Example connection 1 : When connecting 1 indoor unit downstream of the Branch Selector unit
Upstream
Downstream
Downstream
Indoor unit
Branch
Selector unit
(1)
(2)
(3)
Liquid pipe
Gas pipe
To outdoor unit
or refrigerant
branch kit
Table 5
Select a size from Table 3 based on the
total capacity index of the indoor units to
be connected downstream.
Select a size from Table 4 based on the
indoor unit capacity type.
(1): High/low pressure gas pipe
(2): Liquid pipe
(3): Suction gas pipe
Example connection 2 : When there is a branch downstream from the Branch Selector unit
Select a size from Table 3
based on the total capacity
index of the indoor units to
be connected downstream.
Refer to the installation manual included
with the outdoor unit or the equipment
design materials to determine the size of
the pipes between the Branch Selector unit
and the refrigerant branch kits and between
the refrigerant branch kits and indoor units.
Upstream
(1)
(2)
(3)
Branch
Selector unit
Downstream
Indoor unit
Indoor unit
Indoor unit
Refrigerant branch kit
Liquid pipe
Gas pipe
Table 5
To outdoor unit
or refrigerant
branch kit
(1): High/low pressure gas pipe
(2): Liquid pipe
(3): Suction gas pipe
Example connection 3 : When connecting Branch Selector unit in pass through
Select a size from Table 3
based on the total capacity
index of the indoor units to be
connected downstream. (A+B+C)
(1): High/low pressure gas pipe
(2): Liquid pipe
(3): Suction gas pipe
To outdoor unit
or refrigerant
branch kit
Select a size from Table 3
based on the total capacity
index of the indoor units to be
connected downstream. (B+C)
(1)
(2)
(3)
Liquid pipe
Gas pipe
Indoor unit
Table 5
2nd Branch Selector unit
Select a size from Table 3
based on the total capacity
index of the indoor units to be
connected downstream. (C)
3rd Branch Selector unit
Liquid pipe
Gas pipe
Indoor unit
Liquid pipe
Gas pipe
Indoor unit
Table 5
Table 5
(1)
(2)
(3)
(1)
(2)
(3)
A:
Total indoor unit capacity index
to be connected downstream
1st Branch Selector unit.
B:
Total indoor unit capacity index
to be connected downstream
2nd Branch Selector unit.
C:
Total indoor unit capacity index
to be connected downstream
3rd Branch Selector unit.
1st Branch Selector unit
NOTES
• Either side of refrigerant pipe (outdoor unit side) of Branch Selector unit can be upstream.
Choose which side to be upstream according to installation site.
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English
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