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w The max. cable length may vary depending on the condition of installation, humidity or materials, etc.
Indoor unit-Outdoor unit
Outdoor power supply
Max. 45m, 147ft
3 o AWG15(polar)
Max. 50m, 164ft
3 o AWG13(polar)
Max. 80m, 262ft
3 o AWG13(polar) and S3 separated
Wire No. o Size
Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).
Intermediate connections can lead to communication errors if water enters the cables and causes insufficient
insulation to ground or a poor electrical contact at the intermediate connection point.
Indoor unit-Outdoor unit
Indoor/Outdoor separate
power supply
Max. 120m, 393ft
2 o Min. AWG22
Wire No. o Size
w The optional indoor power supply terminal kit is necessary.
8-3. INDOOR - OUTDOOR CONNECTING CABLE
OCH429--1.qxp 07.11.20 10:01 AM Page 22