En-10
(4) Wiring
* When there is 1 transmission cable or remote controller cable, fasten it the same way as
shown in the
fi
gure with a cable tie (medium).
CAUTION
When switching the DIP switch (SW1), be sure to turn off the power supply to the
indoor unit. Otherwise, the PC board of the indoor unit may be damaged.
Cable tie (Medium)
(Accessories)
Y1,Y2,Y3:
Remote controller cable
X1, X2:
Transmission cable
Conduit (L1,L2(N):
Power supply cable)
Lock nut
Earth (Ground)
DIP switch
(SW1)
For 2-wire type
Y1:Non-poler
Y2:Non-poler
Y3:Do not connect *1
2WIRE
(Factory setting)
For 3-wire type
Y1:Red
Y2:White
Y3:Black
3WIRE
Connect the remote
controller cable
Set the DIP switch
(SW1)
*1: If you connect the remote controller cable to the terminal Y3,
2-wire type remote controller does not work.
Fix the conduit with the supporters as shown below.
•
Conduit (Power supply cable)
Supporter
Indoor unit
30 in.
(756 mm)
or less
54 in.
(1,361 mm)
or less
54 in.
(1,361 mm)
or less
54 in.
(1,361 mm)
or less
]1
6.5. External input and external output (Optional
parts)
CAUTION
Do not operate any switches other than prescribed, as it can cause the unit to operate
improperly or malfunction.
Use an insulated screwdriver to set the DIP switches.
Controller PCB
Output terminal
(CNB01)
(CNA03)
(CNA04)
Dry contact terminal
(CNA01)
Apply voltage terminal
(CNA02)
DIP
switch
(SET 2)
OFF ON
SW1
SW2
SW3
SW4
(1) External input
• Indoor unit can be Operation/Stop, Emergency stop or Forced stop by using indoor unit
PCB CNA01 or CNA02.
• “Operation/Stop” mode, “Emergency stop” mode or “Forced stop” mode can be selected
with function setting of indoor unit.
• Indoor unit can be Forced thermostat off by using indoor unit PCB CNA03 or CNA04.
• A twisted pair cable (22 AWG) should be used. Maximum length of cable is 492 ft. (150 m).
• Use an external input and output cable with appropriate external dimension, depending
on the number of cables to be installed.
• The wire connection should be separate from the power cable line.
Input select
Use either one of these types of terminal according to the application. (Both types of
terminals cannot be used simultaneously.)
●
Apply voltage terminal ([CNA01], [CNA03])
When a power supply must be provided at the input device you want to connect, use the
Apply voltage terminal ([CNA01], [CNA03]).
Input
de
vic
e 1
Input
de
vic
e 2
Input
de
vic
e 3
Load
resistance
Load
resistance
Load
resistance
*1
DC power supply
12 to 24V
connected unit
*a
*a
*a
P.C.B
CNA01
CNA03
*b
*1 Make the power supply DC12 to 24V. Select a power supply capacity with an ample
surplus for the connected load.
Do not impress a voltage exceeding 24V across pins 1-2, and 1-3.
*a The allowable current is DC 5mA to 10mA. (Recommended: DC5mA)
Provide a load resistance such that the current becomes DC10mA or less.
Select very low current use contacts (usable at DC12V, DC1mA or less).
*b The polarity is [+] for pin 1 and [-] for pin 2 and 3. Connect correctly.
When connected to Apply voltage terminals of multiple indoor units with a connected unit,
be sure to make a branch outside the indoor unit using a pull box, etc. as shown on below
example.
DC power supply
12 to 24V
connected unit
Load
resistance
P.C.B
P.C.B
CNA01
P.C.B
Input
de
vic
e 1
Input
de
vic
e 2
Indo
or
unit
Indo
or
unit
Indo
or
unit
Load
resistance
CNA01
CNA01
●
Dry contact terminal ([CNA02], [CNA04])
When a power supply is unnecessary at the input device you want to connect, use the Dry
contact terminal ([CNA02], [CNA04]).
P.C.B
GND
Ch 1
Ch 3
*c
*c
*c
*d
Ch 2
CNA02
CNA04
connected unit
*c Select very low current use contacts (usable at DC12V, DC1mA or less).
*d The wiring is different from Apply voltage terminals. Be suf
fi
ciently careful when wiring.
When connected to Dry contact terminals of multiple indoor units with a connected unit,
insulate each indoor unit with relay, etc. as shown on below example.
9367701124-03_IM.indb Sec1:10
9367701124-03_IM.indb Sec1:10
2013-10-25 13:00:45
2013-10-25 13:00:45
