Originally posted by Andy the Minion
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Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members
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Originally posted by roydonaldson View PostAndy, I have a house with 2 zone valves, ie. I have a larger house with it setup as upstairs and downstairs controlled by these zone valves. Having something such as Load Scaling would be beneficial in my house. Can this be enabled in this setup ? Surely this would be something that could be even more beneficial in larger homes that would probably be setup with 2 zone valves controlling them ?
Thanks, Roy.
In your situation the central heating load is split in half (2:1) and then assume the same 5:1 turndown because of outside temperature, you will be at a 10:1 turndown ratio. Load scaling will definitely still help as the boiler modulation may only give a 5:1 turndown ratio.
Load scaling will be available for you if you have a BDR91 relay running the boiler rather than firing the boiler from the orange wire on the zone valves.Resideo employee. Comments are personal, and likely to get a hard stare from Rameses
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Originally posted by paulockenden View PostOptimisation hasn't gone.
It's global though, like in the last release. A while back it was switch off and onable at zone level, but a previous update nuked that.
I believe that's the only time that an update has removed functionality from Evohome.
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Originally posted by bruce_miranda View PostA variable Economy quick action set back, please. It's such an under utilized feature because of the fairly useless fixed 3C.
I had to build a Raspberry Pi based kludge to get round the silly fixed Eco knockback temp.
Surely it should be easy to add a parameter in the quick actions setup screen?
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Originally posted by G4RHL View PostThe form asks for the MAC address and not the IP address. Usually I have found with things like this it is the IP address that is required.
Apart from that it is absolutely great this is being done. Thank you.
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My software has changed. Great.
Looking forward to seeing if over shoots can be settled down, might save me having to change a couple of older valves out.
Warm weather shutdown would be good, safe me using IFTTT, if you have Geo Fencing and warm weather applet running you can get conflicts.
Cold weather boost will be good as my living room seat is in a massive bay window.
Thanks
Frank
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Updated software and the new facilities look great - hopefully sort out the juggling of temperatures in the spring season where I have to keep invoking economy to prevent overheating, and also for those really cold times when I have to up the boiler temp Many thanks to the Resideo team and welcome to AndyTheMinion (love the name great to be able to smile in these dark days )
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Originally posted by BuxtonJim View PostThanks Andy, update received. Cold weather boost, warm weather saver and load scaling all installed with default values (where offered) accepted and applied across all zones.
My boiler model wasn't showing on the drop down list so I entered it as Bosch, a WB Greenstar 38Cdi.
Just as a side note, while I would have loved zone-level optimisation the global feature has been very effective in my set up thus far.Resideo employee. Comments are personal, and likely to get a hard stare from Rameses
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Originally posted by G4RHL View PostI have answered my own question and will go back to sleep whilst I await word from Resideo. Interesting that the MAC address is titled “Thermostat MAC address” but then in many ways that is what the control panel is!Resideo employee. Comments are personal, and likely to get a hard stare from Rameses
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Originally posted by bruce_miranda View PostA variable Economy quick action set back, please. It's such an under utilized feature because of the fairly useless fixed 3C. Hometronic used to allow it be changed.
-3C is too much and very inflexible. Instead of an "Eco" mode with a fixed setting that nobody likes, a mode where you can set a custom house wide differential override would be great. Call it "offset" or similar with an adjustable offset of say -5C to +5C in 0.5C steps.
Many times I would just like to turn up all zones by +1C or turn them down by -1C and have them still follow their schedules, but just with the offset applied...
I've just signed up to the Beta, hopefully I get accepted...
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Cold boost working I think, see pics. got mine set to 0.5'C boost and it has change schedule setpoint up by 0.5C and placed the boost symbol on screen. Rooms selected for boost did not boost if SP was below 16C and less than -10C from SP, So goooood. Its a great start.. I am sure we will all ask for the -10C to be variable, and variable by room Not all rooms have same insulation values
Have seen a issue since software update.
Madisons Room was manually changed on TRV to 18.5C but instead of clock override symbol I got the permanent loop symbol, see picture, so would of stayed permanent at 18.5C', had to cancel from touch panel.
Coldboost.jpg
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Originally posted by Andy the Minion View PostDear All, The Load scaling feature can be found in the Installer section, system parameters and everybody with a boiler bound to an ON/OFF (BDR91) boiler relay will have it.
I would recommend enabling the ‘full’ mode unless you have an extremely well insulated property.
Load scaling is a self-learning algorithm and it will take a number of heat-up cycles (maybe a week but it depends on the system and usage) to get the hang of each room. It will then continue to refine itself in parallel with the existing adaptive fuzzy logic that is already in Evo controling the steady state temperatures.
As a secondary result of learning the zone size (scale) we have seen an improvement in the temperature overshoots in both oversized radiators and very slow responding sensor locations.
The feature was designed to improve the operating efficiency of ON/OFF boilers by running them for longer at low load and reducing the return temperatures.
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