Hi Chaps, Happy New Year to you all. More of a math thing, I would like to implement into my home heating automation flows really. My heating comes on at a time determined by the times set in a ‘Big Timer’ node (usually an hour before we get up for the day) However if the temperature is lower it t…

Thanks for that useful info chaps. I'll have a look and see how it goes.

A simple approch would be using the range-node for scaling the temperatur to a preheating time. [grafik] [{"id":"e029089a247cd7f6","type":"range","z":"afa28cf7e65fe890","minin":"5","maxin":"15","minout":"120","maxout":"30","action":"clamp","round":true,"property":"payload","name":"temperatur -> p…

This can be very successful but of course, depends a lot on your location and style of house. For example, our house is on a hill exposed to Northerly winds and so heating requirements also depend on wind direction and speed. I'd start with something simple as suggested, see how that goes. It is a…

A simple flow like this might work, as long as Bigtimer lets you trigger a scheduled action at an earlier time, and your system can take happily accept multiple "ON" commands without an "OFF" in between. I have guessed that the current indoors temperature might be available as a context variable. O…

Thanks for those suggestions chaps. Given me some ideas to tinker with.

Do you control the temperature with node red?

Yes. From a dashboard I can set a temperature, and read a temperature measured by a sonoff device. Then I just compare the two and output a true or false to another sonoff relay device controlling my boiler. That's a little simplistic as I have several measuring devices, timers, delays, averaging an…

Its a bit clunky but it works. And I've had a lot of help from you guy's with this. [Node red heating flow]

[image] Surefire01: From a dashboard I can set a temperature In that case, rather than changing the time at which the boiler starts up, you could ramp up the setpoint temperature to the final temperature at the time at which you want it warm. Ramp it up at the rate that the system achieves, a…

have a look at heating my Gym room you can load different profiles into cronplus depending on the outside temperature

OK thanks for that @juntiedt . Of course there are other ways to solve it and like you I would prefer cronplus over bigtimer. I just illustrated a very simplistic approach that the OP might follow without changing their existing schedules.

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Optimise heating turn on times

General

juntiedt 10 January 2025 17:03 13

this could also help to solve your problem
heating-curve

Topic		Replies	Views
Ideas on how to create a Thermostat flow with scheduling General	9	1158	14 June 2022
Control an electric heater General	8	603	24 November 2022
Node-red-contrib-ramp-thermostat Share Your Nodes	28	5263	22 June 2021
Automation based on temperature Developing Nodes	9	2215	8 November 2020
PID controlled heater General	23	1673	10 July 2020

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Optimise heating turn on times

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