14
When multiple indoor units are served by a single
outdoor unit, the refrigerant piping must be connect
-
ed using either individual branch pipes or four-port
header kits. Optional branch pipes V8IDBP01 and
V8IDBP02, and header kits V8HDRK04 are ordered
separately.
Refer to the instruction manual for detailed installa-
tion instructions for each.
The header kits can be used to connect a maximum
of four indoor units to the outdoor unit. When the sys-
tem includes five, six, seven, or eight indoor units,
two four-port header kits must be used. When the
system includes nine indoor units, two header kits
and a branch joint is used.
When using branch pipes to connect multiple indoor
units with a single outdoor unit, each indoor unit re
-
quires a separate branch pipe to connect both the
liquid and gas (vapor) line to the system. Install these
optional devices per the installation instructions pro-
vided with them. See the piping schematics on the
following pages.
V8HDRK04
Figure 17. Connection to Header Pipe Kit
Provide 24 to 36 inches of straight pipe before and
after each header pipe kit to avoid creating refriger-
ant turbulence and flash points.
Figure 18. 24 to 36” of Straight Pipe Before and After Header Pipe Kit
Failure to follow 24 inch minimum guideline can lead
to reduced capacity and equipment damage.
Support piping on both sides of the header kit.
To
Indoor
Unit
>24 in. (610 mm) required
>36 in. (914 mm) preferred
before the
first elbow or
branch pipe conection
From Outdoor Unit
>24 in. (610 mm) required
>36 in. (914 mm) preferred
before the
first elbow
To
Indoor
Unit
To
Indoor
Unit
To
Indoor
Unit
