Installation The Unit; System Configuration; System Confi Guration; Pipe Selection - Fujitsu AJYA36LALH Installation Manual

3. 5.

Installation the unit

• Please install the outdoor unit without slant. (within 3 degrees )
• Install 4 anchor bolts at the locations indicated with arrows in the fi gure.
• To reduce vibration, do not install the unit directly on the ground. Install it on a secure
base (such as concrete blocks).
• The foundation shall support the legs of the unit and have a width of 50mm or more.
• Depending on the installation conditions, the outdoor unit may spread its vibration
during operation, which may cause noise and vibration. Therefore, attach damping
materials (such as damping pads) to the outdoor unit during installation.
• Install the foundation, making sure that there is enough space for installing the con-
nection pipes.
• Secure the unit to a solid block using foundation bolts. (Use 4 sets of commercially
available M10 bolts, nuts, and washers.)
• The bolts should protrude 20mm. (Refer to the fi gure.)
• If overturning prevention is required, purchase the necessary commercially available
items.
166 650
AIR
50
50
Do not install directly on the ground, this may result in
equipment failure.
Make sure the height of the base is 50 mm from the ground.
Otherwise, there is a risk that the drainage water will freeze
between the device and the surface, disabling drainage.
In areas with heavy snowfall , where intake
and outlet of the outdoor unit can become
blocked by snow.
It is recommended that unit be installed
under a canopy or elevated on a high
stand.
50 mm
Base
Failure to do so will result in poor heating
or over
performance and/or premature failure of
equipment.
4.

SYSTEM CONFIGURATION

4. 1. System confi guration
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 < = 120m, a+p < = 120m
• Between the fi rst separation tube and the farthest indoor unit
f < = 40m, p < = 40m
• Between the nearest indoor unit and the outdoor unit
a+b+h > = 5m , a+c+q > = 5m
• Between outdoor unit and the fi rst separation tube
a > = 3m
• Difference in height between outdoor units and indoor units (H1)
30m: For the indoor unit stated below
30m: For the outdoor unit stated below
• Difference in height between indoor units and indoor units
H2 < = 15m, H3 < = 15m
• Maximum total equivalent pipe length
a+f+h+j+l+n+p+q+s+u < = 180m
< = 15.7kg
• Total refrigerant amount
Fig. A
f
b j
h
c
Indoor
unit
p
q
Indoor
unit
En-5
154 (Unit: mm)
Bolt
CAUTION
CAUTION
Outdoor
unit
a
l n
Indoor Indoor Indoor Indoor
unit unit unit unit
H2
s u
Indoor Indoor
unit unit
Indoor
H3
unit
4. 2.

Pipe selection

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.
Nut
Base
Table. A (Wall thickness and pipe material for each diameter)
Outside Diameter
Wall Thickness
Material
Please select the pipe size in accordance with local rules.
*1. Allowable tensile stress
*2. Endurance pressure of the pipes 4.2MPa
Table. B (Diameter of piping used between outdoor unit and fi rst separation
tubes or headers)
MODEL
AJ A36LALH
AJ A40LALH
AJ A45LALH
AJ A54LALH
*3. Pipe Length: "a+f" or "a+p" of "4.1. SYSTEM CONFIGURATION"
Table. C (Diameter of piping used between separation tubes)
Total cooling capac-
ity of indoor unit [kW]
4.4 to 11.1
11.2 to 20.1
*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
H1
indoor unit
07 to 14
18 to 30
36 to 54 *5
*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.)
CAUTION
First separation Separation tube
tube (optional) (optional)
Indoor Indoor
Indoor Indoor Indoor
unit unit
unit unit unit
mm 6.35 9.52
(in.) (1/4) (3/8)
mm 0.8 0.8
*2
(in.) (0.032) (0.032)
JIS H3300 C1220T-O or equivalent
2
33 (N/mm )
> =
Diameter of piping [mm(in.)]
Between outdoor unit
Outdoor
and the farthest indoor
unit cooling
unit < 90m *3
capacity (kW)
Liquid pipe Gas pipe
9.52
11.2
(3/8)
9.52
12.1
(3/8)
9.52
14.0
(3/8)
9.52
15.5
(3/8)
Outside diameter [mm(in.)]
Liquid pipe Gas pipe
9.52 15.88
(3/8) (5/8)
9.52 19.05
(3/8) (3/4)
Outside diameter [mm(in.)]
Liquid pipe
6.35 (1/4)
9.52 (3/8)
9.52 (3/8)
Pipe size
(table B)
Pipe size
(table C)
Pipe size
(table D)
Indoor
unit
12.70 15.88 19.05
(1/2) (5/8) (3/4)
0.8 1.0 1.2
(0.032) (0.039) (0.047)
*1
COPPER
Between outdoor unit
and the farthest indoor
unit ≥ 90m *3
Liquid pipe Gas pipe
15.88 9.52 19.05
(5/8) (3/8) (3/4)
15.88 9.52 19.05
(5/8) (3/8) (3/4)
15.88 9.52 19.05
(5/8) (3/8) (3/4)
19.05 9.52 19.05
(3/4) (3/8) (3/4)
Separation
Header *4
tube *4
UTR-H0906L
UTP-AX090A
UTR-H0908L
Gas pipe
12.70 (1/2)
15.88 (5/8)
19.05 (3/4)