Selecting The Installation Site - Panasonic U-4LE1E5 Installation Instructions Manual

Checking of limit density
Density limit is determined on the basis of the size of a room
using an indoor unit of minimum capacity. For instance, when
an indoor unit is used in a room (floor area 7.43 m
height 2.7 m = room volume 20.06 m
3
volume should be 25.8 m
of 7.738 kg (3.5 kg + 4.238 kg). Accordingly, openings such as
louvers are required for this room.
<Determination by calculation>
Overall refrigerant charge amount for the air conditioner: kg
(Minimum room volume for indoor unit: m
4.238 (kg) + 3.5 (kg)
=
= 0.39 (kg/m
3
20.06 (m )
Therefore, openings such as louvers are required for this room.
2 3
m m
125 337.5
120 324.0
115 310.5
110 297.0
105 283.5
100 270.0
95 256.0
90 243.0
85 229.5
Range below the
80 216.0
density limit of 0.3 kg/m³
75 202.5
(Countermeasures not
70 189.0
needed)
65 175.5
60 162.0
55 148.5
50 135.0
45 121.5
40 108.0
35 94.5
30 81.0
25 67.5
20 54.0
15 40.5
10 27.0
5 13.5
0 0.0
0 10

2. SELECTING THE INSTALLATION SITE

2-1. Outdoor Unit
AVOID:
● heat sources, exhaust fans, etc. (Fig. 2-1)
● damp, humid or uneven locations
● indoors (no-ventilation location)
DO:
● choose a place as cool as possible.
● choose a place that is well ventilated and outside air
temperature does not exceed maximum 45°C constantly.
● allow enough room around the unit for air intake/
exhaust and possible maintenance. (Figs. 2-2, 2-3, 2-4)
● use lug bolts or equal to bolt down unit, reducing vibration
and noise.
AMP Air Conditioning
2
× ceiling
3
), the minimum room
3
(7.738 kg ÷ 0.3 kg/m ) for refrigerant
3
)
3 3
) 0.3 (kg/m )
Range above the
density limit of 0.3 kg/m³
(Countermeasures needed)
20 30 40 50 60 70 80
Total amount of refrigerant
Hot air
Installation space for outdoor unit
Install the outdoor unit with a sufficient space around the
outdoor unit for operation and maintenance.
(1) Obstructions on the left side, right side and rear side (Front
side and above the unit are opened). (Fig. 2-2)
* The outdoor units require necessary space to unscrew on
the rear side for maintenance and if a sufficient maintenance
space is provided on the rear side (40 cm), the space of over
15 cm is enough at the right side.
(2) Obstructions on the front side and rear side (Left side, right
side and above the unit are opened). (Fig. 2-3)
90 100 kg
* For compressor replacement, 50 cm or more is required on
the front side even when using the air discharge chamber.
(3) Obstructions on the front side and above the unit (Left
side, right side and rear side are opened). (Fig. 2-4)
B
11
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Exhaust fan
Heat source
Out-
door
unit
A *B
15 cm 25 cm
or more or more or more
*A
50 cm
or more or more
A
50 cm
or more or more
Fig. 2-1
C
20 cm
Fig. 2-2
B
15 cm
Fig. 2-3
B
30 cm
Fig. 2-4