Openhab Heating Configuration

This tutorial is a section of my wider series on creating a home automation solution for heating and watering in my house.  Refer to the index here.

In this post I cover a detailed configuration of Openhab for heating purposes.  We create the rule sets to allow us to have an arbitrary number of zones, with each zone having 4 setpoints at configurable times during the day.  The zones push those setpoints down to the devices in the zone.  We allow people to change the temperature in a zone using the wall thermostat, but override again at the next timed change.

We also control the running of the boiler based on how many valves are open – this is to avoid the boiler short cycling when there are very few valves or valves only partly open.  We’ll cover this in more detail when we get to the relevant rules.

We create a sitemap that gives us access to most of this information.

Continue reading

Advertisements

Configuration of MAXCUL and CUL Dongle

This tutorial is a section of my wider series on creating a home automation solution for heating and watering in my house.  Refer to the index here.

In this post I cover the installation of the firmware for the CUL dongle (culfw), the programming of the dongle to work with your raspberry pi, and configuration of the maxcul binding for Openhab.

At the end of this tutorial you should have one wall thermostat and one radiator valve paired to your raspberry pi via the CUL dongle.

Continue reading

Installing Openhab on Pi

This tutorial is a section of my wider series on creating a home automation solution for heating and watering in my house.  Refer to the index here.

In this post we install a new Raspberry Pi from scratch, and get OpenHab running on it.  We choose to use Wifi, and we install it headless (no GUI and no monitor).  We install by connecting the card reader to a linux machine, which gives us access to the file system as we build it.

Continue reading

Using Pi and OpenHab to control radiators and watering

Our house has hydronic radiator heating, we also have a watering system and other equipment.  I wanted to use a Raspberry Pi to control the heating, as our radiators previously had manual valves.  I also wanted to control the garden watering system whilst I was at it.

This tutorial series will cover the process of installing and configuring the software to achieve this, with topics being:

 

Solar hydronic heating

So, I’ve been wondering for a while about whether you can mostly heat your house with a (large) solar hot water system, plus a good sized storage tank to bridge you through cold periods, plus a hydronic (under floor or radiator) system.

I’ve been researching some more today, and probably am not a lot closer to knowing.  But what I have learned today I’ll include here, over time I’m going to post some more on this as I form more coherent ideas.

Continue reading