| Posted: Thursday Sep 12th, 2013 12:46 pm |
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ndh
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I promised this a while back and finally ....
The following is a write up and .cclx for a multizone underfloor heating system using the TCS (temperature sensor); CBus Relays and the KT03
The document is fairly tidy but there are still lots of irrelevant comments in the Responses. I hope to tidy up in a week or two and will incorporate anything arising from the discussion.
Due to attachment size limitation there will be a following post for the write up. Looks like I need to split it into 2 parts and zip ... actually 4 parts!
.cclx is below
Attachment: Heating_246 V1.zip (Downloaded 13 times) Last edited on Friday Sep 13th, 2013 08:22 am by ndh
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| Posted: Thursday Sep 12th, 2013 01:01 pm |
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| Posted: Thursday Sep 12th, 2013 01:02 pm |
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| Posted: Thursday Sep 12th, 2013 01:08 pm |
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| Posted: Thursday Sep 12th, 2013 01:09 pm |
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| Posted: Thursday Sep 12th, 2013 04:24 pm |
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ndh
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revised .cclx back in first post.
Enjoy
Last edited on Friday Sep 13th, 2013 08:24 am by ndh
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| Posted: Friday Sep 13th, 2013 03:53 pm |
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7th Post |
Home
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WOW !
This system has been installed?
Do you have any feedback from the customer?
If you started from scratch or were asked to design another system what would you do differently?
How efficient do you think the overall system is (in terms of energy saving)?
CBUS have their own temperature sensors and time programs/timers - would you consider CBUS as a heating system on its own. Conversely why use CBUS why not just provide good old relays directly it Comfort.
Well done !
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| Posted: Saturday Sep 14th, 2013 11:27 am |
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8th Post |
ndh
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This system has been installed?
Yes and running for well over a year
Do you have any feedback from the customer?
They seem ok with this. I've not had any comments either way for a long time.
If you started from scratch or were asked to design another system what would you do differently?
It depends on the circumstances. This configuration was not driven by me so it was a solution to meet a requirement. Comfort & CBus were being specified. It closely matched Webbrick that went bust. Comfort is also driving blinds; window openers etc.
If I started from scratch I would pass the job over to you :-) .....
It was not financially viable as a one off but with the documentation & code now provided it can be repeated knowing that 80% - 90% of the work has been done. The KT03 is a little 'tight' on screen space.
How efficient do you think the overall system is (in terms of energy saving)?
Not given this much thought. It is 'infinitely' customisable though. Given the blinds and window openers are Comfort also the cooling side could be integrated. In summer the Solar PV could be switched to the immersion and probably other stuff.
CBUS have their own temperature sensors and time programs/timers - would you consider CBUS as a heating system on its own. Conversely why use CBUS why not just provide good old relays directly it Comfort.
Wouldn't you need a PAC? That would be a new product for me and an extra one on site (2 things to programme). Probably need their touchscreen and then still need the KT03 (door entry)? Some things would still need to be integrated with Comfort.
Well done !
Flattery will get you everywhere....
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| Posted: Saturday Sep 14th, 2013 11:38 am |
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| Posted: Saturday Sep 14th, 2013 11:54 am |
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ndh
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Too much flattery will get you ....
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| Posted: Saturday Sep 14th, 2013 12:11 pm |
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ndh
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I forgot to answer about 'good old relays'.
Yes that is definitely an option but during development the C-Bus indicators were very useful.
One method of manual override is just to press the buttons on each relevant relay. That was also useful during development and testing given it is hard to see solenoid state.
So to anyone else I would say yes consider (solid state) relays but more wires and wiring time and then more flags to check rather than Counter xx = 0 or 255
8 Finder din rail relays would be very compact (50mm?) and I think have indicators.
If we are using outputs in this example then combined with other requirements we would be over 16 so would then need an expansion card (LEM or RIO).
Horses for courses ...
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| Posted: Saturday Sep 14th, 2013 02:44 pm |
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What have horse got to do with it?
Were you heating stables?Last edited on Saturday Sep 14th, 2013 02:45 pm by Home
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| Posted: Tuesday Oct 8th, 2013 08:33 am |
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slychiu
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That is a very impressive programming job by Nigel, congratulations for making it work. It must have taken a lot of design and testing.
Next time, the built in Thermostat function in Comfigurator 3.7.6 and Ultra 7.039 should make your job much easier as it removes the need for programming of the action of the thermostat comparison and setpoints
see http://www.comfortforums.com/forum42/3547.html
Example KT03 design
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| Posted: Wednesday Oct 16th, 2013 02:40 pm |
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