5-3 Piping connection
Liquid pipe (*1)
Suction gas pipe (*1)
High/low pressure gas
pipe (*1)
Branch Selector unit (top)
Unit D
Unit C
Unit B
Unit A
Liquid pipe (*1)
Gas pipe (*1)
Reducing joint (*2)
Notes
In case of connecting with a 07-18 type indoor
unit, there is no need to cut and connect as it is.
In case of others, cut the outlet pipe and
connect to the connecting pipe.
In accordance with the following instructions.
Cutting point
(Center of
connection area)
Connect
Local pipe
Connection area
(*1) Indicates local pipe.
(*2) Reducing joint may be required (field supply) if the local pipe size does not suit on the pipe size of
the Branch Selector unit (Table 5).
If there are branch ports left unused (not connected to an indoor unit)
•
If there are unused branch ports, use stopper pipe (4) (accessory).
If there are numerous unused branch ports, be sure to use the stop pipe kit (KHFP26A100C).
5-4 Airtightness test and vacuum drying
•
After completing refrigerant piping work for the indoor units, Branch Selector unit, and outdoor unit,
conduct an airtightness test and vacuum drying.
For more information about the airtightness test pressure, refer to the outdoor unit’s installation man-
ual.
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