3. Installation
For correct installation, follow the instructions in the individual component manuals.
Important: When installing a single-phase ESS in a system with a three-phase connection to the utility grid, make sure you install the ESS on phase one, L1.
Temperature-compensated charging
Multi, MultiPlus, MultiGrid or Quattro
Connect the temperature sensor supplied with the device. In the case of installations with multiple units in parallel, and/or dual- or three-phase configurations, the temperature-sense wire can be connected to any unit in the system. For more information, see the Parallel, split- and three-phase VE.Bus systems document.
The Multi will use the measured battery temperature for temperature-compensated charging. It will also do this when charging with power coming from a grid-tie PV Inverter, regardless of whether it is connected to mains, or, in case of mains failure, with solar power coming from a grid-tie PV Inverter when that inverter is connected to the output.
Solar chargers
Solar chargers will automatically use the information from the Multi or Quattro for temperature-compensated charging as well. This applies to VE.Direct solar chargers as well as VE.Can solar chargers.
Voltage-sense wiring
For Multi, MultiPlus, Multi Grid and Quattros: wire the voltage-sense according to the instructions in the manual.
For VE.Direct solar chargers: there is no voltage-sense option: no voltage sense is used.
VE.Can solar chargers: connect a voltage-sense wire to one of the solar chargers in each 'sync' group.