Hope its ok to write english. I understand Norwegian but cant write well.
I am new to homey and own a bridge. I connected a heavy duty switch to the VVB (brand new osa saga 200L).
My flow looks like this (how to share flows so they show up so nicely?):
When the price changed (tibber),
And time is between 01 and 06 am, and price is one of 7 lowest today,
Then turn vvb on, else turn vvb off.
The flow seems to work, but after setting it up the water is considerably colder. At around 8 in the evening there is no warm water anymore. Even though the switch was on half the night.
Can a vvb loose all its heat in just 12 hours?? The wife already dislikes the smart home idea because of near cold showers… Urgent help is needed😄
I did turn the blandeventil up, so the water should be 50 degrees at the shower. At the same time, i turned the temperature in the vvb from 75 to 70.
You need to heat during the day as well. We have 200L and a house of four. After heating in the night there is enough hot water for 2-3 showers (we have a 20years old heater).
My logic is quite simple. I allow it to heat during the 18 cheapest hours a day, and stop it during the 6 most expensive hours. Always hot water available!
There is a risk that the price profile for a day has more than 6 very expensive hours, but it’s better than it was, so there is always a balance.
If I had access to the water temperature I’d probably tried to make a more intelligent algorithm, i.e. if the water temp is below 50 C or something, I’d accept a higher price, unless noone is home etc But I keep it simple.
Thanks Jan, it’s a simple flow that surely works.
I like to specify certain times to avoid getting into a higher effekttrinn. But so far it’s not successful anyways.
I might try that the vvb is on during the 9 cheapest hours. Like that it is surely on in the night and maybe during a dip in the day.
Other question, does the vvb refill itself with cold water when it has no electricity?
But the VVB used 8kwh last night and was on from 1am to 5.20am. Kinda much i feel. I wonder if this makes it all more expensive. Maybe the water cools so much that its better to heat a little in the day aswell even though the price is higher.
Any experience with this?
Is it possible to set up a flow that shows the kroner amount a device used? All data is there (tibber and kwh usage). But how to make homey calculate it?
But I keep it simple.
