2
2
- 21
Design of Mini ECO-i SYSTEM
2. System Design
2-13. Installing Distribution Joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION
JOINT” enclosed with the optional distribution
joint kit (APR-RP160AG).
(2) In order to prevent accumulation of refrigerant oil in
stopped units, if the main tubing is horizontal then
each branch tubing length should be at an angle
that is greater than horizontal. If the main tubing is
vertical, provide a raised starting portion for each
branch.
(3) If there are height differences between indoor units
or if branch tubing that follows a distribution joint is
connected to only 1 unit, a trap or ball valve must
be added to that distribution joint. (When adding
the ball valve, locate it within 40 cm of the
distribution joint.)
(Consult with SANYO separately concerning the
ball valve.)
If a trap or ball valve is not added, do not operate
the system before repairs to a malfunctioning
unit are completed. (The refrigerant oil sent
through the tubing to the malfunctioning unit will
accumulate and may damage the compressor.)
15 to 30
°
B
A
B
A
Tube branching
methods
(horizontal use)
Arrow view
Horizontal
line
View as seen
from arrow
Ball valve
(BV: p
u
rcha
s
ed
s
eparately)
Mai
n
t
u
bi
ng
Type
s
of vertical trap
s
pecificatio
ns
(If o
n
ly 1
un
it i
s
co
nn
ected, a ball
valve i
s
al
s
o
n
eeded o
n
thi
s
s
ide.)
I
n
door
un
it (1)
(When not u
s
in
g
b
all valve)
(When u
s
in
g
b
all valve)
Bra
n
ch t
u
bi
ng
i
s
directed
u
pward.
(Each
un
it i
s
co
nn
ected to t
u
bi
ng
that i
s
either level or
i
s
directed
dow
n
ward.)
Mai
n
t
u
bi
ng
I
n
door
un
it
More tha
n
20 cm
I
n
door
un
it (more tha
n
2
un
it
s
)
Horizo
n
tal
I
n
door
un
it i
s
directed dow
n
ward
06-405 Mini-ECOi_TD2 11/6/06 5:14 PM Page 21
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