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mathieucarbou committed Jul 7, 2024
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12 changes: 6 additions & 6 deletions docs/blog/2024-07-01_shelly_solar_diverter.md
Original file line number Diff line number Diff line change
Expand Up @@ -78,15 +78,14 @@ Some additional hardware are required depending on the installation.
- A 16A or 20A breaker for your water tank (resistance) electric circuit
- A 25A relay or contactor for the bypass relay (to force a heating) for the water tank electric circuit
- A protection box for the Shelly
- **The LSA voltage regulator is far better than the LCTC one**: the variation of voltage from 0 to 10V better matches the power curve of the output

## Wiring

### Shelly Add-On + DS18B20

First the easy part: the temperature sensor and the Shelly Add-On, which has to be put behind the Shelly Dimmer.

![](/assets/img/hardware/Shelly_Addon_DS18.jpeg)
| [![](/assets/img/hardware/Shelly_Addon_DS18.jpeg)](/assets/img/hardware/Shelly_Addon_DS18.jpeg) | [![](/assets/img/hardware/shelly_dimmer_with_addon.jpeg)](/assets/img/hardware/shelly_dimmer_with_addon.jpeg) |

### Electric Circuit

Expand Down Expand Up @@ -125,8 +124,7 @@ Also, this central place allows to control the 1, 2 or more dimmers remotely.

- Make sure the switch (input) are enabled and inverted. S1 should replicate the inverse state of the relay / contactor, so that when you activate the contactor through the Dimmer output remotely, the dimmer will deactivate itself.
- Set static IP addresses
- Use the min/max settings to remap the 0-100% to match the voltage regulator.
I noticed that the LSA allows a wider range but the one from LCTC has to be re-mapped from 10-80%
- Use the min/max settings to remap the 0-100% to match the voltage regulator. In the case of the LSA and LCTC, I found that **I had to remap to 10%-80%.**

### Shelly Pro EM 50 Setup

Expand Down Expand Up @@ -337,9 +335,11 @@ Here is a PoC box I am using for my testing with all the components wired.

The Shelly Dimmer Gen 3 with the Shelly Addon are in the black enclosure, the voltage regulator on the right and the Shelly EM Pro at the top right.

In this PoC, I have used the LCTC voltage regulator which comes already pre-mounted on a heat sink, but I encourage you to use the LSA instead (which I also have). The LSA is better at detected lower DC voltage so the dimmer resolution will be increased.
In this PoC on the left, I have used the LCTC voltage regulator which comes already pre-mounted on a heat sink.
On the right, with the LSA.
Both are similar.

![](/assets/img/hardware/shelly_solar_diverter_poc.jpeg)
| [![](/assets/img/hardware/shelly_solar_diverter_poc.jpeg)](/assets/img/hardware/shelly_solar_diverter_poc.jpeg) | [![](/assets/img/hardware/shelly_solar_diverter_poc2.jpeg)](/assets/img/hardware/shelly_solar_diverter_poc2.jpeg) |

## Help and Support

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