Mitsubishi Electric MXZ-8C48NA2 Installation Manual page 5

2. Installation location
Fig. 2-3
Fig. 2-5
A
Fig. 2-4
B
2.5. 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.
• I ndoor units with model numbers 06, 09, 12, 15, 18, 24, 30, and 36 can be connected.
• F or the number of units that can be connected, refer to Table 1 below.
• T he 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 be
Outdoor unit model name
connected
MXZ-4C36 2* – 4 (3) units *
1
MXZ-5C42 2* – 5 (4) units *
1
MXZ-8C48 2* – 8 (6) units *
1
MXZ-8C60 2* – 8 (6) units *
1
*1 Only one unit connection is possible with SVZ-series unit.
*2 The number enclosed in parentheses is the maximum number of units that can be
connected when 1 or more PLA-A·EA7 units is connected.
*3 When connecting a SVZ-series unit(s), set additional constraints as follows.
For connections other than those specified below, consult your dealer.
Number of connecting
SVZ-series unit
Any indoor units other than SVZ-series units are not
2
connectable.
• The total rated capacity (cooling) should be 100% or
below including the SVZ-series unit (only 8C60).
1
• Only 1 SEZ or 1 PEAD can be included in the con-
nection.
*4 A branch box can connect to maximum 3 of the SEZ/PEAD-series units.
*5 A branch box can connect to maximum 2 of the SEZ/PEAD-series units.
When connecting with 1 and over 1 of the SEZ/PEAD-series units, the total
rated capacity (cooling) including of the SEZ/PEAD is 100% and below 100%
For connections other than those specified in 1 and 2, including connections with
SVZ-series units, consult a dealer.
Table 2: Rated capacity (cooling) of the indoor units
Model No.
Rated capacity (Cooling) (kBtu/h)
Example: MXZ-8C60
MSZ-24 = 24
+
SEZ-15 = 15
+
Total rated capacity
SEZ-15 = 15
72 ≤ 78 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.
2.6. Ventilation and service space
Note:
The dimensions given along the arrows above are required to guarantee the
air conditioner's performance. Install the unit in as wide a place as possible
for later service or repairs.
2.6.1. 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 three 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. 2-3)
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. 2-4)
A Air guide
3 Position the unit so that the air outlet blows perpendicularly to the seasonal wind
direction, if possible. (Fig. 2-5)
B Wind direction
Capacity range of
connected units
* * 12 – 46 kBtu/h
2 3 4
* * 12 – 54 kBtu/h
2 3 4
* * 12 – 62 kBtu/h
2 3 4
* * 12 – 78 kBtu/h
2 3 5
Constraints
(For each connected branch box)
06 09 12 15 18 24 30
6 9 12 15 18 24 30
36
36
en
4