16
3P477778-7G English
Side (bottom) connection
Remove the knockout hole on the bottom frame and lead out the
piping from the bottom frame.
1
4
6
7
8
4
5
3
2
Open knockout
hole here
1 Liquid pipe stop valve
2 Suction gas pipe stop valve
3 High/low pressure gas pipe stop valve
4 Filed connection piping kit (accessory)
5 Knockout hole
6
Liquid side piping (field supply)
7
Suction gas side piping (field supply)
8
High/low pressure gas side piping (field supply)
INFORMATION
All local inter unit piping are field supplied except the accessory pipes.
NOTE
Precautions when connecting field piping. Add brazing material as
shown in the figure.
1
1
1
1
2
2
≤
φ
1 in. (25.4 mm)
>
φ
1 in. (25.4 mm)
NOTE
•
Be sure to use the supplied accessory pipes when carrying out pip-
ing work in the field.
• Be sure that the field installed piping does not touch other pipes,
the bottom panel or side panel. Especially for the bottom and side
connection, be sure to protect the piping with suitable insulation, to
prevent it from coming into contact with the casing generated.
Connection from the stop valves to the field piping can be done by us
-
ing accessory pipes supplied as accessory.
NOTE
Make sure that the onsite piping does not come in contact with other
piping, the bottom frame or side panels of the unit.
The connections to the branch kits are the responsibility of the installer
(field piping).
8 .2 .4 . Precautions when connecting piping between outdoor
units (multiple outdoor units system)
•
To connect the piping between outdoor units, an optional multi
connection piping kit BHFP26P100U is always required. When
installing the piping, follow the instructions in the installation manual
that comes with the kit.
•
Only proceed with piping work after considering the limitations on
installing listed here and in the chapter 8.2. Connecting the refriger-
ant piping on page 14 always referring to the installation manual
delivered with the kit.
8 .2 .5 .
Possible installation patterns and configurations
•
The piping between the outdoor units must be routed level or
slightly upward to avoid the risk of oil retention into the piping.
Pattern 1
Pattern 2
2
1
1
2
1
2
2
1
1 To indoor units
2 Piping between outdoor units
Prohibited patterns:
change to pattern 1 or 2
1
2
2
1
1
To indoor units
2
Piping between outdoor units
•
To avoid the risk of oil retention to the outmost outdoor unit, always
connect the stop valve and the piping between outdoor units as
shown in the 4 correct possibilities of the figure below.
Prohibited patterns:
change to pattern 1 or 2
1
2
2
1
2
2
1
To indoor units
2
Oil collects to the outmost outdoor units
Change to configuration as in figure below
1
2
1
2
1
2
1
To indoor units
2
Oil collects to the outmost outdoor units
Correct configuration
1
1
1
8 in
. (200 mm)
1
To indoor units
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