16.0(54,600) Ø9.52(3/8) Ø15.88(5/8)
Refrigerant piping system
Y branch method
Example : 5 Indoor Units
connected
Ⓐ : Outdoor Unit
Ⓑ : 1st branch (Y branch)
Ⓒ : Indoor Units
Total pipe length = A+B+C+D+a+b+c+d+e ≤ 145 m (475.7 ft)
* : Assume equivalent pipe length of Y branch to be 0.5 m (1.6 ft),
that of header to be 1 m (3.3 ft), calculation purpose
L70 m (230 ft)
l 40 m (131 ft)
H 30 m (98.4 ft)
h 15 m (49 ft)
L
Longest pipe length Equivalent pipe length
A+B+C+D+e ≤ 70 m (230 ft) * A+B+C+D+e ≤ 90 m (295.2 ft)
l
Longest pipe length after 1st branch
B+C+D+e ≤ 40 m (131 ft)
H
Difference in height(Outside Unit ÷ Indoor Unit)
H ≤ 30 m (98.4 ft)
h
Difference in height (Indoor Unit ÷ Indoor Unit)
h ≤ 15 m (49 ft)
CAUTION
• Indoor Unit should be installed at lower position than the header
!
Selection of Refrigerant Piping

LG Multi V Space II ARUN053GF2 Specifications

General

Brand	LG
Model	Multi V Space II ARUN053GF2
Category	Air Conditioner
Language	English