11
3P362438-1B English
INFORMATION
Maximum 8 branches can be connected to a header.
•
How to choose an outdoor multi connection piping kit (needed if the
outdoor unit capacity type is 192 or more). Choose from the follow-
ing table in accordance with the number of outdoor units.
Number of outdoor units
Branch kit name
2
BHFP22P100U
3
BHFP22P151U
7 .5 .
System piping (length) limitations
7 .5 .1 . Piping length restrictions
Make sure to perform the piping installation within the range of the
maximum allowable pipe length, allowable height difference and al
-
lowable length after branching as indicated below. 3 patterns will be
discussed, including VRV indoor units combined with Mini-split indoor
units.
Definitions
Actual piping length: pipe length between outdoor
(1)
and indoor units.
Equivalent piping length: pipe length between outdoor
(1)
and indoor
units. (Assume equivalent piping length of refnet joint = 1.6 ft. (0.5 m)
and refnet header = 3.3 ft. (1 m) (for calculation purposes of equivalent
piping length, not for refrigerant charge calculations).)
Total piping length: total piping length from the outdoor
(1)
to all indoor
units.
(1) If the system capacity type is > 168, the distance will be
from the first outdoor unit branch to indoor units.
