Mitsubishi Electric PKH18FK1 Technical & Service Manual page 57

6. MULTIPLE REMOTE CONTROL DISPLAY
You can control several units by a multiple remote control display, if you
wire an optional multiple display adapter (PAC-725AD) with relays and
lamps on the market.
6-1 How to wire
(1) Connect the multiple display adapter to the connector CN51 on the
indoor controller board.
(2) Wire three of the five wires from the multiple display adapter as shown
in the below figure.
<Wiring >
GREEN
5
CN51
YELLOW
ORANGE
1
connector(5P)
RED
BROWN
Optional multiple display
adapter
The maximum distance between
indoor board and relay is 33 feet.
<System>
3wires
Power
3wires
supply
3wires
No.1 unit
2wires
Remote
controller
cable
Multiple remote control
ON-OFF display Remote
controller
(Field supply)
(Operation check)
<Wiring diagram>
RL-1
Power
GL-1
supply
RL-2
GL-2
RL-3
GL-3
Multiple Remote Control Display
X1
X1
X2
X2
Electrical insulation is needed.
Wiring at the actual place
No.2 unit
Relay box
(Field supply)
Remote Remote
controller controller
X1-1
X2-1
X1-2
X2-2
X1-3
X2-3
OC193-55
RL
GL
Power
supply
[Notes on Signs]
X1:Relay (for check lamp)
X2:Relay (for operation lamp)
RL:Check Lamp
GL:Operation Lamp
[Field supplied parts]
Relays:12V DC with rated coil power con-
No.3 unit
Lamps:Matching to power supply voltage.
X1
X2
X1
X2
X1
X2
Relay box
Indoor controller board
CN51
sumption below 0.9W.
Multiple remote
controller adapter
1
No.1 unit
5
1
No.2 unit
5
1
No.3 unit
connect to
5
the connector CN51