Wiring Method; Unit Wiring - Fujitsu UTY-TERX Installation Manual

5. 1.

Wiring method

Indoor unit (VRF/
single/multi)
This product
Wired remote
controller
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
UTY-R * R *
UTB- * UD
UTY-R * N **
* *
UTY-R K
UTB- * UB
UTB- * PB
UTB- * RA
( * arbitrary character)
[Example of connecting single split type indoor unit in a parallel arrange-
ment]
Case 1: For non-polar 2 wire
External input
En-3
Wired remote External input
controller cable
Card key
Window switch
RC number
**
AR-WEC
AR-WFA **
AR-WFB **
AR-WFC ** Non-polar 2 wire
AR-WFD **
AR-WGA **
**
AR-WGB
AR-6TC ** Polar 3 wire
AR-WAE **
**
AR-WAF
AR-WBE **
Polar 3 wire
AR-WBF **
AR-WDC **
AR-WDD **
**
AR-WAA
AR-WAC **
AR-WBA **
AR-WBB **
Polar 3 wire
AR-WBC **
AR-WBD **
AR-WBE **
AR-WBF **
AR-3TA ** Polar 3 wire
Polar 3 wire
AR-3SA **
Polar 3 wire
AR-3SA **
Wired remote
controller or exter-
nal switch control-
Indoor unit
ler controller
Max. 16 units
Max. 1 unit
This product
Case 2: For polar 3 wire
External input
cable
*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.
Type
5. 2.

Unit wiring

5. 2. 1
Remote controller cable
For 2-wire type
Shielded cable
(no sheath)
External input cable
Tighten the terminal screws to the specifi ed torques, otherwise,
abnormal overheating may be occurred and possibly cause heavy
damage inside the unit.
M3 screw
(Remote controller / Y1, Y2, Y3)
(External input / EXIN1, EXIN2)
Wired remote
controller or exter-
nal switch control-
ler controller
Max. 1 unit
This product
Multi system
External input cable and Remote controller
cable
For 3-wire type
25 mm (1 in)
25 mm (1 in)
35 mm (1-3/8 in)
Shielded cable
(no sheath)
25 mm (1 in)
WARNING
Tightening torque
Indoor unit
Max. 16 units
Single
Split
25 mm (1 in)
25 mm (1 in)
35 mm (1-3/8 in)
0.5 to 0.6 N·m
(4.4 to 5.3 lbf·in)
(5 to 6 kgf·cm)