En-3
Case 2: For polar 3 wire
Max. 16 units
This product
Indoor unit
Wired remote
controller or exter-
nal switch control-
ler controller
Max. 1 unit
External
input
*1. Up to 16 indoor units may be controlled with a single external switch
controller, however multiple indoor units connected to the external
switch controller are generally required to have the same operation
setting.
*2. Two or more types of VRF1 system, VRF2 system, single model or
multi systems cannot be mixed together.
Multi system
Single
Split
5. 2.
Unit wiring
5. 2. 1 External input cable and Remote controller
cable
Remote controller cable
For 2-wire type
For 3-wire type
Shielded cable
(no sheath)
Shielded cable
(no sheath)
25 mm (1 in)
25 mm (1 in)
25 mm (1 in)
25 mm (1 in)
35 mm (1-3/8 in)
35 mm (1-3/8 in)
External input cable
25 mm (1 in)
WARNING
Tighten the terminal screws to the speci
fi
ed torques, otherwise,
abnormal overheating may be occurred and possibly cause heavy
damage inside the unit.
Tightening torque
M3 screw
(Remote controller / Y1, Y2, Y3)
(External input / EXIN1, EXIN2)
0.5 to 0.6 N·m
(4.4 to 5.3 lbf·in)
(5 to 6 kgf·cm)
5. 1.
Wiring method
Indoor unit (VRF/
single/multi)
Wired remote
controller
Wired remote
controller cable
This product
External input
cable
Card key
Window switch
Connectable types of indoor unit and remote controller
The wired remote controller shown in the table below can be connected.
The indoor unit that can be connected is the indoor unit that can con-
nect to following remote controller.
Model name
RC number
Type
UTY-R
*
R
*
AR-WEC
**
AR-WFA
**
AR-WFB
**
AR-WFC
**
AR-WFD
**
AR-WGA
**
AR-WGB
**
Non-polar 2 wire
UTB-
*
UD
AR-6TC
**
Polar 3 wire
UTY-R
*
N
**
AR-WAE
**
AR-WAF
**
AR-WBE
**
AR-WBF
**
AR-WDC
**
AR-WDD
**
Polar 3 wire
UTY-R
*
K
*
AR-WAA
**
AR-WAC
**
AR-WBA
**
AR-WBB
**
AR-WBC
**
AR-WBD
**
AR-WBE
**
AR-WBF
**
Polar 3 wire
UTB-
*
UB
AR-3TA
**
Polar 3 wire
UTB-
*
PB
AR-3SA
**
Polar 3 wire
UTB-
*
RA
AR-3SA
**
Polar 3 wire
(
*
arbitrary character)
[Example of connecting single split type indoor unit in a parallel arrange-
ment]
Case 1: For non-polar 2 wire
External
input
Max. 16 units
This product
Indoor unit
Wired remote
controller or exter-
nal switch control-
ler controller
Max. 1 unit
9374707157-02_IM.indb 3
9374707157-02_IM.indb 3
12/2/2016 5:22:44 PM
12/2/2016 5:22:44 PM
