Mitsubishi Electric Mr.SERVICE PUHZ-HRP71VHA Service Manual page 22

9-3. INDOOR – OUTDOOR CONNECTING CABLE
The cable shall not be lighter than design 60245 IEC or 60227 IEC.
Outdoor power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
The max. cable length may vary depending on the condition of installation, humidity or materials, etc.
Indoor/Outdoor separate
power supply
Indoor unit-Outdoor unit
Indoor unit-Outdoor unit earth
The optional indoor power supply terminal kit is necessary.
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.
Max. 45m Max. 50m
3 1.5 (polar) 3 2.5 (polar)
1 Min. 1.5 1
22
Wire No. Size (
3 2.5 (polar) and S3 separated
Min. 2.5
Wire No. Size (
Max. 120m
2 Min. 0.3
—
)
Max. 80m
1 Min. 2.5
)