Central heating switch

[stiefenswiegel]

I have trouble to understand the documentation for the central heating part.
Currently, i have all my thermostats in versatile, but the main switch (turn on/off heater) is done via node-red. This switch is a simple shelly that allows my central heater to pump hot water or stop this. Given the complexity behaviour, i have got an extensive node-red flow to make sure i turn on this heating function, or turn off, without missing anything.
Found a central configuration option, that i am not quitte sure should fullfill this.
Do i have to use this, to collect all proper heating requirements of any room, to deterimine 'heating on/off'? Can i override this with a main breaker switch, so i allow the central heating to be used when i want to (in spring, i do not want to use the heating when it could be convenient according to the rooms temperature).

Is it possible to make this work in the central configuration with that 'main breaker' or am i better off to build this in node-red?

[jmcollin78]

Hello @stiefenswiegel ,

Sorry I don't understand what you are trying to do. Did you talk about central boiler ? Or central mode ? Central heating doesn't exists in Vtherm.

[stiefenswiegel]

Sorry for explaining it badly, i am not quite sure if i use the correct terms, but i try to explain.

I have one central point that allows my central heating system to pump hot water into my radiators in all rooms. This is a simple shelly switch, when turned on it heats the radiator water to the desired temperature and starts pumping it to all rooms.
For each room, i have a versatile configuration, that controles one or more valves (TRV) part of that room.

So versatile does work as expected: it opens the valves when heating is required, it closes them when the target temperature is reached.

There is no connection currently between my shelly switch for the hot water on/off, and my versatile rooms.

I resolved this with a node-red diagram, to see if a room would require heating or not, to switch that shelly. Unfortunately, i cannot get this to work 100% flawless. The result is that i sometimes have water heating and pumping when all rooms (all trvs) are shut, or the other way around, rooms require hot water but the shelly never went on so no water is coming into that room.

Understanding that versatile thermostat is one of the most advanced, beautiful pieces of software related to this subject, i figured i might not understand the features correctly: vesatile thermostat might already resolve this issue for me, if it knows which switch should be turned on or off for the central heating.

Simply: how can i make versatile controle the hot/cold water switch, based on the heating requirements of all rooms combined, without the use of node-red? This many advanced features make it quite difficult to follow correctly, sorry for that!

[jmcollin78]

Hello, if I understand, you need a mecanism that listen to VTherm to activate or deactivate the switch of your central boiler.
Eventually, you will need a kind of threshold to start the central boiler when more than one TRV claims for heat. If only one needs heating maybe it is not useful to start the central boiler.

If this is your need, I have a good news: https://github.com/jmcollin78/versatile_thermostat/blob/main/documentation/en/feature-central-boiler.md. To configure that, you will need a Central configuration (new integration / Versatile / Central configuration).
Then follow the documentation.

If you need help don't hesitate to continue this discussion.

😉