I have almost a basic system, some VE Lithium Battery Smart that are controlled by the Lynx BMS that power a MultiPlus 3000 group. It is install in my full time RV where the overhead of the MP 3000 is just too high for day in- day out life. The whole RV is perfectly wired for me to add the Phoenix 12|800 I had in my last RV.
The installer of the core system warned me about the do’s and don’t of adding the Phoenix. He told me things like:
- The Phoenix MUST have it’s power wired to the Lynx BMS’s Allowed to Discharge port so the Lynx can shut it down if the battery is too low.
- The Cerbo GX can only have one inverter group (the MP) so the Phoenix would just be a “DC Load” and I would not be able to plug the VE.Direct cable up to the Cerbo GX to get status from it.
I see the truth in #1 and don’t like #2 at all, but have no reason to doubt the installer on that point. I assume both points are true, correct?
I have a few questions:
A) is there any key info I am missing to do this install?
B) what can I do to get the consumption of the Phoenix on the Cerbo? At a bare minimum, I can track DC power consumption by putting a SmartShunt on it as a power meter. But what about the AC side, is the Energy Meter VM-3P75CT the only option or are there other options? How do I configure the Cerbo so show these loads?
C) Since the Phoenix’s VE.Direct port cannot be connected to the Cerbo, the VE.Direct Bluetooth Smart dongle can be used to control (on/off) and monitor the inverter, correct?
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I have reached out to my installer multiple times over the last few days to get a good digital copy of the wiring diagram and have not heard back from the company (we didn't part on the best of terms), so I photographed the paper copies I have and you can see them here:
https://www.miltonstreetphotography.com/airstreamelectricaldiagram
