Transmission wiring on Daikin VRV2

[Andy]

This won't work. If you add additional indoor units or change a PCB you must reset the system to redefine the communication loop.

We have found this out the hard way

you can initially set the system up by switching on in a sequence that you require. But as frank states the problem arises if you need to modify later.

Supermarket networks are the same, although some controller manufacturers allow radials on the network, I advise our guys to daisy chain, it's just easier in the long run

Kind Regards. Andy

[puddleboy3]

Can only say that i have seen systems that have been wired with star points all over the place, some times the system works other times it dont. So the lesson is dont star point. Oh and dont use screened cable its just going to lead to problems!