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8.2.3 Electrical Wiring for Indoor Unit
Refer to the “Installation and Maintenance Manual” for the outdoor unit for details on the electrical wiring
capacity for the outdoor unit. Setting DIP switches may be required, depending on the combination with the
outdoor unit.
(2) Connect the communication cables between the indoor unit and the outdoor unit correctly.
Prevent damage to components by ensuring that the terminal for power supply wiring (Terminals “L1”
to “L1” and “L2” to “L2” for each terminal block: AC208/230V) between the indoor unit and the outdoor
unit correspond correctly.
Connect ground wiring to the terminals in the electrical box.
(3) Use 2-conductor, AWG18 (0.82mm
2
), stranded, copper cable for the communication cable between the
outdoor unit and the indoor units. They are connected to terminals 1 and 2 of the terminal block TB2.
The controller cable is connected to terminals A and B of each indoor unit terminal block TB2.
(4) Confirm that the total cable length does not exceed 3281ft (1000m).
NOTE:
The total wiring length for the wired controller can be extended up to 1640ft (500m). If the total wiring
length is less than 98ft (30m), other cable can be used.
(1) Connect the power supply wirings (L1 and L2) to the terminal block TB1 correctly.
In Case of Using an Optional Wired Controller or Optional Receiver Kit
The following setting is required when the optional wired controller
or the optional receiver kit is used.
•
The setting before shipment is “WIRELESS”. Set SW2 to “WIRED”.
If not, the operation is not available.
•
Connect the controller cables to the terminals A and B at the terminal block TB2.
In Case of Using an Optional Wireless Controller
•
The SW2 switch setting is NOT required when the wireless controller is used with the receiver built into
the indoor unit. However, the multiple indoor unit operation is not available when this wireless controller is
used with the receiver built into the indoor unit. If the multiple indoor unit's operation is required with this
wireless controller, use the Optional Receiver Kit.
•
If there are two indoor units installed close to each other, the wireless controller may not distinguish the
units. Use the function “Identifying Indoor Units Installed Side by Side”, and the wireless controller should
be set to “B mode”. (Refer to the “Installation and Maintenance Manual” for the wireless controller about
the “B mode” setting.)
A
B
1
2
L1
Controller
Line
Communication
Line
Power Supply Line
TB2
TB1
L2
WIRED
WIRELESS
SW2
DIP Switch PCB
Change to “WIRED” .
NOTICE
Summary of Contents for TIWM006B22S
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