Installation The Unit; System Configuration; System Confi Guration - Fujitsu Airstage AJYA72LALH Installation Manual

<Front>
Fork (Forklift)
Delivery pallet
3. 5.

Installation the unit

• Install the unit level. (within 3 degrees).
• Install 4 or more anchor bolts at the 8 locations indicated by arrows (Fig. A).
• Place the left and right anchor bolts at a distance further away than the dimensions
of A in the Table A.
(Excluding the case where anchor bolts are installed at 8 places.)
Fig. A
160
Hole: 12 × 17
(8 places)
Bottom view
80
Table.A
Model name
□
AJ A72LALH
□
AJ A90LALH
□
AJ 108LALH
□
AJ 126LALH
□
AJ 144LALH
• To minimize vibration, do not install the outdoor unit directly on the ground.
Instead, install it on top of a fi rm platform (such as concrete block). (Fig. B)
• The foundation base should be able to support the product and the foot width of
the product should be more than 46.5mm.
• Depending on the installation condition, vibration during the operation of the unit
may cause noise and vibration.
Install vibration-proofi ng materials (such as rubber pads).
• Consider the removal space of the connection piping when installing the founda-
tion.
• Secure the equipment fi rmly with anchor bolts, washers, and nuts.
Fig. B
PROHIBITED GOOD
*Do not use a four-corner support foundation.
Fig. C
When installing pip-
ing from the bottom
of the outdoor units,
the required space
under the outdoor
unit ≥ 200mm.
* Install the branch
kit horizontally.
<Side>
Fork (Forklift) or
Fork (Manual forklift)
(Unit: mm)
B
A 160
80
A B
610 930
610 930
610 930
920 1240
920 1240
GOOD
Bolt (M10)
More than
200mm
4.

SYSTEM CONFIGURATION

4. 1. System confi guration
CAUTION
• When connecting multiple outdoor units, set the nearest outdoor unit to the indoor
unit on the refrigerant pipe as the master unit.
• When connecting multiple outdoor units, install the outdoor unit with the largest
nominal system capacity nearest to the indoor unit on the refrigerant pipe, fol-
lowed by those with less nominal system capacities.
[Capacity: Master ≥ Slave]
• 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.
A) In case of 1 outdoor unit connected
Fig. A
a
f
I.U. I.U.
I.U. I.U.
• Allowable pip length (actual pipe length)
Between master outdoor unit and the
farthest indoor unit
Between the fi rst separation tube and the
farthest indoor unit
Total pipe length
• Allowable height difference
Between outdoor unit and indoor unit (When
indoor unit is installed below)
Between outdoor unit and indoor unit (When
outdoor unit is installed below)
Between indoor units
• Total refrigerant amount : 31.5 kg or less
B) In case of 2 outdoor units connected
Fig. B
O.U.-1
H4
(Master)
a
e
f
I.U. I.U.
I.U. I.U.
• Allowable pip length (actual pipe length)
Between master outdoor unit and the
farthest indoor unit
Between the fi rst separation tube and the
farthest indoor unit
Total pipe length
Between outdoor unit and outdoor unit
branch kit
O.U.
(Master)
O.U. :Outdoor unit
I.U. :Indoor unit
H1
I.U. I.U. I.U.
H2
I.U.
H3
I.U.
a+f
150 m or less
a+p
60 m or less f, p
700 m or less Total
50 m or less
H1
40 m or less
15 m or less H2, H3
O.U.-2
(Slave)
O.U. :Outdoor unit
I.U. :Indoor unit
b
H1
I.U. I.U. I.U.
p
H2
I.U.
H3
I.U.
a+e+f
150 m or less
a+e+p
60 m or less f, p
1000 m or less Total
3 m or less a, b
En-6