English
19
3. When including BS unit
[PRECAUTIONS]
1.
All transmission wiring except for the remote controller wires is polarized and must match the terminal
symbol.
2.
A single switch can be used to supply power to units on the same system. However, branch switched and
branch circuit breakers must be selected carefully.
3.
Do not connect the ground wire to gas or water pipes, lightning rods or telephone ground wires. Incom-
plete grounding may result in electric shocks.
9-3
CONTROL BY 2 REMOTE CONTROLLERS (CONTROLLING 1 INDOOR UNIT BY 2
REMOTE CONTROLLERS)
• When using 2 remote controllers, one must be set to “MAIN” and the other to “SUB”.
MAIN/SUB CHANGEOVER
(1)
Insert a
screwdriver into the recess between the upper and lower part of remote controller and, work-
ing from the 2 positions, pry off the upper part. (The remote controller PC board is attached to the upper
part of remote controller.)
(Refer to Fig. 33)
(2)
Turn the
main/sub changeover
switch on one of the two remote controller PC boards to “S”. (Leave the
switch of the other remote controller set to “M”.)
(Refer to Fig. 34)
Wiring Method
(See “ELECTRIC WIRING WORK”)
(3)
Remove the control box lid.
(4) Add remote controller 2 to the terminal block for remote controller (P
1
, P
2
) in the control box.
(There is no polarity.) (Refer to Fig. 31 and Table 8-3)
IN/D OUT/D
F
1
F
2
F
1
F
2
IN/D
OUT/D
F
1
F
2
F
1
F
2
L N
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
BS unit
No. 3
System
Outdoor unit
Indoor unit A
Most
downstream
indoor unit
Fig. 32
Control box
Control box
IN/D
OUT/D
F
1
F
2
F
1
F
2
BS unit
Control box
P
1
P
2
P
1
P
2
F
1
F
2
T
1
T
2
L N
L N
Power supply
220-240V
50Hz
or
220V
60Hz
Upper part of
remote controller
Lower part of
remote controller
Insert the screwdriver
here and gently work
off the upper part of
remote controller.
Fig. 33
M
S
M
S
Remote
controller
PC board
(Factory setting)
(Only one remote
controller needs
to be changed if
factory settings
have remained
untouched.)
Fig. 34
01_EN_3P184443-5S.fm Page 19 Friday, October 16, 2015 6:44 PM
