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Mitsubishi Electric MXZ-8C48NAHZ Mode D'emploi page 4

Climatiseurs unité d'extérieur
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3. Installation location
Fig. 3-1
Fig. 3-2
Fig. 3-4
4
(inch)
A
Fig. 3-3
B
3.1. Refrigerant pipe
Refer to 5.2. Pipe length and height difference.
3.2. Choosing the outdoor unit installation location
• Avoid locations exposed to direct sunlight or other sources of heat.
• Select a location from which noise emitted by the unit will not inconvenience
neighbors.
• Select a location permitting easy wiring and pipe access to the power source and
indoor unit.
• Avoid locations where combustible gases may leak, be produced, flow, or accumu-
late.
• Note that water may drain from the unit during operation.
• Select a level location that can bear the weight and vibration of the unit.
• Avoid locations where the unit can be covered by snow. In areas where heavy
snow fall is anticipated, special precautions such as raising the installation location
or installing a hood on the air intake must be taken to prevent the snow from
blocking the air intake or blowing directly against it. This can reduce the airflow and
a malfunction may result.
• Avoid locations exposed to oil, steam, or sulfuric gas.
• Use the transportation handles of the outdoor unit to transport the unit. If the unit is
carried from the bottom, hands or fingers may be pinched.
3.3. Outline dimensions (Outdoor unit) (Fig. 3-1)
3.4. Constraints on indoor unit and branch box installation
You should note that indoor units that can be connected to this outdoor unit have
the following constraints.
• Indoor units with model numbers 06, 09, 12, 15, 18, 24, 30, and 36 can be con-
nected.
• For the number of units that can be connected, refer to Table 1 below.
• The total rated capacity (cooling) of the connected indoors units (refer to Table 2)
must not exceed 130% of the outdoor unit capacity (refer to the capacity range of
connected units in Table 1).
In addition, up to 2 branch boxes can be connected.
Table 1: Number of units that can be connected and capacity range of connected units
Number of units that can
Outdoor unit model name
be connected
MXZ-4C36
2 – 4* units
MXZ-5C42
2 – 5* units
MXZ-8C48
2 – 8* units
* For the MVZ series, a maximum of 2 units can be connected. However, when 2
MVZ-series units are connected, other indoor units cannot be connected.
Table 2: Rated capacity (cooling) of the indoor units
Model No.
06
Rated capacity (Cooling)
6
Example: MXZ-8C48
MSZ-18 = 18
+
SEZ-12 = 12
+
SLZ-12 = 12
Total rated capacity
+
60 ≤ 62 kBTU/h
SLZ-09 = 9
+
SLZ-09 = 9
Combinations in which the total capacity of indoor units exceeds the capacity of the
outdoor unit will reduce the cooling capacity of each indoor unit below their rated
cooling capacity. Thus, combine indoor units with an outdoor unit within the outdoor
unit's capacity, if possible.
3.5. Ventilation and service space
3.5.1. Windy location installation
When installing the outdoor unit on a rooftop or other location unprotected from the
wind, situate the air outlet of the unit so that it is not directly exposed to strong winds.
Strong wind entering the air outlet may impede the normal airflow and a malfunction
may result.
The following shows 3 examples of precautions against strong winds.
1 Face the air outlet towards the nearest available wall about 50 cm (19-11/16")
away from the wall. (Fig. 3-2)
2 Install an optional air guide if the unit is installed in a location where strong winds
from a typhoon, etc. may directly enter the air outlet. (Fig. 3-3)
A Air guide
3 Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 3-4)
B Wind direction
Capacity range of con-
nected units
12 – 46 kBTU/h
12 – 54 kBTU/h
12 – 62 kBTU/h
09
12
15
18
24
30
9
12
15
18
24
30
36
36

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