En-6
Case 2: For polar 3 wire
Modify the cable as per below methods.
Use a tool to cut off the terminal on the end of the remote controller
cable, and then remove the insulation from the cut end of the cable
as shown in Fig. 1.
Connect the remote controller cable and connecting cable as shown
in Fig. 2.
Be sure to insulate the connection between the cables.
Fig. 1
Fig. 2
Remote
controller cable
White
Red
Red
White
Connector
Black
Black
Insulated
connection
Connecting
cable
Connect the remote controller cable to the connecting cable, and insert
it to the connector.
PCB
Connecting cable
Connector
Terminal block
to outdoor unit /
power supply
Remote controller cable
Indoor unit
(2)
When connecting to the exclusive terminal block
Connect the end of remote controller cable directly to the exclusive
terminal block.
Connect all the wires to the exclusive terminal block regardless of be-
ing non-polar 2 wire or polar 3 wire.
If there is the 2WIRE/3WIRE switch on the PC board of the indoor
unit, set it to match the connection method of the connected remote
controller cable.
Example) Connection of non-polar 2 wire
* Layout of terminal block and
PC board is varies, depending
on the type of indoor unit.
Terminal block
Functional earth-
ing (If necessary)
Remote controller
cable
Set to "2WIRE" the
DIP switch (SW1)
Indoor unit
PC board
8. CIRCUIT BOARD SETTING
Set network convertor rotary switch SET1, and DIP switch SET2, SET3
(1) [Rotary switch-SET1] set the refrigerant circuit address
A single network convertor is considered as a single refrigerant system,
irrespective of the number of connected single models.
In the case of multiple refrigerant system, set SET1 (×10) and SET1 (×1)
as shown in the following table for each Network convertor.
Example: When SET1 (×10) is set to “2” and SET1 (×1) is set to “0”, the
refrigerant circuit address will be “20”.
Refrigerant
circuit
address
Rotary
Switch Setting
Refrigerant
circuit
address
Rotary
Switch Setting
SET1 (×10) SET1 (×1)
SET1 (×10) SET1 (×1)
0
0
0
11
1
1
1
0
1
12
1
2
2
0
2
13
1
3
3
0
3
14
1
4
4
0
4
15
1
5
5
0
5
16
1
6
6
0
6
17
1
7
7
0
7
8
0
8
9
0
9
98
9
8
10
1
0
99
9
9
(
: Factory setting)
(2) Termination resistance setting SW (SET2-1) “Default: OFF”
Set to “ON” when there is no termination resistance in the network seg-
ment.
(3) Remote controller 2WIRE/3WIRE switching SW (SET3)
“Default: 2WIRE”
Match with the setting of the used indoor unit.
Set matched with the connection method of the remote controller cable to
be connected.
(4) Unused SW
SET2-2 to 4: Not used
All Default settings: “OFF”
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