10
English
9-3
WIRING EXAMPLE
An example of single-system wiring is shown here.
• Connect terminals F1 and F2 (the indoor-to-outdoor termi-
nals) in the switchbox of the outdoor unit to terminals F1 and
F2 (for the outdoor side) of the first BEV unit (1).
NOTE
• It is not necessary to designate indoor unit address when
using group control. The address is automatically set when
power is activated.
[ PRECAUTIONS ]
1. A single switch can be used to supply power to units on the
same system. However, branch switches and branch circuit
breakers must be selected carefully.
2. Do not ground the equipment on gas pipes, water pipes or
lightning rods, or crossground with telephones. Improper
grounding could result in electric shock.
9-4
CONTROL BY 2 REMOTE CONTROLLERS (Con-
trolling 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
screw driver into the recess between the
upper and lower part of remote controller and, working
from the 2 positions, pry off the upper part.
The remote controller PC board is attached to the upper
part of remote controller.
(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”.)
Wiring Method
(See ‘‘ELECTRIC WIRING WORK’’)
(3)
Remove the electric parts box lid
(4) Add remote control 2 (slave) to the terminal block for
remote controller (P
1
, P
2
) in the electric parts box.
(There is no polarity.) (Refer to Fig. 3 and 8-3.)
9-5 COMPUTERISED CONTROL (FORCED OFF
AND ON/OFF OPERATION)
(1) Wire specifications and how to perform wiring
• Connect input from outside to terminals T1 and T2 of the
terminal block for remote controller.
(2) Actuation
• The following table explains FORCED OFF and ON/OFF
OPERATIONS in response to Input A.
(3) How to select FORCED OFF and ON/OFF OPERATION
• Turn the power on and then use the remote controller to
select operation.
9-6
CENTRALIZED CONTROL
• For centralized control, it is necessary to designate the group
No. For details, refer to the manual of each optional control-
lers for centralized control.
F2
F1 F2 F1
A B C
IN/D OUT/D
F2
F1 F2
F1
Outdoor unit side Indoor unit side
F2
F1 F2
F1
Outdoor unit side Indoor unit side
Use two-conductor transmission
wirings (with no polarity).
Electric parts box 1
A B C
F1 F2
F1 F2
Indoor unit
Indoor unit
BEV unit 1
BEV unit 2
Do not open the cover of electric
parts box 2 (on the left-hand side),
which is not touched during the
installation work.
230V
16V
16V
16V
400V
B
B
Outdoor unit
BEV unit
Remote
controller
COOL/HEAT
selector
Indoor unit
Power supply
Power
supply
Earth leakage breaker
(used for ground fault,
overload, and short-circuit
protection)
B
Connect the line (with polarity-sensitive terminals)
so that the terminal signs coincide.
COOL/HEAT
selector
A1P
A5P
To outdoor unit
of another
refrigerant system
Electric
parts
box 2
Prohibited
Do not
connect
power supply
wirings by
any means.
Prohibited
Fig. 3
Upper part of
remote controller
Lower part of
remote controller
Insert the screwdriver here and gently work
off the upper part of remote controller.
Wire specification
Sheathed vinyl cord or cable (2 wire)
Gauge
0.75 - 1.25 mm
2
Length
Max. 100 m
External terminal
Contact that can ensure the minimum appli-
cable load of 15 V DC, 1 mA.
FORCED OFF
ON/OFF OPERA-
TION
Input “ON” stops operation (impossible by
remote controllers.)
Input OFF
→
ON
turns ON unit.
Input OFF enables control by remote con-
troller.
Input ON
→
OFF
turns OFF unit.
Only one remote
controller needs to be
changed if factory
settings have
remained untouched.
(Factory setting)
S
M
S
S
M
Remote controller
PC board
F2
T1
T2
FORCED
OFF
Input A
01_EN_3P233622-5F.fm Page 10 Thursday, December 18, 2008 4:21 PM
