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6.
REFRIGERANT PIPE
(only for Twin (2x1, 3x1 y 4x1))
6.1 Length and drop height permitted of the refrigerant piping
Note: Reduced length of the branching tube is the 0.5m of the
equivalent length of the pipe.
Permitted length (Unit: m)
Total piping length
Twin 2x1
Farthest distance from line pipe branch
farthest distance from the line pipe branch
Total piping length
Piping
length
Twin 3x1
Farthest distance from line pipe branch
farthest distance from the line pipe branch
Total piping length
Twin 4x1
Farthest distance from line pipe branch
farthest distance from the line pipe branch
Drop height between indoor and outdoor unit
Drop height
Drop height between two indoor units
Twin 2x1:
Outdoor unit
H1<20m
The
line branch pipe
Twin 3x1:
Outdoor unit
L
H1<20m
The
line branch pipe
Twin 4x1:
Outdoor unit
H1<20m
The
line branch pipe
Note The indoor units should be installed equivalently at the
both side of the U type branch pipe.
The branching pipe must be installed horizontally, error angle
of it should not large than 10 Otherwise, malfunction will be
Branch pipe
A direction view
Wrong
09+09
50
12+12
18+18
24+24
75
30+30
15
10
09+09+09
12+12+12
75
L+L1+L2+L3+La
18+18+18
15 L1, L2+La,L3+Lb
10
09+09+09+09
75
12+12+12+12
15
10
20
0,5
Indoor unit
H2<0.5m
Indoor unit
L1
Indoor unit
Indoor unit
L2
La
H2<0.5m
L3
Indoor unit
The
line branch pipe
Indoor unit
L1
Indoor unit
L2
La
L
Indoor unit
L3
Lb
H2<0.5m
L4
Indoor unit
o
.
Correct
Horizontal surface
6.2 Size of the joint pipes
The branch pipe will always be the model FQZHN-01D (CL09500)
System
Model
09+09
Pipes
12+12
Twin 2x1
18+18
24+24
L+L1+L2
30+30
09+09+09
Twin 3x1
12+12+12
L1, L2
18+18+18
09+09+09+09
L1-L2
Twin 4x1
12+12+12+12
6.3 Refrigerant amount to be added
According to the formula in the table, it is recommended to add refrigerant (g).
Indoor units
System
L1-(L2+La),
L1-(L3+Lb),
L2-L3
L+L1+L2+L3
Twin 2x1
+L4+La+Lb
L1, L2,L3,L4
09+09+09
L1-L2, L1-L3,
Twin 3x1
12+12+12
L1-L4, L2-L3,
18+18+18
L2-L4, L3-L4
09+09+09+09
H1
Twin 4x1
12+12+12+12
H2
Note: If the calculation result is less than 0, there is no need to
adjust the refrigerant amount
7. TEST RUN
Make sure the control box lids are closed on the indoor and outdoor
units.
Refer to ''For the following items, take special care during construction
and check after installation is finished'' on page 4.
After finishing the construction of refrigerant piping, drain piping, and
electric wiring, conduct test operation accordingly to protect the unit.
1
Open the gas side stop valve.
2
Open the liquid side stop valve.
3
Electrify crank case heater for 6 hours.
4
Set to cooling operation with the remote controller and start
operation by pushing ON/OFF button.
5
Check the following points. If there is any malfunction, please
resolve it according to the chapter "Troubleshooting" in the
"Owner's Manual".
The indoor unit
-
Whether the switch on the remote controller works well.
-
Whether the buttons on the remote controller works well.
-
Whether the air flow louver moves normally.
-
Whether the room temperature is adjusted well.
-
Whether the indicator lights normally.
-
Whether the temporary buttons works well.
-
Whether there is vibration or abnormal noise during operation.
- Whether the drainage flows smoothly.
The outdoor unit
-
Whether there is vibration or abnormal noise during operation.
-
Whether the generated wind, noise, or condensed of by the air
conditioner have influenced your neighborhood.
-
Whether any of the refrigerant is leaked.
6
Turn off the main power supply after operation.
A protection feature prevents the air conditioner from being
activated for approximately 3 minutes when it is restarted
immediately after shut off.
64
Indoor units
Outdoor unit
Size
Model
1/4"-3/8"
24
1/4"-3/8"
24
1/4"-1/2"
36
3/8"-5/8"
48
3/8"-5/8"
60
1/4"-3/8"
36
1/4"-3/8"
36
1/4"-1/2"
60
1/4"-3/8"
48
1/4"-3/8"
48
Outdoor unit
Additional charge R32 (g)
Model
Model
09+09
24
(L1+L2) x 12 + (L-5) x 24 + 700
12+12
24
(L1+L2) x 12 + (L-5) x 24 + 700
18+18
36
24+24
48
30+30
60
36
(L1+L2+L3) x 12 + (L-5) x 24 + 570
36
(L1+L2+L3) x 12 + (L-5) x 24 + 570
60
(L1+L2+L3) x 12 + (L-5) x 24 + 500
48
(L1+L2+L3+L4) x 12 + (L-5) x 24 + 660
48
(L1+L2+L3+L4) x 12 + (L-5) x 24 + 660
Size
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
3/8"-5/8"
(L1+L2) x 12 + (L-5) x 24
(L1+L2+L-5) x 24
(L1+L2+L-5) x 24 + 250
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