En-10
Wiring arrangement
In following figure, all the possible connectors are connected for description.
In actual installation, you cannot connect all the connectors at once.
Drain pump
unit cable
(connect to
CNA05)
Drain pump unit cable
(connect to CN106)
Cable tie (*1)
Cable tie (medium)
(accessories) (*2)
Cable tie (locally purchased) (*3)
Optional parts cables
Cable tie
EMI core (accessory of
the IR receiver unit)
Knockout
hole (*4)
*1: Accessories of the drain pump unit. Bind the drain pump unit cable (connect to
CN106), power supply cable and earth (ground) cable.
*2: Bind the drain pump unit cable (connect to CNA05), remote controller cable and
Transmission cable.
*3: Bind the optional parts cables. Separate the these cables from the power supply
cable and earth (ground) cable as much as possible.
*4: To protect the cable insulation after opening a knockout hole, remove any burrs from
the edge of the hole.
• To prevent entry of insects and small animals, fill the holes and gaps through the cable
with putty.
6.6. External input and external output (optional parts)
6.6.1. External input
• Indoor unit can be Operation/Stop or Emergency stop or Forced stop by using indoor
unit PCB CNA01 or CNA02.
• “Start/Stop” mode or “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]).
(*a)
(*b)
(*1)
CNA01
CNA03
(*a)
(*a)
Input
d
ev
ic
e 1
Input
d
ev
ic
e 2
Input
d
ev
ic
e 3
Load
resistance
Load
resistance
Load
resistance
DC power supply
12 to 24 V
Connected unit
P.C.B
*1: Make the power supply DC 12 to 24 V. Select a power supply capacity with an ample
surplus for the connected load.
Do not impress a voltage exceeding 24 V across pins 1-2, and 1-3.
*a: The allowable current is DC 5 mA to 10 mA. (Recommended: DC 5 mA)
Provide a load resistance such that the current becomes DC 10 mA or less.
Select very low current use contacts (usable at DC 12 V, DC 1 mA 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.
CNA01
CNA01
CNA01
DC power supply
12 to 24 V
Connected unit
Load resis-
tance
P.C.B
P.C.B
P.C.B
Input
d
ev
ic
e 1
Input
d
ev
ic
e 2
In
d
o
o
r u
n
it
In
d
o
o
r u
n
it
In
d
o
o
r u
n
it
Load resis-
tance
● 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]).
(*c)
(*c)
(*c)
(*d)
CNA02
CNA04
P.C.B
GND
Ch 1
Ch 3
Ch 2
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 sufficiently 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.
K1
CNA02
CNA02
CNA02
K2
K3
K4
K5
K6
P
o
w
e
r s
u
p
p
ly f
o
r r
e
lay
In
d
o
o
r u
n
it
In
d
o
o
r u
n
it
In
d
o
o
r u
n
it
Input device 2
Input device 1
K1 - K6: Relay
(Device for DC Current)
P.C.B
P.C.B
P.C.B
NOTE:
When connected to multiple indoor units directly, it will cause breakdown.
9373385264-02_IM_L3.indb Sec1:10
9373385264-02_IM_L3.indb Sec1:10
9/24/2019 11:06:30 AM
9/24/2019 11:06:30 AM
