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Verfügbare Sprachen
Verfügbare Sprachen
Are there scratches or dents on the existing pipes?
NO
Is it possible to operate the existing air conditioner?
YES
After the existing air conditioner is operated in
cooling mode for approx. 30 minutes or longer,*
recover the refrigerant.
Refer to "13 Refrigerant recovery".
For cleaning the pipes and recovering oil
Refrigerant recovery: Pump down method
Remove the existing air conditioner from the piping
and carry out flushing (nitrogen pressure 0.5 MPa)
to remove any remains inside of the pipe.
Note: In case of twin pipes, also be sure to flush the
branching pipe.
Was largely discolored oil or a large quantity of
remains discharged? (When the oil
deteriorates, the color of the oil changes to a
muddy or black color.)
NO
Connect the indoor / outdoor units to the existing pipe.
Use a flare nut attached to the main unit for the
indoor / outdoor units. (Do not use the flare nut of the
existing pipe.)
Re-machine the flare machining size to size for
R32.
In case that the gas pipe Ø19 mm is used for the
outdoor unit of GM80 (3 HP) or higher : (Our R32
model 3 to 5 HP gas pipe size is Ø15.9 mm)
See page 19 "Existing piping".
(Airtight test), Vacuum dry, Refrigerant charge, Gas
leak check
Test run
43-EN
YES
Existing pipes: Cannot be used.
Use new pipes.
NO
Nitrogen gas pressure 0.5 MPa
(If there is discharge of remains, it is judged that a
large quantity of remains are present.)
YES
Clean the pipes or use new pipes.
Piping necessary to change the flare nut / machining
size due to pipe compression
1) Flare nut width: H
Copper
pipe outer
Ø6.4
Ø9.5
Ø12.7 Ø15.9 Ø19.0
diameter
For R32,
17
22
26
29
R410A
Same
H
Same as
For R22
24
27
above
above
2) Flare machining size: A
Copper
pipe outer
Ø6.4
Ø9.5
Ø12.7 Ø15.9 Ø19.0
A
diameter
For R32,
9.1
13.2
16.6
19.7
24.0
R410A
For R22
9.0
13.0
16.2
19.4
23.3
Becomes a little larger for R32/R410A
Do not apply refrigerator oil to the flare surface.
[2] Minimum fl oor area : A
Total
refrigerant
quantity*
h
0
M (kg)
2.100
2.135
2.170
2.205
2.240
2.275
2.310
2.345
2.380
2.415
4HP
2.450
5HP
2.485
2.520
2.555
2.590
2.625
2.660
2.695
2.730
2.765
Max.
2.800
* Total refrigerant quantity: Refrigerant quantity pre-charged at factory + Additional
refrigerant quantity charged during installation
(mm)
36
as
(mm)
– 22 –
(m
2
)
min
Floor
Wall
Ceiling
standing
mounted
mounted
unit
unit
unit
0.6
1.8
2.2
2
A
(m
)
min
37.840
4.204
2.815
39.112
4.346
2.909
40.405
4.489
3.005
41.719
4.635
3.103
43.054
4.784
3.202
44.410
4.934
3.303
45.787
5.087
3.406
47.185
5.243
3.510
48.604
5.400
3.615
50.044
5.560
3.722
51.505
5.723
3.831
52.987
5.887
3.941
54.490
6.054
4.053
56.014
6.224
4.166
57.559
6.395
4.281
59.125
6.569
4.398
60.712
6.746
4.516
62.321
6.925
4.635
63.950
7.106
4.757
65.600
7.289
4.879
67.271
7.475
5.004
EN
ID
ID
44-EN
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