LG Multi V ARWN Series, Руководство по установке

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12
ENGLISH
Connection of Outside units
A B
A B C
C
(Master) (Slave1)
(Master) (Slave1) (Slave2)
A B C
(Master) (Slave1) (Slave2)
D
(Slave3)
2 Unit
3 Unit
4 Unit
ARCNN21
ARCNN31
ARCNN41
A
C
Outside units Model Gas Pipe Liquid Pipe
111
130
416
408
I.D.28.58 I.D.28.58
I.D.34.9
I.D.41.3 I.D.38.1 O.D.34.9
I.D.31.8
I.D.22.2
I.D.28.58
I.D.15.88 I.D.15.88
I.D.15.88
I.D.19.05 I.D.12.7
I.D.12.7
I.D.9.52
331
83
70
314
I.D.22.2 O.D.19.05
341
111
125
298
I.D.34.9 I.D.41.3
I.D.41.3 O.D.34.9
I.D.28.58
334
281
I.D.15.88
I.D.19.05 I.D.19.05
I.D.12.7
83
I.D.22.2
134
415
375
I.D.44.48 I.D.53.98 I.D.41.3
I.D.28.58
334
281
I.D.15.88
I.D.19.05
O.D.22.2 I.D.25.4
I.D.19.05
I.D.12.7
83
80
I.D.22.2
* Install the branch pipe between outside units so that the outlet pipe
is parallel to the surface.
Viewed from point A
in direction of arrow
/- 10°
Do not cut for
70mm or less
Execute the
welding while
pouring
nitrogen
When installing the branch pipe vertically between the outside
units, the refrigerant can be uneven between the outside units,
leading to compressor burn and reduced capacity.
CAUTION !
INSTALLATION OF WATER PIPE
Water pipe system diagram
• The water pressure resistance of the water pipe system of this
product is 1.98MPa
• When the water pipe passes indoors, make sure to execute heat
insulation on the pipe so that water drops do not form on the
outer side of the water pipe.
• The size of the drain pipe must be equal to or larger than the di-
ameter of the connecting product.
- Always install a trap so that the drained water does not back
flush.
CAUTION
1
Use the following materials for refrigerant piping.
• Material: Seamless phosphorous deoxidized copper pipe
• Wall thickness : Comply with the relevant local and national regu-
lations for the designed pressure 3.8MPa. We
recommend the following table as the minimum
wall thickness.
2
Commercially available piping often contains dust and other materi-
als. Always blow it clean with a dry inert gas.
3
Use care to prevent dust, water or other contaminants from enter-
ing the piping during installation.
4
Reduce the number of bending portions as much as possible, and
make bending radius as big as possible.
5
Always use the branch piping set shown below, which are sold sep-
arately.
6
If the diameters of the branch piping of the designated refrigerant
piping differs, use a pipe cutter to cut the connecting section and
then use an adapter for connecting different diameters to connect
the piping.
7
Always observe the restrictions on the refrigerant piping (such as
rated length, difference in height, and piping diameter).
Failure to do so can result in equipment failure or a decline in heat-
ing/cooling performance.
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
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 Outside Unit is completely closed (the factory setting)
and do not operate it until the refrigerant piping for the Outside 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.
A
A
B
Ⓐ
To Outside Unit
Ⓑ
Sealed Piping
8
A second branch cannot be made after a header. (These are shown
by .)
Outer diameter
[mm]
6.35 9.52 12.7 15.88 19.05 22.2 25.4 28.58 31.8 34.9 38.1 41.3 44.45 53.98
Minimum
thickness [mm]
0.8 0.8 0.8 0.99 0.99 0.99 0.99 0.99 1.1 1.21 1.35 1.43 1.55 2.1
Y branch
Header
4 branch 7 branch 10 branch
ARBLB01621, ARBLB03321,
ARBLB07121, ARBLB14521,
ARBLB23220
ARBL054 ARBL057 ARBL1010
ARBL104 ARBL107 ARBL2010
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 refrigerant,
the refrigerant cycle may malfunction and the unit may be dam-
aged.
• After selecting diameter of the refrigerant pipe to suit total capac-
ity of the indoor unit connected after branching, use an appropriate
branch pipe set according to the pipe diameter of the indoor unit
and the installation pipe drawing.
!