View Profile: kevinsmart - Automated Home Forums

22nd January 2021, 11:40 PM

kevinsmart replied to a thread Understanding the way the HM80 works with Evohome in Heating Control

I’ve noticed similar behaviour with a BDR91 and the latest firmware. I prebound my system prior to installation. The BDR91 controlling my towel...

6 replies | 178 view(s)

21st January 2021, 11:43 PM

kevinsmart replied to a thread Understanding the way the HM80 works with Evohome in Heating Control

I had no issues with the HM80 and latest firmware but didn’t try to rebind it. I think I see what you mean, with the latest firmware if you try...

6 replies | 178 view(s)

19th January 2021, 11:38 PM

kevinsmart replied to a thread Evohome & Opentherm in Heating Control

I’ve got my new system up and running with my Vokera boiler and it looks like I was wrong, there is no distinction between CH and DHW demands coming...

20 replies | 1836 view(s)

16th January 2021, 02:45 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

In my new house, almost completed install, I’ve ditched the TMV and fitting a limit thermostat as a safety device.

63 replies | 6508 view(s)

16th January 2021, 01:28 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

Good stuff, look forward to hearing how you get on. The manifold will of course be fed with water between the HM80 min and max set temperatures.

63 replies | 6508 view(s)

15th January 2021, 05:16 PM

kevinsmart replied to a thread HR92 Updates in Heating Control

Must be old stock. Both of my new controllers had latest firmware pre-installed.

11 replies | 597 view(s)

8th January 2021, 11:04 PM

kevinsmart replied to a thread Evohome & Opentherm in Heating Control

Yes, you could suppress the CS=10 and start a timer. Stop the timer if CS>10 sent, otherwise issue CS=10 after timeout. I recall max modulation...

20 replies | 1836 view(s)

2nd January 2021, 06:09 PM

kevinsmart replied to a thread Evohome & Opentherm in Heating Control

Happy New Year! It would be helpful if you can share a graph which includes the boiler flow temperature to see whether it is overshooting and...

20 replies | 1836 view(s)

2nd January 2021, 05:39 PM

kevinsmart replied to a thread Advice please: 7 Zone UFH with Combi Boiler in Heating Control

There’s no off the shelf solution for powering the room stats, you could probably wire them to a transformer. Batteries should last a couple of...

4 replies | 290 view(s)

2nd January 2021, 01:30 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

My heating engineer handled all of that. Probably something like this: https://www.navitron.org.uk/dn20-to-22mm-male-male-connector And some...

63 replies | 6508 view(s)

2nd January 2021, 11:20 AM

kevinsmart replied to a thread Advice please: 7 Zone UFH with Combi Boiler in Heating Control

Hi! You won’t need the BDR91. You can buy a Modulation Pack which includes the Evohome controller plus OpenTherm Gateway, rather than BDR91. If...

4 replies | 290 view(s)

2nd January 2021, 02:31 AM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

That looks as if it might do the trick. I guess you will need some compression adapter couplers.

63 replies | 6508 view(s)

1st January 2021, 05:20 PM

kevinsmart replied to a thread Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members in Heating Control

In my previous house, with Intergas and my weather compensation setup running on the OGTW, I was able to disable weather compensation on an OpenTherm...

790 replies | 101929 view(s)

1st January 2021, 03:41 PM

kevinsmart replied to a thread Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members in Heating Control

I think the problem is actually with Intergas here. Evohome does distinguish via OpenTherm messages between DHW and CH mode requests.

790 replies | 101929 view(s)

1st January 2021, 02:40 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

I don’t think there would be any point connecting the flow sensor as the HM80 won’t be able to correlate its (unconnected) rotary position to it. The...

63 replies | 6508 view(s)

1st January 2021, 01:54 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

Maybe these?! https://www.ibc.ie/wp-content/uploads/MVN_Datasheet.pdf https://products.ecc.emea.honeywell.com/europe/ecatdata/pg_gr-vbg2.html

63 replies | 6508 view(s)

1st January 2021, 01:35 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

Yes, that’s correct and what we want to achieve. My point is if you could find a 2-port rotary/modulating valve, rather than 3/4-way, and were to...

63 replies | 6508 view(s)

1st January 2021, 01:15 PM

kevinsmart replied to a thread Evohome firmware 02.00.19.31 Beta Trial - Exclusive for Automated Home Members in Heating Control

You need an X-Plan setup: https://www.intergasheating.co.uk/consumer/2019/11/05/tech-talk-3/ Basically this uses a BDR91 to short out a cylinder...

790 replies | 101929 view(s)

31st December 2020, 11:22 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

It wouldn’t with your current setup but certainly in my case the motivation was to replace a thermostatic mixing valve/blender with an actuator...

63 replies | 6508 view(s)

31st December 2020, 10:33 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

I’m assuming that’s a flow connection at the bottom, return at the right of the thermostatic valve and supply at the top. So you would junk your...

63 replies | 6508 view(s)

31st December 2020, 09:58 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

If you replaced your 3-way with a 2-way rotary valve your pump could dead head when the room is close to set point with the valve restricting boiler...

63 replies | 6508 view(s)

31st December 2020, 06:12 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

I think that would only make sense if you could find a compatible 2-way rotary valve that the actuator could adjust to alter the flow temperature. ...

63 replies | 6508 view(s)

31st December 2020, 04:40 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

Yes, when the rotary valve is closed all flow is diverted to return. I used a gate valve to restrict boiler flow to the UFH circuit. With a...

63 replies | 6508 view(s)

31st December 2020, 01:40 AM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

This is documented in the Evohome installation guide: The HM80 by default is used in district heating where a boiler demand is not required. ...

63 replies | 6508 view(s)

31st December 2020, 12:06 AM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

See attached. You don’t need an HM80 to see these, just add a mixer valve zone, quit binding and view the unbound zone parameters.

63 replies | 6508 view(s)

30th December 2020, 10:11 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

You’ll find the parameters can be set from Evotouch with the zone set to Mixing Valve type. But when you change the zone type to Zone Valve for...

63 replies | 6508 view(s)

30th December 2020, 08:59 PM

kevinsmart replied to a thread UFH - EvoHome and reluctant plumber in Heating Control

Hi Bruce, Please see the attached images, before and after HM80 installation. You will need to replace your manual TRV/blending valve with a...

63 replies | 6508 view(s)

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