I'm looking to build a system that allows me to dump excess solar power to an immersion heater to heat a small 12 litre tank of water for hot showers.
I have a 230Ah Lithium battery. The battery is monitored via a Smart Shunt, so I know exactly it's percentage charge. I was wondering whether there exists a smart controller (Victron Cerbo GX??) which could be programmed to send excess solar power to a 12v immersion heater under the following conditions:
1: Battery is at 98% or more state of charge.
I.e. if the battery dropped below 98% charge then the immersion heater would switch off and the solar power would go back to charging the battery.
2: Water temperature is below 40°C. So as soon as the water reaches 40°C (nice hot shower temperature ) then the immersion heater switches off.
I think that a Victron Cerbo GX smart controller device might be clever enough and have enough inputs from temperature sensors etc to be able to do this... Does anyone on here have experience with a Victron Cerbo GX to know if this can be done?
Can anyone advise me of suitable Immersion heaters and temperature sensors to do this?
Dave
I have a 230Ah Lithium battery. The battery is monitored via a Smart Shunt, so I know exactly it's percentage charge. I was wondering whether there exists a smart controller (Victron Cerbo GX??) which could be programmed to send excess solar power to a 12v immersion heater under the following conditions:
1: Battery is at 98% or more state of charge.
I.e. if the battery dropped below 98% charge then the immersion heater would switch off and the solar power would go back to charging the battery.
2: Water temperature is below 40°C. So as soon as the water reaches 40°C (nice hot shower temperature ) then the immersion heater switches off.
I think that a Victron Cerbo GX smart controller device might be clever enough and have enough inputs from temperature sensors etc to be able to do this... Does anyone on here have experience with a Victron Cerbo GX to know if this can be done?
Can anyone advise me of suitable Immersion heaters and temperature sensors to do this?
Dave