Mitsubishi Electric Mr.SLIM PKH-1.6FKA Technical & Service Manual page 67

3. REMOTE ON-OFF AND INDIVIDUAL REMOTE CONTROLS
This method is available to control one unit or any number of units.
The following operations are available by connecting a relay, a timer adapter (PAC-SA89TA-E), and a remote ON/OFF switch
to the system. Timer adapter is an optional part. Other parts are available on the market.
(A) To start all units in order by remote ON-OFF switch
(B) To stop all units simultaneously by remote ON-OFF switch
(C) To switch between the remote ON-OFF control and the individual remote control
3-1 System
Figure 6 shows the case of three units.The same is the case with any number of units.
Figure 6
power supply of
control circuit
2-wire
remote
controller
cable
Remote
ON/OFF
switch
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 220/240V 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.
3-2 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.
Glow switch or pilot lamp can be
combined to easily identify the
on-off mode of SW1 and SW2.
Relay box
Timer adapter cables
Remote
controller
Remote
ON/OFF
switch
Power
SW
1
supply
SW
2
To
No.1
unit
No.1 unit No.2 unit
relay box relay box
T T
X X
2
T T
To
No.2
X X
2
unit
Remote controller
Timer adapter cables
67
Next unit
2
2
Timer adapter
PAC-SA89TA-E