Panasonic PAW-160MAH3M Installation Instructions Manual page 72

Electrical Wiring
5
10. If branching the inter-unit control wiring, the number of branch points should be 16 or
72
● In case that the inter-unit control wiring in the link has both 3-line and 2-line
connections:
> Set the terminating resistance with the TERMINAL pin (CN-TERMINAL) on
the outdoor unit control PCB (note, that the outdoor unit is connected by 2-line
connection).
Upon shipment the terminating resistance is set to "SHORT" (operative).
Leave one unit in short circuit condition among outdoor units in the link. Change
to OPEN for other units. For a system without link (no wiring connection
between outdoor units), do not remove the short plug.
8. Do not install the inter-unit control wiring in a way that forms a loop.
Outdoor unit
Indoor unit Indoor unit
9. Do not install inter-unit control wiring such as star branch wiring. Star branch wiring
causes faulty address setting.
Outdoor unit
fewer. (Branches that are less than 1 m are not included in the total branch number.)
Outdoor unit
Indoor unit
more than 1 m
Branch
point
Indoor unit
16 or fewer
more than 1 m
Indoor unit
more than 1 m
Indoor unit
Outdoor unit
Prohibited
Indoor unit
Prohibited
Indoor unit
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Outdoor unit
Prohibited
Indoor unit Indoor unit
Indoor unit
Indoor unit
Branch point
Outdoor unit
Indoor unit
Indoor unit
AHU Kit – Installation Instructions – 07/2023
Indoor unit
Indoor unit