Connecting To The Remote Controller; Locally Procured Wiring; Examples Of Usage; Wiring Restrictions - Mitsubishi Electric PAC-SA89TA-E Instruction Manual

3. Connecting to the Remote Controller

1. Connect to the connector CN2 on the Remote controller board.
2. Press the connector for the Timer Adapter into the CN2 connector.
The connector can only be connected in one direction only. Do not force the connection.

4. Locally Procured Wiring

With the Timer Adapter, variations of connection method with the locally installed circuit will
provide different types of operating configurations.
Example: External timer operation, remote control operation
1. Basic Connection Method
SW1 - Operating switch
Performs operation/stopping of indoor unit.
SW2 - Selecting switch
For selecting whether the operation/stopping is to be performed by external circuit or
remote control.*
* Also includes system controller (central controller).
2. Switch Settings (Refer to table at right for details.)
SW2 - If on.
• Operation/stopping cannot be controlled from
remote controller.
Other operations (such as temperature settings
and changing fan speed) can be performed.
• Operation/stopping can be performed by SW1.

5. Examples of Usage

In either case, there is a 5 to 6 second delay from the time when the operating command is sent until the unit operates.
1. To perform operation/stopping by only remote operation or external timer and to prohibit operation/stopping by the remote controller, use the
following circuits.
SW1
Local wiring
For remote operation
2. To perform operation/stopping by remote operation or external timer and allow operation/stopping by the remote controller, use the following
circuits.
SW1
SW2
Local wiring
For remote operation
3. To start operation by remote operation and then freely use remote controller, use the following circuit.
Local wiring
4. To permit/prohibit the use of the remote controller by an external circuit.

6. Wiring Restrictions

Keep the length of wire from the circuit board of the indoor unit within 10 meters (32ft). Excessive length could cause improper operation.
Use a transit relay when extending wiring such as remote wiring.
Remote controller board
Orange
Red
CN2
Brown
Remote controller board
Orange
Red
CN2
Brown
Remote controller board
Orange
Red
CN2
SW2
Brown
Since this is not used,
be sure to completely
wrap with insulation tape
SW1
Power supply
SW2
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Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V.
SW2 - If off.
• Operations can be performed from
remote controller.
• Operation/stopping cannot be
performed by SW1.
Power supply for
external timer
Power supply for
external timer
Use a momentary switch (a switch that is turned on manually and
turns off automatically) for SW2.
Press SW2 (for 1 second or more) and the operation starts. After
this, the remote controller can be used for operations.
Orange
Red
SW2
Brown
Local wiring
X1
X1
X2
X2
Local wiring
HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.
CN2
Orange
SW1
Red
SW2
Brown
Local wiring
Remote Cannot perform
controller operation/stopping
ON Operation
SW1
OFF Stopping
Orange
T
T
Red
Brown
Local wiring
For remote timer operation
Orange
T
T
SW2
Brown
Local wiring
For remote timer operation
Remote controller board
If SW2 is on, operation cannot be performed
by the remote controller.
CN2
If SW2 is off, operation is permited.
Remote controller board
Orange
Red
CN2
Brown
Remote controller
board
CN2
SW2
ON OFF
Can perform
operation/stopping
Cannot perform
operation/stopping
Remote controller board
CN2
Remote controller board
Red
CN2
WT02540X03