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kevinsmart
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kevinsmart
Automated Home Guru
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15th September 2018
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Yesterday,
02:55 PM
kevinsmart
replied to a thread
Anyone using Domoticz with Evohome OT + Outdoor Temperature + HGI80 (or similar)
in
Heating Control
Here are all the types of requests seen by my OTGW. You can see there are a bunch of them with a period of around 1m45s. The DHW ones are odd,...
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14 replies | 306 view(s)
Yesterday,
10:41 AM
kevinsmart
replied to a thread
Heat pumps with evohome
in
Heating Control
Great. Might be useful to understand typical electricity consumption/costs too.
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3 replies | 144 view(s)
Yesterday,
10:34 AM
kevinsmart
replied to a thread
Anyone using Domoticz with Evohome OT + Outdoor Temperature + HGI80 (or similar)
in
Heating Control
Bruce, how often does the Evohome controller communicate with the OTB? Maybe that frequency has changed and that influences how often the OTB reads...
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14 replies | 306 view(s)
25th February 2021,
11:20 PM
kevinsmart
replied to a thread
Anyone using Domoticz with Evohome OT + Outdoor Temperature + HGI80 (or similar)
in
Heating Control
From my previous house with Intergas boiler. The Intergas boiler returns fractional temperatures, its sensor was very accurate according to my...
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14 replies | 306 view(s)
25th February 2021,
09:55 PM
kevinsmart
replied to a thread
Anyone using Domoticz with Evohome OT + Outdoor Temperature + HGI80 (or similar)
in
Heating Control
Yes, that's right, approximately every 1m 45s. It's not OTGW initiated, it is coming from the OTB (T for Thermostat, B for Boiler): ...
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14 replies | 306 view(s)
25th February 2021,
07:58 PM
kevinsmart
replied to a thread
Evohome - excessive use of optimise start period
in
Heating Control
It's worked well for me in both a radiator and now a UFH setup. I can hardly believe that the previous owner of my house had the UFH TMV set to 75C...
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9 replies | 319 view(s)
25th February 2021,
07:54 PM
kevinsmart
replied to a thread
Heat pumps with evohome
in
Heating Control
Out of interest Vaughn, what is your setup? I see myself eventually going down the GSHP route. My house was originally going to have one fitted but...
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3 replies | 144 view(s)
25th February 2021,
07:50 PM
kevinsmart
replied to a thread
Anyone using Domoticz with Evohome OT + Outdoor Temperature + HGI80 (or similar)
in
Heating Control
Stick an OTGW between the OTB and VR33? That should tell you whether the Domoticz->HGI80->OTB path is working, returning the same value. We know...
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14 replies | 306 view(s)
23rd February 2021,
08:39 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
Yes, this initially confused me as well. A 10C request is used by Evohome to signify off, but by default, if CH Enable is on, it will be interpreted...
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49 replies | 4972 view(s)
20th February 2021,
07:50 PM
kevinsmart
replied to a thread
Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members
in
Heating Control
Heat Pumps are supported by the latest firmware and new BDR91T
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839 replies | 119716 view(s)
18th February 2021,
08:42 PM
kevinsmart
replied to a thread
Honeywell evohome and OpenTherm integration
in
Heating Control
I think it’s displaying the flow temperature request (control setpoint). So if your current flow temperature exceeds this temperature, the boiler...
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92 replies | 19645 view(s)
18th February 2021,
08:26 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
So it turns out, after all that, that floor heating mode doesn’t work very well for my setup. In this mode the boiler appears to reduce its...
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49 replies | 4972 view(s)
13th February 2021,
02:30 PM
kevinsmart
replied to a thread
Accuracy of Nest TPI control?
in
Heating Control
Maybe they changed the firmware, my Nest V2 never pulsed, just appeared to stay off far too long. OpenTherm will improve matters if your boiler is...
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11 replies | 514 view(s)
13th February 2021,
02:27 PM
kevinsmart
replied to a thread
Accuracy of Nest TPI control?
in
Heating Control
Yes, Evohome
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11 replies | 514 view(s)
13th February 2021,
02:05 PM
kevinsmart
replied to a thread
Accuracy of Nest TPI control?
in
Heating Control
There’s an explanation here: https://support.google.com/googlenest/answer/9250165?hl=en-GB#zippy=%2Chow-true-radiant-works Whereas with...
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11 replies | 514 view(s)
13th February 2021,
01:38 PM
kevinsmart
replied to a thread
Accuracy of Nest TPI control?
in
Heating Control
I don’t think Nest employs TPI in the same sense as the CM927, switching on/off in 10 minute intervals. But it’s True Radiant algorithm does...
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11 replies | 514 view(s)
13th February 2021,
02:12 AM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
I’ve added my OTGW controlled Arduino relay to switch my boiler between standard heating (40-60C) and floor heating (20-39C) modes. Appears to work...
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49 replies | 4972 view(s)
12th February 2021,
01:07 PM
kevinsmart
replied to a thread
Evohome app broken
in
Heating Control
What’s worked for me in the past is to go to the mytotalconnect web interface, delete your location and add it again. I think that resyncs.
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455 replies | 63294 view(s)
11th February 2021,
10:57 AM
kevinsmart
replied to a thread
Evohome app broken
in
Heating Control
I think rebooting your controller by pushing the batteries apart should remove the phantom zone.
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455 replies | 63294 view(s)
6th February 2021,
05:59 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
Vokera Unica, and LPG, unfortunately Bruce. Will probably make do with it until the time is right to fit a GSHP.
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49 replies | 4972 view(s)
6th February 2021,
04:33 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
I learned that my boiler’s floor heating jumper tag setting is actually dynamically read. If the jumper is inserted, OpenTherm will switch from a...
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49 replies | 4972 view(s)
2nd February 2021,
09:32 PM
kevinsmart
replied to a thread
Evohome cycle rate and other settings
in
Heating Control
For a gas boiler, I would set to 6 cycles per hour, 1 minute minimum.
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24 replies | 1616 view(s)
2nd February 2021,
08:28 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
I can now see how sub-optimum Evohome’s OpenTherm low load control is. Basically it appears to be invoked if the burner is observed to go out. ...
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49 replies | 4972 view(s)
2nd February 2021,
02:14 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
Yes, that’s my concern now too, I am reliant on the OTGW for OpenTherm to work properly. Without the OTGW, Evohome would be attempting to heat my...
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49 replies | 4972 view(s)
31st January 2021,
05:23 PM
kevinsmart
replied to a thread
Evohome app broken
in
Heating Control
I had that issue when setting up, a controller reboot by removing the batteries fixed it.
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455 replies | 63294 view(s)
30th January 2021,
10:42 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
That’s great! How long has your tweak been running, are you happy with the results? Any overshoots?
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49 replies | 4972 view(s)
30th January 2021,
09:07 PM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
My low load control workaround appears to be an improvement, less burner on/off cycles. Yes, eventually the boiler will anti-cycle but less than...
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49 replies | 4972 view(s)
29th January 2021,
11:25 AM
kevinsmart
replied to a thread
New home, mammoth Evohome install
in
Heating Control
Some other updates. I spoke with Vokera about disabling the DHW preheat that was happening every hour over night even though I am using as a...
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49 replies | 4972 view(s)
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