NOTE1 : Install the relay box where you can be serviced it easily.

NOTE2 : For control circuit wiring, use a wire of No. 14 AWG or a control cable according to the power supply of control circuit.

NOTE3 : When the power supply of the control circuit is 208/230V AC,

Do not connect the control circuit wire to the remote controller cable directly.

Do not place the control circuit wire and the remote controller cable into the same conduit tube.

4-2 Basic wiring

Caution : Before starting all units simultaneously by the remote ON-OFF switch, be sure to connect a sequence-start timer into the remote ON-OFF circuit. Otherwise, a rush of starting current may damage the power supply.

 

Remote

 

 

 

Power￿

ON/OFF￿

No.1 unit

 

No.2 unit

switch

relay box

 

relay box

 

 

 

SW1

 

 

 

supply

 

 

 

 

 

 

 

 

SW2

 

 

 

Glow switch or pilot lamp can be

T

 

T

combined to easily identify the￿

X2

 

X2

on-off mode of SW1 and SW2.

T

 

T

 

To￿

To￿

 

 

 

 

No.1￿

X2

No.2￿

X2

 

unit

 

unit

 

Next unit

 

 

 

 

Remote controller

 

 

Timer adapter cables

4-3 Switch function of remote ON-OFF switch

 

 

 

 

 

 

 

 

 

 

 

 

 

SW2

 

 

(Switches between remote ON-OFF and individual control)

 

 

 

 

 

 

 

 

ON

 

 

OFF

 

 

(Remote ON-OFF control)

 

(Individual control)

 

 

 

 

 

 

SW1

ON

All units start together.

w1

 

Each unit can be controlled by each

(Start)

Individual control is not available.

 

(Switches between

 

remote controller.

OFF

All units stop together.

w2

 

remote ON and OFF.)

 

Remote ON-OFF switch is not available.

(Stop)

Individual control is not available.

 

 

 

 

 

 

 

 

 

 

w1After all units start together, if SW2 is turned OFF, each unit can be individually stopped by each remote controller. w2After all units stop together, if SW2 is turned OFF, each unit can be individually started by each remote controller.

5. INDIVIDUAL CONTROL BY GROUPING THE REMOTE CONTROLLERS

Grouping the remote controllers allows individual control and cen- tralize monitoring of units installed in different places without a spe- cial control board.

Remote control cables are extendible up to 550 yards When the cable length exceeds 33ft, use the double-insulated two-care cable such as Belden 9407. Also, the cable thickness must be No. 22 AWG or above.

When gathering the power ON/OFF switches of air conditioners near the remote controllers, you should also install the power ON/OFF switch near each unit to prevent electric trouble during servicing.

Remote￿

controller cable (2-core)

Remote controller

OC194-53

Page 53
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Mitsubishi Electronics PL24FK21, PL42FK21 OC194-53, Individual Control by Grouping the Remote Controllers, Basic wiring

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