13
Ceiling type (RAV-SM
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4CT
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, RAV-SM
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1CT-4C)
No.
1
2
3
Procedure
Using board installing spacer (A), install “1 : 1 Model” Connection Interface board to the position of electric parts box of
the indoor unit. (See the figure below.)
Using terminal block fixing screws, install U3, U4 terminal block to the position of electric parts box of the indoor unit.
(See the figure below.)
• When tightening the screws, be sure not to damage wires.
• Adhere the attached nameplate near the relay terminal block.
Connect the relay wire (A) from U3, U4 terminal block to CN40 (Blue) of “1 : 1 Model” Connection Interface board.
Connect the relay wire (B) from CN50 (White) on the indoor P.C. board to CN51 (Red) on “1 : 1 Model” Connection
Interface board.
Details
Indoor control P.C. board
Relay wire (A)
Relay wire (B)
CN050 (White)
CN51
(Red)
CN40
(Blue)
U3, U4 terminal
block for connection
1:1 model connection interface board
Spacer (A)
• Relay wire (A)
Connect U3, U4 terminal block with “1 : 1 Model” Connection Interface CN40 (Blue). There is no polarity for wire
connection.
• Relay wire (B)
Connect CN50 (White) on indoor control P.C. board with CN51 (Red) on “1 : 1 Model” Connection Interface board.
• When installing “1 : 1 Model” Connection Interface board to electric parts box, insert three board installing spacers (A)
into holes of P.C. board.
CAUTION
After connection of the relay wires (A) and (B), bind them with banding band so that wires are not caught in. In this
time, be sure not to bind the relay wires (A) and (B) together with the power supply lines such as power cable,
earth wire, etc.; otherwise a trouble may be caused.