Carrier 40VK005S-7S-QEE Manual De Instalación Y Propietario página 26

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Electrical Wiring
High wall wired controller wiring instruction:
1. One wired controller controls one high wall unit (one to one), connect the wires of wired controller to CN22 terminal
on PCB directly.
2. Two wired controllers control one high wall unit (two to one), connect the wires of wired controller 1 and 2 respec-
tively to CN22 and CN22-1 on PCB.
3. One wired controller controls more than one unit (one to more), limited in high wall units is recommended and
mixed different type indoor units is not recommended . It's easy to do wrong wiring when there're many different
type indoors.
If you choose one to more (mixed different type indoor units), please follow the principles below:
a. The communication wires of wired controller inlet or outlet high wall units are 3 cores. It means to connect all the
wires "ABC".
b. When one wire controller connects to more indoors, all the wires between terminals are 3 cores. When other indoor
units are slave ones of wired controller, please move off the "A" wire between indoor and PCB CN22 terminals. It
means that when other indoors are slave ones of wired controller, no need to connect "A" wire.
c. When the "A" wire is not connected to other ordinary indoors which are the slave ones of wired controller, please do
some insulation on it and avoid touching other electric circuit.
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