System Piping (Length) Limitations - Daikin RXYQ72TATJU Installation Manual

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
2
3
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
Equivalent piping length: pipe length between outdoor
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
units.
(1) If the system capacity type is > 168, the distance will be
from the first outdoor unit branch to indoor units.
11
Branch kit name
BHFP22P100U
BHFP22P151U
and indoor units.
(1)
and indoor
(1)
(1) to all indoor
3P362438-7J English