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● In case that the inter-unit control wiring in the link are all 2-line connection only, or mixed
with 2-line and 3-line connections:
1) All refrigerant systems are 2-line connection:
Outdoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit
: Branch point
Central Controller
Outdoor unit
Outdoor unit
More than 2m required
2) Only one refrigerant system is 2-line connection and other refrigerant systems are
3-line connection:
Outdoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit Indoor unit Indoor unit
Indoor unit
: Branch point
Central Controller
Outdoor unit
Outdoor unit
01_330918_EU_Eng.indb 31 2021/9/9 11:26:47
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