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4-3. Wiring System Diagram
(1) See section “4-2. Wire Length and Wire Diameter for Power
Supply System” for the explanation of “A,” “B,” “C,” “D,” “E”
and “F” in the above diagram.
(2) The basic connection diagram of the indoor unit shows the
6P terminal board, so the terminal boards in your equipment
may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding the R.C. address setting, it can be executed
by remote controller automatically. See section “7-4. Auto
Address Setting”.
(1) When linking outdoor units in a network, see section “ATTENTION!”.
(2) Do not install the inter-unit control wiring in a way that forms a loop.
(3) Do not install the inter-unit control wiring such as star branch wiring. Star branch wiring causes mis-address setting.
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
Outdoor unit
Central Controller
Outdoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit Indoor unit Indoor unit
More than 2m required
Outdoor unit
Branch point
Outdoor unit
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
Outdoor unit Outdoor unit
Prohibited
Prohibited
Outdoor unit Indoor unit Indoor unit
Indoor unit Indoor unit
Branch point
NO
(5) Use shielded wires for inter-unit control wiring (C) and ground the shield
on both sides, otherwise misoperation from noise may occur.
Connect wiring as shown in the section “4-3. Wiring System Diagram.”
Shielded wire
(Functional earthing) (Functional earthing)
(6) Use the standard power supply cables for Europe (such as H05RN-F or H07RN-F which conform to CENELEC (HAR)
rating specifications) or use the cables based on IEC standard. (60245 IEC57, 60245 IEC66)
00_341136_2WAY_Eng.indb 33 2022/9/19 9:27:26
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