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No. 3 system: When including BS unit
Power supply
single phase
Outdoor unit
60Hz 208/230V
L
L
1
2
IN/D
F
F
1
2
L
L
P
P
1
2
1
2
Indoor unit A
Remote controller
[ PRECAUTIONS ]
1. Do not ground the equipment on gas pipes, water pipes or
lightning rods, or crossground with telephones. Improper
grounding could result in electric shock.
2. The remote controller wiring (P1 and P2) and transmission
wiring (F1 and F2) have no polarity.
NOTE
This equipment can be installed with a Ground-Fault Circuit
Interrupter (GFCI). Although this is a recognized measure for
additional protection, with the grounding system in North Amer-
ica, a dedicated GFCI is not necessary.
10-3 COMPUTERISED CONTROL (FORCED OFF
AND ON/OFF OPERATION)
(1) Wire specifications and how to perform wiring
• Connect the external input to terminals T1 and T2 of the
terminal block for remote controller.
F2
T1
FORCED
OFF
Wire specification
Sheathed vinyl cord or cable (2-wire)
Gauge
AWG18-16
Length
Max. 328 ft. (100 mm)
Contact that can ensure the minimum appli-
External terminal
cable load of 15 V DC, 1 mA.
(2) Actuation
• The following table explains FORCED OFF and ON/OFF
OPERATIONS in response to Input A.
FORCED OFF
Input ON stops operation (impossible by
remote controllers.)
Input OFF enables control by remote con-
troller.
14
BS unit
OUT/D
OUT/D
IN/D
F
F
F
F
F
F
1
2
1
1
2
2
F
F
T T
1
2
1
2
P
P
1
2
(option)
T2
Input A
ON/OFF OPERATION
Input OFF ON turns
ON unit.
Input ON OFF turns
OFF unit.
(3) How to select FORCED OFF and ON/OFF OPERATION
• Turn the power on and then use the remote controller to
select operation.
10-4 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.
(Refer to 11. FIELD SETTING)
11. FIELD SETTING
CAUTION
When performing field setting or test run without attaching
the decoration panel, do not touch the drain pump. This
may cause electric shock.
• Check that the outdoor unit has been wired properly.
1. Make sure the control box cover is closed on the indoor
and outdoor units.
2. Field settings must be made from the remote controller
and in accordance with installation conditions.
• Settings can be made by changing the "Mode No.",
"FIRST CODE NO." and "SECOND CODE NO.".
• The "Field Settings" included with the remote control lists
the order of the settings and method of operation.
Setting is made in all units in a group. To set for individual
indoor units or to check the setting, use the mode No.
(with "2" in upper digit) in parentheses ( ).
FIRST CODE NO.
SECOND CODE NO.
With Wireless Remote Controller Used
Set the wireless remote controller address before using the
wireless remote controller.
For the setting method of the address, refer to the operation
manual provided with the wireless remote controller.
NOTE
• A MODE NO. is set on a group basis. To make a mode setting
on a room unit basis or check the setting made, however, set
the corresponding mode number in the parentheses.
1. Settings for Optional Accessories
• In the case of connecting optional accessories, refer to
the operation manuals provided with the optional acces-
sories and make necessary settings.
2. External Static Pressure Settings
Make settings in either method (a) or method (b) as
explained below.
(a) Use the airflow auto adjustment function to make settings.
Airflow auto adjustment: The volume of blow-off air is
automatically adjusted to the rated quantity.
FIELD SET MODE
MODE NO.
English
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