Fujitsu AirStage AJY040LELAH - System Configuration; Pipe Selection; Protection of Pipes

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Table. B (Diameter of piping used between outdoor unit and fi rst separation
tubes or headers)
MODEL
Outdoor
unit cool-
ing capac-
ity [kW]
Diameter of piping [mm (in.)]
Between outdoor unit
and the farthest indoor
unit < 90m *3
Between outdoor unit
and the farthest indoor
unit ≥ 90m *3
Liquid pipe Gas pipe Liquid pipe Gas pipe
AJ*040LELAH 12.1 9.52 (3/8) 15.88 (5/8) 9.52 (3/8) 19.05 (3/4)
AJ*045LELAH 14.0 9.52 (3/8) 15.88 (5/8) 9.52 (3/8) 19.05 (3/4)
AJ*054LELAH 15.5 9.52 (3/8) 19.05 (3/4) 9.52 (3/8) 19.05 (3/4)
*3: Pipe Length: “a + f” or “a + p” of “4.1. System confi guration”
Table. C (Diameter of piping used between separation tubes)
Total cooling
capacity of indoor
unit [kW]
Outside diameter [mm(in.)]
Separation
tube *4
Header *4
Liquid pipe Gas pipe
4.4 to 11.1 9.52 (3/8) 15.88 (5/8)
UTP-AX054A
UTR-H0906L
UTR-H0908L
11.2 to 20.1 9.52 (3/8) 19.05 (3/4)
*4: For the installation method, please refer to the installation manuals for indoor unit,
separation tubes or headers.
If pipe diameter Table C > Table B , select pipe size from Table B.
“Total cooling capacity of indoor unit” is the total value for the cooling capacity of indoor
unit connected downstream.
Use a standard separation tube for pipe branching. Do not use a T tube as it does not
separate the refrigerant evenly.
Table. D (Diameter of piping used between separation tube and indoor unit)
Model code of
indoor unit
Outside diameter [mm(in.)]
Liquid pipe Gas pipe
07 to 14 6.35 (1/4) 12.70 (1/2)
18 to 30 9.52 (3/8) 15.88 (5/8)
36 to 54 *5 9.52 (3/8) 19.05 (3/4)
*5: If pipe diameter Table D > Table C , using of pipe size from Table C is preferable.
(Use reducer to change the diameter of connection pipe.)
Table. E (Indoor unit capacity comparison table - The indication of power is
different depending on the model.)
Model code of
indoor unit
04 07 09 12 14 18 24 30 36 45 54
Capacity [kW]
1.1 2.2 2.8 3.6 4.5 5.6 7.1 9.0 11.2 12.5 14.0
In the case of ARXB07LALH: equivalent to model code of indoor unit
Model code 07 → Capacity=2.2kW
4.3. Protection of pipes
Location Working period Protection method
Outdoor
1 month or more Pinch pipes
Less than 1 month Pinch or tape pipes
Indoor — Pinch or tape pipes
• Protect the pipes to prevent the entry of moisture and dust.
• Especially pay attention when passing the pipes through a hole or connecting the end of
a pipe to the outdoor unit.
4. SYSTEM CONFIGURATION
4.1. System confi guration
CAUTION
Always keep to the limit on the total amount of refrigerant. Exceeding the limit on the
total amount of refrigerant when charging will lead to malfunction.
• Between outdoor unit and the farthest indoor unit
a + f ≤ 120 m, a + p ≤ 120 m
• Between the fi rst separation tube and the farthest indoor unit
f ≤ 40 m, p ≤ 40 m
• Between the nearest indoor unit and the outdoor unit
a + b + h ≥ 5 m, a+c+q ≥ 5 m
• Between outdoor unit and the fi rst separation tube
a ≥ 3 m
• Difference in height between outdoor units and indoor units (H1*)
50 m or less: Outdoor unit is higher than indoor unit
40 m or less: Outdoor unit is lower than indoor unit
• Difference in height between indoor units and indoor units
H2 ≤ 15 m, H3 ≤ 15 m
• Maximum total equivalent pipe length
a + f + h + j + l + n + p + q + s + u ≤ 180 m
• Total refrigerant amount ≤ 15.7 kg
Fig. A
Outdoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
H1*
H2
H3
f
h
p
q
j
s
u
l
n
b
c
a
4.2. Pipe selection
CAUTION
This unit is designed specifi cally for use with the R410A refrigerant.
Pipes for R407C or R22 may not be used with this unit.
Do not use existing pipes.
Improper pipe selection will degrade performance.
First separation
tube (optional)
Separation tube
(optional)
Pipe size
(table B)
Pipe size
(table C)
Pipe size
(table D)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Table. A (Wall thickness and pipe material for each diameter)
Outside Diameter
mm
(in)
6.35
(1/4)
9.52
(3/8)
12.70
(1/2)
15.88
(5/8)
19.05
(3/4)
Wall Thickness
*2
mm
(in)
0.8
(0.032)
0.8
(0.032)
0.8
(0.032)
1.0
(0.039)
1.2
(0.047)
Material
COPPER
*1
JIS H3300 C1220T-O or equivalent
Please select the pipe size in accordance with local rules.
*1: Allowable tensile stress ≥ 33 N/mm
*2: Endurance pressure of the pipes 4.2 MPa
9380545163-02_IM.indb 59380545163-02_IM.indb 5 5/17/2018 14:56:205/17/2018 14:56:20