Mitsubishi Heavy Industries FDTCVA SERIES Technical Manual page 93

Double-twin type
Outdoor unit Indoor unit
rd
rc
rb
ra
A
r1 rA rA
L
rB
rC
r2
In the illustration the L is main piping and ra,rb,rc, andrd are branch piping.
(1) When the capacity of the indoor unit to be connected is 151, 201 and 251 or less, be sure to use a pipe diameter
Request
of ø9.52 for the size of the liquid piping of branch piping (between branch and indoor units). (for double-twin
only) For connections to indoor units (liquid piping side dia. ø6.35) use the different diameter adapter coupling
that is included in the branch piping kit.
(2) For the branch be sure to select the specified branch pipe set (sold separately) and then to follow the direc-
tions of the instruction manual included in the branch pipe set when installing the piping. Be sure to install
the branch piping so that the branch is level.
B
C
D
rD
Models 802, 1002
One-way pipe length (m) L +ra
Branch pipe length (m)
Difference in height between indoor units (m) h1=0.5 or less, h2=0.5 or less
70, L +rb
10, Ira – rc I
Ira –rb I
10, Irb – rd I
Ira –rdI
ra 30, rb 30, rc
rA +rB 15, rC +rD
92
- -
70, L +rc 70, L +rd
10, Irb – rc I
10, Irc – rd I
30, rd
30
15
h3=0.5 or less, h4=0.5 or less
h5=0.5 or less, h6=0.5 or less
70
10
10