Heating panel: how to turn on/off the boiler

[dannykay 2]

I just finished installing electric valves on the floor heating manifolds. The valves are connected to multiple FGS-221 relay switches and the boiler is connected to one of the FGS-221. I also have multiple DS18B20 sensors throughout the house connected to the binary sensor FGBS-001. I created a heating panel with appropriate temperatures for the bedrooms and a linked heating device for each room linking the temp sensor to the appropriate floor heating valve.

It is all working fine with the valves opening and closing depending on the temperature supplied by the sensor in each bedroom. The problem is how do I manage the Boiler???

I tried adding the boiler to the linked devices but that created a problem where one room reaches set temperature it would shut the boiler while another room below set temp would turn it on and the boiler kept flip flopping on and off.

There has to be a smart way of turning on the boiler when one of the valves turns on. can this be done in block scenes, any pointers on how to do this? I dont know LUA BTW.

 

thanks for your help.

regards

[Sankotronic 2,370]

Just maybe one way of doing this is to make global variable "runBolier". If this variable is equal to zero (0) then stop boiler. If one room temperature drops bellow set point then temperature sensor opens valve and adds +1 to the variable. Variable value is now 1 so boiler starts heating. Then if another room temperature drops bellow set point then valve opens and +1 is added to variable so value of variable is now 2 and boiler still heating. When first room temperature reached set point valve closes and subtracts -1 from the variable. runBoiler variable value is now 1 so boiler is still heating and will continue until last room reaches set point temperature and sets the variable value back to 0.

 

 

 

 

[dannykay 2]

I played around with block scenes to turn on/off the boiler and basically did an "or" statement on all the FGS-221 connected to the heating valves (see pic). I thought (since I am still learning block scenes) that my scene would turn the boiler on when one of the devices was on but that I would need a separate scene to turn it off when the last valve was turned  off. But this one scene ended up also turning the boiler off when all valves where off. I guess what I am asking is this behavior normal for this scene?

Appreciate any help in clearing up this issue?

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[Sankotronic 2,370]

As I can see from scene picture provided, this scene can only start boiler if any of the valves is on but not turn it off. Is there any other scene that control boiler or it is turning off due to pressure in the system when all valves are closed?

[Muehle 2]

Have you tried to change from block scenes to LUA and just add 

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after 

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The "then"-statement should be at the end of your script.

 

Or you have a look to this post:

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Edited December 8, 2016 by Muehle
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[dannykay 2]

Thanx I will give it a try. it makes sense.I now have an "or" scene to turn it on and an "and" scene to turn it off.