Toshiba SUPER MODULAR MULTI HFC R-410A - Manual (Page 5)

5
• Non-polarized control wiring between
outdoor and indoor units
• Wiring diagnosis system
Use the switches on the micro
processor PCB of the outdoor unit.
• Detects wiring to the indoor unit a4
which should not be in system A.
• b4 is missing in system B.
Outdoor unit
Indoor unit
Indoor unit
Outdoor unit
Outdoor unit
Wiring
Piping
A
system
B
system
Allowable pipe length:
175 m equivalent length
Outdoor unit
From 1st branching to the
farthest indoor unit: 65 m
H
ei
gh
t d
iff
er
en
ce
b
et
w
ee
n
in
do
or
u
ni
ts
: 3
0
m
H
ei
gh
t d
iff
er
en
ce
b
et
w
ee
n
in
do
or
a
nd
o
ut
do
or
u
ni
t:
50
m
1st branching
section
8F
7F
1F
2F