Controlling central heating (HVAC) through X-10

Post by **MindBender** » Wed Apr 16, 2008 4:56 pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Bwired
 @Marcel & Robert
That would be good News for sure!
I have a opentherm Nefit HRC24 with an advanced thermostat, also Nefit is known that they use a slightly different opentherm protocol

Where did you buy the Remeha Gateway, thinking about trying it out, even if I have to buy a Remeha Celcia 20
<hr height="1" noshade id="quote"></blockquote id="quote">
I bought it at Tegro in Tilburg. I think it cost me about 120 Euro. Be sure to order the version without modem becuase that one is about 50 Euro more expensive and (hayes compatible) modem is not very usefull.

The Celcia 20 shouldn't cost you more than 40 Euro, but there is one on Marktplaats:
http://www.marktplaats.nl/index.php?url ... staat.html

Post by **MindBender** » Wed Apr 16, 2008 6:01 pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by MindBender
 The Celcia 20 shouldn't cost you more than 40 Euro, but there is one on Marktplaats:<hr height="1" noshade id="quote"></blockquote id="quote">
Sorry for the typo, that is: 140 Euro. (http://www.ketelsprinter.nl/index.html? ... t=d12.html)

The Gateway S58786 can be bought here:
http://www.aangenaamwarm.nl/10000094850 ... 7650c9b083

By the way: The Bosch TF30 and the Itho IDK 300 are probably OEM versions of the Celcia 20. I am not aware of any AWB OEM versions, but they may very well be available.

Post by **Snelvuur** » Wed Apr 16, 2008 11:50 pm

i dont have much use for it if i have cityheating no? since that does not involve a boiler.. but i do want to be able to set the temperature with the flick of a button if possible

// Erik (binkey.nl)

Post by **Hogeterp** » Thu Apr 17, 2008 9:24 am

Maybe is this a solution for the Nefit heating system.

http://www.picbasic.nl/frameload_nl.htm ... fit_nl.htm

Post by **MindBender** » Thu Apr 17, 2008 9:30 am

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by snelvuur
 i dont have much use for it if i have cityheating no? since that does not involve a boiler.. but i do want to be able to set the temperature with the flick of a button if possible

<hr height="1" noshade id="quote"></blockquote id="quote">In that case you're even 'luckier' than we are becuase it makes independend temperature regulation in different rooms a lot easier. Having a collective heating source can be compared to having a boiler in outside-temperature-controlled mode: Warm water is 'always' available and if a room needs heating, it's just a matter of opening the valve.

You could consider using Honeywell HR80 valves, which can be set (and read out) remotely through RF, but they are quite expensive: 130 Euro each, not including the actual valve. Though they can be found on eBay for half that price if you buy 5.

I have heard ELV also has a system, but I don't know much about it. Google is your friend here. And there's also still the (butt-ugly) Conrad system.

Post by **Bwired** » Thu Apr 17, 2008 10:56 am

I know the picbasic construction, it sure is an option for me because I really think the Remaha solution will probably not work on the Nefit HVAC. I want to control my heating system by computer and by manual control. Is it possible to put more then 1 thermostat on the Hvac system. So a simple one controlling with a pic and an advanced one (full opentherm) no pic in the livingroom.

Post by **RdP** » Thu Apr 17, 2008 4:24 pm

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Bwired
 I know the picbasic construction, it sure is an option for me because I really think the Remaha solution will probably not work on the Nefit HVAC. I want to control my heating system by computer and by manual control. Is it possible to put more then 1 thermostat on the Hvac system. So a simple one controlling with a pic and an advanced one (full opentherm) no pic in the livingroom.
<hr height="1" noshade id="quote"></blockquote id="quote">I asked this question on another (dutch) forum and according to the experts this is not possible.
See http://www.klusidee.nl/Forum/about27391 ... ight=nefit

I'm in the same situation as you are and controlling this is on the top of my list....[}:)]

/RdP

Post by **Rebel** » Tue Sep 09, 2008 10:10 pm

Hi Guys,

Last month my heather is replaced with a Remeha!
After reading this topic I am very curious about the coupling from the gateway with Homeseer 2

Before I can buy the gateway, I have to to persuade mij wife

Thanks in advance.

Post by **Bwired** » Tue Sep 09, 2008 10:39 pm

Mindbender is the guy to do it [:D]

Post by **MindBender** » Tue Sep 09, 2008 10:44 pm

Hi Rebel,

We know far more about the protocol then is strictly required to just change the setpoint and read out the current temperature. Most of it can be found here:
http://www.nerdclub.nl/remeha_gateway/index.html
My apologies for the crappy make-up: Coding HTML isn't exactly a hobby of mine. For questions you can send me a PM.

Post by **Bwired** » Tue Sep 09, 2008 10:48 pm

I want a Remeha HVAC system, why did I buy a dawn Nefit [:(]

Post by **Rebel** » Tue Sep 09, 2008 10:58 pm

Sorry Pieter,

Its a present from our "woningbouw vereniging"

Post by **Digit** » Wed Sep 10, 2008 8:38 am

I already made up my mind regarding a new HVAC some time ago:
http://www.hekkers.net/blog/2008/06/07/Time+For+A+New+Central+Heating.aspx
Now it's only a matter of buying and installing it[:D]

Post by **mo046** » Wed Sep 10, 2008 4:45 pm

Marcel (mhwlng, see previous discussion in this topic) has released a Girder plugin for the Remeha Gateway:
http://www.promixis.com/forums/showthread.php?t=18432
http://home.claranet.nl/users/mhwlng/

The code can be found here:
http://home.vianetworks.nl/users/mhwlng/remeha.lua

This and the info from Mindbender could be a nice startingpoint for a Homeseer plugin. Unfortunately I'm not experienced with Homeseer plugin development and have no Remeha Gateway (yet ..).

Maurice

Post by **Rebel** » Wed Sep 10, 2008 5:11 pm

That wold be nice if there are people capeble to make a plug-in for HS.

I've ordered a gateway by http://www.badkamermarkt.nl/sanitair/Re ... 50780.html for 58.91 (3-5 weeks)
so the beginning is started...