I am hoping to use an evotouch programmer to control the system I’m in the process of setting up which is basically an S plan plus with a few add-ons. I believe I know what I need, but I’d really appreciate it if someone who knows more than I do about these things could just confirm that I’ve got this right. I have a Worchester combi boiler (Geenstar 40CDi) that is being used only as a system boiler, an unvented indirect dhw cylinder with its own stat, a hot water underfloor heating system with three zones that, unfortunately is controlled by another system altogether (OJ Electronics), and three hw radiator zones. I’d like to use the evotouch to control the three radiator zones and the dhw, but I’d also like to use it to control the timing of two other things: a circulation pump for the dhw (to circulate it through the system which I have set up with returns so that I can get hot water close to the taps at times of high usage) and the night set back function on the ufh system.
I believe that I need the following to do this: 1 evotouch controller, 2 DT92E room stats, 1 CS92 cylinder stat, 6 BDR91 receivers: three receivers to control the three zone valves for the three rad zones, one to control the dhw valve, one to control the dhw circulation pump, and one to control the nsb on the ufh system. Then there will be a wiring centre that will turn on the boiler and hot water pump whenever there’s a demand for heat or hw for the cylinder. Does this sound right?
Now here are my questions:
1. the cylinder has its own stat: can I use this or should I just disconnect it and use the CS92? I assume there’s no way to get the cylinder’s stat to communicate with the evotouch through a bdr91, but I suppose I could just wire it directly to the boiler with its own time switch. This would save me the price of the CS92, but it would cost a time switch and in addition the firing for dhw wouldn’t be modulated by the evotouch’s TPI system. So I might as well go with the CS92, right?
2 . Can I use the evotouch to act basically as a time switch through bdr91 receivers to switch on and off the dhw circulation pump (that will circulate the actual dhw up to the taps) and the nsb on the ufh? The OJ electronics people say nsb can be controlled by a ‘time switch or a programmer’ in the Product Sheet for the EMR temp controller at their website: http://www.ojelectronics.com/Hydroni...ller-4704.aspx ) Am I right in thinking I can just assign a zone to the circulation pump and the nsb and programme the evotouch to turn these two things on and off at the set times?
Any comments very welcome. Many thanks in advance.
I believe that I need the following to do this: 1 evotouch controller, 2 DT92E room stats, 1 CS92 cylinder stat, 6 BDR91 receivers: three receivers to control the three zone valves for the three rad zones, one to control the dhw valve, one to control the dhw circulation pump, and one to control the nsb on the ufh system. Then there will be a wiring centre that will turn on the boiler and hot water pump whenever there’s a demand for heat or hw for the cylinder. Does this sound right?
Now here are my questions:
1. the cylinder has its own stat: can I use this or should I just disconnect it and use the CS92? I assume there’s no way to get the cylinder’s stat to communicate with the evotouch through a bdr91, but I suppose I could just wire it directly to the boiler with its own time switch. This would save me the price of the CS92, but it would cost a time switch and in addition the firing for dhw wouldn’t be modulated by the evotouch’s TPI system. So I might as well go with the CS92, right?
2 . Can I use the evotouch to act basically as a time switch through bdr91 receivers to switch on and off the dhw circulation pump (that will circulate the actual dhw up to the taps) and the nsb on the ufh? The OJ electronics people say nsb can be controlled by a ‘time switch or a programmer’ in the Product Sheet for the EMR temp controller at their website: http://www.ojelectronics.com/Hydroni...ller-4704.aspx ) Am I right in thinking I can just assign a zone to the circulation pump and the nsb and programme the evotouch to turn these two things on and off at the set times?
Any comments very welcome. Many thanks in advance.
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