Afternoon all
After getting to a point where i am almost ready for my new boiler system to be fitted. I am going for either a Viessmann or unvented but i think swaying towards the unvented due to hot water contingency if the boiler goes down (too many stories of people waiting days for parts, taking cold showers!). I have rigged the system to be easily converted to two zones for CH, S plan (currently one loop, S plan), obvious hot water and possibly a single water underfloor being added eventually.
My original intention was to go with NEST gen 3 x2, one for each zone and the lower zone controlling the hot water. This is a medium sized 4 bed detached property, so nothing worryingly huge.
Yesterday i took the time to contact a really helpful chap enquiring about Evo Home which I can see is a far superior system, especially when linked to Opentherm! My problem is the usual cost associated given that I have 11 rads, 2 of which (designer) have nice shiny new valves which won't be Evo compatible and are quite prominent (kitchen/Hall).
This got me thinking about the benefits of Opentherm and upon reading, it sounds daft to ignore it. My problem is this though - from what i understand you cannot have duel NESTS on Opentherm as it understandably can only be controlled from one source, so is my only solution to stay with one ring? Maintaining what is in place now..... if i want to use Opentherm....
Possibly going to a single ring on Honeywell connect, using Opentherm bridge, hot water bridge - meaning i'll be opentherm from day one and able to add the TRV therms once i am able to afford (might need a second job just to pay for 11 of those :/)
After getting to a point where i am almost ready for my new boiler system to be fitted. I am going for either a Viessmann or unvented but i think swaying towards the unvented due to hot water contingency if the boiler goes down (too many stories of people waiting days for parts, taking cold showers!). I have rigged the system to be easily converted to two zones for CH, S plan (currently one loop, S plan), obvious hot water and possibly a single water underfloor being added eventually.
My original intention was to go with NEST gen 3 x2, one for each zone and the lower zone controlling the hot water. This is a medium sized 4 bed detached property, so nothing worryingly huge.
Yesterday i took the time to contact a really helpful chap enquiring about Evo Home which I can see is a far superior system, especially when linked to Opentherm! My problem is the usual cost associated given that I have 11 rads, 2 of which (designer) have nice shiny new valves which won't be Evo compatible and are quite prominent (kitchen/Hall).
This got me thinking about the benefits of Opentherm and upon reading, it sounds daft to ignore it. My problem is this though - from what i understand you cannot have duel NESTS on Opentherm as it understandably can only be controlled from one source, so is my only solution to stay with one ring? Maintaining what is in place now..... if i want to use Opentherm....
Possibly going to a single ring on Honeywell connect, using Opentherm bridge, hot water bridge - meaning i'll be opentherm from day one and able to add the TRV therms once i am able to afford (might need a second job just to pay for 11 of those :/)
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