MCAC-UTSM-201503                                 R410A Full DC Inverter Split Duct Type Technical Manual 
60 
For fixing on the 86 electrician box. 
Switching wires for signal receiving 
board 
For connecting the signal receiving board and 
4-core shield wire. 
Switching wires for wired controller 
signal 
(If needed) For connecting the main control panel 
and 4-core shielding wire. 
 
3) Supplied assemblies on the site 
Specification (Only 
for reference) 
Wiring  tube  (Insulating  sleeve 
and tightening screw.) 
 
4) Installation procedure 
  The installation manual contains information about the procedure of installing wired 
controller. Please refer to indoor unit installation manual for connecting between wired 
controller and indoor unit. 
  Circuit of wired controller is low voltage circuit. Never connect it with a standard 220V or 
380V circuit or put it into a same wiring tube with the circuit. 
  The shield cable must be connected stable to the ground, or transmission may fail. 
  Don not attempt to extend the shield cable by cutting, if it is necessary, use terminal 
connection block to connect. 
  After finishing connection, do not use mugger to have the insulation check to the signal wire. 
  Wired remote controller structure size figure ( Unit: mm):